#
# PREAMBLE
#
DESCRIPTION="A step towards a free computer algebra system."
HOMEPAGE="http://www.fis.unipr.it/~stefanw/gtybalt.html"
SRC_URI="http://www.fis.unipr.it/~stefanw/gtybalt/${P}.tar.gz"
LICENSE="GPL-2"

#
# OPTIONS
#
SLOT="0"
KEYWORDS="~x86"
IUSE=""

# 
# DEPENDENCIES
#
# Validated dependencies for gTybalt v0.1.4:
#    * gcc 3.2, 2.95.3
#    * GiNaC 1.0.14, 1.0.9
#    * Root 3.03.09, 3.03.06
#    * TeXmacs 1.0.0.21, 1.0.0.9
#    * GSL 1.2
#    * CLN 1.1.5
#    * NTL 5.0c (optional)
#    * nestedsums 1.1.0 (optional)
#
# Since this is a math application, it is
# quite sensitive to wrinkles in the compiler and
# core libraries so it'd be best to get the EXACT 
# versions for those.
#
MATHDEP="=app-sci/ginac-1.0.9*
		=dev-libs/root-3.03.09*
		=dev-libs/gsl-1.2*
		=dev-libs/cln-1.1.5*
		=dev-libs/nestedsums-1.1.0*
		=dev-libs/ntl-5.0c"
COMPDEP="=sys-devel/gcc-2.95.3*"
MISCDEP=">=app-office/texmacs-1.0"
DEPEND="$COMPDEP
		$MATHDEP"
RDEPEND="$MATHDEP
		$MISCDEP"

#
# BUILD
#
S=${WORKDIR}/${P}
src_compile() {
	local myconf="" 
	myconf="$myconf --with-ntl --with-ntl-prefix=/usr"
	myconf="$myconf --with-nestedsums"
	econf $myconf # '$myconf', _NOT_ '"$myconf"'
	emake || die
}

#
# INSTALL
#
src_install() {
	make DESTDIR=${D} install || die
	mkdir -p ${D}usr/lib/root
	cd ${D}usr/lib/root
	ln -sf ../libgtybaltdict.so libgtybaltdict.so
}

#
# POST-INSTALL
#
pkg_postinst() {
	einfo "To run gTybalt in TeXmacs, run \"texmacs\" and then"
	einfo "go to the menu entry \"Text->Session->GTybalt\""
}