Replaced _BSD_SOURCE, _SVID_SOURCE with _DEFAULT_SOURCE. Removed AC_CHECK_GNU_EXTENSIONS.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

78 files changed, 198 insertions, 2186 deletions

diff --git a/tde-i18n-af/acinclude.m4 b/tde-i18n-af/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-af/acinclude.m4
+++ b/tde-i18n-af/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-ar/acinclude.m4 b/tde-i18n-ar/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ar/acinclude.m4
+++ b/tde-i18n-ar/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-az/acinclude.m4 b/tde-i18n-az/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-az/acinclude.m4
+++ b/tde-i18n-az/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-be/acinclude.m4 b/tde-i18n-be/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-be/acinclude.m4
+++ b/tde-i18n-be/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-bg/acinclude.m4 b/tde-i18n-bg/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-bg/acinclude.m4
+++ b/tde-i18n-bg/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-bn/acinclude.m4 b/tde-i18n-bn/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-bn/acinclude.m4
+++ b/tde-i18n-bn/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-br/acinclude.m4 b/tde-i18n-br/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-br/acinclude.m4
+++ b/tde-i18n-br/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-bs/acinclude.m4 b/tde-i18n-bs/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-bs/acinclude.m4
+++ b/tde-i18n-bs/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-ca/acinclude.m4 b/tde-i18n-ca/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ca/acinclude.m4
+++ b/tde-i18n-ca/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-cs/acinclude.m4 b/tde-i18n-cs/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-cs/acinclude.m4
+++ b/tde-i18n-cs/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-csb/acinclude.m4 b/tde-i18n-csb/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-csb/acinclude.m4
+++ b/tde-i18n-csb/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-cy/acinclude.m4 b/tde-i18n-cy/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-cy/acinclude.m4
+++ b/tde-i18n-cy/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-da/acinclude.m4 b/tde-i18n-da/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-da/acinclude.m4
+++ b/tde-i18n-da/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-da/docs/tdevelop/kde_app_devel/index.docbook b/tde-i18n-da/docs/tdevelop/kde_app_devel/index.docbook
index 2f75bfac302..05abb50cc00 100644
--- a/tde-i18n-da/docs/tdevelop/kde_app_devel/index.docbook
+++ b/tde-i18n-da/docs/tdevelop/kde_app_devel/index.docbook
@@ -394,7 +394,7 @@ return a.exec();
 24 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o main.o `test -f 'main.cpp' || echo '/home/caleb/kscribble/src/'`main.cpp
 25 /usr/lib/qt/bin/moc /home/caleb/kscribble/src/kscribble.h -o kscribble.moc
 26 source='kscribble.cpp' object='kscribble.o' libtool=no \
@@ -403,7 +403,7 @@ return a.exec();
 29 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble.o `test -f 'kscribble.cpp' || echo '/home/caleb/kscribble/src/'`kscribble.cpp
 30 kscribble.cpp: In member function `void KScribble::setupActions()'
 31 kscribble.cpp:107: warning: unused variable `TDEAction*custom'
@@ -414,7 +414,7 @@ return a.exec();
 36 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi 
-   -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
+   -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
    -o kscribbleview.o `test -f 'kscribbleview.cpp' || echo '/home/caleb/kscribble/src/'`kscribbleview.cpp
 37 kscribbleview.cpp: In member function `void KScribbleView::print(QPainter*,
 38  int, int)':
@@ -428,7 +428,7 @@ return a.exec();
 46 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o pref.o `test -f 'pref.cpp' || echo '/home/caleb/kscribble/src/'`pref.cpp
 47 /usr/local/kde3/bin/dcopidl /home/caleb/kscribble/src/kscribbleiface.h > kscribbleiface.kidl || 
    ( rm -f kscribbleiface.kidl ; /bin/false )
@@ -439,12 +439,12 @@ return a.exec();
 52 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribbleiface_skel.o `test -f 'kscribbleiface_skel.cpp' || 
    echo '/home/caleb/kscribble/src/'`kscribbleiface_skel.cpp
 53 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall 
    -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib main.o kscribble.o kscribbleview.o pref.o kscribbleiface_skel.o -ltdeio 
 54 source='kscribble_client.cpp' object='kscribble_client.o' libtool=no \
@@ -453,12 +453,12 @@ return a.exec();
 57 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble_client.o `test -f 'kscribble_client.cpp' || echo 
    '/home/caleb/kscribble/src/'`kscribble_client.cpp
 58 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef 
    -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib kscribble_client.o -ltdecore 
 59 gmake[2]: Leaving directory `/home/caleb/kscribble/src'
diff --git a/tde-i18n-de/acinclude.m4 b/tde-i18n-de/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-de/acinclude.m4
+++ b/tde-i18n-de/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-el/acinclude.m4 b/tde-i18n-el/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-el/acinclude.m4
+++ b/tde-i18n-el/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-en_GB/acinclude.m4 b/tde-i18n-en_GB/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-en_GB/acinclude.m4
+++ b/tde-i18n-en_GB/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-eo/acinclude.m4 b/tde-i18n-eo/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-eo/acinclude.m4
+++ b/tde-i18n-eo/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-es/acinclude.m4 b/tde-i18n-es/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-es/acinclude.m4
+++ b/tde-i18n-es/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-es/docs/tdevelop/kde_app_devel/index.docbook b/tde-i18n-es/docs/tdevelop/kde_app_devel/index.docbook
index c0fe3d59280..124afaa8a5c 100644
--- a/tde-i18n-es/docs/tdevelop/kde_app_devel/index.docbook
+++ b/tde-i18n-es/docs/tdevelop/kde_app_devel/index.docbook
@@ -394,7 +394,7 @@ return a.exec();
 24 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o main.o `test -f 'main.cpp' || echo '/home/caleb/kscribble/src/'`main.cpp
 25 /usr/lib/qt/bin/moc /home/caleb/kscribble/src/kscribble.h -o kscribble.moc
 26 source='kscribble.cpp' object='kscribble.o' libtool=no \
@@ -403,7 +403,7 @@ return a.exec();
 29 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble.o `test -f 'kscribble.cpp' || echo '/home/caleb/kscribble/src/'`kscribble.cpp
 30 kscribble.cpp: In member function `void KScribble::setupActions()'
 31 kscribble.cpp:107: warning: unused variable `TDEAction*custom'
@@ -414,7 +414,7 @@ return a.exec();
 36 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi 
-   -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
+   -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
    -o kscribbleview.o `test -f 'kscribbleview.cpp' || echo '/home/caleb/kscribble/src/'`kscribbleview.cpp
 37 kscribbleview.cpp: In member function `void KScribbleView::print(QPainter*,
 38  int, int)':
@@ -428,7 +428,7 @@ return a.exec();
 46 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o pref.o `test -f 'pref.cpp' || echo '/home/caleb/kscribble/src/'`pref.cpp
 47 /usr/local/kde3/bin/dcopidl /home/caleb/kscribble/src/kscribbleiface.h > kscribbleiface.kidl || 
    ( rm -f kscribbleiface.kidl ; /bin/false )
@@ -439,12 +439,12 @@ return a.exec();
 52 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribbleiface_skel.o `test -f 'kscribbleiface_skel.cpp' || 
    echo '/home/caleb/kscribble/src/'`kscribbleiface_skel.cpp
 53 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall 
    -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib main.o kscribble.o kscribbleview.o pref.o kscribbleiface_skel.o -ltdeio 
 54 source='kscribble_client.cpp' object='kscribble_client.o' libtool=no \
@@ -453,12 +453,12 @@ return a.exec();
 57 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble_client.o `test -f 'kscribble_client.cpp' || echo 
    '/home/caleb/kscribble/src/'`kscribble_client.cpp
 58 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef 
    -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib kscribble_client.o -ltdecore 
 59 gmake[2]: Leaving directory `/home/caleb/kscribble/src'
diff --git a/tde-i18n-et/acinclude.m4 b/tde-i18n-et/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-et/acinclude.m4
+++ b/tde-i18n-et/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-et/docs/tdevelop/kde_app_devel/index.docbook b/tde-i18n-et/docs/tdevelop/kde_app_devel/index.docbook
index 4ce2df5b0c3..7c060c73b2d 100644
--- a/tde-i18n-et/docs/tdevelop/kde_app_devel/index.docbook
+++ b/tde-i18n-et/docs/tdevelop/kde_app_devel/index.docbook
@@ -394,7 +394,7 @@ return a.exec();
 24 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o main.o `test -f 'main.cpp' || echo '/home/caleb/kscribble/src/'`main.cpp
 25 /usr/lib/qt/bin/moc /home/caleb/kscribble/src/kscribble.h -o kscribble.moc
 26 source='kscribble.cpp' object='kscribble.o' libtool=no \
@@ -403,7 +403,7 @@ return a.exec();
 29 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble.o `test -f 'kscribble.cpp' || echo '/home/caleb/kscribble/src/'`kscribble.cpp
 30 kscribble.cpp: In member function `void KScribble::setupActions()'
 31 kscribble.cpp:107: warning: unused variable `TDEAction*custom'
@@ -414,7 +414,7 @@ return a.exec();
 36 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi 
-   -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
+   -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
    -o kscribbleview.o `test -f 'kscribbleview.cpp' || echo '/home/caleb/kscribble/src/'`kscribbleview.cpp
 37 kscribbleview.cpp: In member function `void KScribbleView::print(QPainter*,
 38  int, int)':
@@ -428,7 +428,7 @@ return a.exec();
 46 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o pref.o `test -f 'pref.cpp' || echo '/home/caleb/kscribble/src/'`pref.cpp
 47 /usr/local/kde3/bin/dcopidl /home/caleb/kscribble/src/kscribbleiface.h > kscribbleiface.kidl || 
    ( rm -f kscribbleiface.kidl ; /bin/false )
@@ -439,12 +439,12 @@ return a.exec();
 52 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribbleiface_skel.o `test -f 'kscribbleiface_skel.cpp' || 
    echo '/home/caleb/kscribble/src/'`kscribbleiface_skel.cpp
 53 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall 
    -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib main.o kscribble.o kscribbleview.o pref.o kscribbleiface_skel.o -ltdeio 
 54 source='kscribble_client.cpp' object='kscribble_client.o' libtool=no \
@@ -453,12 +453,12 @@ return a.exec();
 57 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble_client.o `test -f 'kscribble_client.cpp' || echo 
    '/home/caleb/kscribble/src/'`kscribble_client.cpp
 58 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef 
    -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib kscribble_client.o -ltdecore 
 59 gmake[2]: Leaving directory `/home/caleb/kscribble/src'
diff --git a/tde-i18n-eu/acinclude.m4 b/tde-i18n-eu/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-eu/acinclude.m4
+++ b/tde-i18n-eu/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-fa/acinclude.m4 b/tde-i18n-fa/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-fa/acinclude.m4
+++ b/tde-i18n-fa/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-fi/acinclude.m4 b/tde-i18n-fi/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-fi/acinclude.m4
+++ b/tde-i18n-fi/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-fr/acinclude.m4 b/tde-i18n-fr/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-fr/acinclude.m4
+++ b/tde-i18n-fr/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-fy/acinclude.m4 b/tde-i18n-fy/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-fy/acinclude.m4
+++ b/tde-i18n-fy/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-ga/acinclude.m4 b/tde-i18n-ga/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ga/acinclude.m4
+++ b/tde-i18n-ga/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-gl/acinclude.m4 b/tde-i18n-gl/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-gl/acinclude.m4
+++ b/tde-i18n-gl/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-he/acinclude.m4 b/tde-i18n-he/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-he/acinclude.m4
+++ b/tde-i18n-he/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-hi/acinclude.m4 b/tde-i18n-hi/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-hi/acinclude.m4
+++ b/tde-i18n-hi/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-hr/acinclude.m4 b/tde-i18n-hr/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-hr/acinclude.m4
+++ b/tde-i18n-hr/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-hu/acinclude.m4 b/tde-i18n-hu/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-hu/acinclude.m4
+++ b/tde-i18n-hu/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-is/acinclude.m4 b/tde-i18n-is/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-is/acinclude.m4
+++ b/tde-i18n-is/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-it/acinclude.m4 b/tde-i18n-it/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-it/acinclude.m4
+++ b/tde-i18n-it/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-it/docs/tdevelop/kde_app_devel/index.docbook b/tde-i18n-it/docs/tdevelop/kde_app_devel/index.docbook
index 02716513c9d..d77bf6ead06 100644
--- a/tde-i18n-it/docs/tdevelop/kde_app_devel/index.docbook
+++ b/tde-i18n-it/docs/tdevelop/kde_app_devel/index.docbook
@@ -394,7 +394,7 @@ return a.exec();
 24 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o main.o `test -f 'main.cpp' || echo '/home/caleb/kscribble/src/'`main.cpp
 25 /usr/lib/qt/bin/moc /home/caleb/kscribble/src/kscribble.h -o kscribble.moc
 26 source='kscribble.cpp' object='kscribble.o' libtool=no \
@@ -403,7 +403,7 @@ return a.exec();
 29 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble.o `test -f 'kscribble.cpp' || echo '/home/caleb/kscribble/src/'`kscribble.cpp
 30 kscribble.cpp: In member function `void KScribble::setupActions()'
 31 kscribble.cpp:107: warning: unused variable `TDEAction*custom'
@@ -414,7 +414,7 @@ return a.exec();
 36 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi 
-   -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
+   -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
    -o kscribbleview.o `test -f 'kscribbleview.cpp' || echo '/home/caleb/kscribble/src/'`kscribbleview.cpp
 37 kscribbleview.cpp: In member function `void KScribbleView::print(QPainter*,
 38  int, int)':
@@ -428,7 +428,7 @@ return a.exec();
 46 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o pref.o `test -f 'pref.cpp' || echo '/home/caleb/kscribble/src/'`pref.cpp
 47 /usr/local/kde3/bin/dcopidl /home/caleb/kscribble/src/kscribbleiface.h > kscribbleiface.kidl || 
    ( rm -f kscribbleiface.kidl ; /bin/false )
@@ -439,12 +439,12 @@ return a.exec();
 52 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribbleiface_skel.o `test -f 'kscribbleiface_skel.cpp' || 
    echo '/home/caleb/kscribble/src/'`kscribbleiface_skel.cpp
 53 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall 
    -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib main.o kscribble.o kscribbleview.o pref.o kscribbleiface_skel.o -ltdeio 
 54 source='kscribble_client.cpp' object='kscribble_client.o' libtool=no \
@@ -453,12 +453,12 @@ return a.exec();
 57 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble_client.o `test -f 'kscribble_client.cpp' || echo 
    '/home/caleb/kscribble/src/'`kscribble_client.cpp
 58 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef 
    -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib kscribble_client.o -ltdecore 
 59 gmake[2]: Leaving directory `/home/caleb/kscribble/src'
diff --git a/tde-i18n-ja/acinclude.m4 b/tde-i18n-ja/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ja/acinclude.m4
+++ b/tde-i18n-ja/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-kk/acinclude.m4 b/tde-i18n-kk/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-kk/acinclude.m4
+++ b/tde-i18n-kk/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-km/acinclude.m4 b/tde-i18n-km/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-km/acinclude.m4
+++ b/tde-i18n-km/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-ko/acinclude.m4 b/tde-i18n-ko/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ko/acinclude.m4
+++ b/tde-i18n-ko/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-lt/acinclude.m4 b/tde-i18n-lt/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-lt/acinclude.m4
+++ b/tde-i18n-lt/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-lv/acinclude.m4 b/tde-i18n-lv/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-lv/acinclude.m4
+++ b/tde-i18n-lv/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-mk/acinclude.m4 b/tde-i18n-mk/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-mk/acinclude.m4
+++ b/tde-i18n-mk/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-mn/acinclude.m4 b/tde-i18n-mn/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-mn/acinclude.m4
+++ b/tde-i18n-mn/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-ms/acinclude.m4 b/tde-i18n-ms/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ms/acinclude.m4
+++ b/tde-i18n-ms/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-nb/acinclude.m4 b/tde-i18n-nb/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-nb/acinclude.m4
+++ b/tde-i18n-nb/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-nds/acinclude.m4 b/tde-i18n-nds/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-nds/acinclude.m4
+++ b/tde-i18n-nds/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-nl/acinclude.m4 b/tde-i18n-nl/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-nl/acinclude.m4
+++ b/tde-i18n-nl/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-nn/acinclude.m4 b/tde-i18n-nn/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-nn/acinclude.m4
+++ b/tde-i18n-nn/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-pa/acinclude.m4 b/tde-i18n-pa/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-pa/acinclude.m4
+++ b/tde-i18n-pa/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-pl/acinclude.m4 b/tde-i18n-pl/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-pl/acinclude.m4
+++ b/tde-i18n-pl/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-pt/acinclude.m4 b/tde-i18n-pt/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-pt/acinclude.m4
+++ b/tde-i18n-pt/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-pt/docs/tdevelop/kde_app_devel/index.docbook b/tde-i18n-pt/docs/tdevelop/kde_app_devel/index.docbook
index 5f9cf225875..31cd7442d1c 100644
--- a/tde-i18n-pt/docs/tdevelop/kde_app_devel/index.docbook
+++ b/tde-i18n-pt/docs/tdevelop/kde_app_devel/index.docbook
@@ -394,7 +394,7 @@ return a.exec();
 24 g++ -DHAVE_CONFIG_H -I. -I/home/ze/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o main.o `test -f 'main.cpp' || echo '/home/ze/kscribble/src/'`main.cpp
 25 /usr/lib/qt/bin/moc /home/ze/kscribble/src/kscribble.h -o kscribble.moc
 26 source='kscribble.cpp' object='kscribble.o' libtool=no \
@@ -403,7 +403,7 @@ return a.exec();
 29 g++ -DHAVE_CONFIG_H -I. -I/home/ze/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble.o `test -f 'kscribble.cpp' || echo '/home/ze/kscribble/src/'`kscribble.cpp
 30 kscribble.cpp: In member function `void KScribble::setupActions()'
 31 kscribble.cpp:107: warning: unused variable `TDEAction*custom'
@@ -414,7 +414,7 @@ return a.exec();
 36 g++ -DHAVE_CONFIG_H -I. -I/home/ze/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi 
-   -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
+   -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
    -o kscribbleview.o `test -f 'kscribbleview.cpp' || echo '/home/ze/kscribble/src/'`kscribbleview.cpp
 37 kscribbleview.cpp: In member function `void KScribbleView::print(QPainter*,
 38  int, int)':
@@ -428,7 +428,7 @@ return a.exec();
 46 g++ -DHAVE_CONFIG_H -I. -I/home/ze/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o pref.o `test -f 'pref.cpp' || echo '/home/ze/kscribble/src/'`pref.cpp
 47 /usr/local/kde3/bin/dcopidl /home/ze/kscribble/src/kscribbleiface.h > kscribbleiface.kidl || 
    ( rm -f kscribbleiface.kidl ; /bin/false )
@@ -439,12 +439,12 @@ return a.exec();
 52 g++ -DHAVE_CONFIG_H -I. -I/home/ze/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribbleiface_skel.o `test -f 'kscribbleiface_skel.cpp' || 
    echo '/home/ze/kscribble/src/'`kscribbleiface_skel.cpp
 53 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall 
    -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib main.o kscribble.o kscribbleview.o pref.o kscribbleiface_skel.o -ltdeio 
 54 source='kscribble_client.cpp' object='kscribble_client.o' libtool=no \
@@ -453,12 +453,12 @@ return a.exec();
 57 g++ -DHAVE_CONFIG_H -I. -I/home/ze/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble_client.o `test -f 'kscribble_client.cpp' || echo 
    '/home/ze/kscribble/src/'`kscribble_client.cpp
 58 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef 
    -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib kscribble_client.o -ltdecore 
 59 gmake[2]: Leaving directory `/home/ze/kscribble/src'
diff --git a/tde-i18n-pt_BR/acinclude.m4 b/tde-i18n-pt_BR/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-pt_BR/acinclude.m4
+++ b/tde-i18n-pt_BR/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-ro/acinclude.m4 b/tde-i18n-ro/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ro/acinclude.m4
+++ b/tde-i18n-ro/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-ru/acinclude.m4 b/tde-i18n-ru/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ru/acinclude.m4
+++ b/tde-i18n-ru/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-ru/docs/tdevelop/kde_app_devel/index.docbook b/tde-i18n-ru/docs/tdevelop/kde_app_devel/index.docbook
index fe80bd1e1f6..70e32db4856 100644
--- a/tde-i18n-ru/docs/tdevelop/kde_app_devel/index.docbook
+++ b/tde-i18n-ru/docs/tdevelop/kde_app_devel/index.docbook
@@ -394,7 +394,7 @@ return a.exec();
 24 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o main.o `test -f 'main.cpp' || echo '/home/caleb/kscribble/src/'`main.cpp
 25 /usr/lib/qt/bin/moc /home/caleb/kscribble/src/kscribble.h -o kscribble.moc
 26 source='kscribble.cpp' object='kscribble.o' libtool=no \
@@ -403,7 +403,7 @@ return a.exec();
 29 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble.o `test -f 'kscribble.cpp' || echo '/home/caleb/kscribble/src/'`kscribble.cpp
 30 kscribble.cpp: In member function `void KScribble::setupActions()'
 31 kscribble.cpp:107: warning: unused variable `TDEAction*custom'
@@ -414,7 +414,7 @@ return a.exec();
 36 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi 
-   -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
+   -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
    -o kscribbleview.o `test -f 'kscribbleview.cpp' || echo '/home/caleb/kscribble/src/'`kscribbleview.cpp
 37 kscribbleview.cpp: In member function `void KScribbleView::print(QPainter*,
 38  int, int)':
@@ -428,7 +428,7 @@ return a.exec();
 46 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o pref.o `test -f 'pref.cpp' || echo '/home/caleb/kscribble/src/'`pref.cpp
 47 /usr/local/kde3/bin/dcopidl /home/caleb/kscribble/src/kscribbleiface.h > kscribbleiface.kidl || 
    ( rm -f kscribbleiface.kidl ; /bin/false )
@@ -439,12 +439,12 @@ return a.exec();
 52 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribbleiface_skel.o `test -f 'kscribbleiface_skel.cpp' || 
    echo '/home/caleb/kscribble/src/'`kscribbleiface_skel.cpp
 53 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall 
    -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib main.o kscribble.o kscribbleview.o pref.o kscribbleiface_skel.o -ltdeio 
 54 source='kscribble_client.cpp' object='kscribble_client.o' libtool=no \
@@ -453,12 +453,12 @@ return a.exec();
 57 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble_client.o `test -f 'kscribble_client.cpp' || echo 
    '/home/caleb/kscribble/src/'`kscribble_client.cpp
 58 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef 
    -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib kscribble_client.o -ltdecore 
 59 gmake[2]: Leaving directory `/home/caleb/kscribble/src'
diff --git a/tde-i18n-rw/acinclude.m4 b/tde-i18n-rw/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-rw/acinclude.m4
+++ b/tde-i18n-rw/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-se/acinclude.m4 b/tde-i18n-se/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-se/acinclude.m4
+++ b/tde-i18n-se/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-sk/acinclude.m4 b/tde-i18n-sk/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-sk/acinclude.m4
+++ b/tde-i18n-sk/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-sl/acinclude.m4 b/tde-i18n-sl/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-sl/acinclude.m4
+++ b/tde-i18n-sl/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-sr/acinclude.m4 b/tde-i18n-sr/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-sr/acinclude.m4
+++ b/tde-i18n-sr/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-sr@Latn/acinclude.m4 b/tde-i18n-sr@Latn/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-sr@Latn/acinclude.m4
+++ b/tde-i18n-sr@Latn/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-ss/acinclude.m4 b/tde-i18n-ss/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ss/acinclude.m4
+++ b/tde-i18n-ss/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-sv/acinclude.m4 b/tde-i18n-sv/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-sv/acinclude.m4
+++ b/tde-i18n-sv/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-sv/docs/tdevelop/kde_app_devel/index.docbook b/tde-i18n-sv/docs/tdevelop/kde_app_devel/index.docbook
index fe52737ea09..1199f3dd570 100644
--- a/tde-i18n-sv/docs/tdevelop/kde_app_devel/index.docbook
+++ b/tde-i18n-sv/docs/tdevelop/kde_app_devel/index.docbook
@@ -394,7 +394,7 @@ return a.exec();
 24 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o main.o `test -f 'main.cpp' || echo '/home/caleb/kscribble/src/'`main.cpp
 25 /usr/lib/qt/bin/moc /home/caleb/kscribble/src/kscribble.h -o kscribble.moc
 26 source='kscribble.cpp' object='kscribble.o' libtool=no \
@@ -403,7 +403,7 @@ return a.exec();
 29 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble.o `test -f 'kscribble.cpp' || echo '/home/caleb/kscribble/src/'`kscribble.cpp
 30 kscribble.cpp: In member function `void KScribble::setupActions()'
 31 kscribble.cpp:107: warning: unused variable `TDEAction*custom'
@@ -414,7 +414,7 @@ return a.exec();
 36 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi 
-   -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
+   -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -c 
    -o kscribbleview.o `test -f 'kscribbleview.cpp' || echo '/home/caleb/kscribble/src/'`kscribbleview.cpp
 37 kscribbleview.cpp: In member function `void KScribbleView::print(QPainter*,
 38  int, int)':
@@ -428,7 +428,7 @@ return a.exec();
 46 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o pref.o `test -f 'pref.cpp' || echo '/home/caleb/kscribble/src/'`pref.cpp
 47 /usr/local/kde3/bin/dcopidl /home/caleb/kscribble/src/kscribbleiface.h > kscribbleiface.kidl || 
    ( rm -f kscribbleiface.kidl ; /bin/false )
@@ -439,12 +439,12 @@ return a.exec();
 52 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribbleiface_skel.o `test -f 'kscribbleiface_skel.cpp' || 
    echo '/home/caleb/kscribble/src/'`kscribbleiface_skel.cpp
 53 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall 
    -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib main.o kscribble.o kscribbleview.o pref.o kscribbleiface_skel.o -ltdeio 
 54 source='kscribble_client.cpp' object='kscribble_client.o' libtool=no \
@@ -453,12 +453,12 @@ return a.exec();
 57 g++ -DHAVE_CONFIG_H -I. -I/home/caleb/kscribble/src -I.. -I/usr/local/kde3/include 
    -I/usr/lib/qt/include -I/usr/X11R6/include -DTQT_THREAD_SUPPORT -D_REENTRANT -Wnon-virtual-dtor 
    -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings 
-   -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
+   -ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new 
    -c -o kscribble_client.o `test -f 'kscribble_client.cpp' || echo 
    '/home/caleb/kscribble/src/'`kscribble_client.cpp
 58 /bin/sh ../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef 
    -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 
-   -D_BSD_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
+   -D_DEFAULT_SOURCE -Wcast-align -Wconversion -O2 -fno-exceptions -fno-check-new -o kscribble_client -R 
    /usr/local/kde3/lib -R /usr/lib/qt/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/lib/qt/lib 
    -L/usr/local/kde3/lib kscribble_client.o -ltdecore 
 59 gmake[2]: Leaving directory `/home/caleb/kscribble/src'
diff --git a/tde-i18n-ta/acinclude.m4 b/tde-i18n-ta/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-ta/acinclude.m4
+++ b/tde-i18n-ta/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-te/acinclude.m4 b/tde-i18n-te/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-te/acinclude.m4
+++ b/tde-i18n-te/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-tg/acinclude.m4 b/tde-i18n-tg/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-tg/acinclude.m4
+++ b/tde-i18n-tg/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-th/acinclude.m4 b/tde-i18n-th/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-th/acinclude.m4
+++ b/tde-i18n-th/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-tr/acinclude.m4 b/tde-i18n-tr/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-tr/acinclude.m4
+++ b/tde-i18n-tr/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-uk/acinclude.m4 b/tde-i18n-uk/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-uk/acinclude.m4
+++ b/tde-i18n-uk/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-uz/acinclude.m4 b/tde-i18n-uz/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-uz/acinclude.m4
+++ b/tde-i18n-uz/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-uz@cyrillic/acinclude.m4 b/tde-i18n-uz@cyrillic/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-uz@cyrillic/acinclude.m4
+++ b/tde-i18n-uz@cyrillic/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-vi/acinclude.m4 b/tde-i18n-vi/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-vi/acinclude.m4
+++ b/tde-i18n-vi/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-wa/acinclude.m4 b/tde-i18n-wa/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-wa/acinclude.m4
+++ b/tde-i18n-wa/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-zh_CN/acinclude.m4 b/tde-i18n-zh_CN/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-zh_CN/acinclude.m4
+++ b/tde-i18n-zh_CN/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;
diff --git a/tde-i18n-zh_TW/acinclude.m4 b/tde-i18n-zh_TW/acinclude.m4
index 293ec4dcbd6..ebe7978ffa0 100644
--- a/tde-i18n-zh_TW/acinclude.m4
+++ b/tde-i18n-zh_TW/acinclude.m4
@@ -2897,34 +2897,6 @@ AC_DEFUN([AC_CHECK_BOOL],
   AC_DEFINE_UNQUOTED(HAVE_BOOL, 1, [You _must_ have bool])
 ])
 
-AC_DEFUN([AC_CHECK_GNU_EXTENSIONS],
-[
-AC_MSG_CHECKING(if you need GNU extensions)
-AC_CACHE_VAL(ac_cv_gnu_extensions,
-[
-cat > conftest.c << EOF
-#include <features.h>
-
-#ifdef __GNU_LIBRARY__
-yes
-#endif
-EOF
-
-if (eval "$ac_cpp conftest.c") 2>&5 |
-  egrep "yes" >/dev/null 2>&1; then
-  rm -rf conftest*
-  ac_cv_gnu_extensions=yes
-else
-  ac_cv_gnu_extensions=no
-fi
-])
-
-AC_MSG_RESULT($ac_cv_gnu_extensions)
-if test "$ac_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE, 1, [Define if you need to use the GNU extensions])
-fi
-])
-
 AC_DEFUN([KDE_CHECK_COMPILER_FLAG],
 [
 AC_MSG_CHECKING([whether $CXX supports -$1])
@@ -3222,8 +3194,8 @@ AC_DEFUN([AC_CHECK_COMPILERS],
         CXXFLAGS="-Wall -W -Wpointer-arith $CXXFLAGS"
         case $host in
           *-*-linux-gnu)	
-            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE $CFLAGS"
-            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
+            CFLAGS="-std=iso9899:1990 -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE $CFLAGS"
+            CXXFLAGS="-ansi -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -Wcast-align -Wchar-subscripts $CXXFLAGS"
             KDE_CHECK_COMPILER_FLAG(Wmissing-format-attribute, [CXXFLAGS="$CXXFLAGS -Wformat-security -Wmissing-format-attribute"])
             KDE_CHECK_C_COMPILER_FLAG(Wmissing-format-attribute, [CFLAGS="$CFLAGS -Wformat-security -Wmissing-format-attribute"])
           ;;