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# Copyright 1999-2011 Gentoo Foundation |
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# Distributed under the terms of the GNU General Public License v2 |
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# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.31 2011/08/22 04:46:31 vapier Exp $ |
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# @ECLASS: ghc-package.eclass |
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# @MAINTAINER: |
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# "Gentoo's Haskell Language team" <haskell@gentoo.org> |
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# @AUTHOR: |
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# Original Author: Andres Loeh <kosmikus@gentoo.org> |
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# @BLURB: This eclass helps with the Glasgow Haskell Compiler's package configuration utility. |
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# @DESCRIPTION: |
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# Helper eclass to handle ghc installation/upgrade/deinstallation process. |
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inherit versionator |
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# @FUNCTION: ghc-getghc |
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# @DESCRIPTION: |
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# returns the name of the ghc executable |
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ghc-getghc() { |
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type -P ghc |
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} |
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|
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# @FUNCTION: ghc-getghcpkg |
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# @DESCRIPTION: |
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# Internal function determines returns the name of the ghc-pkg executable |
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ghc-getghcpkg() { |
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type -P ghc-pkg |
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} |
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# @FUNCTION: ghc-getghcpkgbin |
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# @DESCRIPTION: |
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# returns the name of the ghc-pkg binary (ghc-pkg |
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# itself usually is a shell script, and we have to |
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# bypass the script under certain circumstances); |
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# for Cabal, we add an empty global package config file, |
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# because for some reason the global package file |
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# must be specified |
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ghc-getghcpkgbin() { |
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if version_is_at_least "6.10" "$(ghc-version)"; then |
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# the ghc-pkg executable changed name in ghc 6.10, as it no longer needs |
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# the wrapper script with the static flags |
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echo '[]' > "${T}/empty.conf" |
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echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf" |
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elif ghc-cabal; then |
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echo '[]' > "${T}/empty.conf" |
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echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf" |
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else |
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echo "$(ghc-libdir)/ghc-pkg.bin" |
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fi |
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} |
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|
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# @FUNCTION: ghc-version |
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# @DESCRIPTION: |
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# returns the version of ghc |
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_GHC_VERSION_CACHE="" |
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ghc-version() { |
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if [[ -z "${_GHC_VERSION_CACHE}" ]]; then |
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_GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)" |
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fi |
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echo "${_GHC_VERSION_CACHE}" |
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} |
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|
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# @FUNCTION: ghc-cabal |
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# @DESCRIPTION: |
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# this function can be used to determine if ghc itself |
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# uses the Cabal package format; it has nothing to do |
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# with the Cabal libraries ... ghc uses the Cabal package |
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# format since version 6.4 |
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ghc-cabal() { |
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version_is_at_least "6.4" "$(ghc-version)" |
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} |
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# @FUNCTION: ghc-bestcabalversion |
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# @DESCRIPTION: |
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# return the best version of the Cabal library that is available |
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ghc-bestcabalversion() { |
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local cabalversion |
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if ghc-cabal; then |
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# We ask portage, not ghc, so that we only pick up |
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# portage-installed cabal versions. |
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cabalversion="$(ghc-extractportageversion dev-haskell/cabal)" |
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echo "Cabal-${cabalversion}" |
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else |
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# older ghc's don't support package versioning |
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echo Cabal |
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fi |
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} |
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# @FUNCTION: ghc-sanecabal |
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# @DESCRIPTION: |
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# check if a standalone Cabal version is available for the |
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# currently used ghc; takes minimal version of Cabal as |
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# an optional argument |
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ghc-sanecabal() { |
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local f |
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local version |
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if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi |
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for f in $(ghc-confdir)/cabal-*; do |
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[[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return |
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done |
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return 1 |
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} |
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# @FUNCTION: ghc-saneghc |
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# @DESCRIPTION: |
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# checks if ghc and ghc-bin are installed in the same version |
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# (if they're both installed); if this is not the case, we |
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# unfortunately cannot trust portage's dependency resolution |
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ghc-saneghc() { |
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local ghcversion |
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local ghcbinversion |
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if [[ "${PN}" == "ghc" || "${PN}" == "ghc-bin" ]]; then |
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return |
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fi |
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if has_version dev-lang/ghc && has_version dev-lang/ghc-bin; then |
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ghcversion="$(ghc-extractportageversion dev-lang/ghc)" |
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ghcbinversion="$(ghc-extractportageversion dev-lang/ghc-bin)" |
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if [[ "${ghcversion}" != "${ghcbinversion}" ]]; then |
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return 1 |
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fi |
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fi |
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return |
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} |
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|
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# @FUNCTION: ghc-supports-shared-libraries |
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# @DESCRIPTION: |
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# checks if ghc is built with support for building |
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# shared libraries (aka '-dynamic' option) |
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ghc-supports-shared-libraries() { |
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$(ghc-getghc) --info | grep "RTS ways" | grep -q "dyn" |
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} |
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# @FUNCTION: ghc-extractportageversion |
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# @DESCRIPTION: |
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# extract the version of a portage-installed package |
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ghc-extractportageversion() { |
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local pkg |
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local version |
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pkg="$(best_version $1)" |
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version="${pkg#$1-}" |
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version="${version%-r*}" |
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version="${version%_pre*}" |
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echo "${version}" |
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} |
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# @FUNCTION: ghc-libdir |
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# @DESCRIPTION: |
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# returns the library directory |
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_GHC_LIBDIR_CACHE="" |
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ghc-libdir() { |
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if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then |
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_GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)" |
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fi |
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echo "${_GHC_LIBDIR_CACHE}" |
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} |
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# @FUNCTION: ghc-confdir |
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# @DESCRIPTION: |
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# returns the (Gentoo) library configuration directory |
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ghc-confdir() { |
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echo "$(ghc-libdir)/gentoo" |
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} |
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# @FUNCTION: ghc-localpkgconf |
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# @DESCRIPTION: |
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# returns the name of the local (package-specific) |
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# package configuration file |
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ghc-localpkgconf() { |
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echo "${PF}.conf" |
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} |
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# @FUNCTION: ghc-makeghcilib |
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# @DESCRIPTION: |
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# make a ghci foo.o file from a libfoo.a file |
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ghc-makeghcilib() { |
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local outfile |
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outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" |
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ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1" |
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} |
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# @FUNCTION: ghc-package-exists |
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# @DESCRIPTION: |
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# tests if a ghc package exists |
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ghc-package-exists() { |
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local describe_flag |
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if version_is_at_least "6.4" "$(ghc-version)"; then |
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describe_flag="describe" |
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else |
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describe_flag="--show-package" |
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fi |
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$(ghc-getghcpkg) "${describe_flag}" "$1" > /dev/null 2>&1 |
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} |
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# @FUNCTION: ghc-setup-pkg |
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# @DESCRIPTION: |
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# creates a local (package-specific) package |
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# configuration file; the arguments should be |
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# uninstalled package description files, each |
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# containing a single package description; if |
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# no arguments are given, the resulting file is |
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# empty |
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ghc-setup-pkg() { |
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local localpkgconf |
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localpkgconf="${S}/$(ghc-localpkgconf)" |
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echo '[]' > "${localpkgconf}" |
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local update_flag |
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if version_is_at_least "6.4" "$(ghc-version)"; then |
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update_flag="update -" |
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else |
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update_flag="--update-package" |
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fi |
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for pkg in $*; do |
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$(ghc-getghcpkgbin) -f "${localpkgconf}" ${update_flag} --force \ |
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< "${pkg}" || die "failed to register ${pkg}" |
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done |
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} |
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# @FUNCTION: ghc-fixlibpath |
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# @DESCRIPTION: |
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# fixes the library and import directories path |
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# of the package configuration file |
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ghc-fixlibpath() { |
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sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)" |
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if [[ -n "$2" ]]; then |
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sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)" |
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fi |
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} |
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# @FUNCTION: ghc-install-pkg |
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# @DESCRIPTION: |
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# moves the local (package-specific) package configuration |
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# file to its final destination |
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ghc-install-pkg() { |
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mkdir -p "${D}/$(ghc-confdir)" |
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cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \ |
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> "${D}/$(ghc-confdir)/$(ghc-localpkgconf)" |
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} |
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# @FUNCTION: ghc-register-pkg |
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# @DESCRIPTION: |
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# registers all packages in the local (package-specific) |
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# package configuration file |
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ghc-register-pkg() { |
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local localpkgconf |
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localpkgconf="$(ghc-confdir)/$1" |
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local update_flag |
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local describe_flag |
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if version_is_at_least "6.4" "$(ghc-version)"; then |
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update_flag="update -" |
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describe_flag="describe" |
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else |
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update_flag="--update-package" |
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describe_flag="--show-package" |
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fi |
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if [[ -f "${localpkgconf}" ]]; then |
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for pkg in $(ghc-listpkg "${localpkgconf}"); do |
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ebegin "Registering ${pkg} " |
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$(ghc-getghcpkgbin) -f "${localpkgconf}" "${describe_flag}" "${pkg}" \ |
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| $(ghc-getghcpkg) ${update_flag} --force > /dev/null |
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eend $? |
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done |
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fi |
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} |
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# @FUNCTION: ghc-reregister |
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# @DESCRIPTION: |
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# re-adds all available .conf files to the global |
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# package conf file, to be used on a ghc reinstallation |
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ghc-reregister() { |
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has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX= |
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einfo "Re-adding packages (may cause several harmless warnings) ..." |
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PATH="${EPREFIX}/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)" |
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if [ -d "${CONFDIR}" ]; then |
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pushd "${CONFDIR}" > /dev/null |
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for conf in *.conf; do |
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PATH="${EPREFIX}/usr/bin:${PATH}" ghc-register-pkg "${conf}" |
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done |
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popd > /dev/null |
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fi |
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} |
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# @FUNCTION: ghc-unregister-pkg |
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# @DESCRIPTION: |
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# unregisters a package configuration file |
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# protected are all packages that are still contained in |
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# another package configuration file |
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ghc-unregister-pkg() { |
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local localpkgconf |
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local i |
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local pkg |
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local unregister_flag |
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localpkgconf="$(ghc-confdir)/$1" |
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|
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if version_is_at_least "6.4" "$(ghc-version)"; then |
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unregister_flag="unregister" |
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else |
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unregister_flag="--remove-package" |
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fi |
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|
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if [[ -f "${localpkgconf}" ]]; then |
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for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do |
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if ! ghc-package-exists "${pkg}"; then |
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einfo "Package ${pkg} is not installed for ghc-$(ghc-version)." |
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else |
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ebegin "Unregistering ${pkg} " |
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$(ghc-getghcpkg) "${unregister_flag}" "${pkg}" --force > /dev/null |
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eend $? |
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fi |
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done |
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fi |
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} |
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# @FUNCTION: ghc-reverse |
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# @DESCRIPTION: |
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# help-function: reverse a list |
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ghc-reverse() { |
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local result |
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local i |
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for i in $1; do |
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result="${i} ${result}" |
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done |
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echo "${result}" |
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} |
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# @FUNCTION: ghc-elem |
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# @DESCRIPTION: |
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# help-function: element-check |
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ghc-elem() { |
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local i |
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for i in $2; do |
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[[ "$1" == "${i}" ]] && return 0 |
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done |
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return 1 |
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} |
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|
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# @FUNCTION: ghc-listpkg |
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# @DESCRIPTION: |
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# show the packages in a package configuration file |
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ghc-listpkg() { |
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local ghcpkgcall |
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local i |
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local extra_flags |
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if version_is_at_least '6.12.3' "$(ghc-version)"; then |
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extra_flags="${extra_flags} -v0" |
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fi |
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for i in $*; do |
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if ghc-cabal; then |
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echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \ |
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| sed \ |
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-e "s|^.*${i}:\([^:]*\).*$|\1|" \ |
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-e "s|/.*$||" \ |
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-e "s|,| |g" -e "s|[(){}]||g" |
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else |
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echo $($(ghc-getghcpkgbin) -l -f "${i}") \ |
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| cut -f2 -d':' \ |
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| sed 's:,: :g' |
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fi |
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done |
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} |
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|
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# @FUNCTION: ghc-package_pkg_setup |
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# @DESCRIPTION: |
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# exported function: check if we have a consistent ghc installation |
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ghc-package_pkg_setup() { |
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if ! ghc-saneghc; then |
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eerror "You have inconsistent versions of dev-lang/ghc and dev-lang/ghc-bin" |
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eerror "installed. Portage currently cannot work correctly with this setup." |
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eerror "There are several possibilities to work around this problem:" |
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eerror "(1) Up/downgrade ghc-bin to the same version as ghc." |
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eerror "(2) Unmerge ghc-bin." |
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eerror "(3) Unmerge ghc." |
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eerror "You probably want option 1 or 2." |
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die "Inconsistent versions of ghc and ghc-bin." |
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fi |
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} |
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|
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# @FUNCTION: ghc-package_pkg_postinst |
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# @DESCRIPTION: |
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# exported function: registers the package-specific package |
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# configuration file |
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ghc-package_pkg_postinst() { |
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ghc-register-pkg "$(ghc-localpkgconf)" |
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} |
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|
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# @FUNCTION: ghc-package_pkg_prerm |
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# @DESCRIPTION: |
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# exported function: unregisters the package-specific package |
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# configuration file; a package contained therein is unregistered |
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# only if it the same package is not also contained in another |
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# package configuration file ... |
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ghc-package_pkg_prerm() { |
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ghc-unregister-pkg "$(ghc-localpkgconf)" |
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} |
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|
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EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm |
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