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#!/usr/bin/env python
"""
Run scons -h to display the associated help, or look below ..
"""
BOLD ="\033[1m"
RED ="\033[91m"
GREEN ="\033[92m"
YELLOW ="\033[1m" #"\033[93m" # unreadable on white backgrounds
CYAN ="\033[96m"
NORMAL ="\033[0m"
def exists(env):
return true
def printColorCoded(msg):
msg = msg.replace(']', NORMAL)
msg = msg.replace('b[', BOLD)
msg = msg.replace('g[', GREEN)
msg = msg.replace('r[', RED)
msg = msg.replace('c[', CYAN)
msg = msg.replace('y[', YELLOW)
print msg
def generate(env):
import SCons.Util, os
env.addHelpText("""b[hi]
b[*** abakus options ***
----------------------]
b[* bison=(no|yes): Enable parser support. Only needed for developers.
b[* flex=(no|yes): Enable lexer support. Only needed for developers.
b[* mpfr=(no|yes|check): Enable the MPFR library, which is faster and more
precise than abakus's high-precision code.
ie: b[scons configure]
""")
if env['HELP']:
# Don't even bother.
return env
from SCons.Options import Options, PackageOption, EnumOption
import os
def CheckFlags(context):
context.Message('Checking if ld supports --as-needed... ')
lastLINKFLAGS = context.env['LINKFLAGS']
context.env.Append(LINKFLAGS = '-Wl,--as-needed')
ret = context.TryLink("""
#include <iostream>
using namespace std;
int main()
{
cout << "Test" << endl;
}
""", ".cpp")
if not ret:
context.env.Replace(LINKFLAGS = lastLINKFLAGS)
context.Result(ret)
return ret
def CheckPath(context, prog, versionFlag = ''):
if context.env[prog] == 'yes':
context.env[prog] = prog
context.Message('Checking for %s... ' % prog)
ret = True
# If absolute path, just try this one.
if prog[0] == '/':
ret = context.TryAction('%s %s' % (context.env[prog], versionFlag))[0]
if ret:
context.Result(ret)
return True
path = context.env.WhereIs(prog)
if ret and path != None:
context.env[prog] = path
context.Result(1)
else:
context.env[prog] = False
context.Result(0)
print """
The $foo program was not found! You asked to use it so we will stop here. It
is not required, you may use $foo=no on the command line to go without it.""".replace('$foo', prog)
Exit(1)
return False
context.Result(1)
return True
cachefile = env['CACHEDIR'] + '/abakus.cache.py'
fixup = lambda x: "%s installed here (yes = search)" % x
opts = None
if env.doConfigure():
opts = Options(None, env['ARGS'])
else:
opts = Options(cachefile, env['ARGS'])
opts.AddOptions(
PackageOption('bison', fixup('use the Bison parser generator'), 'yes'),
PackageOption('flex', fixup('use the Flex scanner generator'), 'yes'),
EnumOption ('mpfr', 'use the MPFR high-precision library', 'check',
allowed_values=('yes', 'no', 'check'), map={}, ignorecase=1),
('ABAKUS_CONFIGURED', '', 0),
('HAVE_ASNEEDED', '', 0)
)
# We must manually pass the ARGS in.
opts.Update(env, env['ARGS'])
if env.doConfigure() or not env['ABAKUS_CONFIGURED']:
# Configure stuff
conf = env.Configure(custom_tests = {'CheckPath': CheckPath, 'CheckFlags' : CheckFlags})
if env['bison'] and env['bison'] != 'no':
conf.CheckPath('bison', '-V')
if env['flex'] and env['flex'] != 'no':
conf.CheckPath('flex', '-V')
if env['mpfr'] != 'no':
oldLibs = conf.env.get('LIBS', '')
conf.env.AppendUnique(LIBS = 'gmp')
if conf.CheckLibWithHeader('mpfr', 'mpfr.h', 'c++', '''
mpfr_t a;
mpfr_ptr ptr;
__mpfr_struct debug;
mpfr_init(a);
''', autoadd = True):
env['mpfr'] = 'yes'
else:
conf.env.Replace(LIBS = oldLibs)
if env['mpfr'] == 'yes':
print "Unable to find requested library mpfr!"
env.Exit(1)
else:
env['mpfr'] = 'no'
env['HAVE_ASNEEDED'] = 0
if conf.CheckFlags():
env['HAVE_ASNEEDED'] = 1
env['ABAKUS_CONFIGURED'] = 1
env = conf.Finish()
try:
f = open("config.h", "w+")
f.write("""/* config.h -- Automatically generated by abakus.py
* Any changes you make to this file will be overwritten!
*/
""")
f.write("/* HAVE_MPFR -- Defined if the MPFR library is being used. */\n")
if env['mpfr'] == 'yes':
f.write ("#define HAVE_MPFR 1\n")
else:
f.write ("/* #undef HAVE_MPFR */\n")
f.close()
except IOError:
print "Unable to write config.h!"
opts.Save(cachefile, env)
# vim: set et ts=8 sw=4:
|
