I have a EPREFIX installation and starting with ckang 19.1.x, configure of emerge fails with: [...] -- Looking for dlopen in dl - found -- Looking for dladdr -- Looking for dladdr - found CMake Error at CMakeLists.txt:211 (message): GCC_INSTALL_PREFIX is deprecated and will be removed. Use configuration files (https://clang.llvm.org/docs/UsersManual.html#configuration-files)to specify the default --gcc-install-dir= or --gcc-triple=. --gcc-toolchain= is discouraged. See https://github.com/llvm/llvm-project/pull/77537 for detail. This is due to the usage of GCC_INSTALL_PREFIX in sys-devel/clang/clang-19.1.0_rc4.ebuild: if [[ -n ${EPREFIX} ]]; then mycmakeargs+=( -DGCC_INSTALL_PREFIX="${EPREFIX}/usr" ) fi Stop gap solution for is to use: if [[ -n ${EPREFIX} ]]; then mycmakeargs+=( -DGCC_INSTALL_PREFIX="${EPREFIX}/usr" -DUSE_DEPRECATED_GCC_INSTALL_PREFIX=1 ) fi This emerges fine for, but I understand clang will remove support soon entirely, maybe a better solution needs to be found.
We actually should have --gcc-install-dir already setup so we might be able to drop it entirely.
Sure, this was the solution I was looking for. Let me know when I can test it. Is there another bug report open for it?
*** Bug 939841 has been marked as a duplicate of this bug. ***
You should be able to just delete that if block you pasted.
Just upgraded to sys-devel/clang-runtime-19.1.0 and removed the statement before. I can confirm that it works without the statement, it should be removed.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fe0050ea40377dcc2283d287e5ec57cb729b0ea4 commit fe0050ea40377dcc2283d287e5ec57cb729b0ea4 Author: Sam James <sam@gentoo.org> AuthorDate: 2024-09-30 05:25:39 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2024-09-30 05:25:39 +0000 sys-devel/clang: stop setting GCC_INSTALL_PREFIX for prefix Clang 19 deprecates the GCC_INSTALL_PREFIX CMake option. We now handle this via config files installed by gcc-config. If there's any remaining issues for Prefix, it should be handled over there or in sys-devel/clang-common. Closes: https://bugs.gentoo.org/939816 Signed-off-by: Sam James <sam@gentoo.org> sys-devel/clang/clang-19.1.0.ebuild | 6 ------ sys-devel/clang/clang-20.0.0.9999.ebuild | 6 ------ sys-devel/clang/clang-20.0.0_pre20240917.ebuild | 6 ------ sys-devel/clang/clang-20.0.0_pre20240924.ebuild | 6 ------ 4 files changed, 24 deletions(-)
