Dear all, Just a heads-up that Folly and packages built against it are mostly* switched to build using Clang for the time being, when compiled on Fedora 36 and above. * the exception is watchman, which needs some work to get the latest version to build because upstream started porting some functionality to Rust, and wdt, which was archived externally, and now unarchived so we need to sort through half a year's worth of internal changes Internally, Meta uses Clang, so Fedora's GCC-built packages have been useful for surfacing GCC-specific issues, and we still plan to switch back to GCC in a future release once issues compiling it with GCC 11 and 12 are resolved. (GCC 11 issue: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104008 ; GCC 12 issue will be filed soon now that I've managed to rebuild the entire stack) F37: https://bodhi.fedoraproject.org/updates/FEDORA-2022-737d681400 F36: https://bodhi.fedoraproject.org/updates/FEDORA-2022-5852540ea0 The specs of the packages switched to Clang can be used to easily rebuild with GCC, per the packaging guidelines, using `--without toolchain_clang`, and I plan on doing this to sort out issues. As a bonus, Folly's test suite which we have had to disable when building with GCC builds and runs fine with Clang on x86_64, and we're using this opportunity to start fixing architecture-specific assumptions causing test compile and runtime failures on non-Intel and non-64-bit architectures. We've also onboarded Folly and fb303 in PackIt: - https://github.com/facebook/folly/blob/main/.packit.yaml - https://github.com/facebook/fb303/blob/main/.packit.yaml so every tagged release will trigger CI and we get faster notice of any regression, esp for non-x86_64 which we don't run in-house. If there's any package I miss that also needs to be rebuilt, please let me know, and if the switch triggers some issue, let me know too. Thanks, -- Michel Alexandre Salim identities: https://keyoxide.org/5dce2e7e9c3b1cffd335c1d78b229d2f7ccc04f2
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