/[ascend]/trunk/scons/crossmingw.py
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Contents of /trunk/scons/crossmingw.py

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Wed Apr 25 11:30:47 2007 UTC (13 years, 5 months ago) by jpye
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Some experimenting with crossmingw cross compiling.
Removed shebangs from files that shouldn't have them.
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 """
10
11 #
12 # Copyright (c) 2001, 2002, 2003, 2004 The SCons Foundation
13 #
14 # Permission is hereby granted, free of charge, to any person obtaining
15 # a copy of this software and associated documentation files (the
16 # "Software"), to deal in the Software without restriction, including
17 # without limitation the rights to use, copy, modify, merge, publish,
18 # distribute, sublicense, and/or sell copies of the Software, and to
19 # permit persons to whom the Software is furnished to do so, subject to
20 # the following conditions:
21 #
22 # The above copyright notice and this permission notice shall be included
23 # in all copies or substantial portions of the Software.
24 #
25 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
26 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
27 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
29 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 #
33
34 __revision__ = "/home/scons/scons/branch.0/branch.96/baseline/src/engine/SCons/Tool/mingw.py 0.96.90.D001 2005/02/15 20:11:37 knight"
35
36 import os
37 import os.path
38 import string
39
40 import SCons.Action
41 import SCons.Builder
42 import SCons.Tool
43 import SCons.Util
44
45 # This is what we search for to find mingw:
46 prefixes = SCons.Util.Split("""
47 mingw32-
48 mingw32msvc-
49 i386-mingw32-
50 i486-mingw32-
51 i586-mingw32-
52 i686-mingw32-
53 i386-mingw32msvc-
54 i486-mingw32msvc-
55 i586-mingw32msvc-
56 i686-mingw32msvc-
57 """)
58
59 def find(env):
60 for prefix in prefixes:
61 # First search in the SCons path and then the OS path:
62 if env.WhereIs(prefix + 'gcc') or SCons.Util.WhereIs(prefix + 'gcc'):
63 return prefix
64
65 return ''
66
67 def shlib_generator(target, source, env, for_signature):
68 cmd = SCons.Util.CLVar(['$SHLINK', '$SHLINKFLAGS'])
69
70 dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
71 if dll: cmd.extend(['-o', dll])
72
73 cmd.extend(['$SOURCES', '$_LIBDIRFLAGS', '$_LIBFLAGS'])
74
75 implib = env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX')
76 if implib: cmd.append('-Wl,--out-implib,'+implib.get_string(for_signature))
77
78 def_target = env.FindIxes(target, 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX')
79 if def_target: cmd.append('-Wl,--output-def,'+def_target.get_string(for_signature))
80
81 return [cmd]
82
83 def shlib_emitter(target, source, env):
84 dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
85 no_import_lib = env.get('no_import_lib', 0)
86
87 if not dll:
88 raise SCons.Errors.UserError, "A shared library should have exactly one target with the suffix: %s" % env.subst("$SHLIBSUFFIX")
89
90 if not no_import_lib and \
91 not env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX'):
92
93 # Append an import library to the list of targets.
94 target.append(env.ReplaceIxes(dll,
95 'SHLIBPREFIX', 'SHLIBSUFFIX',
96 'LIBPREFIX', 'LIBSUFFIX'))
97
98 # Append a def file target if there isn't already a def file target
99 # or a def file source. There is no option to disable def file
100 # target emitting, because I can't figure out why someone would ever
101 # want to turn it off.
102 def_source = env.FindIxes(source, 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX')
103 def_target = env.FindIxes(target, 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX')
104 if not def_source and not def_target:
105 target.append(env.ReplaceIxes(dll,
106 'SHLIBPREFIX', 'SHLIBSUFFIX',
107 'WIN32DEFPREFIX', 'WIN32DEFSUFFIX'))
108
109 return (target, source)
110
111
112 shlib_action = SCons.Action.Action(shlib_generator, generator=1)
113
114 res_action = SCons.Action.Action('$RCCOM', '$RCCOMSTR')
115
116 res_builder = SCons.Builder.Builder(action=res_action, suffix='.o',
117 source_scanner=SCons.Tool.SourceFileScanner)
118 SCons.Tool.SourceFileScanner.add_scanner('.rc', SCons.Defaults.CScan)
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 = string.split(path, os.pathsep)
132
133 env['ENV']['PATH'] = string.join([dir] + path, os.pathsep)
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('$LINKFLAGS -shared')
146 env['SHLINKCOM'] = shlib_action
147 env.Append(SHLIBEMITTER = [shlib_emitter])
148 env['LINK'] = mingw_prefix + 'g++'
149 env['AS'] = mingw_prefix + 'as'
150 env['WIN32DEFPREFIX'] = ''
151 env['WIN32DEFSUFFIX'] = '.def'
152 env['SHOBJSUFFIX'] = '.o'
153 env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 1
154
155 env['RC'] = mingw_prefix + 'windres'
156 env['RCFLAGS'] = SCons.Util.CLVar('')
157 env['RCCOM'] = '$RC $_CPPDEFFLAGS $_CPPINCFLAGS ${INCPREFIX}${SOURCE.dir} $RCFLAGS -i $SOURCE -o $TARGET'
158 env['BUILDERS']['RES'] = res_builder
159
160 # Some setting from the platform also have to be overridden:
161 env['OBJPREFIX'] = ''
162 env['OBJSUFFIX'] = '.o'
163 env['LIBPREFIX'] = 'lib'
164 env['LIBSUFFIX'] = '.a'
165 env['SHOBJPREFIX'] = '$OBJPREFIX'
166 env['SHOBJSUFFIX'] = '$OBJSUFFIX'
167 env['PROGPREFIX'] = ''
168 env['PROGSUFFIX'] = '.exe'
169 env['LIBPREFIX'] = ''
170 env['LIBSUFFIX'] = '.lib'
171 env['SHLIBPREFIX'] = ''
172 env['SHLIBSUFFIX'] = '.dll'
173 env['LIBPREFIXES'] = [ '$LIBPREFIX' ]
174 env['LIBSUFFIXES'] = [ '$LIBSUFFIX' ]
175
176 def exists(env):
177 return find(env)
178

john.pye@anu.edu.au
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