You receive this bug because this package does not respect my system's CC (x86_64-pc-linux-gnu-gcc) and calls directly /usr/bin/gcc(or similar) The possible solutions to fix this issue are: 1)Fix the buildsystem, if you can; 2)inherit toolchain-funcs and use tc-export CC 3)inherit toolchain-funcs and use emake CC="$(tc-getCC)" From the build log: gcc -ansi -pedantic -Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu -o ./bin/toast ./src/toast.o ./src/toast_lin.o ./src/toast_ulaw.o ./src/toast_alaw.o ./src/toast_audio.o ./lib/libgsm.so
I see tc-getCC used in 1.0.13-r1; it was fixed as part of a multilib port.