# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-scheme/gambit/gambit-4.0_beta22.ebuild,v 1.7 2007/07/09 13:37:31 hkbst Exp $

inherit eutils elisp-common check-reqs autotools multilib

MY_PN=gambc
MY_PV=${PV//_beta/b}
MY_P=${MY_PN}-${MY_PV}

DESCRIPTION="Gambit-C is a native Scheme to C compiler and interpreter."
HOMEPAGE="http://www.iro.umontreal.ca/~gambit/"
SRC_URI="http://www.iro.umontreal.ca/~gambit/download/gambit/4.0/source/${MY_P}.tar.gz"

LICENSE="|| ( Apache-2.0 LGPL-2.1 )"
SLOT="0"
KEYWORDS="~amd64 ~ppc64 ~x86"

DEPEND="emacs? ( virtual/emacs )"

SITEFILE="50gambit-gentoo.el"

S=${WORKDIR}/${MY_P}

IUSE="emacs big-iron"

pkg_setup() {
	if ! use big-iron; then
		ewarn "not using gcc specific optimizations and not compiling syntax-case macro system"
		ewarn "approximately 0.5GB ram will be needed"
		ewarn "if you experience thrashing, try disabling parallel building"
		# need this much memory in MBytes (does *not* check swap)
		CHECKREQS_MEMORY="768" check_reqs
	else
		ewarn "using gcc specific optimizations and compiling syntax-case macro system"
		ewarn "this will cause approximately 2GB ram to be used instead of 0.5GB."
		ewarn "this will cause heavy thrashing of your system unless your system is big iron"
		# need this much memory in MBytes (does *not* check swap)
		CHECKREQS_MEMORY="2560"	check_reqs
	fi
}

src_unpack() {
	unpack ${A}; cd "${S}"
	sed -e "s:PACKAGE_SUBDIR=\"/${MY_PV}\":PACKAGE_SUBDIR=\"/\":" -i configure.ac
	eautoreconf
}

src_compile() {
	econf --enable-shared --enable-single-host $(use_enable big-iron)
	emake || die "emake failed"

	if use emacs; then
		( cd misc; elisp-comp *.el )
	fi

	# compile syntax-case
	if use big-iron; then
		einfo "compiling syntax-case.scm..."
		LD_LIBRARY_PATH="lib/" GAMBCOPT="=." gsc/gsc misc/syntax-case.scm
	fi
}

src_test() {
	vecho ">>> Test phase [check]: ${CATEGORY}/${PF}"
	if ! GAMBCOPT="=." emake -j1 check; then
		hasq test $FEATURES && die "Make test failed. See above for details."
		hasq test $FEATURES || eerror "Make test failed. See above for details."
	fi
}

src_install() {
	einstall docdir=${D}/usr/share/doc/${PF} || die "einstall failed"

	rm ${D}/usr/current

	use big-iron && dolib syntax-case.*
	mv ${D}/usr/syntax-case.scm ${D}/usr/$(get_libdir)

	# rename the /usr/bin/gsc to avoid collision with gsc from ghostscript
	mv ${D}/usr/bin/gsc ${D}/usr/bin/gsc-gambit

	# remove emacs/site-lisp/gambit.el
	rm -r ${D}/usr/share/emacs
	if use emacs; then
		elisp-install ${PN} misc/*.{el,elc}
		elisp-site-file-install ${FILESDIR}/${SITEFILE}
	fi

	dodoc INSTALL.txt README
	insinto /usr/share/doc/${PF}
	doins -r examples

	# create some more explicit names
	dosym gsc-gambit usr/bin/gambit-compiler
	dosym gsi usr/bin/gambit-interpreter

	# automatically load syntax-case for r5rs+ goodness
	dodir /etc/env.d/ && echo "GAMBCOPT=\"=/usr/\"" > ${D}/etc/env.d/50gambit
	echo "(load \"/usr/$(get_libdir)/syntax-case\")" > ${D}/usr/gambcext
}

pkg_postinst() {
	use emacs && elisp-site-regen
}

pkg_postrm() {
	use emacs && elisp-site-regen
}