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346 lines
9.7 KiB
346 lines
9.7 KiB
# Copyright 1999-2015 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Id$
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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 multiprocessing 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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# @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 "7.9.20141222" "$(ghc-version)"; then
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# ghc-7.10 stopped supporting single-file database
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local empty_db="${T}/empty.conf.d" ghc_pkg="$(ghc-libdir)/bin/ghc-pkg"
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if [[ ! -d ${empty_db} ]]; then
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"${ghc_pkg}" init "${empty_db}" || die "Failed to initialize empty global db"
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fi
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echo "$(ghc-libdir)/bin/ghc-pkg" "--global-package-db=${empty_db}"
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elif version_is_at_least "7.7.20121101" "$(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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# was moved to bin/ subtree by:
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# http://www.haskell.org/pipermail/cvs-ghc/2012-September/076546.html
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echo '[]' > "${T}/empty.conf"
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echo "$(ghc-libdir)/bin/ghc-pkg" "--global-package-db=${T}/empty.conf"
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elif version_is_at_least "7.5.20120516" "$(ghc-version)"; then
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echo '[]' > "${T}/empty.conf"
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echo "$(ghc-libdir)/ghc-pkg" "--global-package-db=${T}/empty.conf"
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else
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echo '[]' > "${T}/empty.conf"
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echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf"
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fi
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}
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# @FUNCTION: ghc-version
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# @DESCRIPTION:
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# returns upstream version of ghc
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# as reported by '--numeric-version'
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# Examples: "7.10.2", "7.9.20141222"
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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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# @FUNCTION: ghc-pm-version
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# @DESCRIPTION:
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# returns package manager(PM) version of ghc
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# as reported by '$(best_version)'
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# Examples: "PM:7.10.2", "PM:7.10.2_rc1", "PM:7.8.4-r4"
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_GHC_PM_VERSION_CACHE=""
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ghc-pm-version() {
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local pm_ghc_p
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if [[ -z "${_GHC_PM_VERSION_CACHE}" ]]; then
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pm_ghc_p=$(best_version dev-lang/ghc)
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_GHC_PM_VERSION_CACHE="PM:${pm_ghc_p#dev-lang/ghc-}"
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fi
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echo "${_GHC_PM_VERSION_CACHE}"
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}
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# @FUNCTION: ghc-cabal-version
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# @DESCRIPTION:
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# return version of the Cabal library bundled with ghc
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ghc-cabal-version() {
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if version_is_at_least "7.9.20141222" "$(ghc-version)"; then
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# outputs in format: 'version: 1.18.1.5'
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set -- `$(ghc-getghcpkg) --package-db=$(ghc-libdir)/package.conf.d.initial field Cabal version`
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echo "$2"
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else
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local cabal_package=`echo "$(ghc-libdir)"/Cabal-*`
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# /path/to/ghc/Cabal-${VER} -> ${VER}
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echo "${cabal_package/*Cabal-/}"
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fi
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}
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# @FUNCTION: ghc-is-dynamic
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# @DESCRIPTION:
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# checks if ghc is built against dynamic libraries
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# binaries linked against GHC library (and using plugin loading)
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# have to be linked the same way:
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# https://ghc.haskell.org/trac/ghc/ticket/10301
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ghc-is-dynamic() {
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$(ghc-getghc) --info | grep "GHC Dynamic" | grep -q "YES"
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}
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# @FUNCTION: ghc-supports-shared-libraries
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# @DESCRIPTION:
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# checks if ghc is built with support for building
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# shared libraries (aka '-dynamic' option)
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ghc-supports-shared-libraries() {
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$(ghc-getghc) --info | grep "RTS ways" | grep -q "dyn"
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}
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# @FUNCTION: ghc-supports-threaded-runtime
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# @DESCRIPTION:
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# checks if ghc is built with support for threaded
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# runtime (aka '-threaded' option)
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ghc-supports-threaded-runtime() {
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$(ghc-getghc) --info | grep "RTS ways" | grep -q "thr"
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}
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# @FUNCTION: ghc-supports-smp
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# @DESCRIPTION:
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# checks if ghc is built with support for multiple cores runtime
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ghc-supports-smp() {
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$(ghc-getghc) --info | grep "Support SMP" | grep -q "YES"
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}
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# @FUNCTION: ghc-supports-interpreter
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# @DESCRIPTION:
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# checks if ghc has interpreter mode (aka GHCi)
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# It usually means that ghc supports for template haskell.
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ghc-supports-interpreter() {
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$(ghc-getghc) --info | grep "Have interpreter" | grep -q "YES"
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}
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# @FUNCTION: ghc-supports-parallel-make
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# @DESCRIPTION:
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# checks if ghc has support for '--make -j' mode
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# The option was introduced in ghc-7.8-rc1.
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ghc-supports-parallel-make() {
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$(ghc-getghc) --info | grep "Support parallel --make" | grep -q "YES"
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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-make-args
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# @DESCRIPTION:
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# Returns default arguments passed along 'ghc --make'
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# build mode. Used mainly to enable parallel build mode.
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ghc-make-args() {
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local ghc_make_args=()
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# parallel on all available cores
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if ghc-supports-smp && ghc-supports-parallel-make; then
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# It should have been just -j$(makeopts_jobs)
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# but GHC does not yet have nice defaults:
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# https://ghc.haskell.org/trac/ghc/ticket/9221#comment:57
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# SMP is a requirement for parallel GC's gen0
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# 'qb' balancing.
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echo "-j$(makeopts_jobs) +RTS -A256M -qb0 -RTS"
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ghc_make_args=()
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fi
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echo "${ghc_make_args[@]}"
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}
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# @FUNCTION: ghc-confdir
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# @DESCRIPTION:
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# returns the (Gentoo) library configuration directory, we
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# store here a hint for 'haskell-updater' about packages
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# installed for old ghc versions and current ones.
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ghc-confdir() {
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echo "$(ghc-libdir)/gentoo"
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}
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# @FUNCTION: ghc-package-db
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# @DESCRIPTION:
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# returns the global package database directory
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ghc-package-db() {
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echo "$(ghc-libdir)/package.conf.d"
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}
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# @FUNCTION: ghc-localpkgconfd
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# @DESCRIPTION:
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# returns the name of the local (package-specific)
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# package configuration file
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ghc-localpkgconfd() {
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echo "${PF}.conf.d"
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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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$(ghc-getghcpkg) describe "$1" > /dev/null 2>&1
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}
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# @FUNCTION: check-for-collisions
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# @DESCRIPTION:
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# makes sure no packages
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# have the same version as initial package setup
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check-for-collisions() {
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local localpkgconf=$1
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local checked_pkg
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local initial_pkg_db="$(ghc-libdir)/package.conf.d.initial"
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for checked_pkg in `$(ghc-getghcpkgbin) -f "${localpkgconf}" list --simple-output`
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do
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# should return empty output
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local collided=`$(ghc-getghcpkgbin) -f ${initial_pkg_db} list --simple-output "${checked_pkg}"`
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if [[ -n ${collided} ]]; then
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eerror "Cabal package '${checked_pkg}' is shipped with '$(ghc-pm-version)' ('$(ghc-version)')."
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eerror "Ebuild author forgot an entry in CABAL_CORE_LIB_GHC_PV='${CABAL_CORE_LIB_GHC_PV}'."
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eerror "Found in ${initial_pkg_db}."
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die
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fi
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done
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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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local pkg_config_file=$1
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local localpkgconf="${T}/$(ghc-localpkgconfd)"
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local pkg_path pkg pkg_db="${D}/$(ghc-package-db)" hint_db="${D}/$(ghc-confdir)"
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$(ghc-getghcpkgbin) init "${localpkgconf}" || die "Failed to initialize empty local db"
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$(ghc-getghcpkgbin) -f "${localpkgconf}" update - --force \
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< "${pkg_config_file}" || die "failed to register ${pkg}"
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check-for-collisions "${localpkgconf}"
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mkdir -p "${pkg_db}" || die
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for pkg_path in "${localpkgconf}"/*.conf; do
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pkg=$(basename "${pkg_path}")
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cp "${pkg_path}" "${pkg_db}/${pkg}" || die
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done
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mkdir -p "${hint_db}" || die
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cp "${pkg_config_file}" "${hint_db}/${PF}.conf" || die
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chmod 0644 "${hint_db}/${PF}.conf" || die
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}
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# @FUNCTION: ghc-recache-db
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# @DESCRIPTION:
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# updates 'package.cache' binary cacne for registered '*.conf'
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# packages
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ghc-recache-db() {
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einfo "Recaching GHC package DB"
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$(ghc-getghcpkg) recache
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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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ghc-recache-db
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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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ghc-recache-db
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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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ghc-unregister-pkg() {
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ghc-recache-db
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}
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# @FUNCTION: ghc-pkgdeps
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# @DESCRIPTION:
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# exported function: loads a package dependency in a form
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# cabal_package version
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ghc-pkgdeps() {
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echo $($(ghc-getghcpkg) describe "${1}") \
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| sed \
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-e '/depends/,/^.*:/ !d' \
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-e 's/\(.*\)-\(.*\)-\(.*\)/\1 \2/' \
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-e 's/^.*://g'
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}
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# @FUNCTION: ghc-package_pkg_postinst
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# @DESCRIPTION:
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# updates package.cache after package install
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ghc-package_pkg_postinst() {
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ghc-recache-db
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}
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# @FUNCTION: ghc-package_pkg_prerm
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# @DESCRIPTION:
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# updates package.cache after package deinstall
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ghc-package_pkg_prerm() {
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ewarn "ghc-package.eclass: 'ghc-package_pkg_prerm()' is a noop"
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ewarn "ghc-package.eclass: consider 'haskell-cabal_pkg_postrm()' instead"
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}
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# @FUNCTION: ghc-package_pkg_postrm
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# @DESCRIPTION:
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# updates package.cache after package deinstall
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ghc-package_pkg_postrm() {
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ghc-recache-db
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}
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