# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils flag-o-matic fortran

DESCRIPTION="Math software for algebra, geometry, number theory, cryptography, and numerical computation."
HOMEPAGE="http://www.sagemath.org"
SRC_URI="http://www.sagemath.org/src-old/${P}.tar"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86 ~ppc"
IUSE=""

DEPEND=">=sys-devel/bison-2.3"
RDEPEND=">=virtual/jre-1.4"


pkg_setup() {
    FORTRAN="gfortran"
    fortran_pkg_setup
    einfo "Sage itself is released under the GPL-2 _or later_ license"
}

spkg_patch() {
    # This is so (at least) mpir will compile.
    ABI=32
    if ( (use amd64) || (use ppc64)); then
        ABI=64
    fi

    # change to spkg dir
    cd "${S}/spkg/standard"

    # untar spkg and and remove it
    tar -xjf "sage-3.2.spkg"
    rm "sage-3.2.spkg"

    # apply patch
    epatch "${FILESDIR}"/sage-3.2.patch

    # tar patched dir and remove it
    tar -cjf "sage-3.2.spkg" "sage-3.2"
    rm -rf "sage-3.2"    
    # untar spkg and and remove it
    tar -xjf "clisp-2.46.p7.spkg"
    rm "clisp-2.46.p7.spkg"
    
    # apply patch
    epatch "${FILESDIR}"/clisp-2.46.p7.patch
    
    # tar patched dir and remove it
    tar -cjf "clisp-2.46.p7.spkg" "clisp-2.46.p7"
    rm -rf "clisp-2.46.p7"
}

src_compile() {
    # This is so (at least) mpir will compile.
    ABI=32
    if ( (use amd64) || (use ppc64)); then
        ABI=64
    fi
    spkg_patch
    cd ${S}
    make || die "make failed"
    if ( grep "sage: An error occurred" "${S}/install.log" ); then
        die "make failed"
    fi
}

src_install() {
    make DESTDIR="${D}/opt" install
    sed -i "s/SAGE_ROOT=.*\/opt/SAGE_ROOT=\"\/opt/" "${D}/opt/bin/sage" "${D}/opt/sage/sage"
    exeinto /opt/bin
    dosym /opt/sage/sage /opt/bin/sage

    # Force sage to create files in new location.  This has to be done twice -
    # this time to create the files for gentoo to correctly record as part of
    # the sage install
    "${D}/opt/sage/sage" -c quit
}

pkg_postinst() {
    # make sure files are correctly setup in the new location by running sage as
    # root. This prevent nasty message to be presented to the user.
    /opt/sage/sage -c quit
}