Unable to emerge cppgir on clang/musl profile. I believe this has to do with clang/libc++ lacking <experimental/filesystem>, but that is not the only error message seen. Reproducible: Always Steps to Reproduce: 1. musl/clang(16) profile 2. emerge -1 dev-cpp/cppgir Actual Results: Clang fails with multiple errors. Expected Results: Build succeeds See attachment for build.log and emerge --info
Created attachment 864743 [details] build.log + emerge --info
I can reproduce this issue. FreeBSD seems to fix this issue by setting the C++ standard to C++17 and replacing #include <experimental/filesystem> with just #include <filesystem>. https://cgit.freebsd.org/ports/tree/net-im/telegram-desktop/files/patch-cmake_external_glib_cppgir_CMakeLists.txt https://cgit.freebsd.org/ports/tree/net-im/telegram-desktop/files/patch-cmake_external_glib_cppgir_tools_genns.cpp Another issue that will show up with Clang 17 is "error: too few template arguments for class template 'map'", which can be fixed by #include <map> in a few files: https://cgit.freebsd.org/ports/tree/net-im/telegram-desktop/files
Yeah, I helped OP with this on IRC but I don't remember if we got things building or not (I'd suggested both of those things). The issue is that cppgir (for the experimental/filesystem) bit hasn't tested I guess w/ -std=c++17 which has <filesystem> proper.
And there's no way to force an older standard so <experimental/filesystem> is valid? Or has it fully been removed from libc++?
(In reply to Esteve Varela Colominas from comment #4) > And there's no way to force an older standard so <experimental/filesystem> > is valid? Or has it fully been removed from libc++? You can explicitly pass -std=c++14 or -std=gnu++14 if you want.
(In reply to Sam James from comment #3) > Yeah, I helped OP with this on IRC but I don't remember if we got things > building or not (I'd suggested both of those things). > > The issue is that cppgir (for the experimental/filesystem) bit hasn't tested > I guess w/ -std=c++17 which has <filesystem> proper. For me, applying the FreeBSD patches worked (both cppgir and >=telegram-desktop-4.8.3 build and run successfully). (In reply to Esteve Varela Colominas from comment #4) > And there's no way to force an older standard so <experimental/filesystem> > is valid? Or has it fully been removed from libc++? It's been fully removed. The CMakeLists already forces C++14.
Thanks, Carlos. That saves me a lot of time in setting up and testing a libc++ environment. I'll add these patches to the pending cppgir PR.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=1d9d862a0d6c3432fb976c665077a36ce453a789 commit 1d9d862a0d6c3432fb976c665077a36ce453a789 Author: Esteve Varela Colominas <esteve.varela@gmail.com> AuthorDate: 2023-06-29 13:00:37 +0000 Commit: Joonas Niilola <juippis@gentoo.org> CommitDate: 2023-07-21 06:31:31 +0000 dev-cpp/cppgir: Bump to 0_p20230625 Upstreamed most patches, fixed libcxx 16 Closes: https://bugs.gentoo.org/909316 Thanks-to: James McGeehan IV <jfmfour22@gmail.com> Thanks-to: Carlos <carana2099@gmail.com> Signed-off-by: Esteve Varela Colominas <esteve.varela@gmail.com> Signed-off-by: Joonas Niilola <juippis@gentoo.org> dev-cpp/cppgir/Manifest | 1 + dev-cpp/cppgir/cppgir-0_p20230625.ebuild | 48 +++++++++++++++++++ .../files/cppgir-0_p20230625-fix-libcxx-16.patch | 54 ++++++++++++++++++++++ 3 files changed, 103 insertions(+)
