| 1 | """distutils.cygwinccompiler
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| 2 |
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| 3 | Provides the CygwinCCompiler class, a subclass of UnixCCompiler that
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| 4 | handles the Cygwin port of the GNU C compiler to Windows. It also contains
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| 5 | the Mingw32CCompiler class which handles the mingw32 port of GCC (same as
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| 6 | cygwin in no-cygwin mode).
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| 7 | """
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| 8 |
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| 9 | # problems:
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| 10 | #
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| 11 | # * if you use a msvc compiled python version (1.5.2)
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| 12 | # 1. you have to insert a __GNUC__ section in its config.h
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| 13 | # 2. you have to generate a import library for its dll
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| 14 | # - create a def-file for python??.dll
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| 15 | # - create a import library using
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| 16 | # dlltool --dllname python15.dll --def python15.def \
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| 17 | # --output-lib libpython15.a
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| 18 | #
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| 19 | # see also http://starship.python.net/crew/kernr/mingw32/Notes.html
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| 20 | #
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| 21 | # * We put export_symbols in a def-file, and don't use
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| 22 | # --export-all-symbols because it doesn't worked reliable in some
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| 23 | # tested configurations. And because other windows compilers also
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| 24 | # need their symbols specified this no serious problem.
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| 25 | #
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| 26 | # tested configurations:
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| 27 | #
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| 28 | # * cygwin gcc 2.91.57/ld 2.9.4/dllwrap 0.2.4 works
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| 29 | # (after patching python's config.h and for C++ some other include files)
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| 30 | # see also http://starship.python.net/crew/kernr/mingw32/Notes.html
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| 31 | # * mingw32 gcc 2.95.2/ld 2.9.4/dllwrap 0.2.4 works
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| 32 | # (ld doesn't support -shared, so we use dllwrap)
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| 33 | # * cygwin gcc 2.95.2/ld 2.10.90/dllwrap 2.10.90 works now
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| 34 | # - its dllwrap doesn't work, there is a bug in binutils 2.10.90
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| 35 | # see also http://sources.redhat.com/ml/cygwin/2000-06/msg01274.html
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| 36 | # - using gcc -mdll instead dllwrap doesn't work without -static because
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| 37 | # it tries to link against dlls instead their import libraries. (If
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| 38 | # it finds the dll first.)
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| 39 | # By specifying -static we force ld to link against the import libraries,
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| 40 | # this is windows standard and there are normally not the necessary symbols
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| 41 | # in the dlls.
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| 42 | # *** only the version of June 2000 shows these problems
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| 43 | # * cygwin gcc 3.2/ld 2.13.90 works
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| 44 | # (ld supports -shared)
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| 45 | # * mingw gcc 3.2/ld 2.13 works
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| 46 | # (ld supports -shared)
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| 47 |
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| 48 | # This module should be kept compatible with Python 2.1.
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| 49 |
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| 50 | __revision__ = "$Id: cygwinccompiler.py 37828 2004-11-10 22:23:15Z loewis $"
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| 51 |
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| 52 | import os,sys,copy
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| 53 | from distutils.ccompiler import gen_preprocess_options, gen_lib_options
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| 54 | from distutils.unixccompiler import UnixCCompiler
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| 55 | from distutils.file_util import write_file
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| 56 | from distutils.errors import DistutilsExecError, CompileError, UnknownFileError
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| 57 | from distutils import log
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| 58 |
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| 59 | class CygwinCCompiler (UnixCCompiler):
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| 60 |
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| 61 | compiler_type = 'cygwin'
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| 62 | obj_extension = ".o"
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| 63 | static_lib_extension = ".a"
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| 64 | shared_lib_extension = ".dll"
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| 65 | static_lib_format = "lib%s%s"
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| 66 | shared_lib_format = "%s%s"
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| 67 | exe_extension = ".exe"
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| 68 |
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| 69 | def __init__ (self, verbose=0, dry_run=0, force=0):
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| 70 |
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| 71 | UnixCCompiler.__init__ (self, verbose, dry_run, force)
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| 72 |
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| 73 | (status, details) = check_config_h()
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| 74 | self.debug_print("Python's GCC status: %s (details: %s)" %
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| 75 | (status, details))
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| 76 | if status is not CONFIG_H_OK:
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| 77 | self.warn(
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| 78 | "Python's pyconfig.h doesn't seem to support your compiler. "
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| 79 | "Reason: %s. "
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| 80 | "Compiling may fail because of undefined preprocessor macros."
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| 81 | % details)
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| 82 |
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| 83 | self.gcc_version, self.ld_version, self.dllwrap_version = \
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| 84 | get_versions()
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| 85 | self.debug_print(self.compiler_type + ": gcc %s, ld %s, dllwrap %s\n" %
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| 86 | (self.gcc_version,
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| 87 | self.ld_version,
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| 88 | self.dllwrap_version) )
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| 89 |
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| 90 | # ld_version >= "2.10.90" and < "2.13" should also be able to use
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| 91 | # gcc -mdll instead of dllwrap
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| 92 | # Older dllwraps had own version numbers, newer ones use the
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| 93 | # same as the rest of binutils ( also ld )
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| 94 | # dllwrap 2.10.90 is buggy
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| 95 | if self.ld_version >= "2.10.90":
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| 96 | self.linker_dll = "gcc"
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| 97 | else:
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| 98 | self.linker_dll = "dllwrap"
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| 99 |
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| 100 | # ld_version >= "2.13" support -shared so use it instead of
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| 101 | # -mdll -static
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| 102 | if self.ld_version >= "2.13":
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| 103 | shared_option = "-shared"
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| 104 | else:
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| 105 | shared_option = "-mdll -static"
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| 106 |
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| 107 | # Hard-code GCC because that's what this is all about.
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| 108 | # XXX optimization, warnings etc. should be customizable.
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| 109 | self.set_executables(compiler='gcc -mcygwin -O -Wall',
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| 110 | compiler_so='gcc -mcygwin -mdll -O -Wall',
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| 111 | compiler_cxx='g++ -mcygwin -O -Wall',
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| 112 | linker_exe='gcc -mcygwin',
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| 113 | linker_so=('%s -mcygwin %s' %
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| 114 | (self.linker_dll, shared_option)))
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| 115 |
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| 116 | # cygwin and mingw32 need different sets of libraries
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| 117 | if self.gcc_version == "2.91.57":
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| 118 | # cygwin shouldn't need msvcrt, but without the dlls will crash
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| 119 | # (gcc version 2.91.57) -- perhaps something about initialization
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| 120 | self.dll_libraries=["msvcrt"]
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| 121 | self.warn(
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| 122 | "Consider upgrading to a newer version of gcc")
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| 123 | else:
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| 124 | self.dll_libraries=[]
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| 125 | # Include the appropriate MSVC runtime library if Python was built
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| 126 | # with MSVC 7.0 or 7.1.
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| 127 | msc_pos = sys.version.find('MSC v.')
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| 128 | if msc_pos != -1:
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| 129 | msc_ver = sys.version[msc_pos+6:msc_pos+10]
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| 130 | if msc_ver == '1300':
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| 131 | # MSVC 7.0
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| 132 | self.dll_libraries = ['msvcr70']
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| 133 | elif msc_ver == '1310':
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| 134 | # MSVC 7.1
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| 135 | self.dll_libraries = ['msvcr71']
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| 136 |
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| 137 | # __init__ ()
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| 138 |
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| 139 |
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| 140 | def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts):
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| 141 | if ext == '.rc' or ext == '.res':
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| 142 | # gcc needs '.res' and '.rc' compiled to object files !!!
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| 143 | try:
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| 144 | self.spawn(["windres", "-i", src, "-o", obj])
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| 145 | except DistutilsExecError, msg:
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| 146 | raise CompileError, msg
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| 147 | else: # for other files use the C-compiler
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| 148 | try:
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| 149 | self.spawn(self.compiler_so + cc_args + [src, '-o', obj] +
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| 150 | extra_postargs)
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| 151 | except DistutilsExecError, msg:
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| 152 | raise CompileError, msg
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| 153 |
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| 154 | def link (self,
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| 155 | target_desc,
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| 156 | objects,
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| 157 | output_filename,
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| 158 | output_dir=None,
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| 159 | libraries=None,
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| 160 | library_dirs=None,
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| 161 | runtime_library_dirs=None,
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| 162 | export_symbols=None,
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| 163 | debug=0,
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| 164 | extra_preargs=None,
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| 165 | extra_postargs=None,
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| 166 | build_temp=None,
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| 167 | target_lang=None):
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| 168 |
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| 169 | # use separate copies, so we can modify the lists
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| 170 | extra_preargs = copy.copy(extra_preargs or [])
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| 171 | libraries = copy.copy(libraries or [])
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| 172 | objects = copy.copy(objects or [])
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| 173 |
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| 174 | # Additional libraries
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| 175 | libraries.extend(self.dll_libraries)
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| 176 |
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| 177 | # handle export symbols by creating a def-file
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| 178 | # with executables this only works with gcc/ld as linker
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| 179 | if ((export_symbols is not None) and
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| 180 | (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
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| 181 | # (The linker doesn't do anything if output is up-to-date.
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| 182 | # So it would probably better to check if we really need this,
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| 183 | # but for this we had to insert some unchanged parts of
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| 184 | # UnixCCompiler, and this is not what we want.)
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| 185 |
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| 186 | # we want to put some files in the same directory as the
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| 187 | # object files are, build_temp doesn't help much
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| 188 | # where are the object files
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| 189 | temp_dir = os.path.dirname(objects[0])
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| 190 | # name of dll to give the helper files the same base name
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| 191 | (dll_name, dll_extension) = os.path.splitext(
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| 192 | os.path.basename(output_filename))
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| 193 |
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| 194 | # generate the filenames for these files
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| 195 | def_file = os.path.join(temp_dir, dll_name + ".def")
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| 196 | lib_file = os.path.join(temp_dir, 'lib' + dll_name + ".a")
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| 197 |
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| 198 | # Generate .def file
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| 199 | contents = [
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| 200 | "LIBRARY %s" % os.path.basename(output_filename),
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| 201 | "EXPORTS"]
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| 202 | for sym in export_symbols:
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| 203 | contents.append(sym)
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| 204 | self.execute(write_file, (def_file, contents),
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| 205 | "writing %s" % def_file)
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| 206 |
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| 207 | # next add options for def-file and to creating import libraries
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| 208 |
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| 209 | # dllwrap uses different options than gcc/ld
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| 210 | if self.linker_dll == "dllwrap":
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| 211 | extra_preargs.extend(["--output-lib", lib_file])
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| 212 | # for dllwrap we have to use a special option
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| 213 | extra_preargs.extend(["--def", def_file])
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| 214 | # we use gcc/ld here and can be sure ld is >= 2.9.10
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| 215 | else:
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| 216 | # doesn't work: bfd_close build\...\libfoo.a: Invalid operation
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| 217 | #extra_preargs.extend(["-Wl,--out-implib,%s" % lib_file])
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| 218 | # for gcc/ld the def-file is specified as any object files
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| 219 | objects.append(def_file)
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| 220 |
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| 221 | #end: if ((export_symbols is not None) and
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| 222 | # (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")):
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| 223 |
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| 224 | # who wants symbols and a many times larger output file
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| 225 | # should explicitly switch the debug mode on
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| 226 | # otherwise we let dllwrap/ld strip the output file
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| 227 | # (On my machine: 10KB < stripped_file < ??100KB
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| 228 | # unstripped_file = stripped_file + XXX KB
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| 229 | # ( XXX=254 for a typical python extension))
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| 230 | if not debug:
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| 231 | extra_preargs.append("-s")
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| 232 |
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| 233 | UnixCCompiler.link(self,
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| 234 | target_desc,
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| 235 | objects,
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| 236 | output_filename,
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| 237 | output_dir,
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| 238 | libraries,
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| 239 | library_dirs,
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| 240 | runtime_library_dirs,
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| 241 | None, # export_symbols, we do this in our def-file
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| 242 | debug,
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| 243 | extra_preargs,
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| 244 | extra_postargs,
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| 245 | build_temp,
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| 246 | target_lang)
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| 247 |
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| 248 | # link ()
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| 249 |
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| 250 | # -- Miscellaneous methods -----------------------------------------
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| 251 |
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| 252 | # overwrite the one from CCompiler to support rc and res-files
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| 253 | def object_filenames (self,
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| 254 | source_filenames,
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| 255 | strip_dir=0,
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| 256 | output_dir=''):
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| 257 | if output_dir is None: output_dir = ''
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| 258 | obj_names = []
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| 259 | for src_name in source_filenames:
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| 260 | # use normcase to make sure '.rc' is really '.rc' and not '.RC'
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| 261 | (base, ext) = os.path.splitext (os.path.normcase(src_name))
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| 262 | if ext not in (self.src_extensions + ['.rc','.res']):
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| 263 | raise UnknownFileError, \
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| 264 | "unknown file type '%s' (from '%s')" % \
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| 265 | (ext, src_name)
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| 266 | if strip_dir:
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| 267 | base = os.path.basename (base)
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| 268 | if ext == '.res' or ext == '.rc':
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| 269 | # these need to be compiled to object files
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| 270 | obj_names.append (os.path.join (output_dir,
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| 271 | base + ext + self.obj_extension))
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| 272 | else:
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| 273 | obj_names.append (os.path.join (output_dir,
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| 274 | base + self.obj_extension))
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| 275 | return obj_names
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| 276 |
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| 277 | # object_filenames ()
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| 278 |
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| 279 | # class CygwinCCompiler
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| 280 |
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| 281 |
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| 282 | # the same as cygwin plus some additional parameters
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| 283 | class Mingw32CCompiler (CygwinCCompiler):
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| 284 |
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| 285 | compiler_type = 'mingw32'
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| 286 |
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| 287 | def __init__ (self,
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| 288 | verbose=0,
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| 289 | dry_run=0,
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| 290 | force=0):
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| 291 |
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| 292 | CygwinCCompiler.__init__ (self, verbose, dry_run, force)
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| 293 |
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| 294 | # ld_version >= "2.13" support -shared so use it instead of
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| 295 | # -mdll -static
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| 296 | if self.ld_version >= "2.13":
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| 297 | shared_option = "-shared"
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| 298 | else:
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| 299 | shared_option = "-mdll -static"
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| 300 |
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| 301 | # A real mingw32 doesn't need to specify a different entry point,
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| 302 | # but cygwin 2.91.57 in no-cygwin-mode needs it.
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| 303 | if self.gcc_version <= "2.91.57":
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| 304 | entry_point = '--entry _DllMain@12'
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| 305 | else:
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| 306 | entry_point = ''
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| 307 |
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| 308 | self.set_executables(compiler='gcc -mno-cygwin -O -Wall',
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| 309 | compiler_so='gcc -mno-cygwin -mdll -O -Wall',
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| 310 | compiler_cxx='g++ -mno-cygwin -O -Wall',
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| 311 | linker_exe='gcc -mno-cygwin',
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| 312 | linker_so='%s -mno-cygwin %s %s'
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| 313 | % (self.linker_dll, shared_option,
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| 314 | entry_point))
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| 315 | # Maybe we should also append -mthreads, but then the finished
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| 316 | # dlls need another dll (mingwm10.dll see Mingw32 docs)
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| 317 | # (-mthreads: Support thread-safe exception handling on `Mingw32')
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| 318 |
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| 319 | # no additional libraries needed
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| 320 | self.dll_libraries=[]
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| 321 |
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| 322 | # Include the appropriate MSVC runtime library if Python was built
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| 323 | # with MSVC 7.0 or 7.1.
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| 324 | msc_pos = sys.version.find('MSC v.')
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| 325 | if msc_pos != -1:
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| 326 | msc_ver = sys.version[msc_pos+6:msc_pos+10]
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| 327 | if msc_ver == '1300':
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| 328 | # MSVC 7.0
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| 329 | self.dll_libraries = ['msvcr70']
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| 330 | elif msc_ver == '1310':
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| 331 | # MSVC 7.1
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| 332 | self.dll_libraries = ['msvcr71']
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| 333 |
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| 334 | # __init__ ()
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| 335 |
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| 336 | # class Mingw32CCompiler
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| 337 |
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| 338 | # Because these compilers aren't configured in Python's pyconfig.h file by
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| 339 | # default, we should at least warn the user if he is using a unmodified
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| 340 | # version.
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| 341 |
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| 342 | CONFIG_H_OK = "ok"
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| 343 | CONFIG_H_NOTOK = "not ok"
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| 344 | CONFIG_H_UNCERTAIN = "uncertain"
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| 345 |
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| 346 | def check_config_h():
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| 347 |
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| 348 | """Check if the current Python installation (specifically, pyconfig.h)
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| 349 | appears amenable to building extensions with GCC. Returns a tuple
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| 350 | (status, details), where 'status' is one of the following constants:
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| 351 | CONFIG_H_OK
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| 352 | all is well, go ahead and compile
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| 353 | CONFIG_H_NOTOK
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| 354 | doesn't look good
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| 355 | CONFIG_H_UNCERTAIN
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| 356 | not sure -- unable to read pyconfig.h
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| 357 | 'details' is a human-readable string explaining the situation.
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| 358 |
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| 359 | Note there are two ways to conclude "OK": either 'sys.version' contains
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| 360 | the string "GCC" (implying that this Python was built with GCC), or the
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| 361 | installed "pyconfig.h" contains the string "__GNUC__".
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| 362 | """
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| 363 |
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| 364 | # XXX since this function also checks sys.version, it's not strictly a
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| 365 | # "pyconfig.h" check -- should probably be renamed...
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| 366 |
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| 367 | from distutils import sysconfig
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| 368 | import string
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| 369 | # if sys.version contains GCC then python was compiled with
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| 370 | # GCC, and the pyconfig.h file should be OK
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| 371 | if string.find(sys.version,"GCC") >= 0:
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| 372 | return (CONFIG_H_OK, "sys.version mentions 'GCC'")
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| 373 |
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| 374 | fn = sysconfig.get_config_h_filename()
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| 375 | try:
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| 376 | # It would probably better to read single lines to search.
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| 377 | # But we do this only once, and it is fast enough
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| 378 | f = open(fn)
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| 379 | s = f.read()
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| 380 | f.close()
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| 381 |
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| 382 | except IOError, exc:
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| 383 | # if we can't read this file, we cannot say it is wrong
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| 384 | # the compiler will complain later about this file as missing
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| 385 | return (CONFIG_H_UNCERTAIN,
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| 386 | "couldn't read '%s': %s" % (fn, exc.strerror))
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| 387 |
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| 388 | else:
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| 389 | # "pyconfig.h" contains an "#ifdef __GNUC__" or something similar
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| 390 | if string.find(s,"__GNUC__") >= 0:
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| 391 | return (CONFIG_H_OK, "'%s' mentions '__GNUC__'" % fn)
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| 392 | else:
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| 393 | return (CONFIG_H_NOTOK, "'%s' does not mention '__GNUC__'" % fn)
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| 394 |
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| 395 |
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| 396 |
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| 397 | def get_versions():
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| 398 | """ Try to find out the versions of gcc, ld and dllwrap.
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| 399 | If not possible it returns None for it.
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| 400 | """
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| 401 | from distutils.version import StrictVersion
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| 402 | from distutils.spawn import find_executable
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| 403 | import re
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| 404 |
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| 405 | gcc_exe = find_executable('gcc')
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| 406 | if gcc_exe:
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| 407 | out = os.popen(gcc_exe + ' -dumpversion','r')
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| 408 | out_string = out.read()
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| 409 | out.close()
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| 410 | result = re.search('(\d+\.\d+(\.\d+)*)',out_string)
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| 411 | if result:
|
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| 412 | gcc_version = StrictVersion(result.group(1))
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| 413 | else:
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| 414 | gcc_version = None
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| 415 | else:
|
|---|
| 416 | gcc_version = None
|
|---|
| 417 | ld_exe = find_executable('ld')
|
|---|
| 418 | if ld_exe:
|
|---|
| 419 | out = os.popen(ld_exe + ' -v','r')
|
|---|
| 420 | out_string = out.read()
|
|---|
| 421 | out.close()
|
|---|
| 422 | result = re.search('(\d+\.\d+(\.\d+)*)',out_string)
|
|---|
| 423 | if result:
|
|---|
| 424 | ld_version = StrictVersion(result.group(1))
|
|---|
| 425 | else:
|
|---|
| 426 | ld_version = None
|
|---|
| 427 | else:
|
|---|
| 428 | ld_version = None
|
|---|
| 429 | dllwrap_exe = find_executable('dllwrap')
|
|---|
| 430 | if dllwrap_exe:
|
|---|
| 431 | out = os.popen(dllwrap_exe + ' --version','r')
|
|---|
| 432 | out_string = out.read()
|
|---|
| 433 | out.close()
|
|---|
| 434 | result = re.search(' (\d+\.\d+(\.\d+)*)',out_string)
|
|---|
| 435 | if result:
|
|---|
| 436 | dllwrap_version = StrictVersion(result.group(1))
|
|---|
| 437 | else:
|
|---|
| 438 | dllwrap_version = None
|
|---|
| 439 | else:
|
|---|
| 440 | dllwrap_version = None
|
|---|
| 441 | return (gcc_version, ld_version, dllwrap_version)
|
|---|
