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# Copyright 1999-2004 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 1.12 2005/07/06 20:20:03 agriffis Exp $ |
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# |
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# Author: Andres Loeh <kosmikus@gentoo.org> |
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# |
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# This eclass helps with the Glasgow Haskell Compiler's package |
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# configuration utility. |
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inherit versionator |
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|
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# promote /opt/ghc/bin to a better position in the search path |
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PATH="/usr/bin:/opt/ghc/bin:${PATH}" |
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|
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# for later configuration using environment variables/ |
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# returns the name of the ghc executable |
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ghc-getghc() { |
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echo "ghc" |
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} |
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|
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# returns the name of the ghc-pkg executable |
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ghc-getghcpkg() { |
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echo "ghc-pkg" |
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} |
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|
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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 the global package config file, |
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# because for some reason that's required |
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ghc-getghcpkgbin() { |
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if ghc-cabal; then |
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echo $(ghc-libdir)/"ghc-pkg.bin" "--global-conf=$(ghc-libdir)/package.conf" |
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else |
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echo $(ghc-libdir)/"ghc-pkg.bin" |
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fi |
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} |
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# returns the version of ghc |
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_GHC_VERSION_CACHE="" |
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ghc-version() { |
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if [[ -z "${_GHC_VERSION_CACHE}" ]]; then |
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_GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')" |
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fi |
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echo "${_GHC_VERSION_CACHE}" |
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} |
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|
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# returns true for ghc >= 6.4 |
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ghc-cabal() { |
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version_is_at_least "6.4" "$(ghc-version)" |
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} |
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# 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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# returns the (Gentoo) library configuration directory |
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ghc-confdir() { |
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echo $(ghc-libdir)/gentoo |
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} |
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# returns the name of the local (package-specific) |
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# package configuration file |
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ghc-localpkgconf() { |
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echo "${PF}.conf" |
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} |
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|
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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 $1 |
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} |
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# creates a local (package-specific) package |
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# configuration file; the arguments should be |
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# uninstalled package description files, each |
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# containing a single package description; if |
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# no arguments are given, the resulting file is |
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# empty |
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ghc-setup-pkg() { |
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local localpkgconf |
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localpkgconf="${S}/$(ghc-localpkgconf)" |
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echo '[]' > ${localpkgconf} |
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for pkg in $*; do |
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$(ghc-getghcpkgbin) -f ${localpkgconf} -u --force \ |
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< ${pkg} || die "failed to register ${pkg}" |
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done |
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} |
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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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# 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)/$(ghc-localpkgconf) |
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} |
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# registers all packages in the local (package-specific) |
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# package configuration file |
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ghc-register-pkg() { |
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local localpkgconf |
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localpkgconf="$(ghc-confdir)/$1" |
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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} -s ${pkg} \ |
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| $(ghc-getghcpkg) -u --force > /dev/null |
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eend $? |
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done |
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fi |
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} |
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# re-adds all available .conf files to the global |
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# package conf file, to be used on a ghc reinstallation |
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ghc-reregister() { |
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einfo "Re-adding packages ..." |
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einfo "(This may cause several warnings, but they should be harmless.)" |
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if [ -d "$(ghc-confdir)" ]; then |
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pushd $(ghc-confdir) > /dev/null |
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for conf in *.conf; do |
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einfo "Processing ${conf} ..." |
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ghc-register-pkg ${conf} |
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done |
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popd > /dev/null |
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fi |
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} |
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# unregisters ... |
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ghc-unregister-pkg() { |
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local localpkgconf |
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localpkgconf="$(ghc-confdir)/$1" |
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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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ebegin "Unregistering ${pkg} " |
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$(ghc-getghcpkg) -r ${pkg} --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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# help-function: reverse a list |
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ghc-reverse() { |
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local result |
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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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# show the packages in a package configuration file |
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ghc-listpkg() { |
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local ghcpkgcall |
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if ghc-cabal; then |
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echo $($(ghc-getghcpkg) list -f $1) \ |
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| sed \ |
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-e "s|^.*${f}:\([^:]*\).*$|\1|" \ |
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-e "s|/.*$||" \ |
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-e "s|,| |g" -e "s|[()]||g" |
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else |
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echo $($(ghc-getghcpkgbin) -l -f $1) \ |
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| cut -f2 -d':' \ |
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| sed 's:,: :g' |
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fi |
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} |
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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 $(ghc-localpkgconf) |
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} |
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# exported function: unregisters the package-specific |
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# package configuration file, under the condition that |
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# after removal, no other instances of the package will |
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# be left (necessary check because ghc packages are not |
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# versioned) |
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ghc-package_pkg_prerm() { |
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has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \ |
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|| ghc-unregister-pkg $(ghc-localpkgconf) |
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} |
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|
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EXPORT_FUNCTIONS pkg_postinst pkg_prerm |
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