https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: net-irc/ninja-1.5.9_pre14-r2 fails to compile (lto). Discovered on: amd64 (internal ref: lto_tinderbox) NOTE: This machine uses lto with CFLAGS=-flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing Here is a bit of explanation: -Werror=lto-type-mismatch: User to find possible runtime issues in packages. It likely means the package is unsafe to build & use with LTO. For projects using the same identifier but with different types across different files, they must be fixed to be consistent across the codebase. -Werror=odr: Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. C++ code must comply with the One Definition Rule (ODR) - see https://en.cppreference.com/w/cpp/language/definition#One_Definition_Rule. -Werror=strict-aliasing: Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. Workarounds: - If upstream is friendly and still active, file a bug upstream. For emulators, codecs, games, or multimedia packages, it may be worth just applying a workaround instead, as upstreams sometimes aren't receptive to these bugs (VALID FOR ALL). - Use the new 'filter-lto' from flag-o-matic.eclass as it's likely to be unsafe with LTO (VALID FOR lto-type-mismatch - odr). - Fix it yourself if interested, of course (VALID FOR ALL). - Append-flags -fno-strict-aliasing (VALID FOR strict-aliasing). - Use memcpy() but a union is sometimes suitable too (VALID FOR strict-aliasing). - -fstrict-aliasing is implied by -O2, so this must be addressed in some form (VALID FOR strict-aliasing). See also: https://marc.info/?l=gentoo-dev&m=165639574126280&w=2
Created attachment 794951 [details] build.log build log and emerge --info
long-dead upstream, doesn't build w/ modern c (configure), autoreconf fails w/ autoconf-2.72, ...
For context, trying to eautoreconf successfully produces a script that then does this: checking for hpux version... no checking for ultrix... no checking for sequent/ptx... ./configure: 4401: Syntax error: "}" unexpected (expecting "fi") configure.in is... not worth fixing. ;)
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=02752fdc603d04f173f3e3afc76436c8f8f60b88 commit 02752fdc603d04f173f3e3afc76436c8f8f60b88 Author: Eli Schwartz <eschwartz93@gmail.com> AuthorDate: 2024-05-08 02:01:28 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2024-05-08 19:19:29 +0000 package.mask: Last rite net-irc/ninja Bug: https://bugs.gentoo.org/731180 Bug: https://bugs.gentoo.org/861461 Bug: https://bugs.gentoo.org/888577 Bug: https://bugs.gentoo.org/889930 Bug: https://bugs.gentoo.org/900084 Signed-off-by: Eli Schwartz <eschwartz93@gmail.com> Signed-off-by: Sam James <sam@gentoo.org> profiles/package.mask | 7 +++++++ 1 file changed, 7 insertions(+)
