You receive this bug because this package does not respect my system's AR (x86_64-pc-linux-gnu-ar) and calls directly /usr/bin/ar The possible solutions to fix this issue are: 1)Fix the buildsystem, if you can; 2)inherit toolchain-funcs and use tc-export AR 3)inherit toolchain-funcs and use emake AR="$(tc-getAR)" From the build log: ar cru libgnu.a fwriteerror.o localcharset.o malloca.o mbchar.o mbslen.o mbsstr.o progname.o strnlen1.o uniwidth/width.o xalloc-die.o exitfail.o safe-read.o xmalloc.o ar cru src/liblib.a src/bind-mount.o src/lib.o
Thanks for the hint.