# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sci-libs/mpir/mpir-2.2.1.ebuild,v 1.3 2011/05/14 09:33:32 tomka Exp $

EAPI="3"

inherit eutils autotools

DESCRIPTION="Library for arbitrary precision integer arithmetic derived from version 4.2.1 of gmp"
HOMEPAGE="http://www.mpir.org/"
SRC_URI="http://www.mpir.org/${P}.tar.bz2"

LICENSE="LGPL-3"
SLOT="0"
KEYWORDS="amd64 x86"
IUSE="+cxx cpudetection"

DEPEND="x86? ( dev-lang/yasm )
	amd64? ( dev-lang/yasm )"
RDEPEND=""

src_prepare(){
	epatch \
		"${FILESDIR}/${PN}-2.2.0-yasm.patch" \
		"${FILESDIR}/${PN}-1.3.0-ABI-multilib.patch"
	# In the same way there was QA regarding executable stacks
	# with GMP we have some here as well. We cannot apply the
	# GMP solution as yasm is used, at least on x86/amd64.
	# Furthermore we are able to patch config.ac.

	ebegin "Patching assembler files to remove executable sections"

	for i in $(find . -type f -name '*.asm') ; do
		cat >> $i <<-EOF
			#if defined(__linux__) && defined(__ELF__)
			.section .note.GNU-stack,"",%progbits
			#endif
		EOF
	done

	for i in $(find . -type f -name '*.as') ; do
		cat >> $i <<-EOF
			%ifidn __OUTPUT_FORMAT__,elf
			section .note.GNU-stack noalloc noexec nowrite progbits
			%endif
		EOF
	done

	eend

	eautoreconf
}

src_configure() {
# beware that cpudetection aka fat binaries is x86/amd64 only.
# Place mpir in profiles/arch/$arch/package.use.mask when making it available on $arch.
	econf \
		$(use_enable cxx) \
		$(use_enable cpudetection fat)
}

src_install() {
	emake DESTDIR="${D}" install || die "emake install failed"
	dodoc ChangeLog README NEWS || die
}