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import os
def main():
from optparse import OptionParser, OptionGroup
parser = OptionParser("usage: %prog [options]")
parser.add_option("", "--source-root", dest="source_root", metavar="PATH",
help="Path to the LLVM source (inferred if not given)",
action="store", default=None)
(opts, args) = parser.parse_args()
# Determine the LLVM source path, if not given.
source_root = opts.source_root
if source_root:
if not os.path.exists(os.path.join(source_root, 'lib', 'VMCore',
'Function.cpp')):
parser.error('invalid LLVM source root: %r' % source_root)
else:
llvmbuild_path = os.path.dirname(__file__)
llvm_build_path = os.path.dirname(llvmbuild_path)
utils_path = os.path.dirname(llvm_build_path)
source_root = os.path.dirname(utils_path)
if not os.path.exists(os.path.join(source_root, 'lib', 'VMCore',
'Function.cpp')):
parser.error('unable to infer LLVM source root, please specify')
if __name__=='__main__':
main()
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