You receive this bug because this package does not respect my system's AR ( x86_64-pc-linux-gnu-ar - /usr/bin/x86_64-pc-linux-gnu-ar ) and calls directly ar - /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)" ranlib "`ocamlfind query lablgtk2 | tr -d '\r'`"/liblablgtk2.a
Last version: dev-ml/lablgtk-2.18.10 uses only x86_64-pc-linux-gnu-ar