gentoo-overlay/sci-libs/mpir/mpir-2.7.2.ebuild

# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI=6

inherit autotools toolchain-funcs

DESCRIPTION="Library for arbitrary precision integer arithmetic (fork of gmp)"
HOMEPAGE="http://www.mpir.org/"
SRC_URI="http://www.mpir.org/${P}.tar.bz2"

LICENSE="LGPL-3"
SLOT="0/16"
KEYWORDS="~amd64 ~hppa ~ia64 ~ppc ~ppc64 ~x86 ~amd64-linux ~x86-linux"
IUSE="+cxx cpudetection static-libs"

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

PATCHES=(
	"${FILESDIR}"/${P}-ABI-multilib.patch
	"${FILESDIR}"/${P}-sed-backport.patch
)

src_prepare() {
	tc-export CC

	default

	# 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"
	local i
	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.
	myeconfargs+=(
		--with-system-yasm
		$(use_enable cxx)
		$(use_enable cpudetection fat)
		$(use_enable static-libs static)
	)
	econf ${myeconfargs[@]}
}

src_install() {
	default
	rm "${ED}"/usr/$(get_libdir)/*la || die
}