127 lines
4.0 KiB
Python
127 lines
4.0 KiB
Python
#
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# SCons builder for gcc's precompiled headers
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# Copyright (C) 2006 Tim Blechmann
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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# 1.1
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#
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# 09-11-2011 Pedro Larroy: Fixed dependency emitter not working with variant dir
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#
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#
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import SCons.Action
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import SCons.Builder
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import SCons.Scanner.C
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import SCons.Util
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import SCons.Script
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import os
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SCons.Script.EnsureSConsVersion(0,96,92)
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GchAction = SCons.Action.Action('$GCHCOM', '$GCHCOMSTR')
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GchShAction = SCons.Action.Action('$GCHSHCOM', '$GCHSHCOMSTR')
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def gen_suffix(env, sources):
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return sources[0].get_suffix() + env['GCHSUFFIX']
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GchShBuilder = SCons.Builder.Builder(action = GchShAction,
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source_scanner = SCons.Scanner.C.CScanner(),
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suffix = gen_suffix)
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GchBuilder = SCons.Builder.Builder(action = GchAction,
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source_scanner = SCons.Scanner.C.CScanner(),
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suffix = gen_suffix)
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def header_path(node):
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h_path = node.abspath
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idx = h_path.rfind('.gch')
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if idx != -1:
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h_path = h_path[0:idx]
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if not os.path.isfile(h_path):
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raise SCons.Errors.StopError("can't find header file: {0}".format(h_path))
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return h_path
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else:
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raise SCons.Errors.StopError("{0} file doesn't have .gch extension".format(h_path))
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def static_pch_emitter(target,source,env):
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SCons.Defaults.StaticObjectEmitter( target, source, env )
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scanner = SCons.Scanner.C.CScanner()
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path = scanner.path(env)
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deps = scanner(source[0], env, path)
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if env.get('Gch'):
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h_path = header_path(env['Gch'])
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if h_path in [x.abspath for x in deps]:
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#print 'Found dep. on pch: ', target[0], ' -> ', env['Gch']
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env.Depends(target, env['Gch'])
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return (target, source)
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def shared_pch_emitter(target,source,env):
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SCons.Defaults.SharedObjectEmitter( target, source, env )
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scanner = SCons.Scanner.C.CScanner()
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path = scanner.path(env)
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deps = scanner(source[0], env, path)
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if env.get('GchSh'):
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h_path = header_path(env['GchSh'])
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if h_path in [x.abspath for x in deps]:
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#print 'Found dep. on pch (shared): ', target[0], ' -> ', env['Gch']
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env.Depends(target, env['GchSh'])
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return (target, source)
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def generate(env):
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"""
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Add builders and construction variables for the Gch builder.
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"""
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env.Append(BUILDERS = {
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'gch': env.Builder(
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action = GchAction,
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target_factory = env.fs.File,
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),
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'gchsh': env.Builder(
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action = GchShAction,
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target_factory = env.fs.File,
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),
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})
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try:
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bld = env['BUILDERS']['Gch']
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bldsh = env['BUILDERS']['GchSh']
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except KeyError:
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bld = GchBuilder
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bldsh = GchShBuilder
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env['BUILDERS']['Gch'] = bld
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env['BUILDERS']['GchSh'] = bldsh
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env['GCHCOM'] = '$CXX -Wall -o $TARGET -x c++-header -c $CXXFLAGS $CCFLAGS $_CCCOMCOM $SOURCE'
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env['GCHSHCOM'] = '$CXX -o $TARGET -x c++-header -c $SHCXXFLAGS $CCFLAGS $_CCCOMCOM $SOURCE'
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env['GCHSUFFIX'] = '.gch'
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for suffix in SCons.Util.Split('.c .C .cc .cxx .cpp .c++'):
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env['BUILDERS']['StaticObject'].add_emitter( suffix, static_pch_emitter )
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env['BUILDERS']['SharedObject'].add_emitter( suffix, shared_pch_emitter )
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def exists(env):
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return env.Detect('g++')
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