sys-devel/gcc-4.3.0_alpha20061111 should depend on >=dev-libs/mpfr-2.2.0_p10, because: configure: error: Building GCC requires GMP 4.1+ and MPFR 2.2+. After installing MPFR it configures OK. In $DEPEND is currently this: fortran? ( >=dev-libs/gmp-4.2.1 >=dev-libs/mpfr-2.2.0_p10 ) but we obviously need mpfr (and gmp?) even if we don't build fortran compiler. Btw, I'm running ~amd64 system and trying to compile gcc with USE="nls (-altivec) -bootstrap -build -doc -fortran -gcj -gtk (-hardened) -ip28 -ip32r10k -mudflap (-multilib) -multislot (-n32) (-n64) -nocxx -objc -objc++ -objc-gc -test -vanilla"
fixed in cvs