install.py 文件源码

def copyFuncVersionedLib(dest, source, env):
    """Install a versioned library into a destination by copying,
    (including copying permission/mode bits) and then creating
    required symlinks."""

    if os.path.isdir(source):
        raise SCons.Errors.UserError("cannot install directory `%s' as a version library" % str(source) )
    else:
        # remove the link if it is already there
        try:
            os.remove(dest)
        except:
            pass
        shutil.copy2(source, dest)
        st = os.stat(source)
        os.chmod(dest, stat.S_IMODE(st[stat.ST_MODE]) | stat.S_IWRITE)
        installShlibLinks(dest, source, env)

    return 0