Created attachment 233722 [details] fix build with libc++ Fix build with apple-clang libc++ doesn't implement any concepts yet, use variable templates instead. https://github.com/danvratil/qcoro/commit/b4abc587410320408c8f781061c503f4f3e78b19
This one is a little peculiar, because (a) we're not Apple Clang (b) the relevant concepts can be found in the clang headers on FreeBSD. Sure, this is an upstream commit, but our clang deals with concepts fine: ``` [adridg@beastie /tmp]$ c++ -std=c++20 t.cc t.cc:14:3: error: no matching function for call to 'then' then(1); ^~~~ t.cc:5:6: note: candidate template ignored: constraints not satisfied [with T = int] auto then(T && c) ^ t.cc:4:16: note: because 'int' does not satisfy 'invocable' requires (std::invocable<T>) ``` So the actual build failure should be examined more closely. Maybe 12.3 has an older clang?
(In reply to Adriaan de Groot from comment #1) I agreed you points. but this patch fixes my build on 13.0 amd64. Also, It's a upstream fix, it will be in the source in next release.
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/ports/commit/?id=e58af116e1038fcb3eb4db089458136a0bd5848d commit e58af116e1038fcb3eb4db089458136a0bd5848d Author: Adriaan de Groot <adridg@FreeBSD.org> AuthorDate: 2022-05-05 10:01:32 +0000 Commit: Adriaan de Groot <adridg@FreeBSD.org> CommitDate: 2022-05-05 10:01:32 +0000 devel/qcoro: fix build on 13.0 Fetch an upstream patch that fixes the build for "Apple Clang". While here, drop the "broken-on-12", at least so the cluster tries to build it on 12 and we can see (again) what's left to fix. PR: 263775 Reported by: Eric Camachat Obtained from: Eric Camachat devel/qcoro/Makefile | 4 +++- devel/qcoro/distinfo | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-)