# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-devel/kgcc64/kgcc64-3.4.5.ebuild,v 1.2 2006/03/01 01:10:28 vapier Exp $

case ${CHOST} in
	hppa*)    CTARGET=hppa64-${CHOST#*-};;
	mips*)    CTARGET=${CHOST/mips/mips64};;
	powerpc*) CTARGET=${CHOST/powerpc/powerpc64};;
	s390*)    CTARGET=${CHOST/s390/s390x};;
	sparc*)   CTARGET=${CHOST/sparc/sparc64};;
	i?86*)    CTARGET=x86_64-${CHOST#*-};;
esac
export CTARGET
export USE="nocxx nossp nopie -fortran -gcj -objc -multilib"

PATCH_VER="1.0"
ETYPE="gcc-compiler"
GCC_FILESDIR=${FILESDIR/${PN}/gcc}

inherit toolchain eutils

DESCRIPTION="64bit kernel compiler"

KEYWORDS="-* ~hppa ~mips ~ppc ~s390 ~sparc ~x86"

# unlike every other target, hppa has not unified the 32/64 bit
# ports in binutils yet
DEPEND="hppa? ( sys-devel/binutils-hppa64 )"

src_unpack() {
	gcc_src_unpack

	epatch "${GCC_FILESDIR}"/3.4.4/gcc-3.4.4-cross-compile.patch

	# Arch stuff
	case $(tc-arch) in
		mips)
			# Patch forward-ported from a gcc-3.0.x patch that adds -march=r10000 and
			# -mtune=r10000 support to gcc (Allows the compiler to generate code to
			# take advantage of R10k's second ALU, perform shifts, etc..
			#
			# Needs re-porting to DFA in gcc-4.0 - Any Volunteers? :)
			epatch "${GCC_FILESDIR}"/3.4.2/gcc-3.4.x-mips-add-march-r10k.patch

			# This is a very special patch -- it allows us to build semi-usable kernels
			# on SGI IP28 (Indigo2 Impact R10000) systems.  The patch is henceforth
			# regarded as a kludge by upstream, and thus, it will never get accepted upstream,
			# but for our purposes of building a kernel, it works.
			# Unless you're building an IP28 kernel, you really don't need care about what
			# this patch does, because if you are, you are probably already aware of what
			# it does.
			# All that said, the abilities of this patch are disabled by default and need
			# to be enabled by passing -mip28-cache-barrier.  Only used to build kernels, 
			# There is the possibility it may be used for very specific userland apps too.
			epatch "${GCC_FILESDIR}"/3.4.2/gcc-3.4.2-mips-ip28_cache_barriers-v2.patch
			;;
	esac
}