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Diffstat (limited to 'common/gcc_stack_protect.m4')
| -rw-r--r-- | common/gcc_stack_protect.m4 | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/common/gcc_stack_protect.m4 b/common/gcc_stack_protect.m4 deleted file mode 100644 index 2246849..0000000 --- a/common/gcc_stack_protect.m4 +++ /dev/null @@ -1,99 +0,0 @@ -dnl -dnl Useful macros for autoconf to check for ssp-patched gcc -dnl 1.0 - September 2003 - Tiago Sousa <mirage@kaotik.org> -dnl 1.1 - August 2006 - Ted Percival <ted@midg3t.net> -dnl * Stricter language checking (C or C++) -dnl * Adds GCC_STACK_PROTECT_LIB to add -lssp to LDFLAGS as necessary -dnl * Caches all results -dnl * Uses macros to ensure correct ouput in quiet/silent mode -dnl 1.2 - April 2007 - Ted Percival <ted@midg3t.net> -dnl * Added GCC_STACK_PROTECTOR macro for simpler (one-line) invocation -dnl * GCC_STACK_PROTECT_LIB now adds -lssp to LIBS rather than LDFLAGS -dnl -dnl About ssp: -dnl GCC extension for protecting applications from stack-smashing attacks -dnl http://www.research.ibm.com/trl/projects/security/ssp/ -dnl -dnl Usage: -dnl Most people will simply call GCC_STACK_PROTECTOR. -dnl If you only use one of C or C++, you can save time by only calling the -dnl macro appropriate for that language. In that case you should also call -dnl GCC_STACK_PROTECT_LIB first. -dnl -dnl GCC_STACK_PROTECTOR -dnl Tries to turn on stack protection for C and C++ by calling the following -dnl three macros with the right languages. -dnl -dnl GCC_STACK_PROTECT_CC -dnl checks -fstack-protector with the C compiler, if it exists then updates -dnl CFLAGS and defines ENABLE_SSP_CC -dnl -dnl GCC_STACK_PROTECT_CXX -dnl checks -fstack-protector with the C++ compiler, if it exists then updates -dnl CXXFLAGS and defines ENABLE_SSP_CXX -dnl -dnl GCC_STACK_PROTECT_LIB -dnl adds -lssp to LIBS if it is available -dnl ssp is usually provided as part of libc, but was previously a separate lib -dnl It does not hurt to add -lssp even if libc provides SSP - in that case -dnl libssp will simply be ignored. -dnl - -AC_DEFUN([GCC_STACK_PROTECT_LIB],[ - AC_CACHE_CHECK([whether libssp exists], ssp_cv_lib, - [ssp_old_libs="$LIBS" - LIBS="$LIBS -lssp" - AC_TRY_LINK(,, ssp_cv_lib=yes, ssp_cv_lib=no) - LIBS="$ssp_old_libs" - ]) - if test $ssp_cv_lib = yes; then - LIBS="$LIBS -lssp" - fi -]) - -AC_DEFUN([GCC_STACK_PROTECT_CC],[ - AC_LANG_ASSERT(C) - if test "X$CC" != "X"; then - AC_CACHE_CHECK([whether ${CC} accepts -fstack-protector], - ssp_cv_cc, - [ssp_old_cflags="$CFLAGS" - CFLAGS="$CFLAGS -fstack-protector -Werror" - AC_TRY_COMPILE(,, ssp_cv_cc=yes, ssp_cv_cc=no) - CFLAGS="$ssp_old_cflags" - ]) - if test $ssp_cv_cc = yes; then - CFLAGS="$CFLAGS -fstack-protector" - AC_DEFINE([ENABLE_SSP_CC], 1, [Define if SSP C support is enabled.]) - fi - fi -]) - -AC_DEFUN([GCC_STACK_PROTECT_CXX],[ - AC_LANG_ASSERT(C++) - if test "X$CXX" != "X"; then - AC_CACHE_CHECK([whether ${CXX} accepts -fstack-protector], - ssp_cv_cxx, - [ssp_old_cxxflags="$CXXFLAGS" - CXXFLAGS="$CXXFLAGS -fstack-protector -Werror" - AC_TRY_COMPILE(,, ssp_cv_cxx=yes, ssp_cv_cxx=no) - CXXFLAGS="$ssp_old_cxxflags" - ]) - if test $ssp_cv_cxx = yes; then - CXXFLAGS="$CXXFLAGS -fstack-protector" - AC_DEFINE([ENABLE_SSP_CXX], 1, [Define if SSP C++ support is enabled.]) - fi - fi -]) - -AC_DEFUN([GCC_STACK_PROTECTOR],[ - GCC_STACK_PROTECT_LIB - - AC_LANG_PUSH([C]) - GCC_STACK_PROTECT_CC - AC_LANG_POP([C]) - - AC_LANG_PUSH([C++]) - GCC_STACK_PROTECT_CXX - AC_LANG_POP([C++]) -]) - |