Hi there, While building apr-1.7.0 on 32-bit PowerPC, we encountered the following error:
/usr/lib/gcc/powerpc-foxkit-linux-musl/8.3.0/../../../../powerpc-foxkit-linux-musl/bin/ld: ../.libs/libapr-1.so: undefined reference to `__sync_val_compare_and_swap_8' /usr/lib/gcc/powerpc-foxkit-linux-musl/8.3.0/../../../../powerpc-foxkit-linux-musl/bin/ld: ../.libs/libapr-1.so: undefined reference to `__sync_sub_and_fetch_8' /usr/lib/gcc/powerpc-foxkit-linux-musl/8.3.0/../../../../powerpc-foxkit-linux-musl/bin/ld: ../.libs/libapr-1.so: undefined reference to `__sync_lock_test_and_set_8' /usr/lib/gcc/powerpc-foxkit-linux-musl/8.3.0/../../../../powerpc-foxkit-linux-musl/bin/ld: ../.libs/libapr-1.so: undefined reference to `__sync_fetch_and_sub_8' /usr/lib/gcc/powerpc-foxkit-linux-musl/8.3.0/../../../../powerpc-foxkit-linux-musl/bin/ld: ../.libs/libapr-1.so: undefined reference to `__sync_fetch_and_add_8' This was while building the globalmutexchild test. I bisected the failure and found it began at r1841109, when 64-bit atomic support was added. I'm not too familiar with autoconf, but it seems like the ap_cv_atomic_builtins test in configure.in may need to have 64-bit atomics added. Alternatively, it may be possible around line 660 to set force_generic_atomics to yes on 32-bit PowerPC systems. I was not able to make this work myself using either "powerpc" nor "ppc" for the $host_cpu case, but that may be due to my lack of experience with autoconf. Thank you for your consideration. Best to you and yours, --arw -- A. Wilcox (awilfox) Project Lead, Adélie Linux https://www.adelielinux.org
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