# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-lang/ocaml/ocaml-3.10.2.ebuild,v 1.17 2010/04/19 17:43:17 armin76 Exp $

EAPI="1"

inherit flag-o-matic eutils multilib versionator toolchain-funcs

MY_P="${P/_rc/+rc}"
DESCRIPTION="Fast modern type-inferring functional programming language descended from the ML family"
HOMEPAGE="http://www.ocaml.org/"
SRC_URI="http://caml.inria.fr/distrib/ocaml-$( get_version_component_range 1-2)/${MY_P}.tar.bz2"

LICENSE="QPL-1.0 LGPL-2"
SLOT="0"
KEYWORDS="alpha amd64 arm hppa ia64 ppc ppc64 sparc x86 ~x86-fbsd"
IUSE="emacs gdbm latex ncurses +ocamlopt tk X xemacs"

DEPEND="tk? ( >=dev-lang/tk-3.3.3 )
	ncurses? ( sys-libs/ncurses )
	X? ( x11-libs/libX11 x11-proto/xproto )
	gdbm? ( sys-libs/gdbm )"
RDEPEND="${DEPEND}"

PDEPEND="emacs? ( app-emacs/ocaml-mode )
	xemacs? ( app-xemacs/ocaml )"

S="${WORKDIR}/${MY_P}"
pkg_setup() {
	# dev-lang/ocaml creates its own objects but calls gcc for linking, which will
	# results in relocations if gcc wants to create a PIE executable
	if gcc-specs-pie ; then
		append-ldflags -nopie
		ewarn "Ocaml generates its own native asm, you're using a PIE compiler"
		ewarn "We have appended -nopie to ocaml build options"
		ewarn "because linking an executable with pie while the objects are not pic will not work"
	fi
}

src_unpack() {
	unpack ${A}
	cd "${S}"

	# Fix the EXEC_STACK in ocaml compiled binaries (#153382)
	epatch "${FILESDIR}"/${PN}-3.10.0-exec-stack-fixes.patch

	# The configure script doesn't inherit previous defined variables,
	# overwriting previous declarations of bytecccompopts, bytecclinkopts,
	# nativecccompopts and nativecclinkopts. Reported upstream as issue 0004267.
	epatch "${FILESDIR}"/${PN}-3.10.0-configure.patch

	# ocaml has automagics on libX11 and gdbm
	# http://caml.inria.fr/mantis/view.php?id=4278
	epatch "${FILESDIR}/${PN}-3.10.0-automagic.patch"

	# Call ld with proper flags, different from gcc ones
	# This happens when calling ocamlc -pack
	# See comment in the patch
	epatch "${FILESDIR}/${PN}-3.10.0-call-ld-with-proper-ldflags.patch"

	# Adapted from mandriva to get labltk built with tk8.5
	epatch "${FILESDIR}/${P}-tk85.patch"
}

src_compile() {
	export LC_ALL=C
	local myconf="--host ${CHOST}"

	# dev-lang/ocaml tends to break/give unexpected results with "unsafe" CFLAGS.
	strip-flags
	replace-flags "-O?" -O2

	# It doesn't compile on alpha without this LDFLAGS
	use alpha && append-ldflags "-Wl,--no-relax"
	# Fails to build on arm if >=O0 is used
	use arm && replace-flags "-O?" -O0

	use tk || myconf="${myconf} -no-tk"
	use ncurses || myconf="${myconf} -no-curses"
	use X || myconf="${myconf} -no-graph"
	use gdbm || myconf="${myconf} -no-dbm"

	# ocaml uses a home-brewn configure script, preventing it to use econf.
	./configure -prefix /usr \
		--bindir /usr/bin \
		--libdir /usr/$(get_libdir)/ocaml \
		--mandir /usr/share/man \
		--with-pthread ${myconf} || die "configure failed!"

	# bug #279968
	emake -j1 world || die "make world failed!"

	# Native code generation can be disabled now
	if use ocamlopt ; then
		emake -j1 opt || die "make opt failed!"
		emake -j1 opt.opt || die "make opt.opt failed!"
	fi
}

src_install() {
	emake -j1 BINDIR="${D}"/usr/bin \
		LIBDIR="${D}"/usr/$(get_libdir)/ocaml \
		MANDIR="${D}"/usr/share/man \
		install || die "make install failed!"

	# Install the compiler libs
	dodir /usr/$(get_libdir)/ocaml/compiler-libs
	insinto /usr/$(get_libdir)/ocaml/compiler-libs
	doins {utils,typing,parsing}/*.{mli,cmi,cmo,cmx,o}

	# Symlink the headers to the right place
	dodir /usr/include
	dosym /usr/$(get_libdir)/ocaml/caml /usr/include/

	# Remove ${D} from ld.conf, as the buildsystem isn't $(DESTDIR) aware
	dosed "s:${D}::g" /usr/$(get_libdir)/ocaml/ld.conf

	dodoc Changes INSTALL README Upgrading

	# Create and envd entry for latex input files (this definitely belongs into
	# CONTENT and not in pkg_postinst.
	if use latex ; then
		echo "TEXINPUTS=/usr/$(get_libdir)/ocaml/ocamldoc:" > "${T}"/99ocamldoc
		doenvd "${T}"/99ocamldoc
	fi

	# Install ocaml-rebuild.sh script rather than keeping it in $PORTDIR
	dosbin "${FILESDIR}/ocaml-rebuild.sh"
}

pkg_postinst() {
	echo
	ewarn "OCaml is not binary compatible from version to version, so you"
	ewarn "need to rebuild all packages depending on it, that are actually"
	ewarn "installed on your system. To do so, you can run:"
	ewarn "/usr/sbin/ocaml-rebuild.sh [-h | emerge options]"
	ewarn "Which will call emerge on all old packages with the given options"
	echo
}