# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-libs/dietlibc/dietlibc-0.33.ebuild,v 1.1 2013/10/13 15:15:44 polynomial-c Exp $

EAPI=5
inherit eutils flag-o-matic toolchain-funcs

DESCRIPTION="A libc optimized for small size"
HOMEPAGE="http://www.fefe.de/dietlibc/"
SRC_URI="http://www.fefe.de/dietlibc/${P}.tar.bz2"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm -hppa ~ia64 ~mips ~sparc ~x86 ~amd64-linux ~x86-linux"
IUSE=""

DEPEND=""
RDEPEND=""

DIETHOME=/usr/diet

IUSE_LIBC_TARGET="alpha arm armeb i386 ia64 mips mipsel parisc parisc64 ppc ppc64 s390 s390x sparc sparc64 x86_64"

for t in ${IUSE_LIBC_TARGET} ; do
	IUSE="${IUSE} target_${t}"
done

src_prepare() {
	epatch "${FILESDIR}/${PV}-BJA-nostrip.diff"
}

diet_flags() {
	# Reset CFLAGS
	CFLAGS=""

	# Replace sparc64 related C[XX]FLAGS (see bug #45716)
	use sparc && replace-sparc64-flags

	# gcc-hppa suffers support for SSP, compilation will fail
	use hppa && strip-unsupported-flags

	# Makefile does not append CFLAGS
	append-flags -nostdinc -W -Wall -Wextra -Wchar-subscripts \
		-Wmissing-prototypes -Wmissing-declarations -Wno-switch \
		-Wno-unused -Wredundant-decls -fno-strict-aliasing

	# only use -nopie on archs that support it
	gcc-specs-pie && append-flags -nopie

	append-flags -Wa,--noexecstack
}

src_compile() {
	for t in ${IUSE_LIBC_TARGET} ; do
		use target_$t $USE || continue

		tC="CROSS_$t"
		if [ -z "${!tC}" ] ; then
			ewarn "CROSS_$t not defined, can't build"
			sleep 15
			continue
		fi

		CHOST="$t"
		diet_flags

		einfo "Building libc $t"
		emake prefix="${EPREFIX}"${DIETHOME} \
			MYARCH="${t}" \
			CROSS="${!tC}" \
			CFLAGS="${CFLAGS}"
	done
}

src_install() {
	emake prefix="${EPREFIX}"${DIETHOME} \
		DESTDIR="${ED}" \
		install-headers

	for t in ${IUSE_LIBC_TARGET} ; do
		use target_$t $USE || continue

		einfo "Installing libc $t"
		emake prefix="${EPREFIX}"${DIETHOME} \
			MYARCH="${t}" \
			DESTDIR="${ED}" \
			install-bin
	done

	dobin "${ED}"${DIETHOME}/bin/*
	doman "${ED}"${DIETHOME}/man/*/*
	rm -r "${ED}"${DIETHOME}/{man,bin} || die

	dodoc AUTHOR BUGS CAVEAT CHANGES README THANKS TODO PORTING
}