blob: d28b1b368adc2dde459c1334f540e51ff73f61de [file] [log] [blame]
Greg Ward7c6395a2000-06-21 03:33:03 +00001"""distutils.cygwinccompiler
2
Greg Wardf34506a2000-06-29 22:57:55 +00003Provides the CygwinCCompiler class, a subclass of UnixCCompiler that
4handles the Cygwin port of the GNU C compiler to Windows. It also contains
5the Mingw32CCompiler class which handles the mingw32 port of GCC (same as
6cygwin in no-cygwin mode).
Greg Ward7c6395a2000-06-21 03:33:03 +00007"""
8
Greg Wardbf5c7092000-08-02 01:31:56 +00009# problems:
10#
11# * if you use a msvc compiled python version (1.5.2)
12# 1. you have to insert a __GNUC__ section in its config.h
13# 2. you have to generate a import library for its dll
14# - create a def-file for python??.dll
15# - create a import library using
16# dlltool --dllname python15.dll --def python15.def \
17# --output-lib libpython15.a
18#
19# see also http://starship.python.net/crew/kernr/mingw32/Notes.html
20#
Fred Drakeb94b8492001-12-06 20:51:35 +000021# * We put export_symbols in a def-file, and don't use
Greg Wardbf5c7092000-08-02 01:31:56 +000022# --export-all-symbols because it doesn't worked reliable in some
23# tested configurations. And because other windows compilers also
24# need their symbols specified this no serious problem.
25#
26# tested configurations:
Fred Drakeb94b8492001-12-06 20:51:35 +000027#
28# * cygwin gcc 2.91.57/ld 2.9.4/dllwrap 0.2.4 works
Greg Wardbf5c7092000-08-02 01:31:56 +000029# (after patching python's config.h and for C++ some other include files)
30# see also http://starship.python.net/crew/kernr/mingw32/Notes.html
Fred Drakeb94b8492001-12-06 20:51:35 +000031# * mingw32 gcc 2.95.2/ld 2.9.4/dllwrap 0.2.4 works
32# (ld doesn't support -shared, so we use dllwrap)
Greg Wardbf5c7092000-08-02 01:31:56 +000033# * cygwin gcc 2.95.2/ld 2.10.90/dllwrap 2.10.90 works now
34# - its dllwrap doesn't work, there is a bug in binutils 2.10.90
Greg Ward7483d682000-09-01 01:24:31 +000035# see also http://sources.redhat.com/ml/cygwin/2000-06/msg01274.html
Jason Tishler21664d82003-04-14 12:51:26 +000036# - using gcc -mdll instead dllwrap doesn't work without -static because
37# it tries to link against dlls instead their import libraries. (If
38# it finds the dll first.)
39# By specifying -static we force ld to link against the import libraries,
40# this is windows standard and there are normally not the necessary symbols
41# in the dlls.
Fred Drakeb94b8492001-12-06 20:51:35 +000042# *** only the version of June 2000 shows these problems
Jason Tishler21664d82003-04-14 12:51:26 +000043# * cygwin gcc 3.2/ld 2.13.90 works
44# (ld supports -shared)
45# * mingw gcc 3.2/ld 2.13 works
46# (ld supports -shared)
Greg Wardbf5c7092000-08-02 01:31:56 +000047
Tarek Ziadé015c8102009-06-10 18:56:35 +000048import os
49import sys
50import copy
Antoine Pitrou3c678c32013-09-30 22:28:10 +020051from subprocess import Popen, PIPE, check_output
Tarek Ziadé015c8102009-06-10 18:56:35 +000052import re
53
Greg Ward42406482000-09-27 02:08:14 +000054from distutils.ccompiler import gen_preprocess_options, gen_lib_options
Greg Ward7c6395a2000-06-21 03:33:03 +000055from distutils.unixccompiler import UnixCCompiler
Greg Wardbf5c7092000-08-02 01:31:56 +000056from distutils.file_util import write_file
Antoine Pitrou6a9c0e52013-09-30 22:29:48 +020057from distutils.errors import (DistutilsExecError, CCompilerError,
58 CompileError, UnknownFileError)
Jeremy Hyltoncd8a1142002-06-04 20:14:43 +000059from distutils import log
Tarek Ziadé015c8102009-06-10 18:56:35 +000060from distutils.version import LooseVersion
61from distutils.spawn import find_executable
Greg Ward7c6395a2000-06-21 03:33:03 +000062
Christian Heimescbf3b5c2007-12-03 21:02:03 +000063def get_msvcr():
64 """Include the appropriate MSVC runtime library if Python was built
65 with MSVC 7.0 or later.
66 """
67 msc_pos = sys.version.find('MSC v.')
68 if msc_pos != -1:
69 msc_ver = sys.version[msc_pos+6:msc_pos+10]
70 if msc_ver == '1300':
71 # MSVC 7.0
72 return ['msvcr70']
73 elif msc_ver == '1310':
74 # MSVC 7.1
75 return ['msvcr71']
76 elif msc_ver == '1400':
77 # VS2005 / MSVC 8.0
78 return ['msvcr80']
79 elif msc_ver == '1500':
80 # VS2008 / MSVC 9.0
81 return ['msvcr90']
Martin v. Löwis7d30b802012-07-10 07:07:06 +020082 elif msc_ver == '1600':
83 # VS2010 / MSVC 10.0
84 return ['msvcr100']
Christian Heimescbf3b5c2007-12-03 21:02:03 +000085 else:
Tarek Ziadéff543362009-06-11 09:25:41 +000086 raise ValueError("Unknown MS Compiler version %s " % msc_ver)
Christian Heimescbf3b5c2007-12-03 21:02:03 +000087
88
Tarek Ziadée653a7d2009-06-11 10:00:56 +000089class CygwinCCompiler(UnixCCompiler):
90 """ Handles the Cygwin port of the GNU C compiler to Windows.
91 """
Greg Ward7c6395a2000-06-21 03:33:03 +000092 compiler_type = 'cygwin'
Greg Wardb1dceae2000-08-13 00:43:56 +000093 obj_extension = ".o"
94 static_lib_extension = ".a"
95 shared_lib_extension = ".dll"
96 static_lib_format = "lib%s%s"
97 shared_lib_format = "%s%s"
98 exe_extension = ".exe"
Fred Drakeb94b8492001-12-06 20:51:35 +000099
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000100 def __init__(self, verbose=0, dry_run=0, force=0):
Greg Ward7c6395a2000-06-21 03:33:03 +0000101
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000102 UnixCCompiler.__init__(self, verbose, dry_run, force)
Greg Ward7c6395a2000-06-21 03:33:03 +0000103
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000104 status, details = check_config_h()
Greg Warde8e9d112000-08-13 01:18:55 +0000105 self.debug_print("Python's GCC status: %s (details: %s)" %
106 (status, details))
107 if status is not CONFIG_H_OK:
Greg Wardbf5c7092000-08-02 01:31:56 +0000108 self.warn(
Tim Peters182b5ac2004-07-18 06:16:08 +0000109 "Python's pyconfig.h doesn't seem to support your compiler. "
Jeremy Hylton1bba31d2002-06-13 17:28:18 +0000110 "Reason: %s. "
111 "Compiling may fail because of undefined preprocessor macros."
112 % details)
Fred Drakeb94b8492001-12-06 20:51:35 +0000113
Jeremy Hylton1bba31d2002-06-13 17:28:18 +0000114 self.gcc_version, self.ld_version, self.dllwrap_version = \
Greg Wardbf5c7092000-08-02 01:31:56 +0000115 get_versions()
Greg Wardb1dceae2000-08-13 00:43:56 +0000116 self.debug_print(self.compiler_type + ": gcc %s, ld %s, dllwrap %s\n" %
Fred Drakeb94b8492001-12-06 20:51:35 +0000117 (self.gcc_version,
118 self.ld_version,
Greg Wardbf5c7092000-08-02 01:31:56 +0000119 self.dllwrap_version) )
120
Jason Tishler21664d82003-04-14 12:51:26 +0000121 # ld_version >= "2.10.90" and < "2.13" should also be able to use
Greg Wardbf5c7092000-08-02 01:31:56 +0000122 # gcc -mdll instead of dllwrap
Fred Drakeb94b8492001-12-06 20:51:35 +0000123 # Older dllwraps had own version numbers, newer ones use the
Greg Wardbf5c7092000-08-02 01:31:56 +0000124 # same as the rest of binutils ( also ld )
125 # dllwrap 2.10.90 is buggy
Fred Drakeb94b8492001-12-06 20:51:35 +0000126 if self.ld_version >= "2.10.90":
Greg Ward42406482000-09-27 02:08:14 +0000127 self.linker_dll = "gcc"
Greg Wardbf5c7092000-08-02 01:31:56 +0000128 else:
Greg Ward42406482000-09-27 02:08:14 +0000129 self.linker_dll = "dllwrap"
Greg Wardbf5c7092000-08-02 01:31:56 +0000130
Jason Tishler21664d82003-04-14 12:51:26 +0000131 # ld_version >= "2.13" support -shared so use it instead of
132 # -mdll -static
133 if self.ld_version >= "2.13":
134 shared_option = "-shared"
135 else:
136 shared_option = "-mdll -static"
137
Greg Wardf34506a2000-06-29 22:57:55 +0000138 # Hard-code GCC because that's what this is all about.
139 # XXX optimization, warnings etc. should be customizable.
Greg Wardbf5c7092000-08-02 01:31:56 +0000140 self.set_executables(compiler='gcc -mcygwin -O -Wall',
141 compiler_so='gcc -mcygwin -mdll -O -Wall',
Hye-Shik Chang2400e932004-06-05 18:37:53 +0000142 compiler_cxx='g++ -mcygwin -O -Wall',
Greg Wardbf5c7092000-08-02 01:31:56 +0000143 linker_exe='gcc -mcygwin',
Jason Tishler21664d82003-04-14 12:51:26 +0000144 linker_so=('%s -mcygwin %s' %
145 (self.linker_dll, shared_option)))
Greg Ward7c6395a2000-06-21 03:33:03 +0000146
Fred Drakeb94b8492001-12-06 20:51:35 +0000147 # cygwin and mingw32 need different sets of libraries
Greg Wardbf5c7092000-08-02 01:31:56 +0000148 if self.gcc_version == "2.91.57":
149 # cygwin shouldn't need msvcrt, but without the dlls will crash
150 # (gcc version 2.91.57) -- perhaps something about initialization
151 self.dll_libraries=["msvcrt"]
Fred Drakeb94b8492001-12-06 20:51:35 +0000152 self.warn(
Greg Wardbf5c7092000-08-02 01:31:56 +0000153 "Consider upgrading to a newer version of gcc")
154 else:
Tim Peters6db15d72004-08-04 02:36:18 +0000155 # Include the appropriate MSVC runtime library if Python was built
Christian Heimescbf3b5c2007-12-03 21:02:03 +0000156 # with MSVC 7.0 or later.
157 self.dll_libraries = get_msvcr()
Fred Drakeb94b8492001-12-06 20:51:35 +0000158
Jeremy Hylton1b046e42002-06-18 18:48:55 +0000159 def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts):
Ezio Melotti13925002011-03-16 11:05:33 +0200160 """Compiles the source by spawning GCC and windres if needed."""
Jeremy Hylton1b046e42002-06-18 18:48:55 +0000161 if ext == '.rc' or ext == '.res':
162 # gcc needs '.res' and '.rc' compiled to object files !!!
163 try:
164 self.spawn(["windres", "-i", src, "-o", obj])
Guido van Rossumb940e112007-01-10 16:19:56 +0000165 except DistutilsExecError as msg:
Collin Winter5b7e9d72007-08-30 03:52:21 +0000166 raise CompileError(msg)
Jeremy Hylton1b046e42002-06-18 18:48:55 +0000167 else: # for other files use the C-compiler
168 try:
169 self.spawn(self.compiler_so + cc_args + [src, '-o', obj] +
170 extra_postargs)
Guido van Rossumb940e112007-01-10 16:19:56 +0000171 except DistutilsExecError as msg:
Collin Winter5b7e9d72007-08-30 03:52:21 +0000172 raise CompileError(msg)
Greg Ward42406482000-09-27 02:08:14 +0000173
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000174 def link(self, target_desc, objects, output_filename, output_dir=None,
175 libraries=None, library_dirs=None, runtime_library_dirs=None,
176 export_symbols=None, debug=0, extra_preargs=None,
177 extra_postargs=None, build_temp=None, target_lang=None):
178 """Link the objects."""
Greg Wardb1dceae2000-08-13 00:43:56 +0000179 # use separate copies, so we can modify the lists
180 extra_preargs = copy.copy(extra_preargs or [])
181 libraries = copy.copy(libraries or [])
Greg Ward42406482000-09-27 02:08:14 +0000182 objects = copy.copy(objects or [])
Fred Drakeb94b8492001-12-06 20:51:35 +0000183
Greg Wardbf5c7092000-08-02 01:31:56 +0000184 # Additional libraries
Greg Wardf34506a2000-06-29 22:57:55 +0000185 libraries.extend(self.dll_libraries)
Greg Wardbf5c7092000-08-02 01:31:56 +0000186
Greg Ward42406482000-09-27 02:08:14 +0000187 # handle export symbols by creating a def-file
188 # with executables this only works with gcc/ld as linker
189 if ((export_symbols is not None) and
190 (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
191 # (The linker doesn't do anything if output is up-to-date.
192 # So it would probably better to check if we really need this,
Fred Drakeb94b8492001-12-06 20:51:35 +0000193 # but for this we had to insert some unchanged parts of
194 # UnixCCompiler, and this is not what we want.)
Greg Ward42406482000-09-27 02:08:14 +0000195
Fred Drakeb94b8492001-12-06 20:51:35 +0000196 # we want to put some files in the same directory as the
Greg Ward42406482000-09-27 02:08:14 +0000197 # object files are, build_temp doesn't help much
198 # where are the object files
199 temp_dir = os.path.dirname(objects[0])
200 # name of dll to give the helper files the same base name
201 (dll_name, dll_extension) = os.path.splitext(
202 os.path.basename(output_filename))
203
204 # generate the filenames for these files
Greg Wardbf5c7092000-08-02 01:31:56 +0000205 def_file = os.path.join(temp_dir, dll_name + ".def")
Greg Ward42406482000-09-27 02:08:14 +0000206 lib_file = os.path.join(temp_dir, 'lib' + dll_name + ".a")
Fred Drakeb94b8492001-12-06 20:51:35 +0000207
Greg Ward42406482000-09-27 02:08:14 +0000208 # Generate .def file
Greg Wardbf5c7092000-08-02 01:31:56 +0000209 contents = [
210 "LIBRARY %s" % os.path.basename(output_filename),
211 "EXPORTS"]
Greg Ward7c6395a2000-06-21 03:33:03 +0000212 for sym in export_symbols:
Greg Wardbf5c7092000-08-02 01:31:56 +0000213 contents.append(sym)
214 self.execute(write_file, (def_file, contents),
215 "writing %s" % def_file)
216
Greg Ward42406482000-09-27 02:08:14 +0000217 # next add options for def-file and to creating import libraries
218
219 # dllwrap uses different options than gcc/ld
220 if self.linker_dll == "dllwrap":
Jeremy Hyltona2f99892002-06-04 20:26:44 +0000221 extra_preargs.extend(["--output-lib", lib_file])
Greg Wardbf5c7092000-08-02 01:31:56 +0000222 # for dllwrap we have to use a special option
Greg Ward42406482000-09-27 02:08:14 +0000223 extra_preargs.extend(["--def", def_file])
224 # we use gcc/ld here and can be sure ld is >= 2.9.10
225 else:
226 # doesn't work: bfd_close build\...\libfoo.a: Invalid operation
227 #extra_preargs.extend(["-Wl,--out-implib,%s" % lib_file])
Jeremy Hyltona2f99892002-06-04 20:26:44 +0000228 # for gcc/ld the def-file is specified as any object files
Greg Ward42406482000-09-27 02:08:14 +0000229 objects.append(def_file)
230
231 #end: if ((export_symbols is not None) and
Fred Drake132dce22000-12-12 23:11:42 +0000232 # (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
Fred Drakeb94b8492001-12-06 20:51:35 +0000233
Greg Wardf34506a2000-06-29 22:57:55 +0000234 # who wants symbols and a many times larger output file
Fred Drakeb94b8492001-12-06 20:51:35 +0000235 # should explicitly switch the debug mode on
Greg Wardbf5c7092000-08-02 01:31:56 +0000236 # otherwise we let dllwrap/ld strip the output file
Fred Drakeb94b8492001-12-06 20:51:35 +0000237 # (On my machine: 10KB < stripped_file < ??100KB
Greg Ward42406482000-09-27 02:08:14 +0000238 # unstripped_file = stripped_file + XXX KB
Fred Drakeb94b8492001-12-06 20:51:35 +0000239 # ( XXX=254 for a typical python extension))
240 if not debug:
241 extra_preargs.append("-s")
242
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000243 UnixCCompiler.link(self, target_desc, objects, output_filename,
244 output_dir, libraries, library_dirs,
Greg Ward42406482000-09-27 02:08:14 +0000245 runtime_library_dirs,
246 None, # export_symbols, we do this in our def-file
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000247 debug, extra_preargs, extra_postargs, build_temp,
Gustavo Niemeyer6b016852002-11-05 16:12:02 +0000248 target_lang)
Fred Drakeb94b8492001-12-06 20:51:35 +0000249
Greg Ward42406482000-09-27 02:08:14 +0000250 # -- Miscellaneous methods -----------------------------------------
251
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000252 def object_filenames(self, source_filenames, strip_dir=0, output_dir=''):
253 """Adds supports for rc and res files."""
254 if output_dir is None:
255 output_dir = ''
Greg Ward42406482000-09-27 02:08:14 +0000256 obj_names = []
257 for src_name in source_filenames:
258 # use normcase to make sure '.rc' is really '.rc' and not '.RC'
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000259 base, ext = os.path.splitext(os.path.normcase(src_name))
Greg Ward42406482000-09-27 02:08:14 +0000260 if ext not in (self.src_extensions + ['.rc','.res']):
Collin Winter5b7e9d72007-08-30 03:52:21 +0000261 raise UnknownFileError("unknown file type '%s' (from '%s')" % \
262 (ext, src_name))
Greg Ward42406482000-09-27 02:08:14 +0000263 if strip_dir:
264 base = os.path.basename (base)
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000265 if ext in ('.res', '.rc'):
Greg Ward42406482000-09-27 02:08:14 +0000266 # these need to be compiled to object files
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000267 obj_names.append (os.path.join(output_dir,
268 base + ext + self.obj_extension))
Greg Ward42406482000-09-27 02:08:14 +0000269 else:
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000270 obj_names.append (os.path.join(output_dir,
271 base + self.obj_extension))
Greg Ward42406482000-09-27 02:08:14 +0000272 return obj_names
273
Greg Ward7c6395a2000-06-21 03:33:03 +0000274# the same as cygwin plus some additional parameters
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000275class Mingw32CCompiler(CygwinCCompiler):
276 """ Handles the Mingw32 port of the GNU C compiler to Windows.
277 """
Greg Ward7c6395a2000-06-21 03:33:03 +0000278 compiler_type = 'mingw32'
279
Tarek Ziadée653a7d2009-06-11 10:00:56 +0000280 def __init__(self, verbose=0, dry_run=0, force=0):
Greg Ward7c6395a2000-06-21 03:33:03 +0000281
282 CygwinCCompiler.__init__ (self, verbose, dry_run, force)
Fred Drakeb94b8492001-12-06 20:51:35 +0000283
Jason Tishler21664d82003-04-14 12:51:26 +0000284 # ld_version >= "2.13" support -shared so use it instead of
285 # -mdll -static
286 if self.ld_version >= "2.13":
287 shared_option = "-shared"
288 else:
289 shared_option = "-mdll -static"
290
Greg Wardbf5c7092000-08-02 01:31:56 +0000291 # A real mingw32 doesn't need to specify a different entry point,
292 # but cygwin 2.91.57 in no-cygwin-mode needs it.
293 if self.gcc_version <= "2.91.57":
294 entry_point = '--entry _DllMain@12'
295 else:
296 entry_point = ''
Greg Ward7c6395a2000-06-21 03:33:03 +0000297
Antoine Pitrou6a9c0e52013-09-30 22:29:48 +0200298 if is_cygwingcc():
299 raise CCompilerError(
300 'Cygwin gcc cannot be used with --compiler=mingw32')
Antoine Pitrou3c678c32013-09-30 22:28:10 +0200301
Antoine Pitrou6a9c0e52013-09-30 22:29:48 +0200302 self.set_executables(compiler='gcc -O -Wall',
303 compiler_so='gcc -mdll -O -Wall',
304 compiler_cxx='g++ -O -Wall',
305 linker_exe='gcc',
306 linker_so='%s %s %s'
Jason Tishler21664d82003-04-14 12:51:26 +0000307 % (self.linker_dll, shared_option,
308 entry_point))
Greg Wardbf5c7092000-08-02 01:31:56 +0000309 # Maybe we should also append -mthreads, but then the finished
310 # dlls need another dll (mingwm10.dll see Mingw32 docs)
Fred Drakeb94b8492001-12-06 20:51:35 +0000311 # (-mthreads: Support thread-safe exception handling on `Mingw32')
312
313 # no additional libraries needed
Greg Wardbf5c7092000-08-02 01:31:56 +0000314 self.dll_libraries=[]
Fred Drakeb94b8492001-12-06 20:51:35 +0000315
Tim Peters6db15d72004-08-04 02:36:18 +0000316 # Include the appropriate MSVC runtime library if Python was built
Christian Heimescbf3b5c2007-12-03 21:02:03 +0000317 # with MSVC 7.0 or later.
318 self.dll_libraries = get_msvcr()
Martin v. Löwis7db57b32004-08-03 12:41:42 +0000319
Martin v. Löwis4f1cd8b2001-07-26 13:41:06 +0000320# Because these compilers aren't configured in Python's pyconfig.h file by
Greg Wardbf5c7092000-08-02 01:31:56 +0000321# default, we should at least warn the user if he is using a unmodified
322# version.
323
Greg Warde8e9d112000-08-13 01:18:55 +0000324CONFIG_H_OK = "ok"
325CONFIG_H_NOTOK = "not ok"
326CONFIG_H_UNCERTAIN = "uncertain"
327
Greg Wardbf5c7092000-08-02 01:31:56 +0000328def check_config_h():
Tarek Ziadé015c8102009-06-10 18:56:35 +0000329 """Check if the current Python installation appears amenable to building
330 extensions with GCC.
Greg Warde8e9d112000-08-13 01:18:55 +0000331
Tarek Ziadé015c8102009-06-10 18:56:35 +0000332 Returns a tuple (status, details), where 'status' is one of the following
333 constants:
334
335 - CONFIG_H_OK: all is well, go ahead and compile
336 - CONFIG_H_NOTOK: doesn't look good
337 - CONFIG_H_UNCERTAIN: not sure -- unable to read pyconfig.h
338
Greg Warde8e9d112000-08-13 01:18:55 +0000339 'details' is a human-readable string explaining the situation.
340
341 Note there are two ways to conclude "OK": either 'sys.version' contains
342 the string "GCC" (implying that this Python was built with GCC), or the
Martin v. Löwis4f1cd8b2001-07-26 13:41:06 +0000343 installed "pyconfig.h" contains the string "__GNUC__".
Greg Wardbf5c7092000-08-02 01:31:56 +0000344 """
Greg Warde8e9d112000-08-13 01:18:55 +0000345
346 # XXX since this function also checks sys.version, it's not strictly a
Martin v. Löwis4f1cd8b2001-07-26 13:41:06 +0000347 # "pyconfig.h" check -- should probably be renamed...
Greg Wardbf5c7092000-08-02 01:31:56 +0000348
349 from distutils import sysconfig
Fred Drakeb94b8492001-12-06 20:51:35 +0000350
Tarek Ziadé015c8102009-06-10 18:56:35 +0000351 # if sys.version contains GCC then python was compiled with GCC, and the
352 # pyconfig.h file should be OK
353 if "GCC" in sys.version:
354 return CONFIG_H_OK, "sys.version mentions 'GCC'"
355
356 # let's see if __GNUC__ is mentioned in python.h
Greg Warde8e9d112000-08-13 01:18:55 +0000357 fn = sysconfig.get_config_h_filename()
Greg Wardbf5c7092000-08-02 01:31:56 +0000358 try:
Éric Araujoc6d7ead2010-11-06 02:58:56 +0000359 config_h = open(fn)
360 try:
Tarek Ziadé015c8102009-06-10 18:56:35 +0000361 if "__GNUC__" in config_h.read():
362 return CONFIG_H_OK, "'%s' mentions '__GNUC__'" % fn
363 else:
364 return CONFIG_H_NOTOK, "'%s' does not mention '__GNUC__'" % fn
Éric Araujoc6d7ead2010-11-06 02:58:56 +0000365 finally:
366 config_h.close()
Andrew Svetlovf7a17b42012-12-25 16:47:37 +0200367 except OSError as exc:
Greg Warde8e9d112000-08-13 01:18:55 +0000368 return (CONFIG_H_UNCERTAIN,
369 "couldn't read '%s': %s" % (fn, exc.strerror))
370
Tarek Ziadé41fe2822009-07-12 08:39:08 +0000371RE_VERSION = re.compile(b'(\d+\.\d+(\.\d+)*)')
Greg Warde8e9d112000-08-13 01:18:55 +0000372
Tarek Ziadé015c8102009-06-10 18:56:35 +0000373def _find_exe_version(cmd):
374 """Find the version of an executable by running `cmd` in the shell.
Greg Warde8e9d112000-08-13 01:18:55 +0000375
Tarek Ziadé015c8102009-06-10 18:56:35 +0000376 If the command is not found, or the output does not match
377 `RE_VERSION`, returns None.
378 """
379 executable = cmd.split()[0]
380 if find_executable(executable) is None:
381 return None
382 out = Popen(cmd, shell=True, stdout=PIPE).stdout
383 try:
384 out_string = out.read()
385 finally:
386 out.close()
387 result = RE_VERSION.search(out_string)
388 if result is None:
389 return None
Tarek Ziadé41fe2822009-07-12 08:39:08 +0000390 # LooseVersion works with strings
391 # so we need to decode our bytes
392 return LooseVersion(result.group(1).decode())
Greg Wardbf5c7092000-08-02 01:31:56 +0000393
394def get_versions():
395 """ Try to find out the versions of gcc, ld and dllwrap.
Fred Drakeb94b8492001-12-06 20:51:35 +0000396
Tarek Ziadé015c8102009-06-10 18:56:35 +0000397 If not possible it returns None for it.
398 """
399 commands = ['gcc -dumpversion', 'ld -v', 'dllwrap --version']
400 return tuple([_find_exe_version(cmd) for cmd in commands])
Antoine Pitrou3c678c32013-09-30 22:28:10 +0200401
402def is_cygwingcc():
403 '''Try to determine if the gcc that would be used is from cygwin.'''
404 out_string = check_output(['gcc', '-dumpmachine'])
405 return out_string.strip().endswith(b'cygwin')