Have you by any chance set HPX_FILESYSTEM_WITH_BOOST_FILESYSTEM_COMPATIBILITY=OFF or HPX_WITH_CXX17_FILESYSTEM=ON? What does the CMake configuration report for those two variables? GCC 7 does not support std::filesystem by default (I think you can still get it by expliclity linking and/or including experimental/filesystem), so HPX_WITH_CXX17_FILESYSTEM should be detected to OFF. If it's not could I ask you to try a clean build directory and see if the problem stays? In either case we may have wonky detection or handling of cache variables.
Mikael ________________________________ From: hpx-users-boun...@stellar-group.org <hpx-users-boun...@stellar-group.org> on behalf of Simberg Mikael <simbe...@cscs.ch> Sent: Wednesday, April 8, 2020 3:07:12 PM To: hpx-users@stellar-group.org Subject: Re: [hpx-users] Error specifying CXX standard when building project with HPX Thanks Kor, I'll have a look at that. Keep an eye on the same PR. I'll push changes over there. ________________________________ From: hpx-users-boun...@stellar-group.org <hpx-users-boun...@stellar-group.org> on behalf of Kor de Jong <k.dejo...@uu.nl> Sent: Wednesday, April 8, 2020 2:37:55 PM To: hpx-users@stellar-group.org Subject: Re: [hpx-users] Error specifying CXX standard when building project with HPX Hi Mikael, On 4/8/20 2:25 PM, Simberg Mikael wrote: > This is a silly bug on master. Sorry about that. Could you check that > https://github.com/STEllAR-GROUP/hpx/pull/4504 fixes that for you? Note > that we may still undeprecate the HPX_WITH_CXXAB options, I haven't yet > decided if we'll keep CMAKE_CXX_STANDARD as the official way to set the > standard. Just to clarify, did you get that error also just setting > HPX_WITH_CXX17=ON? I tried the fix and configuration succeeds now, but it results in std::filesystem not being found. hpx-src/libs/filesystem/include/hpx/filesystem.hpp:23:10: fatal error: filesystem: No such file or directory #include <filesystem> ^~~~~~~~~~~~ compilation terminated. Setting only HPX_WITH_CXX17=ON results in the same error. Kor _______________________________________________ hpx-users mailing list hpx-users@stellar-group.org https://mail.cct.lsu.edu/mailman/listinfo/hpx-users
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