bug#68229: go.powerpc64le-linux 1.14.15 fails test suite

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hello,

cuirass@gnu.org (Cuirass) writes:

> <p>The build <b>go.powerpc64le-linux</b> for specification <b>master</b> is broken. You can find the detailed information about this build <a
> href="https://ci.guix.gnu.org/build/3139760/details">here</a>.</p>
>
> https://ci.guix.gnu.org/build/3139760/details

The test failure is:

--8<---------------cut here---------------start------------->8---
--- FAIL: TestScript (0.00s)
    --- FAIL: TestScript/vendor_complex (2.07s)
        script_test.go:193: 
            # smoke test for complex build configuration (1.990s)
            > go build -o complex.exe complex
            > [exec:gccgo] go build -compiler=gccgo -o complex.exe complex
            [stderr]
            # complex
            gccgo: error: unrecognized command-line option '-rpath=/gnu/store/qj6cnccz6vsffqa32rviw4zaqgh7xd6q-gcc-11.3.0-lib/lib'
            [exit status 2]
            FAIL: testdata/script/vendor_complex.txt:5: unexpected command failure
            
FAIL
FAIL	cmd/go	46.068s
--8<---------------cut here---------------end--------------->8---

I don't see an obvious relationship with the recent commit touching
gccgo-12, but I'm CC'ing its author in case it could be.

-- 
Thanks,
Maxim