Created attachment 445090 [details] qtgui build log I noticed the following errors when rebuilding world with gcc 6.2.0 (from the hardened overlay). The packages that exhibit this are: qtgui-5.7.0, qtopengl-5.7.0, qtprintsupport-5.7.0, qtwidgets-5.7.0. All aforementioned packages fail during the compile phase with: avx512.cpp:51:4: error: #error "Feature not supported" # error "Feature not supported" ^~~~~ avx512.cpp: In function ‘int main(int, char**)’: avx512.cpp:61:42: warning: AVX512F vector return without AVX512F enabled changes the ABI [-Wpsabi] i = _mm512_maskz_loadu_epi32(0, argv); ^ gmake: *** [Makefile:163: avx512.o] Error 1 avx512f disabled. My CFLAGS is set to "-march=skylake -O2 -pipe". According to GCC manual, march=skylake doesn't enable AVX512. I'm attaching qtgui build log and emerge --info.
Created attachment 445092 [details] emerge --info output
The errors earlier in the log are a normal part of Qt's configuration process. The final error is more concerning as the gles2 check failed but you have that USE flag enabled.
It seems it must have been a mesa issue (I'm using live mesa). The problem does no longer manifest with current mesa builds. Please close this as invalid.
Nope, my bad. I thought qtnetwork was affected too but I've just tried qtprintsupport and I still get the same...
Now it's gone. So I supposed it could have been a mesa issue. I'm sorry for the noise generated, please close.