Created attachment 8126 [details] log of numpy compilation When building for RaspberryPi 3 with 64bits from buildroot-2019.05 I get the attached error. It did not happen with 32bits.
Which GCC version? Mind to share your config/defconfig? There is one more reference of the same compile failure on the web, see [1]. numpy/core/src/npymath/npy_math_internal.h.src:482:12: internal compiler error: Segmentation fault return @kind@@c@(x, y); ^~~~~~~~~~~~~~~ Stating 'Bug does not occur when using -O0 on GCC 8.2.0 and does not occur at all with GCC 9.1.0', mind to try a different compiler and/or optimization setting? Regards, Peter [1] https://github.com/numpy/numpy/issues/13622
Created attachment 8136 [details] Config used when encountering numpy segfault Attached my .config (compressed because too large for bugzilla). I started from configs/raspberry3_64_defconfig and added the stuff I need. About GCC version I am not sure which one you want... So I have these: $ /home/buildroot/buildroot201907numpySegFault/output/host/bin/aarch64-buildroot-linux-uclibc-gcc --version aarch64-buildroot-linux-uclibc-gcc.br_real (Buildroot 2019.05) 7.4.0 Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ gcc --version gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516 Copyright (C) 2016 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Let me know if you want to know about another one...
Thanks for the info/config... With make menuconfig under Toolchain-->GCC compiler Version you can select different versions, e.g. - gcc 4.9.x (works) - gcc 5.x (untested) - gcc 6.x (untested) - gcc 7.x (your/default selection, numpy segfault) - gcc 8.x (numpy segfault) Or in case you use buildroot master from git - gcc 9.x (works)
OK for the workaround. So you mean it is intrinsic to the gcc compiler and will be fixed in the next major buildroot release (2019.08)? If so it is fine for me. Thanks for the help.
Update: - gcc 5.x (works) - gcc 6.x (numpy segfault) Yes, gcc-9.1 support was added already on git master (see [1]) and will land in the next buildroot release... [1] https://git.buildroot.net/buildroot/commit/?id=089000eccf584d611ad1a8e5400436952450e883