[Bug other/42980] GCC parallel "make install" failures

[jsm28 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42980

Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jsm28 at gcc dot gnu.org

--- Comment #18 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
I've observed the same problem with my glibc buildbot, where installing GCC
(GCC 6 branch) with parallel make tried to install omp.h in the same directory
from more than one multilib in parallel.

install: cannot create regular file
'/scratch/jmyers/glibc-bot/install/compilers/mips64el-linux-gnu-nan2008/lib/gcc/mips64el-glibc-linux-gnu/6.3.1/include/omp.h':
File exists
Makefile:849: recipe for target 'install-nodist_libsubincludeHEADERS' failed
make[9]: *** [install-nodist_libsubincludeHEADERS] Error 1
make[9]: Leaving directory
'/scratch/jmyers/glibc-bot/build/compilers/mips64el-linux-gnu-nan2008/gcc/mips64el-glibc-linux-gnu/32/libgomp'
Makefile:1040: recipe for target 'install-am' failed
make[8]: *** [install-am] Error 2