For a long time we had our custom override of FindBLAS.cmake to use pkg config and everything was fine... But then upstream changed this to their own PkgConfig call [1]. The problem is now that BLAS_LIBRARIES will be populated with the string "PkgConfig::PKGC_BLAS" instead of a semicolon separated list of actual libraries. Now, this isn't that much of a problem as long as the string is directly passed as a library to a target. But unfortunately, there are a number of packages out there that expect BLAS_LIBRARIES to contain an actual list of libraries. [1] https://gitlab.kitware.com/cmake/cmake/commit/a9c42e3ec09fa9cdf308344d12b0cc8c2e44d905
Reference upstream bug report.
It is not the only problem. https://github.com/gentoo/sci/issues/878 tl;dr CMakeList.txt for cblas-reference and lapack-reference (same source) rely on the variable `BLAS_FOUND` to be returned not just `BLAS_LIBRARIES` to be returned by find_package(blas). But the new FindBLAS.cmake never sets BLAS_FOUND anymore - even so it is documented in the module. There may be other like that out there.
(In reply to François Bissey from comment #2) > It is not the only problem. https://github.com/gentoo/sci/issues/878 > tl;dr > CMakeList.txt for cblas-reference and lapack-reference (same source) rely on > the variable `BLAS_FOUND` to be returned not just `BLAS_LIBRARIES` to be > returned by find_package(blas). But the new FindBLAS.cmake never sets > BLAS_FOUND anymore - even so it is documented in the module. > There may be other like that out there. I can confirm that issue for cmake-3.12.1, while cmake-3.11.4-r1 seems to work fine. Rolf, are you aware of the problem? I could not find an upstream report for 3.12.
See https://gitlab.kitware.com/cmake/cmake/merge_requests/2631 for merge request I just wrote to restore BLAS_FOUND broken since [1]. Feel free to consider adding this as a distro-level patch in a revbump for now. [1] https://gitlab.kitware.com/cmake/cmake/commit/92ac721a44bcae43ed9ad33d4d0f
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=160c412e439e3106ffb542beefa123816c72ec6d commit 160c412e439e3106ffb542beefa123816c72ec6d Author: Lars Wendler <polynomial-c@gentoo.org> AuthorDate: 2018-11-21 09:34:55 +0000 Commit: Lars Wendler <polynomial-c@gentoo.org> CommitDate: 2018-11-21 09:35:12 +0000 dev-util/cmake: Bump to version 3.13.0. Removed old. Closes: https://bugs.gentoo.org/653936 Package-Manager: Portage-2.3.52, Repoman-2.3.12 Signed-off-by: Lars Wendler <polynomial-c@gentoo.org> dev-util/cmake/Manifest | 2 +- dev-util/cmake/{cmake-3.13.0_rc3.ebuild => cmake-3.13.0.ebuild} | 0 2 files changed, 1 insertion(+), 1 deletion(-)
*** Bug 666528 has been marked as a duplicate of this bug. ***
