Unable to build numpy with GCC 4.8.5 #14182
Description
I'm trying to install numpy from source but I'm seeing a lot of C99 errors.
Reproducing code example:
$ python -s setup.py --no-user-cfg build
$ python -s setup.py --no-user-cfg install --prefix=/Users/Adam/spack/opt/spack/darwin-mojave-x86_64/clang-10.0.1-apple/py-numpy-1.17.0-37xrxjmnbitsruc7alrutzpvdil2xhhy --single-version-externally-managed --root=/Error message:
I see hundreds of errors like:
numpy/core/src/npysort/radixsort.c.src: In function 'radixsort_bool':
numpy/core/src/npysort/radixsort.c.src:112:5: error: 'for' loop initial declarations are only allowed in C99 mode
for (npy_intp i = 1; i < num; i++) {
^
numpy/core/src/npysort/radixsort.c.src:112:5: note: use option -std=c99 or -std=gnu99 to compile your code
Numpy/Python version information:
- Linux CentOS 7
- GCC 4.8.5
- Python 3.7.4
- Numpy 1.17.0