Package: musl Version: 1.2.2-1 Severity: normal X-Debbugs-Cc: j...@joshtriplett.org
aarch64 gcc appears to default to -moutline-atomics, which causes gcc to emit references to function symbols for atomic operations rather than inlining the corresponding instruction sequences. However, musl doesn't appear to provide the corresponding function symbols. This results in errors like these (from compiling libgit2): attrcache.c:(.text.git_attr_cache__get+0x144): undefined reference to `__aarch64_swp8_acq_rel' attrcache.c:(.text.git_attr_cache__get+0x158): undefined reference to `__aarch64_ldadd4_acq_rel' attrcache.c:(.text.git_attr_cache__get+0x168): undefined reference to `__aarch64_swp8_acq_rel' attrcache.c:(.text.git_attr_cache__get+0x180): undefined reference to `__aarch64_swp8_acq_rel' attrcache.c:(.text.git_attr_cache__get+0x224): undefined reference to `__aarch64_cas8_acq_rel' attrcache.c:(.text.git_attr_cache__get+0x248): undefined reference to `__aarch64_swp8_acq_rel' Would it make sense for the aarch64 musl-gcc wrapper to pass -mno-outline-atomics, which resolves this problem and makes gcc no longer emit references to those symbols?
