SConscript

def glob_recursive(path, pattern, exclude=None):
    import SCons.Node.FS
    globbed = Dir(path).glob(pattern, exclude=exclude)
    sources = []
    for source in globbed:
        if isinstance(source, SCons.Node.FS.Dir):
            childpath = os.path.join(path, os.path.basename(source.path))
            sources += glob_recursive(childpath, pattern, exclude=exclude)
        else:
            sources += [source]
    return sources


def build_protoc(root_dir):
    import os
    sources = glob_recursive(root_dir, '*', exclude=['*.cache', 'usr', '*.o', '*.lo'])
    env['protoc'] = File(os.path.join(root_dir, 'usr', 'bin', 'protoc'))
    lib_targets = [
        'libprotobuf.so.6',
        'libprotobuf.so.6.0.0',
        'libprotoc.so.6',
        'libprotoc.so.6.0.0']
    targets = [env['protoc']] + [File(os.path.join('usr', 'lib', x)) for x in lib_targets]
    env['protoc_depends'] = targets

    env.Command(targets,
                sources,
                "./autogen.sh && ./configure --prefix='%s' && make && make install" %
                Dir(os.path.join(root_dir, 'usr')).abspath,
                chdir=Dir(root_dir).abspath)