15988 2025-10-02 12:53:13 +0000 Non-deterministic package_qa in allarch+clang combination 2026-05-22 12:02:51 +0000 1 1 7 Build System, Metadata & Runtime OE-Core core 5.2 x86 Multiple NEW Medium normal 6.1 1 ross.burton ross.burton meta.mr.watcher meta.watcher randy.macleod --- --- No (bug/feature does not impact docs) oldest_to_newest 102863 0 ross.burton 2025-10-02 12:53:13 +0000 In builds of linux-firmware when TOOLCHAIN=clang, the package_qa is non-deterministic. The ldflags test in package_qa_hash_style() uses elf.run_objdump() which calls ${OBJDUMP}, but notably just returns the empty string if objdump fails with an error. With TOOLCHAIN=clang, OBJDUMP is "${HOST_PREFIX}llvm-objdump". The package_qa task depends on POPULATESYSROOTDEPS which for target builds is "virtual/cross-binutils:do_populate_sysroot", which is not where llvm-objdump is. Several issues jump out at me: 1) run_objdump() should likely _at least_ warn if it fails, if not fail 2) clang.bbclass should extend POPULATESYSROOTDEPS to include llvm-native. 102875 1 ross.burton 2025-10-02 15:19:32 +0000 3) allarch clears POPULATESYSROOTDEPS 102877 2 ross.burton 2025-10-02 15:30:28 +0000 I wish bugzilla let you edit comments. Re (3) we can't not unset POPULATESYSROOTDEPS because otherwise it depends on cross-binutils-allarch, which doesn't exist. A horrible but interesting solution would be to use binutils-native as a provider of cross-binutils-allarch. Another approach might be to actually build both binutils-native (strip, etc) and binutils-cross (ld and anything else that needs to know about sysroots) which means we can be more specific about dependencies.