3 Tool-specific initialization for the generic Posix linker.
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()
12 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
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:
22 # The above copyright notice and this permission notice shall be included
23 # in all copies or substantial portions of the Software.
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.
34 __revision__ = "src/engine/SCons/Tool/link.py 3842 2008/12/20 22:59:52 scons"
41 from SCons.Tool.FortranCommon import isfortran
43 cplusplus = __import__('c++', globals(), locals(), [])
45 issued_mixed_link_warning = False
47 def smart_link(source, target, env, for_signature):
48 has_cplusplus = cplusplus.iscplusplus(source)
49 has_fortran = isfortran(env, source)
50 if has_cplusplus and has_fortran:
51 global issued_mixed_link_warning
52 if not issued_mixed_link_warning:
53 msg = "Using $CXX to link Fortran and C++ code together.\n\t" + \
54 "This may generate a buggy executable if the %s\n\t" + \
55 "compiler does not know how to deal with Fortran runtimes."
56 SCons.Warnings.warn(SCons.Warnings.FortranCxxMixWarning,
57 msg % repr(env.subst('$CXX')))
58 issued_mixed_link_warning = True
66 def shlib_emitter(target, source, env):
68 tgt.attributes.shared = 1
69 return (target, source)
72 """Add Builders and construction variables for gnulink to an Environment."""
73 SCons.Tool.createSharedLibBuilder(env)
74 SCons.Tool.createProgBuilder(env)
76 env['SHLINK'] = '$LINK'
77 env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -shared')
78 env['SHLINKCOM'] = '$SHLINK -o $TARGET $SHLINKFLAGS $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
79 # don't set up the emitter, cause AppendUnique will generate a list
80 # starting with None :-(
81 env.Append(SHLIBEMITTER = [shlib_emitter])
82 env['SMARTLINK'] = smart_link
83 env['LINK'] = "$SMARTLINK"
84 env['LINKFLAGS'] = SCons.Util.CLVar('')
85 env['LINKCOM'] = '$LINK -o $TARGET $LINKFLAGS $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
86 env['LIBDIRPREFIX']='-L'
87 env['LIBDIRSUFFIX']=''
88 env['_LIBFLAGS']='${_stripixes(LIBLINKPREFIX, LIBS, LIBLINKSUFFIX, LIBPREFIXES, LIBSUFFIXES, __env__)}'
89 env['LIBLINKPREFIX']='-l'
90 env['LIBLINKSUFFIX']=''
92 if env['PLATFORM'] == 'hpux':
93 env['SHLIBSUFFIX'] = '.sl'
94 elif env['PLATFORM'] == 'aix':
95 env['SHLIBSUFFIX'] = '.a'
97 # For most platforms, a loadable module is the same as a shared
98 # library. Platforms which are different can override these, but
99 # setting them the same means that LoadableModule works everywhere.
100 SCons.Tool.createLoadableModuleBuilder(env)
101 env['LDMODULE'] = '$SHLINK'
102 env['LDMODULEPREFIX'] = '$SHLIBPREFIX'
103 env['LDMODULESUFFIX'] = '$SHLIBSUFFIX'
104 env['LDMODULEFLAGS'] = '$SHLINKFLAGS'
105 env['LDMODULECOM'] = '$SHLINKCOM'
110 # This module isn't really a Tool on its own, it's common logic for