https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100324
--- Comment #5 from Iain Buclaw <ibuclaw at gdcproject dot org> --- (In reply to Tor from comment #0) > make -j 64 > Never had an issue with parallel builds up to -j16. Won't have the hardware to even attempt -j64 for another fortnight. Minimal libtool support is in libphobos/m4/libtool.m4, however I don't think there'd be anything there that might explain why libtool is called before it is created.