On Tue, Apr 18, 2023 at 16:07:45 +0200, Florian Weimer wrote: > Gentoo has been fixing various packages for building with Clang, which > covers a superset of the issues that need to be addressed: > > [TRACKER] Support LLVM/Clang as alternative system compiler > <https://bugs.gentoo.org/showdependencytree.cgi?id=408963&hide_resolved=0> > > IIRC, Gentoo has its own mechanism to detect silent build breakage, but > I think it's mostly focused on autoconf, so it's less comprehensive, and > also fixes the stuff that is actually relevant to the distribution. >
For Gentoo, I wrote (with some help from others) this QA check [1] which Portage uses to scan Autoconf, CMake, and Meson config logs for implicit function declarations. It's inspired by a similar bit of code from the Macports folks [2] and written with both Clang and GCC in mind. It should be possible to adapt for use by others if you feed it the right dirs and replace a few functions (`has` and `eqa*` OTTOMH) since nothing about the core logic is Portage-specific. Although not so much for silent failures, but maybe still useful for someone, there's also this QA check [3] which is used to detect other warnings at build-time. - Oskari [1]: https://gitweb.gentoo.org/proj/portage.git/tree/bin/install-qa-check.d/90config-impl-decl [2]: https://github.com/macports/macports-base/blob/15270571ab178ddff693fbd722163fe1d638ed55/src/port1.0/portconfigure.tcl#L1853 [3]: https://gitweb.gentoo.org/proj/portage.git/tree/bin/install-qa-check.d/90gcc-warnings
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