# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: $

# Known problems with this ebuild:
# - Not support for libqhull.
# - No documentation building.

DESCRIPTION="A Scientific Plotting Library"
HOMEPAGE="http://${PN}.sourceforge.net/"
SRC_URI="mirror://sourceforge/${PN}/${P}.tar.gz"
LICENSE="LGPL-2"

SLOT="0"
KEYWORDS="~x86"
IUSE="debug doc f77 gd-external gnome ifc java jpeg png python tcltk tetex truetype X itcl octave"

DEPEND="${RDEPEND}
	dev-util/pkgconfig
	ifc? ( dev-lang/ifc )"
	# For documentation building (currently doesn't work).
	# doc? ( app-text/docbook-sgml-utils )

RDEPEND="virtual/glibc
	sys-apps/man
	dev-lang/perl
	app-text/opensp
	python? ( dev-python/numeric )
	java? ( virtual/jre )
	tetex? ( app-text/jadetex )
	octave? ( app-sci/octave )
	external-gd? ( media-libs/libgd )
	truetype? ( media-libs/freetype )
	X? ( virtual/x11
		tcltk? ( dev-lang/tcl
			dev-lang/tk
			itcl? ( dev-tcltk/itcl )
		)
		gnome? ( gnome-base/gnome-libs )
	)"
	# Optional support for libqhull (currently doesn't work).
	# qhull? ( media-libs/qhull )
	# Documentation building (if it worked) would produce info files.
	# sys-apps/texinfo

pkg_setup() {
	# If the fortran interface is wanted, the gnu f77 compiler
	# is needed unless ifc is used (which is taken care of in
	# the dependencies).
	use f77 && ! use ifc || if [ -z 'which g77' ]; then
		eerror "GNU fortran 77 compiler not found on the system."
		eerror "Please add f77 to your USE flags and reemerge gcc."
		die
	fi
}

src_compile() {
	# Doesn't compile with j > 1.
	MAKEOPTS="${MAKEOPTS} -e -j1"

	local EXTRA_CONF

	# Compilation options (debug, documentation).
	EXTRA_CONF="${EXTRA_CONF} $(use_with debug)"
	# Documentation building doesn't work.
	# The xml catalogs are not found.
	# if use doc; then
	# 	EXTRA_CONF="${EXTRA_CONF} --enable-builddoc \
	# 	--with-xml-declaration=/usr/share/sgml/xml.dcl"
	# else
	# 	EXTRA_CONF="${EXTRA_CONF} --disable-builddoc"
	# fi
	EXTRA_CONF="${EXTRA_CONF} --disable-builddoc"

	# Language bindings.
	EXTRA_CONF="${EXTRA_CONF} $(use_enable python)"
	EXTRA_CONF="${EXTRA_CONF} $(use_enable java)"
	EXTRA_CONF="${EXTRA_CONF} $(use_enable octave)"
	if use ifc; then
		EXTRA_CONF="${EXTRA_CONF} --enable-f77 F77=/opt/intel/compiler70/ia32/bin/ifc"
	elif use f77; then
		EXTRA_CONF="${EXTRA_CONF} --enable-f77"
	else
		EXTRA_CONF="${EXTRA_CONF} --disable-f77"
	fi

	# Device drivers.
	EXTRA_CONF="${EXTRA_CONF} $(use_enable jpeg)"
	EXTRA_CONF="${EXTRA_CONF} $(use_enable png)"
	EXTRA_CONF="${EXTRA_CONF} $(use_enable tetex pstex)"
	# Dynamic driver loading causes segfaults.
	EXTRA_CONF="${EXTRA_CONF} --disable-dyndrivers"
	# The linuxvga driver doesn't compile.
	EXTRA_CONF="${EXTRA_CONF} --disable-linuxvga"

	# Support for optional libraries.
	EXTRA_CONF="${EXTRA_CONF} $(use_with truetype freetype)"
	# Support for libqhull doesn't work. The configure script
	# doesn't find the lib.
	# EXTRA_CONF="${EXTRA_CONF} $(use_with qhull)"
	EXTRA_CONF="${EXTRA_CONF} --without-qhull"

	# Additional X-dependent language bindings and device drivers.
	if use X; then
		EXTRA_CONF="${EXTRA_CONF} --with-x"
		if use tcltk; then
			EXTRA_CONF="${EXTRA_CONF} --enable-tcl"
			EXTRA_CONF="${EXTRA_CONF} $(use_enable itcl)"
		else
			EXTRA_CONF="${EXTRA_CONF} --disable-tcl"
			EXTRA_CONF="${EXTRA_CONF} --disable-tk"
			EXTRA_CONF="${EXTRA_CONF} --disable-itcl"
		fi
		EXTRA_CONF="${EXTRA_CONF} $(use_enable gnome)"
	else
		EXTRA_CONF="${EXTRA_CONF} --without-x"
		EXTRA_CONF="${EXTRA_CONF} --disable-tcl"
		EXTRA_CONF="${EXTRA_CONF} --disable-itcl"
		EXTRA_CONF="${EXTRA_CONF} --disable-gnome"
	fi

	econf ${EXTRA_CONF} || die
	emake || die
}

src_install() {
	make install DESTDIR=${D} || die

	# To match the Gentoo FSH.
	mv ${D}/usr/share/doc/${PN} ${D}/usr/share/doc/${PF}
	mv ${D}/usr/share/${PN}${PV} ${D}/usr/share/${PN}
	if use java; then
		mv ${D}/usr/lib/java/plplot ${D}/usr/share/${PN}/lib
		rm -r ${D}/usr/lib/java
	fi
	if use octave; then
		mv ${D}/usr/share/plplot_octave ${D}/usr/share/plplot/octave
		mv ${D}/usr/PLplot ${D}/usr/share/${PN}/octave/PLplot
		cd ${D}/usr/share/${PN}/octave/PLplot
		sed -ie 's:/usr/share/plplot_octave:/usr/share/plplot/octave:' plplot_octave_path.m
	fi

	# Gzip the basic documentation.
	gzip ${D}/usr/share/doc/${PF}/*
	# Install prebuilt documentation.
	use doc && dohtml doc/docbook/src/*.html
}