re: toolchain/53960: sparc64 fails to build

[matthew green <mrg%eterna.com.au@localhost>]

> Trying to build sparc64 after the switch to gcc 7 fails for me:
> 
> creating msgconv
> --- msgmerge ---
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_destroy_lock'
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_test_nest_lock'
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_set_lock'
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_destroy_nest_lock'
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_init_nest_lock'
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_test_lock'
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_unset_lock'
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_init_lock'
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_set_nest_lock'
> ld: /usr/lib/libgomp.so: undefined reference to `gomp_ialias_omp_unset_nest_lock'
> *** [msgmerge] Error code 1
> nbmake[11]: stopped in /work/obj/sparc64/work/src/tools/gettext/build/gettext-tools/src
> 
> I removed obj and destdir before the build.

odd.  why is gettext looking for libgomp?  i see that there is 
build issue in libgomp like the above (a simple input file
using "gcc -fopenmp test.c" will show it), but i'm more curious
why gettext is wanting it!

i haven't seen this in my builds and i've run gcc7 hosted builds
on amd64 and my sparc64 build is well beyond tools.

in any case, i'm looking at libgomp -- there seems to be some
issue with its internal renaming.  the above should end up
present, perhaps with different names.  still not sure what
exactly is happening, but perhaps simply enabling symver for
this library will fix it (the above symbols are handled
differently for systems without GNU sym ver support, and at
the moment the configury chooses not us.)


.mrg.