# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI="2"

inherit pax-utils

MY_P="LuaJIT-${PV}"

DESCRIPTION="A Just-In-Time Compiler for the Lua programming language"
HOMEPAGE="http://luajit.org/"
SRC_URI="http://luajit.org/download/${MY_P}.tar.gz"

LICENSE="MIT"
SLOT="1"
KEYWORDS="~amd64 ~x86"
IUSE="readline"

DEPEND="readline? ( sys-libs/readline )"
RDEPEND="${DEPEND}"

S="${WORKDIR}/${MY_P}"

src_prepare(){
	# fixing prefix
	sed -i -e "s#/usr/local#${D}/usr#" Makefile \
		|| die "failed to fix prefix in Makefile"
	sed -i -e 's#/usr/local/#/usr/#' src/luaconf.h \
		|| die "failed to fix prefix in luaconf.h"

	# forcing the use of our CFLAGS
	sed -i -e "s/\$(MYCFLAGS)/\$(MYCFLAGS) ${CFLAGS}/" src/Makefile \
		|| die "failed to force the use of the CFLAGS from the user"
}

src_compile(){
	if use readline; then
		emake linux_rl || die "emake failed."
	else
		emake linux || die "emake failed."
	fi
}

src_install(){
	einstall

	# removing empty dir that was supposed to have the man pages.
	# dev-lang/luajit:1 doesn't install man pages.
	rm -rf "${D}usr/man"

	mv "${D}usr/bin/luajit" "${D}usr/bin/luajit-${PV}" || die "mv failed!"
	pax-mark m "${D}usr/bin/luajit-${PV}"
	dosym "luajit-${PV}" "/usr/bin/luajit-${SLOT}"
}