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30668e1c79
This patch is a reorganization of our build files, which brings them slightly
closer in line with standard SCons organization.
In particular, the SConstruct file sets up the various "build environment"
objects, by examining the local system and command line parameters. Then, it
delegates to some SConscript files, which describe build rules, like how to
compile "mongod" from source.
Typically, you would create several SConscript files for a project this large,
after breaking the project into logical sub projects, such as "platform
abstraction", "data manager", "query optimizer", etc. That will be future work.
For now, we only separate out the special rules for executing smoke tests into
SConscript.smoke. Pretty much all other build rules are in src/mongo/SConscript.
"tools" are placed in site_scons/site_tools.
This patch also includes better support for building and tracking dependencies
among static libraries ("libdeps" and "MergeLibrary"), and some incumbent, minor
restructuring.
This patch introduces a "warning" message from SCons about framework.o having
two rules that generate it. It is harmless, for now, and will be removed in
future work.
Future work also includes eliminating use of the SCons "Glob" utility, and
restructuring the source code into sensible components.
113 lines
3.6 KiB
Python
113 lines
3.6 KiB
Python
# $Id$
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#
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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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# $Revision$
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# $LastChangedRevision$
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# $LastChangedDate$
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# $LastChangedBy$
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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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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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def header_path(env, node):
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assert len(node.sources) == 1
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path = node.sources[0].path
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return path
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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 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.has_key('Gch') and env['Gch']:
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if header_path(env, env['Gch']) in [x.path for x in deps]:
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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.has_key('GchSh') and env['GchSh']:
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if header_path(env, env['GchSh']) in [x.path for x in deps]:
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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 -o $TARGET -x c++-header -c $CXXFLAGS $_CCCOMCOM $SOURCE'
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env['GCHSHCOM'] = '$CXX -o $TARGET -x c++-header -c $SHCXXFLAGS $_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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