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Diffstat (limited to '3rdParty/SCons/scons-3.0.1/engine/SCons/Tool/link.py')
| -rw-r--r-- | 3rdParty/SCons/scons-3.0.1/engine/SCons/Tool/link.py | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/3rdParty/SCons/scons-3.0.1/engine/SCons/Tool/link.py b/3rdParty/SCons/scons-3.0.1/engine/SCons/Tool/link.py new file mode 100644 index 0000000..07e9250 --- /dev/null +++ b/3rdParty/SCons/scons-3.0.1/engine/SCons/Tool/link.py @@ -0,0 +1,331 @@ + +"""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__ +# +# 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. +# +from __future__ import print_function + +__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__" + +import sys +import re +import os + +import SCons.Tool +import SCons.Util +import SCons.Warnings + +from SCons.Tool.FortranCommon import isfortran + +from SCons.Tool.DCommon import isD + +import SCons.Tool.cxx +cplusplus = SCons.Tool.cxx +# cplusplus = __import__(__package__+'.cxx', 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) + has_d = isD(env, source) + if has_cplusplus and has_fortran and not has_d: + global issued_mixed_link_warning + if not issued_mixed_link_warning: + msg = "Using $CXX to link Fortran and C++ code together.\n\t" + \ + "This may generate a buggy executable if the '%s'\n\t" + \ + "compiler does not know how to deal with Fortran runtimes." + SCons.Warnings.warn(SCons.Warnings.FortranCxxMixWarning, + msg % env.subst('$CXX')) + issued_mixed_link_warning = True + return '$CXX' + elif has_d: + env['LINKCOM'] = env['DLINKCOM'] + env['SHLINKCOM'] = env['SHDLINKCOM'] + return '$DC' + elif has_fortran: + return '$FORTRAN' + elif has_cplusplus: + return '$CXX' + return '$CC' + +def _lib_emitter(target, source, env, **kw): + Verbose = False + if Verbose: + print("_lib_emitter: target[0]={:r}".format(target[0].get_path())) + for tgt in target: + tgt.attributes.shared = 1 + + try: + symlink_generator = kw['symlink_generator'] + except KeyError: + pass + else: + if Verbose: + print("_lib_emitter: symlink_generator={:r}".format(symlink_generator)) + symlinks = symlink_generator(env, target[0]) + if Verbose: + print("_lib_emitter: symlinks={:r}".format(symlinks)) + + if symlinks: + SCons.Tool.EmitLibSymlinks(env, symlinks, target[0]) + target[0].attributes.shliblinks = symlinks + return (target, source) + +def shlib_emitter(target, source, env): + return _lib_emitter(target, source, env, symlink_generator = SCons.Tool.ShLibSymlinkGenerator) + +def ldmod_emitter(target, source, env): + return _lib_emitter(target, source, env, symlink_generator = SCons.Tool.LdModSymlinkGenerator) + +# This is generic enough to be included here... +def _versioned_lib_name(env, libnode, version, prefix, suffix, prefix_generator, suffix_generator, **kw): + """For libnode='/optional/dir/libfoo.so.X.Y.Z' it returns 'libfoo.so'""" + Verbose = False + + if Verbose: + print("_versioned_lib_name: libnode={:r}".format(libnode.get_path())) + print("_versioned_lib_name: version={:r}".format(version)) + print("_versioned_lib_name: prefix={:r}".format(prefix)) + print("_versioned_lib_name: suffix={:r}".format(suffix)) + print("_versioned_lib_name: suffix_generator={:r}".format(suffix_generator)) + + versioned_name = os.path.basename(libnode.get_path()) + if Verbose: + print("_versioned_lib_name: versioned_name={:r}".format(versioned_name)) + + versioned_prefix = prefix_generator(env, **kw) + versioned_suffix = suffix_generator(env, **kw) + if Verbose: + print("_versioned_lib_name: versioned_prefix={:r}".format(versioned_prefix)) + print("_versioned_lib_name: versioned_suffix={:r}".format(versioned_suffix)) + + versioned_prefix_re = '^' + re.escape(versioned_prefix) + versioned_suffix_re = re.escape(versioned_suffix) + '$' + name = re.sub(versioned_prefix_re, prefix, versioned_name) + name = re.sub(versioned_suffix_re, suffix, name) + if Verbose: + print("_versioned_lib_name: name={:r}".format(name)) + return name + +def _versioned_shlib_name(env, libnode, version, prefix, suffix, **kw): + pg = SCons.Tool.ShLibPrefixGenerator + sg = SCons.Tool.ShLibSuffixGenerator + return _versioned_lib_name(env, libnode, version, prefix, suffix, pg, sg, **kw) + +def _versioned_ldmod_name(env, libnode, version, prefix, suffix, **kw): + pg = SCons.Tool.LdModPrefixGenerator + sg = SCons.Tool.LdModSuffixGenerator + return _versioned_lib_name(env, libnode, version, prefix, suffix, pg, sg, **kw) + +def _versioned_lib_suffix(env, suffix, version): + """For suffix='.so' and version='0.1.2' it returns '.so.0.1.2'""" + Verbose = False + if Verbose: + print("_versioned_lib_suffix: suffix={:r}".format(suffix)) + print("_versioned_lib_suffix: version={:r}".format(version)) + if not suffix.endswith(version): + suffix = suffix + '.' + version + if Verbose: + print("_versioned_lib_suffix: return suffix={:r}".format(suffix)) + return suffix + +def _versioned_lib_soname(env, libnode, version, prefix, suffix, name_func): + """For libnode='/optional/dir/libfoo.so.X.Y.Z' it returns 'libfoo.so.X'""" + Verbose = False + if Verbose: + print("_versioned_lib_soname: version={:r}".format(version)) + name = name_func(env, libnode, version, prefix, suffix) + if Verbose: + print("_versioned_lib_soname: name={:r}".format(name)) + major = version.split('.')[0] + soname = name + '.' + major + if Verbose: + print("_versioned_lib_soname: soname={:r}".format(soname)) + return soname + +def _versioned_shlib_soname(env, libnode, version, prefix, suffix): + return _versioned_lib_soname(env, libnode, version, prefix, suffix, _versioned_shlib_name) + +def _versioned_ldmod_soname(env, libnode, version, prefix, suffix): + return _versioned_lib_soname(env, libnode, version, prefix, suffix, _versioned_ldmod_name) + +def _versioned_lib_symlinks(env, libnode, version, prefix, suffix, name_func, soname_func): + """Generate link names that should be created for a versioned shared lirbrary. + Returns a dictionary in the form { linkname : linktarget } + """ + Verbose = False + + if Verbose: + print("_versioned_lib_symlinks: libnode={:r}".format(libnode.get_path())) + print("_versioned_lib_symlinks: version={:r}".format(version)) + + if sys.platform.startswith('openbsd'): + # OpenBSD uses x.y shared library versioning numbering convention + # and doesn't use symlinks to backwards-compatible libraries + if Verbose: + print("_versioned_lib_symlinks: return symlinks={:r}".format(None)) + return None + + linkdir = libnode.get_dir() + if Verbose: + print("_versioned_lib_symlinks: linkdir={:r}".format(linkdir.get_path())) + + name = name_func(env, libnode, version, prefix, suffix) + if Verbose: + print("_versioned_lib_symlinks: name={:r}".format(name)) + + soname = soname_func(env, libnode, version, prefix, suffix) + + link0 = env.fs.File(soname, linkdir) + link1 = env.fs.File(name, linkdir) + + # We create direct symlinks, not daisy-chained. + if link0 == libnode: + # This enables SHLIBVERSION without periods (e.g. SHLIBVERSION=1) + symlinks = [ (link1, libnode) ] + else: + # This handles usual SHLIBVERSION, i.e. '1.2', '1.2.3', etc. + symlinks = [ (link0, libnode), (link1, libnode) ] + + if Verbose: + print("_versioned_lib_symlinks: return symlinks={:r}".format(SCons.Tool.StringizeLibSymlinks(symlinks))) + + return symlinks + +def _versioned_shlib_symlinks(env, libnode, version, prefix, suffix): + nf = _versioned_shlib_name + sf = _versioned_shlib_soname + return _versioned_lib_symlinks(env, libnode, version, prefix, suffix, nf, sf) + +def _versioned_ldmod_symlinks(env, libnode, version, prefix, suffix): + nf = _versioned_ldmod_name + sf = _versioned_ldmod_soname + return _versioned_lib_symlinks(env, libnode, version, prefix, suffix, nf, sf) + +def _versioned_lib_callbacks(): + return { + 'VersionedShLibSuffix' : _versioned_lib_suffix, + 'VersionedLdModSuffix' : _versioned_lib_suffix, + 'VersionedShLibSymlinks' : _versioned_shlib_symlinks, + 'VersionedLdModSymlinks' : _versioned_ldmod_symlinks, + 'VersionedShLibName' : _versioned_shlib_name, + 'VersionedLdModName' : _versioned_ldmod_name, + 'VersionedShLibSoname' : _versioned_shlib_soname, + 'VersionedLdModSoname' : _versioned_ldmod_soname, + }.copy() + +def _setup_versioned_lib_variables(env, **kw): + """ + Setup all variables required by the versioning machinery + """ + + tool = None + try: tool = kw['tool'] + except KeyError: pass + + use_soname = False + try: use_soname = kw['use_soname'] + except KeyError: pass + + # The $_SHLIBVERSIONFLAGS define extra commandline flags used when + # building VERSIONED shared libraries. It's always set, but used only + # when VERSIONED library is built (see __SHLIBVERSIONFLAGS in SCons/Defaults.py). + if use_soname: + # If the linker uses SONAME, then we need this little automata + if tool == 'sunlink': + env['_SHLIBVERSIONFLAGS'] = '$SHLIBVERSIONFLAGS -h $_SHLIBSONAME' + env['_LDMODULEVERSIONFLAGS'] = '$LDMODULEVERSIONFLAGS -h $_LDMODULESONAME' + else: + env['_SHLIBVERSIONFLAGS'] = '$SHLIBVERSIONFLAGS -Wl,-soname=$_SHLIBSONAME' + env['_LDMODULEVERSIONFLAGS'] = '$LDMODULEVERSIONFLAGS -Wl,-soname=$_LDMODULESONAME' + env['_SHLIBSONAME'] = '${ShLibSonameGenerator(__env__,TARGET)}' + env['_LDMODULESONAME'] = '${LdModSonameGenerator(__env__,TARGET)}' + env['ShLibSonameGenerator'] = SCons.Tool.ShLibSonameGenerator + env['LdModSonameGenerator'] = SCons.Tool.LdModSonameGenerator + else: + env['_SHLIBVERSIONFLAGS'] = '$SHLIBVERSIONFLAGS' + env['_LDMODULEVERSIONFLAGS'] = '$LDMODULEVERSIONFLAGS' + + # LDOMDULVERSIONFLAGS should always default to $SHLIBVERSIONFLAGS + env['LDMODULEVERSIONFLAGS'] = '$SHLIBVERSIONFLAGS' + + +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 $__SHLIBVERSIONFLAGS $__RPATH $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('') + # __RPATH is only set to something ($_RPATH typically) on platforms that support it. + env['LINKCOM'] = '$LINK -o $TARGET $LINKFLAGS $__RPATH $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'] = '$SHLINK' + env.Append(LDMODULEEMITTER = [ldmod_emitter]) + env['LDMODULEPREFIX'] = '$SHLIBPREFIX' + env['LDMODULESUFFIX'] = '$SHLIBSUFFIX' + env['LDMODULEFLAGS'] = '$SHLINKFLAGS' + env['LDMODULECOM'] = '$LDMODULE -o $TARGET $LDMODULEFLAGS $__LDMODULEVERSIONFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS' + env['LDMODULEVERSION'] = '$SHLIBVERSION' + env['LDMODULENOVERSIONSYMLINKS'] = '$SHLIBNOVERSIONSYMLINKS' + +def exists(env): + # This module isn't really a Tool on its own, it's common logic for + # other linkers. + return None + +# Local Variables: +# tab-width:4 +# indent-tabs-mode:nil +# End: +# vim: set expandtab tabstop=4 shiftwidth=4: |