Created attachment 418176 [details] Build log After recent fixes in 'science' overlay (I guess), dev-libs/igraph-0.7.1-r1 fails to build with the following error message: /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -llapack /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lblas collect2: error: ld returned 1 exit status Makefile:1386: recipe for target 'libigraph.la' failed
Attach config.log too.
Created attachment 418178 [details] config.log
So : ARPACK_LIBS='-larpack -llapack -L/usr/lib64/blas/reference -lblas ' BLAS_LIBS='-lrefblas ' LAPACK_LIBS='-lreflapack -lrefblas ' Looks like something went out of sync here. Given the error, check arpack.
This seems to be fixed now. I am not sure about the exact commit that fixed this issue, but the igraph was successfully built on my system on December 15, which means somebody had made it possible by that time. Thanks!