2015-10-01 13:25:41 +00:00
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"""SCons.Tool.gnulink
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Tool-specific initialization for the gnu 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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2016-08-05 09:16:06 +00:00
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# Copyright (c) 2001 - 2016 The SCons Foundation
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2015-10-01 13:25:41 +00:00
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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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2017-06-05 08:25:21 +00:00
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__revision__ = "src/engine/SCons/Tool/gnulink.py rel_2.5.1:3735:9dc6cee5c168 2016/11/03 14:02:02 bdbaddog"
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2015-10-01 13:25:41 +00:00
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import SCons.Util
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2015-11-26 10:09:02 +00:00
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import SCons.Tool
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import os
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import sys
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import re
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2015-10-01 13:25:41 +00:00
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import link
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2015-11-26 10:09:02 +00:00
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2015-10-01 13:25:41 +00:00
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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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link.generate(env)
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if env['PLATFORM'] == 'hpux':
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env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -shared -fPIC')
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# __RPATH is set to $_RPATH in the platform specification if that
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# platform supports it.
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env['RPATHPREFIX'] = '-Wl,-rpath='
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env['RPATHSUFFIX'] = ''
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env['_RPATH'] = '${_concat(RPATHPREFIX, RPATH, RPATHSUFFIX, __env__)}'
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2015-11-26 10:09:02 +00:00
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# OpenBSD doesn't usually use SONAME for libraries
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use_soname = not sys.platform.startswith('openbsd')
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link._setup_versioned_lib_variables(env, tool = 'gnulink', use_soname = use_soname)
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env['LINKCALLBACKS'] = link._versioned_lib_callbacks()
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2016-08-05 09:16:06 +00:00
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# For backward-compatibility with older SCons versions
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2015-11-26 10:09:02 +00:00
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env['SHLIBVERSIONFLAGS'] = SCons.Util.CLVar('-Wl,-Bsymbolic')
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2015-10-01 13:25:41 +00:00
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def exists(env):
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# TODO: sync with link.smart_link() to choose a linker
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linkers = { 'CXX': ['g++'], 'CC': ['gcc'] }
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alltools = []
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for langvar, linktools in linkers.items():
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if langvar in env: # use CC over CXX when user specified CC but not CXX
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return SCons.Tool.FindTool(linktools, env)
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alltools.extend(linktools)
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return SCons.Tool.FindTool(alltools, env) # find CXX or CC
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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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