XL 13.1.4 incorrect C++11 flag

[tomdeakin]

If I setup Kokkos with the IBM XL 13.1.4 compiler as follows,
CXX=xlc++ ../../generate_makefile.bash --prefix=$PWD/.. --with-openmp --arch=Power8
it sets --std=c++11 in Makefile.kokkos.

This causes any user code to fail to build with warning: 1501-257 Option std=c++11 is not recognized. Option will be ignored.

The xlc++ --help page says the flag should be -std=c++11.

This is using Kokkos at the 2.02.01 tag.

[nmhamster]

I think you should do --compiler=xlc++ on the generate_makefike.sh

[tomdeakin]

Thanks, that now works OK. If I have CXX=xlc++ set in my environment though, shouldn't the build work out I'm using xlc++ for me?

[nmhamster]

Why would we do that ;-)! It's a bug. Thanks for reporting it.

[crtrott]

Ok found the issue. The -qversion option spits out a different format, so our makefile doesn't identify the compiler correctly.