link.py.svn-base
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上传日期:2018-11-18
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- """SCons.Tool.link
- Tool-specific initialization for the generic Posix linker.
- There normally shouldn't be any need to import this module directly.
- It will usually be imported through the generic SCons.Tool.Tool()
- selection method.
- """
- #
- # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
- #
- # Permission is hereby granted, free of charge, to any person obtaining
- # a copy of this software and associated documentation files (the
- # "Software"), to deal in the Software without restriction, including
- # without limitation the rights to use, copy, modify, merge, publish,
- # distribute, sublicense, and/or sell copies of the Software, and to
- # permit persons to whom the Software is furnished to do so, subject to
- # the following conditions:
- #
- # The above copyright notice and this permission notice shall be included
- # in all copies or substantial portions of the Software.
- #
- # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
- # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- #
- __revision__ = "src/engine/SCons/Tool/link.py 3057 2008/06/09 22:21:00 knight"
- import SCons.Defaults
- import SCons.Tool
- import SCons.Util
- import SCons.Warnings
- from SCons.Tool.FortranCommon import isfortran
- cplusplus = __import__('c++', globals(), locals(), [])
- issued_mixed_link_warning = False
- def smart_link(source, target, env, for_signature):
- has_cplusplus = cplusplus.iscplusplus(source)
- has_fortran = isfortran(env, source)
- if has_cplusplus and has_fortran:
- global issued_mixed_link_warning
- if not issued_mixed_link_warning:
- msg = "Using $CXX to link Fortran and C++ code together.nt" +
- "This may generate a buggy executable if the %snt" +
- "compiler does not know how to deal with Fortran runtimes."
- SCons.Warnings.warn(SCons.Warnings.FortranCxxMixWarning,
- msg % repr(env.subst('$CXX')))
- issued_mixed_link_warning = True
- return '$CXX'
- elif has_fortran:
- return '$FORTRAN'
- elif has_cplusplus:
- return '$CXX'
- return '$CC'
- def shlib_emitter(target, source, env):
- for tgt in target:
- tgt.attributes.shared = 1
- return (target, source)
- def generate(env):
- """Add Builders and construction variables for gnulink to an Environment."""
- SCons.Tool.createSharedLibBuilder(env)
- SCons.Tool.createProgBuilder(env)
- env['SHLINK'] = '$LINK'
- env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -shared')
- env['SHLINKCOM'] = '$SHLINK -o $TARGET $SHLINKFLAGS $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
- # don't set up the emitter, cause AppendUnique will generate a list
- # starting with None :-(
- env.Append(SHLIBEMITTER = [shlib_emitter])
- env['SMARTLINK'] = smart_link
- env['LINK'] = "$SMARTLINK"
- env['LINKFLAGS'] = SCons.Util.CLVar('')
- env['LINKCOM'] = '$LINK -o $TARGET $LINKFLAGS $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
- env['LIBDIRPREFIX']='-L'
- env['LIBDIRSUFFIX']=''
- env['_LIBFLAGS']='${_stripixes(LIBLINKPREFIX, LIBS, LIBLINKSUFFIX, LIBPREFIXES, LIBSUFFIXES, __env__)}'
- env['LIBLINKPREFIX']='-l'
- env['LIBLINKSUFFIX']=''
- if env['PLATFORM'] == 'hpux':
- env['SHLIBSUFFIX'] = '.sl'
- elif env['PLATFORM'] == 'aix':
- env['SHLIBSUFFIX'] = '.a'
- # For most platforms, a loadable module is the same as a shared
- # library. Platforms which are different can override these, but
- # setting them the same means that LoadableModule works everywhere.
- SCons.Tool.createLoadableModuleBuilder(env)
- env['LDMODULE'] = '$SHLINK'
- env['LDMODULEPREFIX'] = '$SHLIBPREFIX'
- env['LDMODULESUFFIX'] = '$SHLIBSUFFIX'
- env['LDMODULEFLAGS'] = '$SHLINKFLAGS'
- env['LDMODULECOM'] = '$SHLINKCOM'
- def exists(env):
- # This module isn't really a Tool on its own, it's common logic for
- # other linkers.
- return None