Re: [golang-dev] [PATCH 3/4] libgo/test: Fix compilation for build sysroot

[Ian Lance Taylor <iant@golang.org>]

On Mon, Nov 11, 2019 at 10:12 AM Maciej W. Rozycki <macro@wdc.com> wrote:
>
> Fix a problem with the libgo testsuite using a method to determine the
> compiler to use resulting in the tool being different from one the
> library has been built with, and causing a catastrophic failure from the
> lack of a suitable `--sysroot=' option where the `--with-build-sysroot='
> configuration option has been used to build the compiler resulting in
> the inability to link executables.
>
> Address this problem by providing a DejaGNU configuration file defining
> the compiler to use, via the GOC_UNDER_TEST TCL variable, set from $GOC
> by autoconf, which will have all the required options set for the target
> compiler to build executables in the environment configured, removing
> failures like:
>
> .../bin/riscv64-linux-gnu-ld: cannot find crt1.o: No such file or directory
> .../bin/riscv64-linux-gnu-ld: cannot find -lm
> .../bin/riscv64-linux-gnu-ld: cannot find -lc
> collect2: error: ld returned 1 exit status
> compiler exited with status 1
>
> No summary comparison, because the libgo testsuite does not provide one
> in this configuration for some reason, however this change improves
> overall test results for the `riscv64-linux-gnu' target (here with the
> `x86_64-linux-gnu' host and RISC-V QEMU in the Linux user emulation mode
> as the target board) from 0 PASSes and 159 FAILs to 133 PASSes and 26
> FAILs.
>
>         libgo/
>         * configure.ac: Add testsuite/libgo-test-support.exp to output
>         files.
>         * configure: Regenerate.
>         * testsuite/libgo-test-support.exp.in: New file.
>         * testsuite/Makefile.am (EXTRA_DEJAGNU_SITE_CONFIG): New
>         variable.
>         * testsuite/Makefile.in: Regenerate.
>         * testsuite/lib/libgo.exp: Don't override GOC_UNDER_TEST
>         previously set.

Thanks.

Committed to mainline.

Ian