ebuild replaces occurrences of strip in makefile.in with true causing gcc to error out with unknown flag -f-true-mine (-f-strip-mine is one of the new GCC options to utilize graphite) patch attached to workaround the issue. Reproducible: Always
Created attachment 187177 [details, diff] ebuild patch works around by first replacing strip-mine with string that surely isnt in makefile, then changing it back after strip is sed replaced
resync and try again.