Mirror of github.com/kraj/meta-clang.git https://git.enea.com/cgit/linux/meta-clang.git/atom?h=wrynose 2025-12-07T05:21:34+00:00 2025-12-07T05:21:34+00:00 mark.yang mark.yang@lge.com 2025-11-07T04:40:46+00:00 urn:sha1:bf7ba60c794d0f670b502678660a313792243566 Referring to lto.inc in openembedded-core, when using lto, the LTO variable is added to SELECTED_OPTIMIZATION. In this case, with the clang toolchain, -fuse-ld=lld is added when using -flto, but the -fuse-ld=lld option is sufficient as a linker flag. If -fuse-ld=lld is present in CFLAGS, an unused-command-line-argument warning occurs. In recipes that treat this warning as an error, the build fails. aarch64-yoe-linux-clang: error: argument unused during compilation: '-fuse-ld=lld' [-Werror,-Wunused-command-line-argument] See more details https://errors.yoctoproject.org/Errors/Details/886599 Signed-off-by: mark.yang <mark.yang@lge.com> 2025-12-07T05:21:34+00:00 mark.yang mark.yang@lge.com 2025-11-07T02:46:20+00:00 urn:sha1:8959e1255311d10a19e13cc5967951bde3f0e343 When enabling LTO in the clang toolchain, .o files are generated in LLVM IR bitcode format instead of ELF format. In this case, dwarfsrcfiles fails in do_package. See more details at: https://errors.yoctoproject.org/Errors/Details/886597 ``` dwarfsrcfiles: TOPDIR/build/tmp/work/cortexa72-yoe-linux/libcxx/21.1.4/package/usr/lib/libc++experimental.a: not a valid ELF file ``` As already discussed on the mailing list https://www.mail-archive.com/yocto@lists.yoctoproject.org/msg15501.html, setting `INHIBIT_PACKAGE_DEBUG_SPLIT = "1"` disables debug splitting. It is not desirable to disable debug splitting just to avoid the dwarfsrcfiles error. A simple solution, as Khem Raj suggested in the lto.inc file of openembedded-core, is to add the `-ffat-lto-objects` flag to the LTO settings. This keeps both IR bitcode and ELF format, preventing the error. Signed-off-by: mark.yang <mark.yang@lge.com> 2025-08-06T16:28:18+00:00 Khem Raj raj.khem@gmail.com 2025-08-01T05:09:05+00:00 urn:sha1:006349d85aeb8ac71585a9939b9a6590e788a341 Signed-off-by: Khem Raj <raj.khem@gmail.com> 2025-08-06T16:28:18+00:00 Khem Raj raj.khem@gmail.com 2025-08-01T05:07:00+00:00 urn:sha1:e37110b647b4bff062b59ce4c249022ab729c200 clang runtime recipe set them rightly in core Signed-off-by: Khem Raj <raj.khem@gmail.com> 2025-08-06T16:28:18+00:00 Khem Raj raj.khem@gmail.com 2025-08-01T05:04:36+00:00 urn:sha1:f512c378408742a9446b72d8d29da35dd40f02dd Signed-off-by: Khem Raj <raj.khem@gmail.com> 2025-08-06T16:28:18+00:00 Khem Raj raj.khem@gmail.com 2025-07-29T18:16:12+00:00 urn:sha1:a13b00b3646c4f63443f51ca6f9f99931e42f271 This is better fixed in recipes if needed now that clang is a core recipe. Signed-off-by: Khem Raj <raj.khem@gmail.com> 2025-07-30T18:15:32+00:00 Khem Raj raj.khem@gmail.com 2025-07-29T18:06:36+00:00 urn:sha1:3a073612b94f8ba3636b040faca1d12fc1788599 This is gone from OE-core so good riddance Signed-off-by: Khem Raj <raj.khem@gmail.com> 2025-07-28T15:23:37+00:00 Khem Raj raj.khem@gmail.com 2025-07-23T00:19:29+00:00 urn:sha1:b2933c6e6e9c1245ca1d83c7c49fa81a18dcef51 These are not supported by clang, but now they are handled in core tune files. Signed-off-by: Khem Raj <raj.khem@gmail.com> 2025-07-28T15:23:37+00:00 Khem Raj raj.khem@gmail.com 2025-07-20T23:33:41+00:00 urn:sha1:f48f0f70e9d9db6396c244e764ab18e9483ea985 This should be part of default tune infra in core Signed-off-by: Khem Raj <raj.khem@gmail.com> 2025-07-28T15:23:37+00:00 Khem Raj raj.khem@gmail.com 2025-07-19T04:48:29+00:00 urn:sha1:8912317f11ed15d48f91d3b184c155a32821a6f0 Its moved into klibc.bbclass in meta-initramfs Signed-off-by: Khem Raj <raj.khem@gmail.com>