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Revision 1.33 - (show annotations) (download)
Mon Apr 9 18:08:45 2012 UTC (2 years, 8 months ago) by slyfox
Branch: MAIN
Changes since 1.32: +26 -122 lines
Remove outdated bits for <ghc-6.10 and <cabal-1.8. Switch from 'eerror' to 'eqawarn' as suggested by PaweĊ‚ Hajdan, Jr. (http://www.gossamer-threads.com/lists/gentoo/dev/251259). Install empty '.conf' files for binaries to help 'haskell-updater' pick binaries built with onder haskell toolchain on ghc upgrade.

1 # Copyright 1999-2012 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.32 2011/11/24 00:04:13 vapier Exp $
4
5 # @ECLASS: ghc-package.eclass
6 # @MAINTAINER:
7 # "Gentoo's Haskell Language team" <haskell@gentoo.org>
8 # @AUTHOR:
9 # Original Author: Andres Loeh <kosmikus@gentoo.org>
10 # @BLURB: This eclass helps with the Glasgow Haskell Compiler's package configuration utility.
11 # @DESCRIPTION:
12 # Helper eclass to handle ghc installation/upgrade/deinstallation process.
13
14 inherit versionator
15
16 # @FUNCTION: ghc-getghc
17 # @DESCRIPTION:
18 # returns the name of the ghc executable
19 ghc-getghc() {
20 type -P ghc
21 }
22
23 # @FUNCTION: ghc-getghcpkg
24 # @DESCRIPTION:
25 # Internal function determines returns the name of the ghc-pkg executable
26 ghc-getghcpkg() {
27 type -P ghc-pkg
28 }
29
30 # @FUNCTION: ghc-getghcpkgbin
31 # @DESCRIPTION:
32 # returns the name of the ghc-pkg binary (ghc-pkg
33 # itself usually is a shell script, and we have to
34 # bypass the script under certain circumstances);
35 # for Cabal, we add an empty global package config file,
36 # because for some reason the global package file
37 # must be specified
38 ghc-getghcpkgbin() {
39 # the ghc-pkg executable changed name in ghc 6.10, as it no longer needs
40 # the wrapper script with the static flags
41 echo '[]' > "${T}/empty.conf"
42 echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf"
43 }
44
45 # @FUNCTION: ghc-version
46 # @DESCRIPTION:
47 # returns the version of ghc
48 _GHC_VERSION_CACHE=""
49 ghc-version() {
50 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
51 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
52 fi
53 echo "${_GHC_VERSION_CACHE}"
54 }
55
56 # @FUNCTION: ghc-bestcabalversion
57 # @DESCRIPTION:
58 # return the best version of the Cabal library that is available
59 ghc-bestcabalversion() {
60 # We ask portage, not ghc, so that we only pick up
61 # portage-installed cabal versions.
62 local cabalversion="$(ghc-extractportageversion dev-haskell/cabal)"
63 echo "Cabal-${cabalversion}"
64 }
65
66 # @FUNCTION: ghc-sanecabal
67 # @DESCRIPTION:
68 # check if a standalone Cabal version is available for the
69 # currently used ghc; takes minimal version of Cabal as
70 # an optional argument
71 ghc-sanecabal() {
72 local f
73 local version
74 if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
75 for f in $(ghc-confdir)/cabal-*; do
76 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
77 done
78 return 1
79 }
80
81 # @FUNCTION: ghc-supports-shared-libraries
82 # @DESCRIPTION:
83 # checks if ghc is built with support for building
84 # shared libraries (aka '-dynamic' option)
85 ghc-supports-shared-libraries() {
86 $(ghc-getghc) --info | grep "RTS ways" | grep -q "dyn"
87 }
88
89 # @FUNCTION: ghc-extractportageversion
90 # @DESCRIPTION:
91 # extract the version of a portage-installed package
92 ghc-extractportageversion() {
93 local pkg
94 local version
95 pkg="$(best_version $1)"
96 version="${pkg#$1-}"
97 version="${version%-r*}"
98 version="${version%_pre*}"
99 echo "${version}"
100 }
101
102 # @FUNCTION: ghc-libdir
103 # @DESCRIPTION:
104 # returns the library directory
105 _GHC_LIBDIR_CACHE=""
106 ghc-libdir() {
107 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
108 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
109 fi
110 echo "${_GHC_LIBDIR_CACHE}"
111 }
112
113 # @FUNCTION: ghc-confdir
114 # @DESCRIPTION:
115 # returns the (Gentoo) library configuration directory
116 ghc-confdir() {
117 echo "$(ghc-libdir)/gentoo"
118 }
119
120 # @FUNCTION: ghc-localpkgconf
121 # @DESCRIPTION:
122 # returns the name of the local (package-specific)
123 # package configuration file
124 ghc-localpkgconf() {
125 echo "${PF}.conf"
126 }
127
128 # @FUNCTION: ghc-makeghcilib
129 # @DESCRIPTION:
130 # make a ghci foo.o file from a libfoo.a file
131 ghc-makeghcilib() {
132 local outfile
133 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
134 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
135 }
136
137 # @FUNCTION: ghc-package-exists
138 # @DESCRIPTION:
139 # tests if a ghc package exists
140 ghc-package-exists() {
141 $(ghc-getghcpkg) describe "$1" > /dev/null 2>&1
142 }
143
144 # @FUNCTION: ghc-setup-pkg
145 # @DESCRIPTION:
146 # creates a local (package-specific) package
147 # configuration file; the arguments should be
148 # uninstalled package description files, each
149 # containing a single package description; if
150 # no arguments are given, the resulting file is
151 # empty
152 ghc-setup-pkg() {
153 local localpkgconf="${S}/$(ghc-localpkgconf)"
154 echo '[]' > "${localpkgconf}"
155
156 for pkg in $*; do
157 $(ghc-getghcpkgbin) -f "${localpkgconf}" update - --force \
158 < "${pkg}" || die "failed to register ${pkg}"
159 done
160 }
161
162 # @FUNCTION: ghc-fixlibpath
163 # @DESCRIPTION:
164 # fixes the library and import directories path
165 # of the package configuration file
166 ghc-fixlibpath() {
167 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
168 if [[ -n "$2" ]]; then
169 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
170 fi
171 }
172
173 # @FUNCTION: ghc-install-pkg
174 # @DESCRIPTION:
175 # moves the local (package-specific) package configuration
176 # file to its final destination
177 ghc-install-pkg() {
178 mkdir -p "${D}/$(ghc-confdir)"
179 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
180 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
181 }
182
183 # @FUNCTION: ghc-register-pkg
184 # @DESCRIPTION:
185 # registers all packages in the local (package-specific)
186 # package configuration file
187 ghc-register-pkg() {
188 local localpkgconf="$(ghc-confdir)/$1"
189
190 if [[ -f "${localpkgconf}" ]]; then
191 for pkg in $(ghc-listpkg "${localpkgconf}"); do
192 ebegin "Registering ${pkg} "
193 $(ghc-getghcpkgbin) -f "${localpkgconf}" describe "${pkg}" \
194 | $(ghc-getghcpkg) update - --force > /dev/null
195 eend $?
196 done
197 fi
198 }
199
200 # @FUNCTION: ghc-reregister
201 # @DESCRIPTION:
202 # re-adds all available .conf files to the global
203 # package conf file, to be used on a ghc reinstallation
204 ghc-reregister() {
205 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
206 einfo "Re-adding packages (may cause several harmless warnings) ..."
207 PATH="${EPREFIX}/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)"
208 if [ -d "${CONFDIR}" ]; then
209 pushd "${CONFDIR}" > /dev/null
210 for conf in *.conf; do
211 PATH="${EPREFIX}/usr/bin:${PATH}" ghc-register-pkg "${conf}"
212 done
213 popd > /dev/null
214 fi
215 }
216
217 # @FUNCTION: ghc-unregister-pkg
218 # @DESCRIPTION:
219 # unregisters a package configuration file
220 # protected are all packages that are still contained in
221 # another package configuration file
222 ghc-unregister-pkg() {
223 local localpkgconf="$(ghc-confdir)/$1"
224 local i
225 local pkg
226
227 if [[ -f "${localpkgconf}" ]]; then
228 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
229 if ! ghc-package-exists "${pkg}"; then
230 einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
231 else
232 ebegin "Unregistering ${pkg} "
233 $(ghc-getghcpkg) unregister "${pkg}" --force > /dev/null
234 eend $?
235 fi
236 done
237 fi
238 }
239
240 # @FUNCTION: ghc-reverse
241 # @DESCRIPTION:
242 # help-function: reverse a list
243 ghc-reverse() {
244 local result
245 local i
246 for i in $1; do
247 result="${i} ${result}"
248 done
249 echo "${result}"
250 }
251
252 # @FUNCTION: ghc-elem
253 # @DESCRIPTION:
254 # help-function: element-check
255 ghc-elem() {
256 local i
257 for i in $2; do
258 [[ "$1" == "${i}" ]] && return 0
259 done
260 return 1
261 }
262
263 # @FUNCTION: ghc-listpkg
264 # @DESCRIPTION:
265 # show the packages in a package configuration file
266 ghc-listpkg() {
267 local ghcpkgcall
268 local i
269 local extra_flags
270 if version_is_at_least '6.12.3' "$(ghc-version)"; then
271 extra_flags="${extra_flags} -v0"
272 fi
273 for i in $*; do
274 echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \
275 | sed \
276 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
277 -e "s|/.*$||" \
278 -e "s|,| |g" -e "s|[(){}]||g"
279 done
280 }
281
282 # @FUNCTION: ghc-package_pkg_postinst
283 # @DESCRIPTION:
284 # exported function: registers the package-specific package
285 # configuration file
286 ghc-package_pkg_postinst() {
287 ghc-register-pkg "$(ghc-localpkgconf)"
288 }
289
290 # @FUNCTION: ghc-package_pkg_prerm
291 # @DESCRIPTION:
292 # exported function: unregisters the package-specific package
293 # configuration file; a package contained therein is unregistered
294 # only if it the same package is not also contained in another
295 # package configuration file ...
296 ghc-package_pkg_prerm() {
297 ghc-unregister-pkg "$(ghc-localpkgconf)"
298 }
299
300 EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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