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author | David Robillard <d@drobilla.net> | 2019-04-21 23:04:24 +0200 |
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committer | David Robillard <d@drobilla.net> | 2019-04-21 23:04:24 +0200 |
commit | 9091b844259d78b42f94656dd3412075ce6a76a1 (patch) | |
tree | 1258158fbc5ebcf64196e82049ba85e9451738d2 /waflib/extras/pch.py | |
parent | c1637b46f9ff960f58dcf2bb3b69bff231f8acfd (diff) | |
download | lilv-9091b844259d78b42f94656dd3412075ce6a76a1.tar.gz lilv-9091b844259d78b42f94656dd3412075ce6a76a1.tar.bz2 lilv-9091b844259d78b42f94656dd3412075ce6a76a1.zip |
Switch to using a submodule for autowaf
Diffstat (limited to 'waflib/extras/pch.py')
m--------- | waflib | 0 | ||||
-rw-r--r-- | waflib/extras/pch.py | 148 |
2 files changed, 0 insertions, 148 deletions
diff --git a/waflib b/waflib new file mode 160000 +Subproject 2314e236ca6e7d94a26c3c17091da0f25f5867f diff --git a/waflib/extras/pch.py b/waflib/extras/pch.py deleted file mode 100644 index 103e752..0000000 --- a/waflib/extras/pch.py +++ /dev/null @@ -1,148 +0,0 @@ -#! /usr/bin/env python -# encoding: utf-8 -# Alexander Afanasyev (UCLA), 2014 - -""" -Enable precompiled C++ header support (currently only clang++ and g++ are supported) - -To use this tool, wscript should look like: - - def options(opt): - opt.load('pch') - # This will add `--with-pch` configure option. - # Unless --with-pch during configure stage specified, the precompiled header support is disabled - - def configure(conf): - conf.load('pch') - # this will set conf.env.WITH_PCH if --with-pch is specified and the supported compiler is used - # Unless conf.env.WITH_PCH is set, the precompiled header support is disabled - - def build(bld): - bld(features='cxx pch', - target='precompiled-headers', - name='precompiled-headers', - headers='a.h b.h c.h', # headers to pre-compile into `precompiled-headers` - - # Other parameters to compile precompiled headers - # includes=..., - # export_includes=..., - # use=..., - # ... - - # Exported parameters will be propagated even if precompiled headers are disabled - ) - - bld( - target='test', - features='cxx cxxprogram', - source='a.cpp b.cpp d.cpp main.cpp', - use='precompiled-headers', - ) - - # or - - bld( - target='test', - features='pch cxx cxxprogram', - source='a.cpp b.cpp d.cpp main.cpp', - headers='a.h b.h c.h', - ) - -Note that precompiled header must have multiple inclusion guards. If the guards are missing, any benefit of precompiled header will be voided and compilation may fail in some cases. -""" - -import os -from waflib import Task, TaskGen, Utils -from waflib.Tools import c_preproc, cxx - - -PCH_COMPILER_OPTIONS = { - 'clang++': [['-include'], '.pch', ['-x', 'c++-header']], - 'g++': [['-include'], '.gch', ['-x', 'c++-header']], -} - - -def options(opt): - opt.add_option('--without-pch', action='store_false', default=True, dest='with_pch', help='''Try to use precompiled header to speed up compilation (only g++ and clang++)''') - -def configure(conf): - if (conf.options.with_pch and conf.env['COMPILER_CXX'] in PCH_COMPILER_OPTIONS.keys()): - conf.env.WITH_PCH = True - flags = PCH_COMPILER_OPTIONS[conf.env['COMPILER_CXX']] - conf.env.CXXPCH_F = flags[0] - conf.env.CXXPCH_EXT = flags[1] - conf.env.CXXPCH_FLAGS = flags[2] - - -@TaskGen.feature('pch') -@TaskGen.before('process_source') -def apply_pch(self): - if not self.env.WITH_PCH: - return - - if getattr(self.bld, 'pch_tasks', None) is None: - self.bld.pch_tasks = {} - - if getattr(self, 'headers', None) is None: - return - - self.headers = self.to_nodes(self.headers) - - if getattr(self, 'name', None): - try: - task = self.bld.pch_tasks["%s.%s" % (self.name, self.idx)] - self.bld.fatal("Duplicated 'pch' task with name %r" % "%s.%s" % (self.name, self.idx)) - except KeyError: - pass - - out = '%s.%d%s' % (self.target, self.idx, self.env['CXXPCH_EXT']) - out = self.path.find_or_declare(out) - task = self.create_task('gchx', self.headers, out) - - # target should be an absolute path of `out`, but without precompiled header extension - task.target = out.abspath()[:-len(out.suffix())] - - self.pch_task = task - if getattr(self, 'name', None): - self.bld.pch_tasks["%s.%s" % (self.name, self.idx)] = task - -@TaskGen.feature('cxx') -@TaskGen.after_method('process_source', 'propagate_uselib_vars') -def add_pch(self): - if not (self.env['WITH_PCH'] and getattr(self, 'use', None) and getattr(self, 'compiled_tasks', None) and getattr(self.bld, 'pch_tasks', None)): - return - - pch = None - # find pch task, if any - - if getattr(self, 'pch_task', None): - pch = self.pch_task - else: - for use in Utils.to_list(self.use): - try: - pch = self.bld.pch_tasks[use] - except KeyError: - pass - - if pch: - for x in self.compiled_tasks: - x.env.append_value('CXXFLAGS', self.env['CXXPCH_F'] + [pch.target]) - -class gchx(Task.Task): - run_str = '${CXX} ${ARCH_ST:ARCH} ${CXXFLAGS} ${CXXPCH_FLAGS} ${FRAMEWORKPATH_ST:FRAMEWORKPATH} ${CPPPATH_ST:INCPATHS} ${DEFINES_ST:DEFINES} ${CXXPCH_F:SRC} ${CXX_SRC_F}${SRC[0].abspath()} ${CXX_TGT_F}${TGT[0].abspath()} ${CPPFLAGS}' - scan = c_preproc.scan - color = 'BLUE' - ext_out=['.h'] - - def runnable_status(self): - try: - node_deps = self.generator.bld.node_deps[self.uid()] - except KeyError: - node_deps = [] - ret = Task.Task.runnable_status(self) - if ret == Task.SKIP_ME and self.env.CXX_NAME == 'clang': - t = os.stat(self.outputs[0].abspath()).st_mtime - for n in self.inputs + node_deps: - if os.stat(n.abspath()).st_mtime > t: - return Task.RUN_ME - return ret |