BUG: getauxval declaration invalid, causes compile issues #21386
Description
Describe the issue:
Trying to install numpy, (main branch) on FreeBSD/aarch64 (aka arm64), using clang, and I get the following compile error:
INFO: cc: numpy/core/src/common/npy_argparse.c [133/1808] INFO: cc: numpy/core/src/common/npy_hashtable.c INFO: cc: numpy/core/src/common/npy_longdouble.c INFO: cc: numpy/core/src/common/ucsnarrow.c INFO: cc: numpy/core/src/common/ufunc_override.c INFO: cc: numpy/core/src/common/numpyos.c INFO: cc: build/src.freebsd-14.0-CURRENT-arm64-3.9/numpy/core/src/common/npy_cpu_features.c
numpy/core/src/common/npy_cpu_features.c.src:586:22: error: static declaration of 'getauxval' follows non-static declaration
static unsigned long getauxval(unsigned long k)
^
numpy/core/src/common/npy_cpu_features.c.src:582:37: note: previous declaration is here
__attribute__((weak)) unsigned long getauxval(unsigned long); // linker should handle it
^
1 error generated.
It is very clear that this is the case by code inspection:
https://github.com/numpy/numpy/blob/main/numpy/core/src/common/npy_cpu_features.c.src#L582
Reproduce the code example:
# I can't install numpy so there is no code to reproduce.Error message:
# see above.NumPy/Python version information:
Main branch as of a few minutes before I filed this issue, the install was attempted via:
pip install git+https://github.com/numpy/numpy.git
Python version:
Python 3.9.12 (main, Mar 27 2022, 01:58:04)
[Clang 13.0.0 (git@github.com:llvm/llvm-project.git llvmorg-13.0.0-0-gd7b669b3a on freebsd14
FreeBSD version info:
FreeBSD generic 14.0-CURRENT FreeBSD 14.0-CURRENT #0 main-n254105-d53927b0bae: Thu Mar 31 09:26:31 UTC 2022 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC arm64