I tested matplotlib built with numpy 0.17 0.19 0.21. each time I got the segfault.
another difference was the gcc compiler. So I switched to gcc-10 (sid_mips64el-dchroot)picca@eller:~/matplotlib$ CC=gcc-10 python3 setup.py build if failed with this error lto1: fatal error: bytecode stream in file ‘build/temp.linux-mips64-3.9/matplotlib.backends._backend_agg/extern/agg24-svn/src/agg_bezier_arc.o’ generated with LTO version 9.4 instead of the expected 11.2 So I unactivated lto with this CFLAGS="-fno-lto" CC=gcc-10 python3 setup.py build at the end it seems that is does not segfault :) (sid_mips64el-dchroot)picca@eller:~/matplotlib/build/lib.linux-mips64-3.9$ ../../../test.py Segmentation fault (sid_mips64el-dchroot)picca@eller:~/matplotlib/build/lib.linux-mips64-3.9$ PYTHONPATH=. ../../../test.py (sid_mips64el-dchroot)picca@eller:~/matplotlib/build/lib.linux-mips64-3.9$ ls matplotlib mpl_toolkits pylab.py toto.png Cheers
