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# Copyright 1999-2003 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-lang/ghc/ghc-5.04.3.ebuild,v 1.2 2003/04/06 06:42:25 george Exp $
#Some explanation of bootstrap logic:
#
#After thinking through the best way to bootstrap ghc I decided to split it into
#ghc and ghc-bin and make ghc depend on ghc-bin.
# The ebuild has been revamped and greatly simplified. Bootstrap off old 4x hc files no longer works on x86.
#Not sure what happens with old scheme on sparc, as I did not see any test reports.
#
#The considerations:
#Making ghc unpack binary build first (under ${WORKDIR}) and bootstrapping from that will effectively force
#ghc-bin reinstall every time ghc is rebuilt or upgraded. What is worse it will likely force download of binary image
#at upgrade, which is not nice (in fact quite bad for modem users - 16+ MB).
#
#The best results are achieved if ghc-bin is left alone after ghc installation -
#Both ebuilds install in the same place, thus space penalty is minimal. In fact only the docs exist in double
#(considering that ghc is not installing much docs at present this looks more like an advantage).
#When the upgrade time comes, if you still have ghc-bin around, portage will happily bootstrap off
#your existing ghc (or ghc-bin, whichever was merged last), without attempting to ruin anything...
#
#There is only one issue: ghci will be successfully built only if ghc is bootstrapped from the same version.
#Thus we need to detect presently installed one and bootstrap in one or two stages..
inherit base
IUSE="opengl"
DESCRIPTION="The Glasgow Haskell Compiler"
HOMEPAGE="http://www.haskell.org/ghc/"
SRC_URI="http://www.haskell.org/ghc/dist/${PV}/ghc-${PV}-src.tar.bz2"
LICENSE="as-is"
SLOT="0"
KEYWORDS="x86 ~sparc -ppc -alpha"
PROVIDE="virtual/ghc"
# FIXME: Add USE support for parallel haskell (requires PVM)
# Get PVM from ftp://ftp.netlib.org/pvm3/
DEPEND="virtual/ghc
>=dev-lang/perl-5.6.1
>=sys-devel/gcc-2.95.3
>=sys-devel/make-3.79.1
>=sys-apps/sed-3.02.80
>=sys-devel/flex-2.5.4a
>=dev-libs/gmp-4.1
opengl? ( virtual/opengl
virtual/glu
virtual/glut )"
RDEPEND="virtual/glibc
>=sys-devel/gcc-2.95.3
>=dev-lang/perl-5.6.1
opengl? ( virtual/opengl virtual/glu virtual/glut )"
#determine what version of ghc we have around:
if test -z "${GHC}"; then
GHC=`which ghc`
fi
BASE_GHC_VERSION=`"$GHC" --version | sed 's/^.*version //'`
# If the base GHC version matches wanted one we can skip stage1
if test x${BASE_GHC_VERSION} = x${PV}; then
need_stage1=no
else
need_stage1=yes
fi
#some vars
STAGE1_B="${WORKDIR}/stage1-build"
STAGE2_B="${WORKDIR}/stage2-build"
STAGE1_D="${BUILDDIR}/stage1-image"
src_unpack() {
base_src_unpack
# Create our own lndir if none installed.
local LNDIR
if which lndir; then
LNDIR=lndir
else
# Current directory should be $WORKDIR.
echo "You don\'t seem to have lndir available, building my own"
echo "version..."
cp ${FILESDIR}/lndir.c . || die
make lndir || die
LNDIR=./lndir
fi
# Create build directories.
if test x$need_stage1 = xyes; then
echo '>>> Creating stage 1 build dir'
mkdir ${STAGE1_B} || die
${LNDIR} ${S} ${STAGE1_B} || die
fi
echo '>>> Creating stage 2 build dir'
mkdir ${STAGE2_B} || die
${LNDIR} ${S} ${STAGE2_B} || die
}
src_compile() {
local myconf
use opengl && myconf="--enable-hopengl" || myconf="--disable-hopengl"
if test x$need_stage1 = xyes; then
echo ">>> Bootstrapping intermediate GHC ${PV} using GHC ${BASE_GHC_VERSION}"
pushd "${STAGE1_B}" || die
./configure \
-host="${CHOST}" \
--prefix="${STAGE1_D}/usr" \
--with-ghc="${GHC}" \
--without-happy || die "intermediate stage configure failed"
#parallel make causes trouble
make || die "intermediate stage make failed"
make install || die
GHC=${STAGE1_D}/usr/bin/ghc
popd
fi
pushd "${STAGE2_B}" || die
econf --enable-threaded-rts --with-ghc="${GHC}" ${myconf}|| die "./configure failed"
# the build does not seem to work all that
# well with parallel make
make || die
popd
}
src_install () {
pushd "${STAGE2_B}" || die
make install \
prefix="${D}/usr" \
infodir="${D}/usr/share/info" \
mandir="${D}/usr/share/man" || die
popd
#need to remove ${D} from ghcprof script
cd ${D}/usr/bin
mv ghcprof ghcprof-orig
sed -e 's:$FPTOOLS_TOP_ABS:#$FPTOOLS_TOP_ABS:' ghcprof-orig > ghcprof
chmod a+x ghcprof
rm -f ghcprof-orig
cd ${S}/ghc
dodoc README ANNOUNCE LICENSE VERSION
}
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