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# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-lang/ghc-bin/ghc-bin-6.4.2-r1.ebuild,v 1.4 2007/12/13 15:59:54 dcoutts Exp $
# Note to users of hardened gcc-3.x:
#
# If you emerge ghc-bin with hardened gcc it should work fine (because
# we turn off the hardened features that would otherwise break ghc).
# However, emerging ghc-bin while using a vanilla gcc and then switching
# to hardened gcc (using gcc-config) will leave you with a broken ghc. To
# fix it you would need to either switch back to vanilla gcc or re-emerge
# ghc-bin (or ghc). Note that also if you are using hardened gcc-3.x and
# you switch to gcc-4.x that this will also break ghc and you'll need to
# re-emerge ghc-bin (or ghc). People using vanilla gcc can switch between
# gcc-3.x and 4.x with no problems.
inherit base multilib flag-o-matic toolchain-funcs ghc-package
DESCRIPTION="Glasgow Haskell Compiler"
HOMEPAGE="http://www.haskell.org/ghc/"
# list all arches for proper digest building:
SRC_URI="ppc64? ( mirror://gentoo/${P}-r1-ppc64.tbz2 )"
LICENSE="as-is"
KEYWORDS="ppc64"
SLOT="0"
IUSE="" # use the non-binary version if you want to have more choice
RESTRICT="strip" # already stripped
LOC="/opt/ghc"
DEPEND=""
RDEPEND=">=dev-lang/perl-5.6.1
>=sys-devel/gcc-2.95.3
>=dev-libs/gmp-4.1
=sys-libs/readline-5*"
S="${WORKDIR}"
append-ghc-cflags() {
local flag compile assemble link
for flag in $*; do
case ${flag} in
compile) compile="yes";;
assemble) assemble="yes";;
link) link="yes";;
*)
[[ ${compile} ]] && GHC_CFLAGS="${GHC_CFLAGS} -optc${flag}"
[[ ${assemble} ]] && GHC_CFLAGS="${GHC_CFLAGS} -opta${flag}"
[[ ${link} ]] && GHC_CFLAGS="${GHC_CFLAGS} -optl${flag}";;
esac
done
}
ghc_setup_cflags() {
# We need to be very careful with the CFLAGS we ask ghc to pass through to
# gcc. There are plenty of flags which will make gcc produce output that
# breaks ghc in various ways. The main ones we want to pass through are
# -mcpu / -march flags. These are important for arches like alpha & sparc.
# We also use these CFLAGS for building the C parts of ghc, ie the rts.
strip-flags
strip-unsupported-flags
filter-flags -fPIC
GHC_CFLAGS=""
for flag in ${CFLAGS}; do
case ${flag} in
# Ignore extra optimisation (ghc passes -O to gcc anyway)
# -O2 and above break on too many systems
-O*) ;;
# Arch and ABI flags are what we're really after
-m*) append-ghc-cflags compile assemble ${flag};;
# Debugging flags don't help either. You can't debug Haskell code
# at the C source level and the mangler discards the debug info.
-g*) ;;
# Ignore all other flags, including all -f* flags
esac
done
# hardened-gcc needs to be disabled, because the mangler doesn't accept
# its output.
gcc-specs-pie && append-ghc-cflags compile link -nopie
gcc-specs-ssp && append-ghc-cflags compile -fno-stack-protector
# We also add -Wa,--noexecstack to get ghc to generate .o files with
# non-exectable stack. This it a hack until ghc does it itself properly.
append-ghc-cflags assemble "-Wa,--noexecstack"
}
ghc_setup_wrapper() {
echo '#!/bin/bash'
echo "GHCBIN=\"${LOC}/$(get_libdir)/ghc-$1/ghc-$1\";"
echo "TOPDIROPT=\"-B${LOC}/$(get_libdir)/ghc-$1\";"
echo "GHC_CFLAGS=\"${GHC_CFLAGS}\";"
echo '# Mini-driver for GHC'
echo 'exec $GHCBIN $TOPDIROPT $GHC_CFLAGS ${1+"$@"}'
}
src_unpack() {
base_src_unpack
# Setup the ghc wrapper script
ghc_setup_cflags
ghc_setup_wrapper ${PV} > "${S}/usr/bin/ghc-${PV}"
# Relocate from /usr to /opt/ghc
sed -i -e "s|/usr|${LOC}|g" \
"${S}/usr/bin/ghci-${PV}" \
"${S}/usr/bin/ghc-pkg-${PV}" \
"${S}/usr/bin/hsc2hs" \
"${S}/usr/$(get_libdir)/ghc-${PV}/package.conf"
sed -i -e "s|/usr/$(get_libdir)|${LOC}/$(get_libdir)|" \
"${S}/usr/bin/ghcprof"
}
src_compile() {
true
}
src_install () {
mkdir "${D}/opt"
mv "${S}/usr" "${D}/opt/ghc"
doenvd "${FILESDIR}/10ghc"
}
pkg_postinst () {
ghc-reregister
ewarn "IMPORTANT:"
ewarn "If you have upgraded from another version of ghc-bin or"
ewarn "if you have switched from ghc to ghc-bin, please run:"
ewarn " /opt/ghc/sbin/ghc-updater"
ewarn "to re-merge all ghc-based Haskell libraries."
}
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