When you try to emerge jpeg-6b-r3 you get this error. make:./libtool : command not found make: *** [jpcapimin.Lo] error 127 Error: the ebuild did not complete succesfully Function src_compil , line -147, errorcode 2 No error message It also mentions something about the host type not being able to be "none"
if you change $host in jpeg-6b-r3.ebuild to $chost (as it is defined in /etc/make.conf) it merges correctly.
done http://cvs.gentoo.org/cgi-bin/viewcvs.cgi/gentoo-x86/media-libs/jpeg/jpeg-6b-r3.ebuild.diff?r1=1.1&r2=1.2