[Bug go/56431] -lpthread should be added to -lgo

[ro at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56431

Rainer Orth <ro at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ro at gcc dot gnu.org

--- Comment #7 from Rainer Orth <ro at gcc dot gnu.org> ---
I'm seeing the same link error on Linux/x86_64 on mainline when configured with
--disable-shared:

/vol/gcc/bin/gld-2.31:
/var/gcc/regression/trunk/4.17.3-gcc-gas-gld/build/./gcc/libgcc.a(generic-morestack.o):
in function `__morestack_block_signals':
/vol/gcc/src/hg/trunk/local/libgcc/generic-morestack.c:661: undefined reference
to `pthread_sigmask'

linking e.g. test2json.