building.py: add clang static analyzer support
It adds the '--clang-analyzer' option that could invoke clang as the static code checker. It is recommanded to work with 'scan-build' shipped with Clang. For example, `scan-build scons --clang-analyzer`.
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@ -88,6 +88,31 @@ def PrepareBuilding(env, root_directory, has_libcpu=False, remove_components = [
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action='store_true',
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default=False,
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help='Build Cscope cross reference database. Requires cscope installed.')
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AddOption('--clang-analyzer',
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dest='clang-analyzer',
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action='store_true',
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default=False,
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help='Perform static analyze with Clang-analyzer. '+\
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'Requires Clang installed.\n'+\
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'It is recommended to use with scan-build like this:\n'+\
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'`scan-build scons --clang-analyzer`\n'+\
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'If things goes well, scan-build will instruct you to invoke scan-view.')
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if GetOption('clang-analyzer'):
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# perform what scan-build does
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env.Replace(
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CC = 'ccc-analyzer',
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CXX = 'c++-analyzer',
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# skip as and link
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LINK = 'true',
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AS = 'true',)
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env["ENV"].update(x for x in os.environ.items() if x[0].startswith("CCC_"))
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# only check, don't compile. ccc-analyzer use CCC_CC as the CC.
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env['ENV']['CCC_CC'] = 'true'
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env['ENV']['CCC_CXX'] = 'true'
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# remove the POST_ACTION as it will cause meaningless errors(file not
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# found or something like that).
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rtconfig.POST_ACTION = ''
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# add build library option
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AddOption('--buildlib',
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@ -109,6 +134,12 @@ def PrepareBuilding(env, root_directory, has_libcpu=False, remove_components = [
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'cb':('keil', 'armcc')}
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tgt_name = GetOption('target')
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if tgt_name:
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# --target will change the toolchain settings which clang-analyzer is
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# depend on
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if GetOption('clang-analyzer'):
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print '--clang-analyzer cannot be used with --target'
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sys.exit(1)
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SetOption('no_exec', 1)
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try:
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rtconfig.CROSS_TOOL, rtconfig.PLATFORM = tgt_dict[tgt_name]
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