# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-libs/zlib/zlib-1.2.1-r2.ebuild,v 1.12 2004/07/22 05:06:07 vapier Exp $

inherit eutils flag-o-matic

DESCRIPTION="Standard (de)compression library"
HOMEPAGE="http://www.gzip.org/zlib/"
SRC_URI="http://www.gzip.org/zlib/${P}.tar.bz2"

LICENSE="ZLIB"
SLOT="0"
KEYWORDS="x86 ~ppc sparc mips alpha arm hppa amd64 ~ia64 ~ppc64 s390"
IUSE="build asm"

DEPEND="virtual/libc"

src_unpack() {
	unpack ${A}

	cd ${S}
	# Make sure we link with glibc at all times
	epatch ${FILESDIR}/${P}-glibc.patch
	# Needed for Alpha and prelink
	epatch ${FILESDIR}/${P}-build-fPIC.patch
	# Only export global symbols, bug #32764
	epatch ${FILESDIR}/${P}-mapfile.patch
	# The configure script can be kind of dumb #55434
	epatch ${FILESDIR}/${P}-configure.patch
}

src_compile() {

	local myflags=""
	if use asm  # using asm optimisations
	then
		if use x86  # only for x86
		then
			local myarch="$(uname -m)"
			case "$myarch" in
			i[56]86)
				append-flags -DASMV
				replace-flags "-Os" "-O3"
				replace-flags "-O1" "-O3"
				replace-flags "-O2" "-O3"
				cp contrib/asm${myarch/i/}/* .
				epatch ${FILESDIR}/${P}-asm.patch
				einfo "Using ${myarch} assembler optimisation..."
				myflags="OBJA=match.o"
				;;
			*)
				ewarn "No assembler optimisation available for this architecture!"
				;;
			esac
		else
			ewarn "No assembler optimisation available for this architecture!"
		fi
	fi

	./configure --shared --prefix=/usr --libdir=/lib || die
	emake $myflags || die
	make test || die

	./configure --prefix=/usr --libdir=/lib || die
	emake $myflags || die
}

src_install() {
	einstall libdir=${D}/lib || die
	rm ${D}/lib/libz.a
	into /usr
	dodir /usr/include
	insinto /usr/include
	doins zconf.h zlib.h

	if ! use build ; then
		doman zlib.3
		dodoc ChangeLog FAQ README*
		docinto txt
		dodoc algorithm.txt
	fi

	# we don't need the static lib in /lib
	# as it's only for compiling against
	into /usr
	dolib libz.a

	# all the shared libs go into /lib
	# for NFS based /usr
	into /
	dolib libz.so.${PV}
	( cd ${D}/lib ; chmod 755 libz.so.* )
	dosym libz.so.${PV} /lib/libz.so
	dosym libz.so.${PV} /lib/libz.so.1
	# with an extra symlink at /usr/lib
	dosym /lib/libz.so.${PV} /usr/lib/libz.so
}