316 lines
10 KiB
Python
316 lines
10 KiB
Python
"""custom
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Custom builders and methods.
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"""
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#
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# Copyright 2008 VMware, Inc.
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# All Rights Reserved.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# 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, sub license, 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 (including the
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# next paragraph) shall be included in all copies or substantial portions
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# of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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# IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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# ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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import os
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import os.path
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import re
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import sys
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import subprocess
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import SCons.Action
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import SCons.Builder
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import SCons.Scanner
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import fixes
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import source_list
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def quietCommandLines(env):
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# Quiet command lines
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# See also http://www.scons.org/wiki/HidingCommandLinesInOutput
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env['ASCOMSTR'] = " Assembling $SOURCE ..."
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env['ASPPCOMSTR'] = " Assembling $SOURCE ..."
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env['CCCOMSTR'] = " Compiling $SOURCE ..."
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env['SHCCCOMSTR'] = " Compiling $SOURCE ..."
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env['CXXCOMSTR'] = " Compiling $SOURCE ..."
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env['SHCXXCOMSTR'] = " Compiling $SOURCE ..."
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env['ARCOMSTR'] = " Archiving $TARGET ..."
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env['RANLIBCOMSTR'] = " Indexing $TARGET ..."
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env['LINKCOMSTR'] = " Linking $TARGET ..."
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env['SHLINKCOMSTR'] = " Linking $TARGET ..."
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env['LDMODULECOMSTR'] = " Linking $TARGET ..."
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env['SWIGCOMSTR'] = " Generating $TARGET ..."
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env['LEXCOMSTR'] = " Generating $TARGET ..."
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env['YACCCOMSTR'] = " Generating $TARGET ..."
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env['CODEGENCOMSTR'] = " Generating $TARGET ..."
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env['INSTALLSTR'] = " Installing $TARGET ..."
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def createConvenienceLibBuilder(env):
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"""This is a utility function that creates the ConvenienceLibrary
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Builder in an Environment if it is not there already.
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If it is already there, we return the existing one.
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Based on the stock StaticLibrary and SharedLibrary builders.
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"""
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try:
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convenience_lib = env['BUILDERS']['ConvenienceLibrary']
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except KeyError:
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action_list = [ SCons.Action.Action("$ARCOM", "$ARCOMSTR") ]
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if env.Detect('ranlib'):
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ranlib_action = SCons.Action.Action("$RANLIBCOM", "$RANLIBCOMSTR")
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action_list.append(ranlib_action)
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convenience_lib = SCons.Builder.Builder(action = action_list,
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emitter = '$LIBEMITTER',
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prefix = '$LIBPREFIX',
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suffix = '$LIBSUFFIX',
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src_suffix = '$SHOBJSUFFIX',
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src_builder = 'SharedObject')
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env['BUILDERS']['ConvenienceLibrary'] = convenience_lib
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return convenience_lib
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# TODO: handle import statements with multiple modules
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# TODO: handle from import statements
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import_re = re.compile(r'^\s*import\s+(\S+)\s*$', re.M)
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def python_scan(node, env, path):
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# http://www.scons.org/doc/0.98.5/HTML/scons-user/c2781.html#AEN2789
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contents = node.get_contents()
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source_dir = node.get_dir()
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imports = import_re.findall(contents)
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results = []
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for imp in imports:
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for dir in path:
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file = os.path.join(str(dir), imp.replace('.', os.sep) + '.py')
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if os.path.exists(file):
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results.append(env.File(file))
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break
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file = os.path.join(str(dir), imp.replace('.', os.sep), '__init__.py')
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if os.path.exists(file):
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results.append(env.File(file))
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break
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#print node, map(str, results)
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return results
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python_scanner = SCons.Scanner.Scanner(function = python_scan, skeys = ['.py'])
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def code_generate(env, script, target, source, command):
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"""Method to simplify code generation via python scripts.
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http://www.scons.org/wiki/UsingCodeGenerators
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http://www.scons.org/doc/0.98.5/HTML/scons-user/c2768.html
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"""
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# We're generating code using Python scripts, so we have to be
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# careful with our scons elements. This entry represents
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# the generator file *in the source directory*.
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script_src = env.File(script).srcnode()
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# This command creates generated code *in the build directory*.
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command = command.replace('$SCRIPT', script_src.path)
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action = SCons.Action.Action(command, "$CODEGENCOMSTR")
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code = env.Command(target, source, action)
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# Explicitly mark that the generated code depends on the generator,
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# and on implicitly imported python modules
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path = (script_src.get_dir(),)
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deps = [script_src]
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deps += script_src.get_implicit_deps(env, python_scanner, path)
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env.Depends(code, deps)
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# Running the Python script causes .pyc files to be generated in the
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# source directory. When we clean up, they should go too. So add side
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# effects for .pyc files
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for dep in deps:
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pyc = env.File(str(dep) + 'c')
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env.SideEffect(pyc, code)
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return code
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def createCodeGenerateMethod(env):
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env.Append(SCANNERS = python_scanner)
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env.AddMethod(code_generate, 'CodeGenerate')
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def _pkg_check_modules(env, name, modules):
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'''Simple wrapper for pkg-config.'''
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env['HAVE_' + name] = False
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# For backwards compatability
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env[name.lower()] = False
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if env['platform'] == 'windows':
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return
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if not env.Detect('pkg-config'):
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return
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if subprocess.call(["pkg-config", "--exists", ' '.join(modules)]) != 0:
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return
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# Strip version expressions from modules
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modules = [module.split(' ', 1)[0] for module in modules]
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# Other flags may affect the compilation of unrelated targets, so store
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# them with a prefix, (e.g., XXX_CFLAGS, XXX_LIBS, etc)
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try:
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flags = env.ParseFlags('!pkg-config --cflags --libs ' + ' '.join(modules))
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except OSError:
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return
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prefix = name + '_'
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for flag_name, flag_value in flags.iteritems():
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assert '_' not in flag_name
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env[prefix + flag_name] = flag_value
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env['HAVE_' + name] = True
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def pkg_check_modules(env, name, modules):
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sys.stdout.write('Checking for %s (%s)...' % (name, ' '.join(modules)))
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_pkg_check_modules(env, name, modules)
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result = env['HAVE_' + name]
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sys.stdout.write(' %s\n' % ['no', 'yes'][int(bool(result))])
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# XXX: For backwards compatability
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env[name.lower()] = result
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def pkg_use_modules(env, names):
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'''Search for all environment flags that match NAME_FOO and append them to
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the FOO environment variable.'''
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names = env.Flatten(names)
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for name in names:
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prefix = name + '_'
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if not 'HAVE_' + name in env:
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raise Exception('Attempt to use unknown module %s' % name)
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if not env['HAVE_' + name]:
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raise Exception('Attempt to use unavailable module %s' % name)
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flags = {}
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for flag_name, flag_value in env.Dictionary().iteritems():
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if flag_name.startswith(prefix):
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flag_name = flag_name[len(prefix):]
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if '_' not in flag_name:
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flags[flag_name] = flag_value
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if flags:
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env.MergeFlags(flags)
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def createPkgConfigMethods(env):
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env.AddMethod(pkg_check_modules, 'PkgCheckModules')
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env.AddMethod(pkg_use_modules, 'PkgUseModules')
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def parse_source_list(env, filename, names=None):
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# parse the source list file
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parser = source_list.SourceListParser()
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src = env.File(filename).srcnode()
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cur_srcdir = env.Dir('.').srcnode().abspath
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top_srcdir = env.Dir('#').abspath
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top_builddir = os.path.join(top_srcdir, env['build_dir'])
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# Normalize everything to / slashes
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cur_srcdir = cur_srcdir.replace('\\', '/')
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top_srcdir = top_srcdir.replace('\\', '/')
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top_builddir = top_builddir.replace('\\', '/')
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# Populate the symbol table of the Makefile parser.
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parser.add_symbol('top_srcdir', top_srcdir)
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parser.add_symbol('top_builddir', top_builddir)
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sym_table = parser.parse(src.abspath)
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if names:
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if isinstance(names, basestring):
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names = [names]
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symbols = names
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else:
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symbols = sym_table.keys()
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# convert the symbol table to source lists
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src_lists = {}
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for sym in symbols:
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val = sym_table[sym]
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srcs = []
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for f in val.split():
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if f:
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# Process source paths
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if f.startswith(top_builddir + '/src'):
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# Automake puts build output on a `src` subdirectory, but
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# SCons does not, so strip it here.
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f = top_builddir + f[len(top_builddir + '/src'):]
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if f.startswith(cur_srcdir + '/'):
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# Prefer relative source paths, as absolute files tend to
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# cause duplicate actions.
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f = f[len(cur_srcdir + '/'):]
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srcs.append(f)
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src_lists[sym] = srcs
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# if names are given, concatenate the lists
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if names:
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srcs = []
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for name in names:
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srcs.extend(src_lists[name])
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return srcs
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else:
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return src_lists
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def createParseSourceListMethod(env):
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env.AddMethod(parse_source_list, 'ParseSourceList')
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def generate(env):
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"""Common environment generation code"""
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verbose = env.get('verbose', False) or not env.get('quiet', True)
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if not verbose:
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quietCommandLines(env)
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# Custom builders and methods
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createConvenienceLibBuilder(env)
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createCodeGenerateMethod(env)
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createPkgConfigMethods(env)
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createParseSourceListMethod(env)
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# for debugging
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#print env.Dump()
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def exists(env):
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return 1
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