# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
#
# Daniel Tourde, daniel.tourde@caelae.se

inherit eutils toolchain-funcs versionator flag-o-matic

DESCRIPTION="Software development platform including components for 3D surface and solid modeling, visualization, data exchange and rapid application development."
HOMEPAGE="http://www.opencascade.org"
SRC_URI="ftp://ftp.freebsd.org/pub/FreeBSD/ports/local-distfiles/thierry/${P}.tar.bz2
	ftp://ftp.freebsd.org/pub/FreeBSD/ports/local-distfiles/thierry/${PN}-samples-java-${PV}.tar.bz2
	ftp://ftp.freebsd.org/pub/FreeBSD/ports/local-distfiles/thierry/${PN}-samples-qt-${PV}.tar.bz2
	ftp://ftp.freebsd.org/pub/FreeBSD/ports/local-distfiles/thierry/${PN}-tutorial-${PV}.tar.bz2"
# The source code here is NOT in the same form than the one distributed on opencascade.org
# The source available on opencascade.org requires a Java installation procedure that does not 
# always work on Gentoo. The source code can however be extracted 'by hand' using
# 'java -cp ./Linux/setup.jar -DOS_NAME=Linux -Dtemp.dir=/some/big/dir/tmp run'
# and removing 'by hand' all the existing Linux binaries.
# The source code extracted using this method is available (for the time being) 
# on the FreeBSD ftp server.
# An other possibility is to download the Salome binary for linux (500Mb...)
# and to extract the source code for OpenCascade from there.
#
# In any case, none of these solutions are really satisfactory. A better method should
# be found
LICENSE="Open CASCADE Technology Public License"
SLOT="6"
KEYWORDS="amd64 x86"

IUSE="examples debug java fltk stlport X opengl"
DEPEND="java? ( =virtual/jdk )
	>=dev-lang/tcl-8.4 
	>=dev-lang/tk-8.4
	>=dev-tcltk/itcl-3.2
	>=dev-tcltk/itk-3.2
	x86? ( >=dev-tcltk/tix-8.1 )
	fltk? ( x11-libs/fltk )
	stlport? ( dev-libs/STLport )
	sys-devel/autoconf
        sys-devel/automake
        sys-devel/libtool"


src_unpack() {
        unpack ${A}
        cd ${S}/ros
	sed -i "s:/usr/ports/cad/opencascade/:/var/tmp/portage/${PF}/:g" ./env.*

	local tk_version
	tk_version=$(grep TK_VER /usr/include/tk.h | sed 's/^.*"\(.*\)".*/\1/')
	sed -i "s:tk8.4:tk${tk_version}:g" ./env.*

	local itcl_version
	itcl_version=$(grep ITCL_VER /usr/include/itcl.h | sed 's/^.*"\(.*\)".*/\1/')
	sed -i "s:itcl3.2:itcl${itcl_version}:g" ./env.*

	# tix 8.4.0 does not build on AMD64 at the moment. Hopefully this will
	# be corrected soon.
	if use x86 ; then
		local tix_version
		tix_version=$(grep TIX_VER /usr/include/tix.h | sed 's/^.*"\(.*\)".*/\1/')
		sed -i "s:tix8.1:tix${tix_version}:g" ./env.*
	fi

	local itk_version
	itk_version=$(grep ITK_VER /usr/include/itk.h | sed 's/^.*"\(.*\)".*/\1/')
	sed -i "s:itk3.2:itk${itk_version}:g" ./env.*

	local tcl_version
	tcl_version=$(grep TCL_VER /usr/include/tcl.h | sed 's/^.*"\(.*\)".*/\1/')
	sed -i "s:tcl8.4:tcl${tcl_version}:g" ./env.*
}

src_compile() {
        cd ${S}/ros
	# Two solutions to deal with GCC-4.1, use this patch or add some flags to
	# CXXFLAGS (see below)
#	epatch ${FILESDIR}/CASCADE_6.1.0_gcc4.1.patch
        chmod u+x configure

        source env.ksh
        aclocal || die "aclocal failed"
	autoheader || die "autoheader failed"
        automake -a -c -f 
        libtoolize --force --copy || die "libtoolize failed"
        autoconf || die "autoconf failed"

	# Determine the configure options
	if use opengl && use !X; then
		ewarn "OpenGL functionnalities imply X support! Check your USE flags configuration."
        	die
	fi

	local myconf="--prefix=/usr --with-tcl=/usr/lib/ --with-tk=/usr/lib/"

	if use X; then
		myconf="${myconf} --with-x --with-xmu-include=/usr/include --with-xmu-library=/usr/lib"
		if use opengl; then
			myconf="${myconf} --with-gl-include=/usr/include --with-gl-library=/usr/lib"
		fi
	else
		myconf="${myconf} --without-x --without-gl --without-xmu"
	fi

	if use !debug; then
		myconf="${myconf} --disable-debug --enable-production"
	else
		myconf="${myconf} --enable-debug"
        fi

	if use stlport; then
#                myconf="${myconf} --with-stlport-library=/usr/lib/ --with-stlport-libname=stlport_gcc --with-stlport-include=/usr/include/stlport"
# To specify everything seems to screw up the configuration process regarding the setting
# up of CXXFLAGS
		myconf="${myconf} --with-stlport-libname=stlport_gcc"
        else
                myconf="${myconf} --without-stlport"
	fi

	# CXXFLAGS are slightly modified to allow the compilation of OpenCascade-6.1 with gcc-4.1.x
	if version_is_at_least "4.1" $(gcc-version) ; then
		append-flags -ffriend-injection -fpermissive
	fi 
 	econf 	$(use_with java) \
                $(use_with fltk) \
                ${myconf} || die "econf failed"
        emake || die "emake failed"
}


src_install() {
	cd ${S}/ros
        emake DESTDIR="${D}" install || die "emake install failed"
	# Install the documentation
	cd ${S}/doc
	dodoc *.pdf ../LICENSE
	dodir /usr/share/doc/${PF}/html
	insinto /usr/share/doc/${PF}/html
	doins -r ${S}/doc/*
	# Install necessary directories under /usr/share/opencascade-x.y
	# I am not sure everything is put and I am not really sure /usr/share is the
	# most appropriate place. Any better suggestion is welcome.
	# To begin with, the source has to be cleaned of every Makefile, .o etc..
	# before part of it is copied under /usr/share
	cd ${S}/ros
	emake distclean || die "emake distclean failed"
	cd ${S}
	dodir /usr/share/${PF}
	insinto /usr/share/${PF}
	doins -r  LICENSE data ros tools wok
	if use examples ; then
		doins -r samples
	fi
	# Create the file to be stored under /etc/env.d. OpenCascade needs indeed environment variables
	# to be set.
	cd ${S}/ros
	sed -i "s:export::g" ./env.ksh
	sed -i "1,2d" ./env.ksh
	sed -i "s:/var/tmp/portage/${PF}/work/${PF}/ros:/usr/share/${PF}/ros/:g" ./env.ksh
	sed -i "2,12d" ./env.ksh
	sed -i "s:\$CASROOT/../3rdparty/\$OS_NAME/tcltk:/usr:g" ./env.ksh
	sed -i "s:\$CASROOT/\$OS_NAME/lib/:/usr/lib//:g" ./env.ksh
	sed -i "22d" ./env.ksh
	sed -i "27,36d" ./env.ksh
	mv env.ksh 50${PF}
	dodir /etc/env.d
	insinto /etc/env.d
	doins 50${PF}
}