msys_link_VC_2008_dlls.py

#!/usr/bin/env python
# -*- coding: ascii -*-
# Program msys_link_VC_2008_dlls.py
# Requires Python 2.4 or later and win32api.

"""Link dependency DLLs against the Visual C 2008 run-time using MinGW and MSYS

Configured for Pygame 1.8 and Python 2.6 and up.

By default the DLLs and export libraries are installed in directory ./lib_VC_2008.
msys_build_deps.py must run first to build the static libaries.

This program can be run from a Windows cmd.exe or MSYS terminal.

The recognized, and optional, environment variables are:
  SHELL - MSYS shell program path - already defined in the MSYS terminal
  LDFLAGS - linker options - prepended to flags set by the program
  LIBRARY_PATH - library directory paths - appended to those used by this
                 program

To get a list of command line options run

python build_deps.py --help

This program has been tested against the following libraries:

SDL 1.2.14 
SDL_image 1.2.10
SDL_mixer 1.2.11
SDL_ttf 2.0.9
#disabled for now since crashes (smpeg revision 389 from SVN)
freetype 2.3.12
libogg 1.2.0
libvorbis 1.3.1
FLAC 1.2.1
tiff 3.9.4
libpng 1.4.3
jpeg 8b
zlib 1.2.5
PortMidi revision 201 from SVN (patched)

The build environment used:

gcc-core-4.5.0-1-mingw32
gcc-c++-4.5.0-1-mingw32
binutils-2.20.1-2-mingw32
mingwrt-3.18-mingw32
pexports 0.44
MSYS 1.0.13

Builds have been performed on Windows XP.

Build issues:
  For pre-2007 computers:  MSYS bug "[ 1170716 ] executing a shell scripts
    gives a memory leak" (http://sourceforge.net/tracker/
    index.php?func=detail&aid=1170716&group_id=2435&atid=102435)
    
    It may not be possible to use the --all option to build all Pygame
    dependencies in one session. Instead the job may need to be split into two
    or more sessions, with a reboot of the operatingsystem between each. Use
    the --help-args option to list the libraries in the their proper build
    order.
"""

import msys

from optparse import OptionParser, Option, OptionValueError
import os
import sys
import time
import re
import copy

# For Python 2.x/3.x compatibility
def geterror():
    return sys.exc_info()[1]

DEFAULT_DEST_DIR_NAME = 'lib_VC_2008'
default_source_mp = '/usr/local'

def print_(*args, **kwds):
    msys.msys_print(*args, **kwds)

def merge_strings(*args, **kwds):
    """Returns non empty string joined by sep

    The default separator is an empty string.
    """

    sep = kwds.get('sep', '')
    return sep.join([s for s in args if s])

class BuildError(Exception):
    """Raised for missing source paths and failed script runs"""
    pass

class Dependency(object):
    """Builds a library"""
    
    def __init__(self, name, dlls, shell_script):
        self.name = name
        self.dlls = dlls
        self.shell_script = shell_script

    def build(self, msys):
        return_code = msys.run_shell_script(self.shell_script)
        if return_code != 0:
            raise BuildError("The build for %s failed with code %d" %
                             (self.name, return_code))

class Preparation(object):
    """Perform necessary build environment preperations"""
    
    def __init__(self, name, shell_script):
        self.name = name
        self.path = ''
        self.paths = []
        self.dlls = []
        self.shell_script = shell_script

    def build(self, msys):
        return_code = msys.run_shell_script(self.shell_script)
        if return_code != 0:
            raise BuildError("Preparation '%s' failed with code %d" %
                             (self.name, return_code))

def build(dependencies, msys):
    """Execute that shell scripts for all dependencies"""
    
    for dep in dependencies:
        dep.build(msys)

def check_directory_path(option, opt, value):
    # Remove those double quotes that Windows won't.
    if re.match(r'([A-Za-z]:){0,1}[^"<>:|?*]+$', value) is None:
        raise OptionValueError("option %s: invalid path" % value)
    return value

class MyOption(Option):
    TYPES = Option.TYPES + ("dir",)
    TYPE_CHECKER = copy.copy(Option.TYPE_CHECKER)
    TYPE_CHECKER["dir"] = check_directory_path

def command_line():
    """Process the command line and return the options"""
    
    usage = ("usage: %prog [options] --all\n"
             "       %prog [options] [args]\n"
             "\n"
             "Build the Pygame dependencies. The args, if given, are\n"
             "libraries to include or exclude.\n"
             "\n"
             "At startup this program may prompt for missing information.\n"
             "Be aware of this before redirecting output or leaving the\n"
             "program unattended. Once the 'Starting build' message appears\n"
             "no more user input is required. The build process will"
             "abort on the first error, as library build order is important.\n"
             "\n"
             "See --include and --help-args.\n"
             "\n"
             "For more details see the program's document string\n")
    
    parser = OptionParser(usage, option_class=MyOption)
    parser.add_option('-a', '--all', action='store_true', dest='build_all',
                      help="Include all libraries in the build")
    parser.set_defaults(build_all=False)
    parser.add_option('--console', action='store_true', dest='console',
                      help="Link with the console subsystem:"
                           " defaults to Win32 GUI")
    parser.set_defaults(console=False)
    parser.add_option('--no-strip', action='store_false', dest='strip',
                      help="Do not strip the library")
    parser.set_defaults(strip=True)
    parser.add_option('-e', '--exclude', action='store_true', dest='exclude',
                      help="Exclude the specified libraries")
    parser.set_defaults(exclude=False)
    parser.add_option('-d', '--destination-dir', type='dir',
                      dest='destination_dir',
                      help="Where the DLLs and export libraries will go",
                      metavar='PATH')
    parser.set_defaults(destination_dir=DEFAULT_DEST_DIR_NAME)
    parser.add_option('-m', '--msys-root', action='store', type='dir',
                      dest='msys_directory',
                      help="MSYS directory path, which may include"
                           " the 1.x subdirectory")
    parser.add_option('-s', '--source', action='store',
                      dest='source_directory',
                      help="Directory where the DLLs and headers are installed:\n"
                           "(defaults to MSYS %s)"
                           % (default_source_mp,))
    parser.set_defaults(source_directory='')
    parser.add_option('--help-args', action='store_true', dest='arg_help',
                      help="Show a list of recognised libraries,"
                           " in build order, and exit")
    parser.set_defaults(arg_help=False)
    return parser.parse_args()

def set_environment_variables(msys, options):
    """Set the environment variables used by the scripts"""
    
    environ = msys.environ
    msys_root_wp = msys.msys_root
    destination_dir_wp = os.path.abspath(options.destination_dir)
    environ['BDWD'] = msys.windows_to_msys(destination_dir_wp)
    source_mp = default_source_mp
    if options.source_directory:
        source_mp = msys.windows_to_msys(options.source_directory)
    environ['BDBIN'] = source_mp + '/bin'
    environ['BDLIB'] = source_mp + '/lib'
    strip = ''
    if options.strip:
        strip = '-Wl,--strip-all'
    environ['LDFLAGS'] = merge_strings(strip, environ.get('LDFLAGS', ''),
                                       sep=' ')
    msvcr90_wp = os.path.join(destination_dir_wp, 'msvcr90')
    environ['DBMSVCR90'] = msys.windows_to_msys(msvcr90_wp)
    # For dependency libraries and msvcrt hiding.
    environ['LIBRARY_PATH'] = merge_strings(msvcr90_wp,
                                            environ.get('LIBRARY_PATH', ''),
                                            sep=';')

class ChooseError(Exception):
    """Failer to select dependencies"""
    pass

def choose_dependencies(dependencies, options, args):
    """Return the dependencies to actually build"""

    if options.build_all:
        if args:
            raise ChooseError("No library names are accepted"
                              " for the --all option.")
        if options.exclude:
            return []
        else:
            return dependencies

    if args:
        names = [d.name for d in dependencies]
        args = [a.upper() for a in args]
        for a in args:
            if a not in names:
                msg = ["%s is an unknown library; valid choices are:" % a]
                msg.extend(names)
                raise ChooseError('\n'.join(msg))
        if options.exclude:
            return [d for d in dependencies if d.name not in args]
        return [d for d in dependencies if d.name in args]

    return []
    
def summary(dependencies, msys, start_time, chosen_deps, options):
    """Display a summary report of new, existing and missing DLLs"""

    import datetime

    print_("\n\n=== Summary ===")
    if start_time is not None:
        print_("  Elapse time:",
               datetime.timedelta(seconds=time.time()-start_time))
    bin_dir = options.destination_dir
    for d in dependencies:
        name = d.name
        dlls = d.dlls
        for dll in dlls:
            dll_path = os.path.join(bin_dir, dll)
            try:
                mod_time = os.path.getmtime(dll_path)
            except:
                msg = "No DLL"
            else:
                if mod_time >= start_time:
                    msg = "Installed new DLL %s" % dll_path
                else:
                    msg = "-- (old DLL %s)" % dll_path
            print_("  %-10s: %s" % (name, msg))
    
def main(dependencies, msvcr90_preparation, msys_preparation):
    """Build the dependencies according to the command line options."""

    options, args = command_line()
    if options.arg_help:
        print_("These are the Pygame library dependencies:")
        for dep in dependencies:
            print_(" ", dep.name)
        return 0
    try:
        chosen_deps = choose_dependencies(dependencies, options, args)
    except ChooseError:
        print_(geterror())
        return 1
    print_("Destination directory:", options.destination_dir)
    if not chosen_deps:
        if not args:
            print_("No libraries specified.")
        elif options.build_all:
            print_("All libraries excluded")
    chosen_deps.insert(0, msvcr90_preparation)
    chosen_deps.insert(0, msys_preparation)
    try:
        msys_directory = options.msys_directory
    except AttributeError:
        msys_directory = None
    try:
        m = msys.Msys(msys_directory)
    except msys.MsysException:
        print_(geterror())
        return 1
    start_time = None
    return_code = 1
    set_environment_variables(m, options)
    print_("\n=== Starting build ===")
    start_time = time.time()  # For file timestamp checks.
    try:
        build(chosen_deps, m)
    except BuildError:
        print_("Build aborted:", geterror())
    else:
        # A successful build!
        return_code = 0
    summary(dependencies, m, start_time, chosen_deps, options)

    return return_code

#
#   Build specific code
#

# This list includes the MSYS shell scripts to build each library. Each script
# runs in an environment where MINGW_ROOT_DIRECTORY is defined and the MinGW
# bin directory is in PATH. DBWD, is the working directory. A script will cd to
# it before doing anything else. BDBIN is the location of the dependency DLLs.
# BDLIB is the location of the dependency libraries. LDFLAGS are linker flags.
# 
# The list order corresponds to build order. It is critical.
dependencies = [
    Dependency('SDL', ['SDL.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/SDL.dll" >SDL.def
gcc -shared $LDFLAGS -mwindows -def SDL.def "$BDLIB/libSDL.a" -lwinmm -ldxguid -lgdi32 -o SDL.dll
dlltool -D SDL.dll -d SDL.def -l libSDL.dll.a
ranlib libSDL.dll.a
#strip --strip-all SDL.dll
"""),
    Dependency('Z', ['zlib1.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/zlib1.dll" >z.def
gcc -shared $LDFLAGS -def z.def "$BDLIB/libz.a" -mwindows -o zlib1.dll 
dlltool -D zlib1.dll -d z.def -l libz.dll.a
ranlib libz.dll.a
#strip --strip-all zlib1.dll
"""),
    Dependency('FREETYPE', ['libfreetype-6.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/libfreetype-6.dll" >freetype.def
gcc -shared $LDFLAGS -L. -def freetype.def \
  "$BDLIB/libfreetype.a" -mwindows -lz -o libfreetype-6.dll
dlltool -D libfreetype-6.dll -d freetype.def -l libfreetype.dll.a
ranlib libfreetype.dll.a
#strip --strip-all libfreetype-6.dll
"""),
    Dependency('FONT', ['SDL_ttf.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/SDL_ttf.dll" >SDL_ttf.def
gcc -shared $LDFLAGS -L. "-L$BDLIB" -def SDL_ttf.def \
  "$BDLIB/libSDL_ttf.a" -mwindows -lSDL -lfreetype -o SDL_ttf.dll
dlltool -D SDL_ttf.dll -d SDL_ttf.def -l libSDL_ttf.dll.a
ranlib libSDL_ttf.dll.a
#strip --strip-all SDL_ttf.dll
"""),
    Dependency('PNG', ['libpng14.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/libpng14.dll" >png.def
gcc -shared $LDFLAGS -L. -def png.def "$BDLIB/libpng.a" -mwindows -lz -o libpng14.dll
dlltool -D libpng14.dll -d png.def -l libpng.dll.a
ranlib libpng.dll.a
#strip --strip-all libpng14.dll
"""),
    Dependency('JPEG', ['libjpeg-8.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/libjpeg-8.dll" >jpeg.def
gcc -shared $LDFLAGS -def jpeg.def "$BDLIB/libjpeg.a" -mwindows -o libjpeg-8.dll
dlltool -D libjpeg-8.dll -d jpeg.def -l libjpeg.dll.a
ranlib libjpeg.dll.a
#strip --strip-all libjpeg-8.dll
"""),
    Dependency('TIFF', ['libtiff-3.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/libtiff-3.dll" | sed '/libport_dummy_function/d' >tiff.def
gcc -shared $LDFLAGS -L. -def tiff.def \
  "$BDLIB/libtiff.a" -mwindows -ljpeg -lz -o libtiff-3.dll
dlltool -D libtiff-3.dll -d tiff.def -l libtiff.dll.a
ranlib libtiff.dll.a
strip --strip-all libtiff-3.dll
"""),
    Dependency('IMAGE', ['SDL_image.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/SDL_image.dll" >SDL_image.def
gcc -shared $LDFLAGS -L. -def SDL_image.def \
  "$BDLIB/libSDL_image.a" -mwindows -lSDL -ljpeg -lpng -ltiff -o SDL_image.dll
dlltool -D SDL_image.dll -d SDL_image.def -l libSDL_image.dll.a
ranlib libSDL_image.dll.a
#strip --strip-all SDL_image.dll
"""),
    Dependency('SMPEG', ['smpeg.dll'], """

set -e
cd "$BDWD"

dlltool --export-all-symbols -z smpeg.def "$BDLIB/libsmpeg.a"
g++ -shared $LDFLAGS -static-libstdc++ -static-libgcc -L. -def smpeg.def \
  -Wl,--enable-auto-import,--out-implib,libsmpeg.dll.a \
  "$BDLIB/libsmpeg.a" -mwindows -lSDL -o smpeg.dll
ranlib libsmpeg.dll.a
#strip --strip-all smpeg.dll
"""),
    Dependency('OGG', ['libogg-0.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/libogg-0.dll" >ogg.def
gcc -shared $LDFLAGS -def ogg.def "$BDLIB/libogg.a" -mwindows -o libogg-0.dll
dlltool -D libogg-0.dll -d ogg.def -l libogg.dll.a
ranlib libogg.dll.a
#strip --strip-all libogg-0.dll
"""),
    Dependency('VORBIS', ['libvorbis-0.dll', 'libvorbisfile-3.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/libvorbis-0.dll" >vorbis.def
gcc -shared $LDFLAGS -L. -def vorbis.def \
  "$BDLIB/libvorbis.a" -mwindows -logg -o libvorbis-0.dll
dlltool -D libvorbis-0.dll -d vorbis.def -l libvorbis.dll.a
ranlib libvorbis.dll.a
#strip --strip-all libvorbis-0.dll

pexports "$BDBIN/libvorbisfile-3.dll" >vorbisfile.def
gcc -shared $LDFLAGS -L. -def vorbisfile.def \
  "$BDLIB/libvorbisfile.a" -mwindows -lvorbis -logg -o libvorbisfile-3.dll
dlltool -D libvorbisfile-3.dll -d vorbisfile.def -l libvorbisfile.dll.a
ranlib libvorbisfile.dll.a
#strip --strip-all libvorbisfile-3.dll
"""),
    Dependency('MIXER', ['SDL_mixer.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/SDL_mixer.dll" >SDL_mixer.def
gcc -shared -static-libgcc $LDFLAGS -L. -L"$BDLIB" -def SDL_mixer.def \
  "$BDLIB/libSDL_mixer.a" -mwindows -lSDL -lsmpeg -lvorbisfile -lFLAC -lmikmod -lWs2_32 -lwinmm -o SDL_mixer.dll
dlltool -D SDL_mixer.dll -d SDL_mixer.def -l libSDL_mixer.dll.a
ranlib libSDL_mixer.dll.a
#strip --strip-all SDL_mixer.dll
"""),
    Dependency('PORTMIDI', ['portmidi.dll'], """

set -e
cd "$BDWD"

pexports "$BDBIN/portmidi.dll" >portmidi.def
g++ -shared -static-libgcc $LDFLAGS -L. -L/usr/local/lib -def portmidi.def \
  "$BDLIB/libportmidi.a" -mwindows -lwinmm -o portmidi.dll
dlltool -D portmidi.dll -d portmidi.def -l portmidi.dll.a
ranlib libSDL_mixer.dll.a
#strip --strip-all portmidi.dll
"""),
    Dependency('FFMPEG', ['avformat-52.dll', 'swscale-0.dll',
                          'avcodec-52.dll', 'avutil-50.dll' ], """

set -e
cd "$BDWD"

dlltool --export-all-symbols -z avutil.def "$BDLIB/libavutil.a"
gcc -shared -L. -L"$BDLIB" -def avutil.def $LDFLAGS \
  -Wl,-Bsymbolic,--as-needed,--out-implib,libavutil.dll.a \
  "$BDLIB/libavutil.a" -mwindows -o avutil-50.dll
ranlib libavutil.dll.a
#strip --strip-all avutil-50.dll

set -e
cd "$BDWD"

dlltool --export-all-symbols -z avcodec.def "$BDLIB/libavcodec.a"
gcc -shared -L. -L"$BDLIB" -def avcodec.def $LDFLAGS \
  -Wl,-Bsymbolic,--as-needed,--enable-auto-import,--out-implib,libavcodec.dll.a \
  "$BDLIB/libavcodec.a" -mwindows -lavutil -lz -o avcodec-52.dll
ranlib libavcodec.dll.a
#strip --strip-all avcodec-52.dll

set -e
cd "$BDWD"

dlltool --export-all-symbols -z avformat.def "$BDLIB/libavformat.a"
gcc -shared -L. -L"BDLIB" -def avformat.def $LDFLAGS \
  -Wl,-Bsymbolic,--as-needed,--enable-auto-import,--out-implib,libavformat.dll.a \
  "$BDLIB/libavformat.a" -mwindows -lavcodec -lavutil -lz -lWs2_32 -o avformat-52.dll
ranlib libavformat.dll.a
#strip --strip-all avformat-52.dll

set -e
cd "$BDWD"

dlltool --export-all-symbols -z swscale.def "$BDLIB/libswscale.a"
gcc -shared -L. -L"$BDLIB" -def swscale.def $LDFLAGS \
  -Wl,-Bsymbolic,--as-needed,--enable-auto-import,--out-implib,libswscale.dll.a \
  "$BDLIB/libswscale.a" -mwindows -lavutil -o swscale-0.dll
ranlib libswscale.dll.a
#strip --strip-all swscale-0.dll
"""),
    ]  # End dependencies = [.


msys_prep = Preparation('/usr/local', """

# Ensure destination directories exists.
mkdir -p "$BDWD"
mkdir -p "$DBMSVCR90"
""")
    
msvcr90_prep = Preparation('msvcr90.dll linkage', r"""

set -e

#
#   msvcr90.dll support
#
if [ ! -f "$DBMSVCR90/libmoldnamed.dll.a" ]; then
  OBJS='isascii.o iscsym.o iscsymf.o toascii.o
        strcasecmp.o strncasecmp.o wcscmpi.o'
  if [ ! -d /tmp/build_deps ]; then mkdir /tmp/build_deps; fi
  cd /tmp/build_deps

  # These definitions were generated with pexports on msvcr90.dll.
  # The C++ stuff at the beginning was removed. _onexit and atexit made
  # data entries.
  cat > msvcr90.def << 'THE_END'
EXPORTS
_CIacos
_CIasin
_CIatan
_CIatan2
_CIcos
_CIcosh
_CIexp
_CIfmod
_CIlog
_CIlog10
_CIpow
_CIsin
_CIsinh
_CIsqrt
_CItan
_CItanh
_CRT_RTC_INIT
_CRT_RTC_INITW
_CreateFrameInfo
_CxxThrowException
_EH_prolog
_FindAndUnlinkFrame
_Getdays
_Getmonths
_Gettnames
_HUGE DATA
_IsExceptionObjectToBeDestroyed
_NLG_Dispatch2
_NLG_Return
_NLG_Return2
_Strftime
_XcptFilter
__AdjustPointer
__BuildCatchObject
__BuildCatchObjectHelper
__CppXcptFilter
__CxxCallUnwindDelDtor
__CxxCallUnwindDtor
__CxxCallUnwindStdDelDtor
__CxxCallUnwindVecDtor
__CxxDetectRethrow
__CxxExceptionFilter
__CxxFrameHandler
__CxxFrameHandler2
__CxxFrameHandler3
__CxxLongjmpUnwind
__CxxQueryExceptionSize
__CxxRegisterExceptionObject
__CxxUnregisterExceptionObject
__DestructExceptionObject
__FrameUnwindFilter
__RTCastToVoid
__RTDynamicCast
__RTtypeid
__STRINGTOLD
__STRINGTOLD_L
__TypeMatch
___fls_getvalue@4
___fls_setvalue@8
___lc_codepage_func
___lc_collate_cp_func
___lc_handle_func
___mb_cur_max_func
___mb_cur_max_l_func
___setlc_active_func
___unguarded_readlc_active_add_func
__argc DATA
__argv DATA
__badioinfo DATA
__clean_type_info_names_internal
__control87_2
__create_locale
__crtCompareStringA
__crtCompareStringW
__crtGetLocaleInfoW
__crtGetStringTypeW
__crtLCMapStringA
__crtLCMapStringW
__daylight
__dllonexit
__doserrno
__dstbias
__fpecode
__free_locale
__get_app_type
__get_current_locale
__get_flsindex
__get_tlsindex
__getmainargs
__initenv DATA
__iob_func
__isascii
__iscsym
__iscsymf
__iswcsym
__iswcsymf
__lc_clike DATA
__lc_codepage DATA
__lc_collate_cp DATA
__lc_handle DATA
__lconv DATA
__lconv_init
__libm_sse2_acos
__libm_sse2_acosf
__libm_sse2_asin
__libm_sse2_asinf
__libm_sse2_atan
__libm_sse2_atan2
__libm_sse2_atanf
__libm_sse2_cos
__libm_sse2_cosf
__libm_sse2_exp
__libm_sse2_expf
__libm_sse2_log
__libm_sse2_log10
__libm_sse2_log10f
__libm_sse2_logf
__libm_sse2_pow
__libm_sse2_powf
__libm_sse2_sin
__libm_sse2_sinf
__libm_sse2_tan
__libm_sse2_tanf
__mb_cur_max DATA
__p___argc
__p___argv
__p___initenv
__p___mb_cur_max
__p___wargv
__p___winitenv
__p__acmdln
__p__amblksiz
__p__commode
__p__daylight
__p__dstbias
__p__environ
__p__fmode
__p__iob
__p__mbcasemap
__p__mbctype
__p__pctype
__p__pgmptr
__p__pwctype
__p__timezone
__p__tzname
__p__wcmdln
__p__wenviron
__p__wpgmptr
__pctype_func
__pioinfo DATA
__pwctype_func
__pxcptinfoptrs
__report_gsfailure
__set_app_type
__set_flsgetvalue
__setlc_active DATA
__setusermatherr
__strncnt
__swprintf_l
__sys_errlist
__sys_nerr
__threadhandle
__threadid
__timezone
__toascii
__tzname
__unDName
__unDNameEx
__unDNameHelper
__uncaught_exception
__unguarded_readlc_active DATA
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signal
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tan
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tmpfile
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tolower
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wcstoul
wcsxfrm
wctob
wctomb
wctomb_s
wprintf
wprintf_s
wscanf
wscanf_s
THE_END

  # Provide the gmtime stub required by PNG.
  cat > gmtime.c << 'THE_END'
/* Stub function for gmtime.
 * This is an inline function in Visual C 2008 so is missing from msvcr90.dll
 */
#include <time.h>

struct tm* _gmtime32(const time_t *timer);

struct tm* gmtime(const time_t *timer)
{
    return _gmtime32(timer);                                    
}
THE_END

  # Provide the mktime stub required by ffmpeg/avformat/utils.c.
  cat > mktime.c << 'THE_END'
/* Stub function for mktime.
 * This is an inline function in Visual C 2008 so is missing from msvcr90.dll
 */
#include <time.h>

time_t _mktime32(struct tm *timeptr);

time_t mktime(struct tm *timeptr)
{
    return _mktime32(timeptr);                                    
}
THE_END

  # Provide the localtime stub required by ffmpeg/avformat/utils.c.
  cat > localtime.c << 'THE_END'
/* Stub function for localtime.
 * This is an inline function in Visual C 2008 so is missing from msvcr90.dll
 */
#include <time.h>

struct tm *_localtime32(const time_t *timer);

struct tm *localtime(const time_t *timer)
{
    return _localtime32(timer);                                    
}
THE_END

  # Provide the _fstati64 stub required by ffmpeg/libavformat/file.c.
  cat > _fstati64.c << 'THE_END'
/* Stub function for _fstati64.
 * This is an alias in Visual C 2008 but has a fixed definition in MinGW
 */
#include <sys/stat.h>

int _fstat32i64(int fd, struct _stati64 *buffer);

int _fstati64(int fd, struct _stati64 *buffer)
{
    return _fstat32i64(fd, buffer);                                    
}
THE_END

  # Provide the time stub required by libavformat.
  cat > time.c << 'THE_END'
/* Stub function for time.
 * This is an inline function in Visual C 2008 so is missing from msvcr90.dll
 */
#include <time.h>

time_t _time32(time_t *timer);

time_t time(time_t *timer)
{
    return _time32(timer);                                    
}
THE_END


  gcc -c -O2 gmtime.c mktime.c localtime.c _fstati64.c time.c
  dlltool -d msvcr90.def -D msvcr90.dll -l libmsvcr90.dll.a
  ar rc libmsvcr90.dll.a gmtime.o mktime.o localtime.o _fstati64.o time.o
  ranlib libmsvcr90.dll.a
  cp -f libmsvcr90.dll.a "$DBMSVCR90"
  mv -f libmsvcr90.dll.a "$DBMSVCR90/libmsvcrt.dll.a"
  gcc -c -g gmtime.c mktime.c localtime.c _fstati64.c time.c
  dlltool -d msvcr90.def -D msvcr90d.dll -l libmsvcr90d.dll.a
  ar rc libmsvcr90d.dll.a gmtime.o mktime.o localtime.o _fstati64.o time.o
  ranlib libmsvcr90d.dll.a
  cp -f libmsvcr90d.dll.a "$DBMSVCR90"
  mv -f libmsvcr90d.dll.a "$DBMSVCR90/libmsvcrtd.dll.a"
  
  # These definitions are taken from mingw-runtime-3.12 .
  # The file was generated with the following command:
  #
  # gcc -DRUNTIME=msvcrt -D__FILENAME__=moldname-msvcrt.def
  #   -D__MSVCRT__ -C -E -P -xc-header moldname.def.in >moldname-msvcrt.def
  # It then had fstat deleted to match with msvcr90.dll.
  cat > moldname-msvcrt.def << 'THE_END'
EXPORTS
access
chdir
chmod
chsize
close
creat
cwait

daylight DATA

dup
dup2
ecvt
eof
execl
execle
execlp
execlpe
execv
execve
execvp
execvpe
fcvt
fdopen
fgetchar
fgetwchar
filelength
fileno
; Alias fpreset is set in CRT_fp10,c and CRT_fp8.c.
; fpreset
fputchar
fputwchar
ftime
gcvt
getch
getche
getcwd
getpid
getw
heapwalk
isatty
itoa
kbhit
lfind
lsearch
lseek
ltoa
memccpy
memicmp
mkdir
mktemp
open
pclose
popen
putch
putenv
putw
read
rmdir
rmtmp
searchenv
setmode
sopen
spawnl
spawnle
spawnlp
spawnlpe
spawnv
spawnve
spawnvp
spawnvpe
stat
strcmpi
strdup
stricmp
stricoll
strlwr
strnicmp
strnset
strrev
strset
strupr
swab
tell
tempnam

timezone DATA

; export tzname for both. See <time.h>
tzname DATA
tzset
umask
ungetch
unlink
utime
wcsdup
wcsicmp
wcsicoll
wcslwr
wcsnicmp
wcsnset
wcsrev
wcsset
wcsupr

wpopen

write
; non-ANSI functions declared in math.h
j0
j1
jn
y0
y1
yn
chgsign
scalb
finite
fpclass
; C99 functions
cabs
hypot
logb
nextafter
THE_END

  # Provide the fstat stub required by TIFF.
  cat > fstat.c << 'THE_END'
/* Stub function for fstat.
 * This is an inlined function in Visual C 2008 so is missing from msvcr90.dll
 */
#include <sys/stat.h>

int _fstat32(int fd, struct stat *buffer);

int fstat(int fd, struct stat *buffer)
{
    return _fstat32(fd, buffer);
}
THE_END

  # Provide the _winmajor constant required by libmingw32.a.
  cat > _winver.c << 'THE_END'
/* Windows Version constants.
 * Set to version 5.0 as msvcr90.dll cannot be used on any version before
 * Windows 2000.
*/
  /* Explicitly declare the pointers for linkage with dllimport */
  static unsigned int _winmajor = 5;
  static unsigned int _winminor = 0;
  static unsigned int _winver = 0x0500;
  unsigned int *_imp___winmajor = &_winmajor;
  unsigned int *_imp___winminor = &_winminor;
  unsigned int *_imp___winver = &_winver;
THE_END

  mkdir -p "$DBMSVCR90"
  gcc -c -O2 fstat.c _winver.c
  ar x /mingw/lib/libmoldname90.a $OBJS
  dlltool --as as -k -U \
     --dllname msvcr90.dll \
     --def moldname-msvcrt.def \
     --output-lib libmoldname.dll.a
  ar rc libmoldname.dll.a $OBJS fstat.o _winver.o
  ranlib libmoldname.dll.a
  mv -f libmoldname.dll.a "$DBMSVCR90"
  gcc -c -g fstat.c _winver.c
  ar x /mingw/lib/libmoldname90d.a $OBJS
  dlltool --as as -k -U \
     --dllname msvcr90.dll \
     --def moldname-msvcrt.def \
     --output-lib libmoldnamed.dll.a
  ar rc libmoldnamed.dll.a $OBJS fstat.o _winver.o
  ranlib libmoldnamed.dll.a
  mv -f libmoldnamed.dll.a "$DBMSVCR90"
  rm -f ./*
  cd "$OLDPWD"
  rmdir /tmp/build_deps
fi
""")

if __name__ == '__main__':
    sys.exit(main(dependencies, msvcr90_prep, msys_prep))