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# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
# Brief explanation of the bootstrap logic:
# Previous ghc ebuilds have been split into two: ghc and ghc-bin,
# where ghc-bin was primarily used for bootstrapping purposes.
# From now on, these two ebuilds have been combined, with the
# binary USE flag used to determine whether or not the pre-built
# binary package should be emerged or whether ghc should be compiled
# from source. If the latter, then the relevant ghc-bin for the
# arch in question will be used in the working directory to compile
# ghc from source.
# This solution has the advantage of allowing us to retain the one
# ebuild for both packages, and thus phase out virtual/ghc.
# Note to users of hardened gcc-3.x:
# If you emerge ghc with hardened gcc it should work fine (because we
# turn off the hardened features that would otherwise break ghc).
# However, emerging ghc 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 (or ghc-bin). 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 (or ghc-bin). People using vanilla gcc can switch between
# gcc-3.x and 4.x with no problems.
inherit base autotools bash-completion-r1 eutils flag-o-matic multilib toolchain-funcs ghc-package versionator pax-utils
DESCRIPTION="The Glasgow Haskell Compiler"
# we don't have any binaries yet
# sorted!
#arch_binaries="$arch_binaries alpha? (${PV}-alpha.tbz2 )"
#arch_binaries="$arch_binaries arm? (${PV}-arm.tbz2 )"
arch_binaries="$arch_binaries amd64? (${PV}-amd64-stable-glibc.tbz2 )"
#arch_binaries="$arch_binaries ia64? (${PV}-ia64-fixed-fiw.tbz2 )"
#arch_binaries="$arch_binaries ppc? (${PV}-ppc.tbz2 )"
#arch_binaries="$arch_binaries ppc64? (${PV}-ppc64.tbz2 )"
#arch_binaries="$arch_binaries sparc? (${PV}-sparc.tbz2 )"
arch_binaries="$arch_binaries x86? (${PV}-x86-stable-glibc.tbz2 )"
# various ports:
#arch_binaries="$arch_binaries x86-fbsd? (${PV}-x86-fbsd.tbz2 )"
# 0 - yet
yet_binary() {
case "${ARCH}" in
#alpha) return 0 ;;
# ewarn "ARM binary is built on armv5tel-eabi toolchain. Use with caution."
# return 0
amd64) return 0 ;;
#ppc) return 0 ;;
#ppc64) return 0 ;;
#sparc) return 0 ;;
x86) return 0 ;;
*) return 1 ;;
SRC_URI="!binary? (${PV}/${P}-src.tar.bz2 )"
[[ -n $arch_binaries ]] && SRC_URI+=" !ghcbootstrap? ( $arch_binaries )"
# ghc on ia64 needs gcc to support -mcmodel=medium (or some dark hackery) to avoid TOC overflow
KEYWORDS="~alpha ~amd64 -ia64 ~ppc ~ppc64 ~sparc ~x86 ~x86-fbsd ~amd64-linux ~x86-linux ~ppc-macos ~x86-macos ~sparc-solaris ~x86-solaris"
IUSE="doc ghcbootstrap ghcmakebinary llvm"
IUSE+=" binary" # don't forget about me later!
!kernel_Darwin? ( >=sys-devel/gcc-2.95.3 )
kernel_linux? ( >=sys-devel/binutils-2.17 )
kernel_SunOS? ( >=sys-devel/binutils-2.17 )
# earlier versions than 2.4.2 of haddock only works with older ghc releases
# force dependency on >=gmp-5, even if >=gmp-4.1 would be enough. this is due to
# that we want the binaries to use the latest versioun available, and not to be
# built against gmp-4
# similar for glibc. we have bootstrapped binaries against glibc-2.14
ghcbootstrap? ( >=dev-haskell/alex-2.3
doc? ( app-text/docbook-xml-dtd:4.2
>=dev-libs/libxslt-1.1.2 ) )
!ghcbootstrap? ( kernel_linux? ( >=sys-libs/glibc-2.14 ) )"
PDEPEND="!ghcbootstrap? ( =app-admin/haskell-updater-1.2* )"
llvm? ( sys-devel/llvm )"
append-ghc-cflags() {
local flag compile assemble link
for flag in $*; do
case ${flag} in
compile) compile="yes";;
assemble) assemble="yes";;
link) link="yes";;
[[ ${compile} ]] && GHC_FLAGS="${GHC_FLAGS} -optc${flag}" CFLAGS="${CFLAGS} ${flag}"
[[ ${assemble} ]] && GHC_FLAGS="${GHC_FLAGS} -opta${flag}" CFLAGS="${CFLAGS} ${flag}"
[[ ${link} ]] && GHC_FLAGS="${GHC_FLAGS} -optl${flag}" FILTERED_LDFLAGS="${FILTERED_LDFLAGS} ${flag}";;
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.
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
for flag in ${LDFLAGS}; do
case ${flag} in
# Pass the canary. we don't quite respect LDFLAGS, but we have an excuse!
"-Wl,--hash-style="*) append-ghc-cflags link ${flag};;
# Ignore all other flags
# 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
# prevent from failind building unregisterised ghc:
use ppc64 && append-ghc-cflags compile -mminimal-toc
# fix the similar issue as ppc64 TOC on ia64. ia64 has limited size of small data
# currently ghc fails to build haddock
use ia64 && append-ghc-cflags compile -G0
# Unfortunately driver/split/ghc-split.lprl is dumb
# enough to preserve stack marking for each split object
# and it flags stack marking violation:
# * !WX --- --- usr/lib64/ghc-7.4.1/base-
# * !WX --- --- usr/lib64/ghc-7.4.1/base-
# * !WX --- --- usr/lib64/ghc-7.4.1/base-
case $($(tc-getAS) -v 2>&1 </dev/null) in
*"GNU Binutils"*) # GNU ld
append-ghc-cflags compile assemble -Wa,--noexecstack
# substitutes string $1 to $2 in files $3 $4 ...
relocate_path() {
local from=$1
local to=$2
shift 2
local file=
for file in "$@"
sed -i -e "s|$from|$to|g" \
"$file" || die "path relocation failed for '$file'"
# changes hardcoded ghc paths and updates package index
# $1 - new absolute root path
relocate_ghc() {
local to=$1
# backup original script to use it later after relocation
local gp_back="${T}/ghc-pkg-${PV}-orig"
cp "${WORKDIR}/usr/bin/ghc-pkg-${PV}" "$gp_back" || die "unable to backup ghc-pkg wrapper"
# Relocate from /usr to ${EPREFIX}/usr
relocate_path "/usr" "${to}/usr" \
"${WORKDIR}/usr/bin/ghc-${PV}" \
"${WORKDIR}/usr/bin/ghci-${PV}" \
"${WORKDIR}/usr/bin/ghc-pkg-${PV}" \
"${WORKDIR}/usr/bin/hsc2hs" \
# this one we will use to regenerate cache
# so it shoult point to current tree location
relocate_path "/usr" "${WORKDIR}/usr" "$gp_back"
if use prefix; then
# and insert LD_LIBRARY_PATH entry to EPREFIX dir tree
# TODO: add the same for darwin's CHOST and it's DYLD_
local new_ldpath='LD_LIBRARY_PATH="'${EPREFIX}/$(get_libdir):${EPREFIX}/usr/$(get_libdir)'${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH}"\nexport LD_LIBRARY_PATH'
sed -i -e '2i'"$new_ldpath" \
"${WORKDIR}/usr/bin/ghc-${PV}" \
"${WORKDIR}/usr/bin/ghci-${PV}" \
"${WORKDIR}/usr/bin/ghc-pkg-${PV}" \
"$gp_back" \
"${WORKDIR}/usr/bin/hsc2hs" \
|| die "Adding LD_LIBRARY_PATH for wrappers failed"
# regenerate the binary package cache
"$gp_back" recache || die "failed to update cache after relocation"
rm "$gp_back"
pkg_setup() {
if use ghcbootstrap; then
ewarn "You requested ghc bootstrapping, this is usually only used"
ewarn "by Gentoo developers to make binary .tbz2 packages for"
ewarn "use with the ghc ebuild's USE=\"binary\" feature."
use binary && \
die "USE=\"ghcbootstrap binary\" is not a valid combination."
[[ -z $(type -P ghc) ]] && \
die "Could not find a ghc to bootstrap with."
if ! yet_binary; then
eerror "Please try emerging with USE=ghcbootstrap and report build"
eerror "sucess or failure to the haskell team ("
die "No binary available for '${ARCH}' arch yet, USE=ghcbootstrap"
src_unpack() {
# Create the ${S} dir if we're using the binary version
use binary && mkdir "${S}"
# the Solaris and Darwin binaries from ghc (maeder) need to be
# unpacked separately, so prevent them from being unpacked
local ONLYA=${A}
case ${CHOST} in
*-darwin* | *-solaris*) ONLYA=${P}-src.tar.bz2 ;;
unpack ${ONLYA}
src_prepare() {
if ! use ghcbootstrap; then
# Modify the wrapper script from the binary tarball to use GHC_FLAGS.
# See bug #313635.
sed -i -e "s|\"\$topdir\"|\"\$topdir\" ${GHC_FLAGS}|" \
# allow hardened users use vanilla binary to bootstrap ghc
# ghci uses mmap with rwx protection at it implements dynamic
# linking on it's own (bug #299709)
pax-mark -m "${WORKDIR}/usr/$(get_libdir)/${P}/ghc"
if use binary; then
if use prefix; then
relocate_ghc "${EPREFIX}"
# Move unpacked files to the expected place
mv "${WORKDIR}/usr" "${S}"
if ! use ghcbootstrap; then
case ${CHOST} in
*-darwin* | *-solaris*)
# UPDATE ME for ghc-7
mkdir "${WORKDIR}"/ghc-bin-installer || die
pushd "${WORKDIR}"/ghc-bin-installer > /dev/null || die
use sparc-solaris && unpack ghc-6.10.4-sparc-sun-solaris2.tar.bz2
use x86-solaris && unpack ghc-6.10.4-i386-unknown-solaris2.tar.bz2
use ppc-macos && unpack ghc-6.10.1-powerpc-apple-darwin.tar.bz2
use x86-macos && unpack ghc-6.10.1-i386-apple-darwin.tar.bz2
popd > /dev/null
pushd "${WORKDIR}"/ghc-bin-installer/ghc-6.10.? > /dev/null || die
# fix the binaries so they run, on Solaris we need an
# LD_LIBRARY_PATH which has our prefix libdirs, on
# Darwin we need to replace the frameworks with our libs
# from the prefix fix before installation, because some
# of the tools are actually used during configure/make
if [[ ${CHOST} == *-solaris* ]] ; then
export LD_LIBRARY_PATH="${EPREFIX}/$(get_libdir):${EPREFIX}/usr/$(get_libdir):${LD_LIBRARY_PATH}"
elif [[ ${CHOST} == *-darwin* ]] ; then
pushd utils/haddock/dist-install/build > /dev/null
ln -s Haddock haddock >& /dev/null # fails on IN-sensitive
popd > /dev/null
local readline_framework=GNUreadline.framework/GNUreadline
local gmp_framework=/opt/local/lib/libgmp.3.dylib
local ncurses_file=/opt/local/lib/libncurses.5.dylib
for binary in $(scanmacho -BRE MH_EXECUTE -F '%F' .) ; do
install_name_tool -change \
${readline_framework} \
"${EPREFIX}"/lib/libreadline.dylib \
${binary} || die
install_name_tool -change \
${gmp_framework} \
"${EPREFIX}"/usr/lib/libgmp.dylib \
${binary} || die
install_name_tool -change \
${ncurses_file} \
"${EPREFIX}"/usr/lib/libncurses.dylib \
${binary} || die
# we don't do frameworks!
sed -i \
-e 's/\(frameworks = \)\["GMP"\]/\1[]/g' \
-e 's/\(extraLibraries = \)\["m"\]/\1["m","gmp"]/g' \
rts/ || die
# it is autoconf, but we really don't want to give it too
# much arguments, in fact we do the make in-place anyway
./configure --prefix="${WORKDIR}"/usr || die
make install || die
popd > /dev/null
relocate_ghc "${WORKDIR}"
sed -i -e "s|\"\$topdir\"|\"\$topdir\" ${GHC_FLAGS}|" \
cd "${S}" # otherwise epatch will break
epatch "${FILESDIR}/ghc-7.0.4-CHOST-prefix.patch"
epatch "${FILESDIR}"/${PN}-7.0.4-darwin8.patch
# failed to apply. FIXME
#epatch "${FILESDIR}"/${PN}-6.12.3-mach-o-relocation-limit.patch
epatch "${FILESDIR}"/${PN}-7.4-rc2-macos-prefix-respect-gcc.patch
epatch "${FILESDIR}"/${PN}-7.2.1-freebsd-CHOST.patch
# one mode external depend with unstable ABI be careful to stash it
# avoid external libffi runtime when we build binaries
use ghcmakebinary || epatch "${FILESDIR}"/${PN}-7.4.2-system-libffi.patch
if use prefix; then
# Make configure find docbook-xsl-stylesheets from Prefix
sed -i -e '/^FP_DIR_DOCBOOK_XSL/s:\[.*\]:['"${EPREFIX}"'/usr/share/sgml/docbook/xsl-stylesheets/]:' utils/haddock/doc/ || die
# as we have changed the build system
src_configure() {
if ! use binary; then
# initialize
echo '# Gentoo changes' > mk/
# Put docs into the right place, ie /usr/share/doc/ghc-${PV}
echo "docdir = ${EPREFIX}/usr/share/doc/${P}" >> mk/
echo "htmldir = ${EPREFIX}/usr/share/doc/${P}" >> mk/
# We also need to use the GHC_FLAGS flags when building ghc itself
echo "SRC_HC_OPTS+=${GHC_FLAGS}" >> mk/
echo "SRC_CC_OPTS+=${CFLAGS}" >> mk/
# We can't depend on haddock except when bootstrapping when we
# must build docs and include them into the binary .tbz2 package
if use ghcbootstrap && use doc; then
echo "BUILD_DOCBOOK_PDF = NO" >> mk/
echo "BUILD_DOCBOOK_PS = NO" >> mk/
echo "BUILD_DOCBOOK_HTML = YES" >> mk/
echo "HADDOCK_DOCS = YES" >> mk/
echo "BUILD_DOCBOOK_PDF = NO" >> mk/
echo "BUILD_DOCBOOK_PS = NO" >> mk/
echo "BUILD_DOCBOOK_HTML = NO" >> mk/
echo "HADDOCK_DOCS = NO" >> mk/
# circumvent a very strange bug that seems related with ghc producing
# too much output while being filtered through tee (e.g. due to
# portage logging) reported as bug #111183
echo "SRC_HC_OPTS+=-w" >> mk/
# some arches do not support ELF parsing for ghci module loading
# PPC64: never worked (should be easy to implement)
# alpha: never worked
# arm: unimplemented or never worked
if use alpha || use ppc64 || use arm; then
echo "GhcWithInterpreter=NO" >> mk/
# we have to tell it to build unregisterised on some arches
# ppc64: EvilMangler currently does not understand some TOCs
# ia64: EvilMangler bitrot
if use alpha || use ia64 || use ppc64; then
echo "GhcUnregisterised=YES" >> mk/
echo "GhcWithNativeCodeGen=NO" >> mk/
echo "SplitObjs=NO" >> mk/
echo "GhcRTSWays := debug" >> mk/
echo "GhcNotThreaded=YES" >> mk/
# arm: no EvilMangler support, no NCG support
if use arm; then
echo "GhcUnregisterised=YES" >> mk/
echo "GhcWithNativeCodeGen=NO" >> mk/
# Have "ld -r --relax" problem with split-objs on sparc:
if use sparc; then
echo "SplitObjs=NO" >> mk/
if ! use llvm; then
echo "GhcWithLlvmCodeGen=NO" >> mk/
# allows overriding build flavours for libraries:
# v - vanilla (static libs)
# p - profiled
# dyn - shared libraries
# example: GHC_LIBRARY_WAYS="v dyn"
if [[ -n ${GHC_LIBRARY_WAYS} ]]; then
echo "GhcLibWays=${GHC_LIBRARY_WAYS}" >> mk/
# Get ghc from the unpacked binary .tbz2
# except when bootstrapping we just pick ghc up off the path
if ! use ghcbootstrap; then
export PATH="${WORKDIR}/usr/bin:${PATH}"
# Since GHC 6.12.2 the GHC wrappers store which GCC version GHC was
# compiled with, by saving the path to it. The purpose is to make sure
# that GHC will use the very same gcc version when it compiles haskell
# sources, as the extra-gcc-opts files contains extra gcc options which
# match only this GCC version.
# However, this is not required in Gentoo, as only modern GCCs are used
# (>4).
# Instead, this causes trouble when for example ccache is used during
# compilation, but we don't want the wrappers to point to ccache.
# Due to the above, we simply set GCC to be "gcc". When compiling ghc it
# might point to ccache, once installed it will point to the users
# regular gcc.
econf --with-gcc=gcc || die "econf failed"
fi # ! use binary
src_compile() {
if ! use binary; then
emake all || die "make failed"
fi # ! use binary
src_install() {
if use binary; then
use prefix && mkdir -p "${ED}"
mv "${S}/usr" "${ED}"
# Remove the docs if not requested
if ! use doc; then
rm -rf "${ED}/usr/share/doc/${P}/*/" \
"${ED}/usr/share/doc/${P}/*.html" \
|| die "could not remove docs (P vs PF revision mismatch?)"
local insttarget="install"
# We only built docs if we were bootstrapping, otherwise
# we copy them out of the unpacked binary .tbz2
if use doc && ! use ghcbootstrap; then
mkdir -p "${ED}/usr/share/doc"
mv "${WORKDIR}/usr/share/doc/${P}" "${ED}/usr/share/doc" \
|| die "failed to copy docs"
dodoc "${S}/README" "${S}/ANNOUNCE" "${S}/LICENSE" "${S}/VERSION"
emake -j1 ${insttarget} \
DESTDIR="${D}" \
|| die "make ${insttarget} failed"
# remove wrapper and linker
rm -f "${ED}"/usr/bin/haddock*
# ghci uses mmap with rwx protection at it implements dynamic
# linking on it's own (bug #299709)
# so mark resulting binary
pax-mark -m "${ED}/usr/$(get_libdir)/${P}/ghc"
dobashcomp "${FILESDIR}/ghc-bash-completion"
# path to the package.cache
local package_confdir="${ED}/usr/$(get_libdir)/${P}/package.conf.d"
cp -pR "${package_confdir}"{,.initial} || die "failed to backup intial package.conf.d"
# copy the package.conf, including timestamp, save it so we later can put it
# back before uninstalling, or when upgrading.
cp -p "${PKGCACHE}"{,.shipped} \
|| die "failed to copy package.conf.d/package.cache"
pkg_preinst() {
# have we got an earlier version of ghc installed?
if has_version "<${CATEGORY}/${PF}"; then
pkg_postinst() {
# path to the package.cache
# give the cache a new timestamp, it must be as recent as
# the package.conf.d directory.
touch "${PKGCACHE}"
if [[ "${haskell_updater_warn}" == "1" ]]; then
ewarn "\e[1;31m************************************************************************\e[0m"
ewarn "You have just upgraded from an older version of GHC."
ewarn "You may have to run"
ewarn " 'haskell-updater --upgrade'"
ewarn "to rebuild all ghc-based Haskell libraries."
ewarn "\e[1;31m************************************************************************\e[0m"
pkg_prerm() {
# Be very careful here... Call order when upgrading is (according to PMS):
# * src_install for new package
# * pkg_preinst for new package
# * pkg_postinst for new package
# * pkg_prerm for the package being replaced
# * pkg_postrm for the package being replaced
# so you'll actually be touching the new packages files, not the one you
# uninstall, due to that or installation directory ${P} will be the same for
# both packages.
# Call order for reinstalling is (according to PMS):
# * src_install
# * pkg_preinst
# * pkg_prerm for the package being replaced
# * pkg_postrm for the package being replaced
# * pkg_postinst
# Overwrite the modified package.cache with a copy of the
# original one, so that it will be removed during uninstall.
rm -rf "${PKGCACHE}"
cp -p "${PKGCACHE}"{.shipped,}
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