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Eliot Horowitz
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# $Id$ | ||
# | ||
# SCons builder for gcc's precompiled headers | ||
# Copyright (C) 2006 Tim Blechmann | ||
# | ||
# This program is free software; you can redistribute it and/or modify | ||
# it under the terms of the GNU General Public License as published by | ||
# the Free Software Foundation; either version 2 of the License, or | ||
# (at your option) any later version. | ||
# | ||
# This program is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
# GNU General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU General Public License | ||
# along with this program; see the file COPYING. If not, write to | ||
# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | ||
# Boston, MA 02111-1307, USA. | ||
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# $Revision$ | ||
# $LastChangedRevision$ | ||
# $LastChangedDate$ | ||
# $LastChangedBy$ | ||
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import SCons.Action | ||
import SCons.Builder | ||
import SCons.Scanner.C | ||
import SCons.Util | ||
import SCons.Script | ||
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SCons.Script.EnsureSConsVersion(0,96,92) | ||
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GchAction = SCons.Action.Action('$GCHCOM', '$GCHCOMSTR') | ||
GchShAction = SCons.Action.Action('$GCHSHCOM', '$GCHSHCOMSTR') | ||
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def gen_suffix(env, sources): | ||
return sources[0].get_suffix() + env['GCHSUFFIX'] | ||
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GchShBuilder = SCons.Builder.Builder(action = GchShAction, | ||
source_scanner = SCons.Scanner.C.CScanner(), | ||
suffix = gen_suffix) | ||
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GchBuilder = SCons.Builder.Builder(action = GchAction, | ||
source_scanner = SCons.Scanner.C.CScanner(), | ||
suffix = gen_suffix) | ||
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def static_pch_emitter(target,source,env): | ||
SCons.Defaults.StaticObjectEmitter( target, source, env ) | ||
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scanner = SCons.Scanner.C.CScanner() | ||
path = scanner.path(env) | ||
deps = scanner(source[0], env, path) | ||
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if env.has_key('Gch') and env['Gch']: | ||
if env['Gch'].path.strip('.gch') in [x.path for x in deps]: | ||
env.Depends(target, env['Gch']) | ||
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return (target, source) | ||
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def shared_pch_emitter(target,source,env): | ||
SCons.Defaults.SharedObjectEmitter( target, source, env ) | ||
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scanner = SCons.Scanner.C.CScanner() | ||
path = scanner.path(env) | ||
deps = scanner(source[0], env, path) | ||
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if env.has_key('GchSh') and env['GchSh']: | ||
if env['GchSh'].path.strip('.gch') in [x.path for x in deps]: | ||
env.Depends(target, env['GchSh']) | ||
return (target, source) | ||
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def generate(env): | ||
""" | ||
Add builders and construction variables for the Gch builder. | ||
""" | ||
env.Append(BUILDERS = { | ||
'gch': env.Builder( | ||
action = GchAction, | ||
target_factory = env.fs.File, | ||
), | ||
'gchsh': env.Builder( | ||
action = GchShAction, | ||
target_factory = env.fs.File, | ||
), | ||
}) | ||
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try: | ||
bld = env['BUILDERS']['Gch'] | ||
bldsh = env['BUILDERS']['GchSh'] | ||
except KeyError: | ||
bld = GchBuilder | ||
bldsh = GchShBuilder | ||
env['BUILDERS']['Gch'] = bld | ||
env['BUILDERS']['GchSh'] = bldsh | ||
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env['GCHCOM'] = '$CXX -o $TARGET -x c++-header -c $CXXFLAGS $_CCCOMCOM $SOURCE' | ||
env['GCHSHCOM'] = '$CXX -o $TARGET -x c++-header -c $SHCXXFLAGS $_CCCOMCOM $SOURCE' | ||
env['GCHSUFFIX'] = '.gch' | ||
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for suffix in SCons.Util.Split('.c .C .cc .cxx .cpp .c++'): | ||
env['BUILDERS']['StaticObject'].add_emitter( suffix, static_pch_emitter ) | ||
env['BUILDERS']['SharedObject'].add_emitter( suffix, shared_pch_emitter ) | ||
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def exists(env): | ||
return env.Detect('g++') |