def waf_preconfigure(d):
    import subprocess
    subsrcdir = d.getVar('S')
    python = d.getVar('WAF_PYTHON')
    wafbin = os.path.join(subsrcdir, 'waf')
    try:
        result = subprocess.check_output([python, wafbin, '--version'], cwd=subsrcdir, stderr=subprocess.STDOUT)
        # Output looks like:
        #  # output from lower modules (e.g. warnings, ...)
        #  waf X.Y.Z ...
        # So, look for the line starting with "waf "
        version = None
        for line in result.decode('utf-8').split("\n"):
            if line.startswith("waf "):
                version = line.split()[1]
                break

        if not version or not bb.utils.is_semver(version):
            bb.warn("Unable to parse \"waf --version\" output. Assuming waf version without bindir/libdir support.")
            bb.warn("waf·--version·output = \n%s" % result.decode('utf-8'))
        elif bb.utils.vercmp_string_op(version, "1.8.7", ">="):
            bb.note("waf version is high enough to add --bindir and --libdir")
            d.setVar("WAF_EXTRA_CONF", "--bindir=${bindir} --libdir=${libdir}")
    except subprocess.CalledProcessError as e:
        bb.warn("Unable to execute waf --version, exit code %d. Assuming waf version without bindir/libdir support." % e.returncode)
    except FileNotFoundError:
        bb.fatal("waf does not exist in %s" % subsrcdir)

waf_preconfigure(d)