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 .libs/librxvt.a command.o defaultfont.o init.o graphics.o logging.o main.o menubar.o misc.o netdisp.o ptytty.o screen.o scrollbar.o scrollbar-rxvt.o scrollbar-next.o scrollbar-xterm.o xdefaults.o xpm.o
+ 15 May 2013; Michael Weber <xmw@gentoo.org> rxvt-2.7.10-r4.ebuild: + Respect AR (bug 468174) +