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Member "mesa-20.1.8/scons/crossmingw.py" (16 Sep 2020, 6546 Bytes) of package /linux/misc/mesa-20.1.8.tar.xz:


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    1 """SCons.Tool.gcc
    2 
    3 Tool-specific initialization for MinGW (http://www.mingw.org/)
    4 
    5 There normally shouldn't be any need to import this module directly.
    6 It will usually be imported through the generic SCons.Tool.Tool()
    7 selection method.
    8 
    9 See also http://www.scons.org/wiki/CrossCompilingMingw
   10 """
   11 
   12 #
   13 # Copyright (c) 2001, 2002, 2003, 2004 The SCons Foundation
   14 #
   15 # Permission is hereby granted, free of charge, to any person obtaining
   16 # a copy of this software and associated documentation files (the
   17 # "Software"), to deal in the Software without restriction, including
   18 # without limitation the rights to use, copy, modify, merge, publish,
   19 # distribute, sublicense, and/or sell copies of the Software, and to
   20 # permit persons to whom the Software is furnished to do so, subject to
   21 # the following conditions:
   22 #
   23 # The above copyright notice and this permission notice shall be included
   24 # in all copies or substantial portions of the Software.
   25 #
   26 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
   27 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
   28 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   29 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
   30 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   31 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   32 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   33 #
   34 
   35 import os
   36 import os.path
   37 import string
   38 
   39 import SCons.Action
   40 import SCons.Builder
   41 import SCons.Tool
   42 import SCons.Util
   43 
   44 # These are the mingw toolchain prefixes we search for:
   45 # (We only search for the mingw-w64 toolchain, and not the mingw.org one.)
   46 prefixes32 = SCons.Util.Split("""
   47     i686-w64-mingw32-
   48 """)
   49 prefixes64 = SCons.Util.Split("""
   50     x86_64-w64-mingw32-
   51 """)
   52 
   53 def find(env):
   54     if env['machine'] == 'x86_64':
   55         prefixes = prefixes64
   56     else:
   57         prefixes = prefixes32
   58     for prefix in prefixes:
   59         # First search in the SCons path and then the OS path:
   60         if env.WhereIs(prefix + 'gcc') or SCons.Util.WhereIs(prefix + 'gcc'):
   61             return prefix
   62 
   63     return ''
   64 
   65 def shlib_generator(target, source, env, for_signature):
   66     cmd = SCons.Util.CLVar(['$SHLINK', '$SHLINKFLAGS']) 
   67 
   68     dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
   69     if dll: cmd.extend(['-o', dll])
   70 
   71     cmd.extend(['$SOURCES', '$_LIBDIRFLAGS', '$_LIBFLAGS'])
   72 
   73     implib = env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX')
   74     if implib: cmd.append('-Wl,--out-implib,'+implib.get_string(for_signature))
   75 
   76     def_target = env.FindIxes(target, 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX')
   77     if def_target: cmd.append('-Wl,--output-def,'+def_target.get_string(for_signature))
   78 
   79     return [cmd]
   80 
   81 def shlib_emitter(target, source, env):
   82     dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
   83     no_import_lib = env.get('no_import_lib', 0)
   84 
   85     if not dll:
   86         raise SCons.Errors.UserError("A shared library should have exactly one target with the suffix: %s" % env.subst("$SHLIBSUFFIX"))
   87     
   88     if not no_import_lib and \
   89        not env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX'):
   90 
   91         # Append an import library to the list of targets.
   92         target.append(env.ReplaceIxes(dll,  
   93                                       'SHLIBPREFIX', 'SHLIBSUFFIX',
   94                                       'LIBPREFIX', 'LIBSUFFIX'))
   95 
   96     # Append a def file target if there isn't already a def file target
   97     # or a def file source. There is no option to disable def file
   98     # target emitting, because I can't figure out why someone would ever
   99     # want to turn it off.
  100     def_source = env.FindIxes(source, 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX')
  101     def_target = env.FindIxes(target, 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX')
  102     if not def_source and not def_target:
  103         target.append(env.ReplaceIxes(dll,  
  104                                       'SHLIBPREFIX', 'SHLIBSUFFIX',
  105                                       'WIN32DEFPREFIX', 'WIN32DEFSUFFIX'))
  106     
  107     return (target, source)
  108                          
  109 
  110 shlib_action = SCons.Action.Action(shlib_generator, '$SHLINKCOMSTR', generator=1)
  111 
  112 res_action = SCons.Action.Action('$RCCOM', '$RCCOMSTR')
  113 
  114 res_builder = SCons.Builder.Builder(action=res_action, suffix='.o',
  115                                     source_scanner=SCons.Tool.SourceFileScanner)
  116 SCons.Tool.SourceFileScanner.add_scanner('.rc', SCons.Defaults.CScan)
  117 
  118 
  119 
  120 def generate(env):
  121     mingw_prefix = find(env)
  122 
  123     if mingw_prefix:
  124         dir = os.path.dirname(env.WhereIs(mingw_prefix + 'gcc') or SCons.Util.WhereIs(mingw_prefix + 'gcc'))
  125 
  126         # The mingw bin directory must be added to the path:
  127         path = env['ENV'].get('PATH', [])
  128         if not path: 
  129             path = []
  130         if SCons.Util.is_String(path):
  131             path = str.split(path, os.pathsep)
  132 
  133         env['ENV']['PATH'] = str.join(os.pathsep, [dir] + path)
  134 
  135     # Most of mingw is the same as gcc and friends...
  136     gnu_tools = ['gcc', 'g++', 'gnulink', 'ar', 'gas']
  137     for tool in gnu_tools:
  138         SCons.Tool.Tool(tool)(env)
  139 
  140     #... but a few things differ:
  141     env['CC'] = mingw_prefix + 'gcc'
  142     env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS')
  143     env['CXX'] = mingw_prefix + 'g++'
  144     env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS')
  145     env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -shared')
  146     env['SHLINKCOM']   = shlib_action
  147     env.Append(SHLIBEMITTER = [shlib_emitter])
  148     env['LINK'] = mingw_prefix + 'g++'
  149     env['AR'] = mingw_prefix + 'ar'
  150     env['RANLIB'] = mingw_prefix + 'ranlib'
  151     env['LINK'] = mingw_prefix + 'g++'
  152     env['AS'] = mingw_prefix + 'as'
  153     env['WIN32DEFPREFIX']        = ''
  154     env['WIN32DEFSUFFIX']        = '.def'
  155     env['SHOBJSUFFIX'] = '.o'
  156     env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 1
  157 
  158     env['RC'] = mingw_prefix + 'windres'
  159     env['RCFLAGS'] = SCons.Util.CLVar('')
  160     env['RCCOM'] = '$RC $_CPPDEFFLAGS $_CPPINCFLAGS ${INCPREFIX}${SOURCE.dir} $RCFLAGS -i $SOURCE -o $TARGET'
  161     env['BUILDERS']['RES'] = res_builder
  162     
  163     # Some setting from the platform also have to be overridden:
  164     env['OBJPREFIX']      = ''
  165     env['OBJSUFFIX']      = '.o'
  166     env['SHOBJPREFIX']    = '$OBJPREFIX'
  167     env['SHOBJSUFFIX']    = '$OBJSUFFIX'
  168     env['PROGPREFIX']     = ''
  169     env['PROGSUFFIX']     = '.exe'
  170     env['LIBPREFIX']      = 'lib'
  171     env['LIBSUFFIX']      = '.a'
  172     env['SHLIBPREFIX']    = ''
  173     env['SHLIBSUFFIX']    = '.dll'
  174     env['LIBPREFIXES']    = [ 'lib', '' ]
  175     env['LIBSUFFIXES']    = [ '.a', '.lib' ]
  176 
  177 def exists(env):
  178     return find(env)