Compilation fails because in nauty.h:63: 63 #define _FILE_OFFSET_BITS this macro was not given a value. Therefore subsequent comparisons fail. However in the upstream source tar ball: https://pallini.di.uniroma1.it/nauty2_8_8.tar.gz, nauty.h:63, the macro is properly defined: 63 #define _FILE_OFFSET_BITS 0 I believe there might be something wrong with line 54-55 in this patch "${WORKDIR}/debian/patches/upstream-autotoolization.patch".
Created attachment 881008 [details] build.log
Created attachment 881009 [details] emerge.log
Reverse dupe as I already cross linked the other *** This bug has been marked as a duplicate of bug 921138 ***