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113 lines
4.2 KiB
113 lines
4.2 KiB
16 years ago
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"""SCons.Tool.link
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Tool-specific initialization for the generic Posix linker.
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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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#
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# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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__revision__ = "src/engine/SCons/Tool/link.py 3842 2008/12/20 22:59:52 scons"
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import SCons.Defaults
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import SCons.Tool
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import SCons.Util
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import SCons.Warnings
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from SCons.Tool.FortranCommon import isfortran
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cplusplus = __import__('c++', globals(), locals(), [])
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issued_mixed_link_warning = False
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def smart_link(source, target, env, for_signature):
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has_cplusplus = cplusplus.iscplusplus(source)
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has_fortran = isfortran(env, source)
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if has_cplusplus and has_fortran:
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global issued_mixed_link_warning
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if not issued_mixed_link_warning:
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msg = "Using $CXX to link Fortran and C++ code together.\n\t" + \
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"This may generate a buggy executable if the %s\n\t" + \
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"compiler does not know how to deal with Fortran runtimes."
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SCons.Warnings.warn(SCons.Warnings.FortranCxxMixWarning,
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msg % repr(env.subst('$CXX')))
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issued_mixed_link_warning = True
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return '$CXX'
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elif has_fortran:
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return '$FORTRAN'
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elif has_cplusplus:
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return '$CXX'
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return '$CC'
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def shlib_emitter(target, source, env):
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for tgt in target:
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tgt.attributes.shared = 1
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return (target, source)
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def generate(env):
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"""Add Builders and construction variables for gnulink to an Environment."""
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SCons.Tool.createSharedLibBuilder(env)
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SCons.Tool.createProgBuilder(env)
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env['SHLINK'] = '$LINK'
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env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -shared')
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env['SHLINKCOM'] = '$SHLINK -o $TARGET $SHLINKFLAGS $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
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# don't set up the emitter, cause AppendUnique will generate a list
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# starting with None :-(
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env.Append(SHLIBEMITTER = [shlib_emitter])
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env['SMARTLINK'] = smart_link
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env['LINK'] = "$SMARTLINK"
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env['LINKFLAGS'] = SCons.Util.CLVar('')
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env['LINKCOM'] = '$LINK -o $TARGET $LINKFLAGS $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
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env['LIBDIRPREFIX']='-L'
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env['LIBDIRSUFFIX']=''
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env['_LIBFLAGS']='${_stripixes(LIBLINKPREFIX, LIBS, LIBLINKSUFFIX, LIBPREFIXES, LIBSUFFIXES, __env__)}'
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env['LIBLINKPREFIX']='-l'
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env['LIBLINKSUFFIX']=''
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if env['PLATFORM'] == 'hpux':
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env['SHLIBSUFFIX'] = '.sl'
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elif env['PLATFORM'] == 'aix':
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env['SHLIBSUFFIX'] = '.a'
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# For most platforms, a loadable module is the same as a shared
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# library. Platforms which are different can override these, but
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# setting them the same means that LoadableModule works everywhere.
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SCons.Tool.createLoadableModuleBuilder(env)
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env['LDMODULE'] = '$SHLINK'
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env['LDMODULEPREFIX'] = '$SHLIBPREFIX'
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env['LDMODULESUFFIX'] = '$SHLIBSUFFIX'
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env['LDMODULEFLAGS'] = '$SHLINKFLAGS'
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env['LDMODULECOM'] = '$SHLINKCOM'
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def exists(env):
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# This module isn't really a Tool on its own, it's common logic for
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# other linkers.
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return None
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