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"""SCons.Tool.gcc
Tool-specific initialization for MinGW (http://www.mingw.org/)
There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.
See also http://www.scons.org/wiki/CrossCompilingMingw
"""
#
# Copyright (c) 2001, 2002, 2003, 2004 The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
import os
import os.path
import string
import SCons.Action
import SCons.Builder
import SCons.Tool
import SCons.Util
# This is what we search for to find mingw:
prefixes32 = SCons.Util.Split("""
mingw32-
mingw32msvc-
i386-mingw32-
i486-mingw32-
i586-mingw32-
i686-mingw32-
i386-mingw32msvc-
i486-mingw32msvc-
i586-mingw32msvc-
i686-mingw32msvc-
i686-pc-mingw32-
i686-w64-mingw32-
""")
prefixes64 = SCons.Util.Split("""
amd64-mingw32-
amd64-mingw32msvc-
amd64-pc-mingw32-
x86_64-w64-mingw32-
""")
def find(env):
if env['machine'] == 'x86_64':
prefixes = prefixes64
else:
prefixes = prefixes32
for prefix in prefixes:
# First search in the SCons path and then the OS path:
if env.WhereIs(prefix + 'gcc') or SCons.Util.WhereIs(prefix + 'gcc'):
return prefix
return ''
def shlib_generator(target, source, env, for_signature):
cmd = SCons.Util.CLVar(['$SHLINK', '$SHLINKFLAGS'])
dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
if dll: cmd.extend(['-o', dll])
cmd.extend(['$SOURCES', '$_LIBDIRFLAGS', '$_LIBFLAGS'])
implib = env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX')
if implib: cmd.append('-Wl,--out-implib,'+implib.get_string(for_signature))
def_target = env.FindIxes(target, 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX')
if def_target: cmd.append('-Wl,--output-def,'+def_target.get_string(for_signature))
return [cmd]
def shlib_emitter(target, source, env):
dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
no_import_lib = env.get('no_import_lib', 0)
if not dll:
raise SCons.Errors.UserError, "A shared library should have exactly one target with the suffix: %s" % env.subst("$SHLIBSUFFIX")
if not no_import_lib and \
not env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX'):
# Append an import library to the list of targets.
target.append(env.ReplaceIxes(dll,
'SHLIBPREFIX', 'SHLIBSUFFIX',
'LIBPREFIX', 'LIBSUFFIX'))
# Append a def file target if there isn't already a def file target
# or a def file source. There is no option to disable def file
# target emitting, because I can't figure out why someone would ever
# want to turn it off.
def_source = env.FindIxes(source, 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX')
def_target = env.FindIxes(target, 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX')
if not def_source and not def_target:
target.append(env.ReplaceIxes(dll,
'SHLIBPREFIX', 'SHLIBSUFFIX',
'WIN32DEFPREFIX', 'WIN32DEFSUFFIX'))
return (target, source)
shlib_action = SCons.Action.Action(shlib_generator, '$SHLINKCOMSTR', generator=1)
res_action = SCons.Action.Action('$RCCOM', '$RCCOMSTR')
res_builder = SCons.Builder.Builder(action=res_action, suffix='.o',
source_scanner=SCons.Tool.SourceFileScanner)
SCons.Tool.SourceFileScanner.add_scanner('.rc', SCons.Defaults.CScan)
def compile_without_gstabs(env, sources, c_file):
'''This is a hack used to compile some source files without the
-gstabs option.
It seems that some versions of mingw32's gcc (4.4.2 at least) die
when compiling large files with the -gstabs option. -gstabs is
related to debug symbols and can be omitted from the effected
files.
This function compiles the given c_file without -gstabs, removes
the c_file from the sources list, then appends the new .o file to
sources. Then return the new sources list.
'''
# Modify CCFLAGS to not have -gstabs option:
env2 = env.Clone()
flags = str(env2['CCFLAGS'])
flags = flags.replace("-gstabs", "")
env2['CCFLAGS'] = SCons.Util.CLVar(flags)
# Build the special-case files:
obj_file = env2.SharedObject(c_file)
# Replace ".cpp" or ".c" with ".o"
o_file = c_file.replace(".cpp", ".o")
o_file = o_file.replace(".c", ".o")
# Replace the .c files with the specially-compiled .o file
sources.remove(c_file)
sources.append(o_file)
return sources
def generate(env):
mingw_prefix = find(env)
if mingw_prefix:
dir = os.path.dirname(env.WhereIs(mingw_prefix + 'gcc') or SCons.Util.WhereIs(mingw_prefix + 'gcc'))
# The mingw bin directory must be added to the path:
path = env['ENV'].get('PATH', [])
if not path:
path = []
if SCons.Util.is_String(path):
path = string.split(path, os.pathsep)
env['ENV']['PATH'] = string.join([dir] + path, os.pathsep)
# Most of mingw is the same as gcc and friends...
gnu_tools = ['gcc', 'g++', 'gnulink', 'ar', 'gas']
for tool in gnu_tools:
SCons.Tool.Tool(tool)(env)
#... but a few things differ:
env['CC'] = mingw_prefix + 'gcc'
env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS')
env['CXX'] = mingw_prefix + 'g++'
env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS')
env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -shared')
env['SHLINKCOM'] = shlib_action
env.Append(SHLIBEMITTER = [shlib_emitter])
env['LINK'] = mingw_prefix + 'g++'
env['AR'] = mingw_prefix + 'ar'
env['RANLIB'] = mingw_prefix + 'ranlib'
env['LINK'] = mingw_prefix + 'g++'
env['AS'] = mingw_prefix + 'as'
env['WIN32DEFPREFIX'] = ''
env['WIN32DEFSUFFIX'] = '.def'
env['SHOBJSUFFIX'] = '.o'
env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 1
env['RC'] = mingw_prefix + 'windres'
env['RCFLAGS'] = SCons.Util.CLVar('')
env['RCCOM'] = '$RC $_CPPDEFFLAGS $_CPPINCFLAGS ${INCPREFIX}${SOURCE.dir} $RCFLAGS -i $SOURCE -o $TARGET'
env['BUILDERS']['RES'] = res_builder
# Some setting from the platform also have to be overridden:
env['OBJPREFIX'] = ''
env['OBJSUFFIX'] = '.o'
env['SHOBJPREFIX'] = '$OBJPREFIX'
env['SHOBJSUFFIX'] = '$OBJSUFFIX'
env['PROGPREFIX'] = ''
env['PROGSUFFIX'] = '.exe'
env['LIBPREFIX'] = 'lib'
env['LIBSUFFIX'] = '.a'
env['SHLIBPREFIX'] = ''
env['SHLIBSUFFIX'] = '.dll'
env['LIBPREFIXES'] = [ 'lib', '' ]
env['LIBSUFFIXES'] = [ '.a', '.lib' ]
# MinGW port of gdb does not handle well dwarf debug info which is the
# default in recent gcc versions
env.AppendUnique(CCFLAGS = ['-gstabs'])
env.AppendUnique(CPPDEFINES = [('__MSVCRT_VERSION__', '0x0700')])
#env.AppendUnique(LIBS = ['iberty'])
env.AppendUnique(SHLINKFLAGS = ['-Wl,--enable-stdcall-fixup'])
#env.AppendUnique(SHLINKFLAGS = ['-Wl,--kill-at'])
# Avoid depending on gcc runtime DLLs
env.AppendUnique(LINKFLAGS = ['-static-libgcc'])
env.AddMethod(compile_without_gstabs, 'compile_without_gstabs')
def exists(env):
return find(env)
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