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: checking for gcc... gcc gcc -o build-grub-mkfont -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/include -DLOCALEDIR=\"/usr/share/locale\" -DGRUB_FILE=\"util/grub-mkfont.c\" -I. -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00 -I. -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00 -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/include -I./include -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/lib/libgcrypt-grub/include -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/lib/libgcrypt-grub/src/ -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/gnulib -DGRUB_MKFONT=1 -DGRUB_UTIL=1 /var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/util/grub-mkfont.c /var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/unidata.c /var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/kern/emu/argp_common.c /var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/kern/emu/misc.c /var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/util/misc.c /var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/gnulib/progname.c -I/usr/include/freetype2 -lfreetype -lz -lbz2 gcc -o gentrigtables -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/include -DLOCALEDIR=\"/usr/share/locale\" -DGRUB_FILE=\"gentrigtables.c\" -I. -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core -I.. -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00 -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/include -I../include -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/lib/libgcrypt-grub/include -I/var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/lib/libgcrypt-grub/src/ /var/tmp/portage/sys-boot/grub-2.00_p5107-r1/work/grub-2.00/grub-core/gentrigtables.c -lm
Created attachment 359188 [details] build log
+ 21 Sep 2013; Mike Gilbert <floppym@gentoo.org> grub-2.00_p5107-r1.ebuild, + grub-9999.ebuild: + Export BUILD_CC before calling configure, bug 486592 by ago. +