94 lines
2.8 KiB
Python
94 lines
2.8 KiB
Python
"""SCons.Tool.cyglink
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Customization of gnulink for Cygwin (http://www.cygwin.com/)
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There normally shouldn't be any need to import this module directly.
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It will usually be imported through the generic SCons.Tool.Tool()
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selection method.
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"""
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import SCons.Action
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import SCons.Util
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import gnulink
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def shlib_generator(target, source, env, for_signature):
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cmd = SCons.Util.CLVar(['$SHLINK'])
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dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
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if dll: cmd.extend(['-o', dll])
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cmd.extend(['$SHLINKFLAGS', '$__RPATH'])
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implib = env.FindIxes(target, 'IMPLIBPREFIX', 'IMPLIBSUFFIX')
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if implib:
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cmd.extend([
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'-Wl,--out-implib='+implib.get_string(for_signature),
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'-Wl,--export-all-symbols',
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'-Wl,--enable-auto-import',
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'-Wl,--whole-archive', '$SOURCES',
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'-Wl,--no-whole-archive', '$_LIBDIRFLAGS', '$_LIBFLAGS'
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])
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else:
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cmd.extend(['$SOURCES', '$_LIBDIRFLAGS', '$_LIBFLAGS'])
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return [cmd]
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def shlib_emitter(target, source, env):
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dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
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no_import_lib = env.get('no_import_lib', 0)
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if not dll or len(target) > 1:
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raise SCons.Errors.UserError("A shared library should have exactly one target with the suffix: %s" % env.subst("$SHLIBSUFFIX"))
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# Remove any "lib" after the prefix
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pre = env.subst('$SHLIBPREFIX')
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if dll.name[len(pre):len(pre)+3] == 'lib':
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dll.name = pre + dll.name[len(pre)+3:]
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orig_target = target
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target = [env.fs.File(dll)]
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target[0].attributes.shared = 1
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# Append an import lib target
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if not no_import_lib:
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# Create list of target libraries as strings
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target_strings = env.ReplaceIxes(orig_target[0],
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'SHLIBPREFIX', 'SHLIBSUFFIX',
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'IMPLIBPREFIX', 'IMPLIBSUFFIX')
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implib_target = env.fs.File(target_strings)
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implib_target.attributes.shared = 1
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target.append(implib_target)
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return (target, source)
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shlib_action = SCons.Action.Action(shlib_generator, generator=1)
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def generate(env):
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"""Add Builders and construction variables for cyglink to an Environment."""
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gnulink.generate(env)
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env['LINKFLAGS'] = SCons.Util.CLVar('-Wl,-no-undefined')
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env['SHLINKCOM'] = shlib_action
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env['LDMODULECOM'] = shlib_action
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env.Append(SHLIBEMITTER = [shlib_emitter])
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env['SHLIBPREFIX'] = 'cyg'
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env['SHLIBSUFFIX'] = '.dll'
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env['IMPLIBPREFIX'] = 'lib'
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env['IMPLIBSUFFIX'] = '.dll.a'
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def exists(env):
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return gnulink.exists(env)
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# Local Variables:
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# tab-width:4
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# indent-tabs-mode:nil
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# End:
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# vim: set expandtab tabstop=4 shiftwidth=4:
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