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Revision 1.35 - (show annotations) (download)
Fri Nov 16 15:47:17 2012 UTC (21 months ago) by slyfox
Branch: MAIN
Changes since 1.34: +6 -2 lines
Restore dynamic linking of Cabal's ./setup and add building of shared libraries for ghc-7.7+.

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 1.34 2012/09/14 02:51:23 gienah 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 '[]' > "${T}/empty.conf"
42 if version_is_at_least "7.7.20121101" "$(ghc-version)"; then
43 # was moved to bin/ subtree by:
44 # http://www.haskell.org/pipermail/cvs-ghc/2012-September/076546.html
45 echo "$(ghc-libdir)/bin/ghc-pkg" "--global-package-db=${T}/empty.conf"
46 elif version_is_at_least "7.5.20120516" "$(ghc-version)"; then
47 echo "$(ghc-libdir)/ghc-pkg" "--global-package-db=${T}/empty.conf"
48 else
49 echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf"
50 fi
51 }
52
53 # @FUNCTION: ghc-version
54 # @DESCRIPTION:
55 # returns the version of ghc
56 _GHC_VERSION_CACHE=""
57 ghc-version() {
58 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
59 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
60 fi
61 echo "${_GHC_VERSION_CACHE}"
62 }
63
64 # @FUNCTION: ghc-bestcabalversion
65 # @DESCRIPTION:
66 # return the best version of the Cabal library that is available
67 ghc-bestcabalversion() {
68 # We ask portage, not ghc, so that we only pick up
69 # portage-installed cabal versions.
70 local cabalversion="$(ghc-extractportageversion dev-haskell/cabal)"
71 echo "Cabal-${cabalversion}"
72 }
73
74 # @FUNCTION: ghc-sanecabal
75 # @DESCRIPTION:
76 # check if a standalone Cabal version is available for the
77 # currently used ghc; takes minimal version of Cabal as
78 # an optional argument
79 ghc-sanecabal() {
80 local f
81 local version
82 if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
83 for f in $(ghc-confdir)/cabal-*; do
84 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
85 done
86 return 1
87 }
88
89 # @FUNCTION: ghc-supports-shared-libraries
90 # @DESCRIPTION:
91 # checks if ghc is built with support for building
92 # shared libraries (aka '-dynamic' option)
93 ghc-supports-shared-libraries() {
94 $(ghc-getghc) --info | grep "RTS ways" | grep -q "dyn"
95 }
96
97 # @FUNCTION: ghc-extractportageversion
98 # @DESCRIPTION:
99 # extract the version of a portage-installed package
100 ghc-extractportageversion() {
101 local pkg
102 local version
103 pkg="$(best_version $1)"
104 version="${pkg#$1-}"
105 version="${version%-r*}"
106 version="${version%_pre*}"
107 echo "${version}"
108 }
109
110 # @FUNCTION: ghc-libdir
111 # @DESCRIPTION:
112 # returns the library directory
113 _GHC_LIBDIR_CACHE=""
114 ghc-libdir() {
115 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
116 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
117 fi
118 echo "${_GHC_LIBDIR_CACHE}"
119 }
120
121 # @FUNCTION: ghc-confdir
122 # @DESCRIPTION:
123 # returns the (Gentoo) library configuration directory
124 ghc-confdir() {
125 echo "$(ghc-libdir)/gentoo"
126 }
127
128 # @FUNCTION: ghc-localpkgconf
129 # @DESCRIPTION:
130 # returns the name of the local (package-specific)
131 # package configuration file
132 ghc-localpkgconf() {
133 echo "${PF}.conf"
134 }
135
136 # @FUNCTION: ghc-makeghcilib
137 # @DESCRIPTION:
138 # make a ghci foo.o file from a libfoo.a file
139 ghc-makeghcilib() {
140 local outfile
141 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
142 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
143 }
144
145 # @FUNCTION: ghc-package-exists
146 # @DESCRIPTION:
147 # tests if a ghc package exists
148 ghc-package-exists() {
149 $(ghc-getghcpkg) describe "$1" > /dev/null 2>&1
150 }
151
152 # @FUNCTION: ghc-setup-pkg
153 # @DESCRIPTION:
154 # creates a local (package-specific) package
155 # configuration file; the arguments should be
156 # uninstalled package description files, each
157 # containing a single package description; if
158 # no arguments are given, the resulting file is
159 # empty
160 ghc-setup-pkg() {
161 local localpkgconf="${S}/$(ghc-localpkgconf)"
162 echo '[]' > "${localpkgconf}"
163
164 for pkg in $*; do
165 $(ghc-getghcpkgbin) -f "${localpkgconf}" update - --force \
166 < "${pkg}" || die "failed to register ${pkg}"
167 done
168 }
169
170 # @FUNCTION: ghc-fixlibpath
171 # @DESCRIPTION:
172 # fixes the library and import directories path
173 # of the package configuration file
174 ghc-fixlibpath() {
175 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
176 if [[ -n "$2" ]]; then
177 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
178 fi
179 }
180
181 # @FUNCTION: ghc-install-pkg
182 # @DESCRIPTION:
183 # moves the local (package-specific) package configuration
184 # file to its final destination
185 ghc-install-pkg() {
186 mkdir -p "${D}/$(ghc-confdir)"
187 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
188 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
189 }
190
191 # @FUNCTION: ghc-register-pkg
192 # @DESCRIPTION:
193 # registers all packages in the local (package-specific)
194 # package configuration file
195 ghc-register-pkg() {
196 local localpkgconf="$(ghc-confdir)/$1"
197
198 if [[ -f "${localpkgconf}" ]]; then
199 for pkg in $(ghc-listpkg "${localpkgconf}"); do
200 ebegin "Registering ${pkg} "
201 $(ghc-getghcpkgbin) -f "${localpkgconf}" describe "${pkg}" \
202 | $(ghc-getghcpkg) update - --force > /dev/null
203 eend $?
204 done
205 fi
206 }
207
208 # @FUNCTION: ghc-reregister
209 # @DESCRIPTION:
210 # re-adds all available .conf files to the global
211 # package conf file, to be used on a ghc reinstallation
212 ghc-reregister() {
213 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
214 einfo "Re-adding packages (may cause several harmless warnings) ..."
215 PATH="${EPREFIX}/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)"
216 if [ -d "${CONFDIR}" ]; then
217 pushd "${CONFDIR}" > /dev/null
218 for conf in *.conf; do
219 PATH="${EPREFIX}/usr/bin:${PATH}" ghc-register-pkg "${conf}"
220 done
221 popd > /dev/null
222 fi
223 }
224
225 # @FUNCTION: ghc-unregister-pkg
226 # @DESCRIPTION:
227 # unregisters a package configuration file
228 # protected are all packages that are still contained in
229 # another package configuration file
230 ghc-unregister-pkg() {
231 local localpkgconf="$(ghc-confdir)/$1"
232 local i
233 local pkg
234
235 if [[ -f "${localpkgconf}" ]]; then
236 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
237 if ! ghc-package-exists "${pkg}"; then
238 einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
239 else
240 ebegin "Unregistering ${pkg} "
241 $(ghc-getghcpkg) unregister "${pkg}" --force > /dev/null
242 eend $?
243 fi
244 done
245 fi
246 }
247
248 # @FUNCTION: ghc-reverse
249 # @DESCRIPTION:
250 # help-function: reverse a list
251 ghc-reverse() {
252 local result
253 local i
254 for i in $1; do
255 result="${i} ${result}"
256 done
257 echo "${result}"
258 }
259
260 # @FUNCTION: ghc-elem
261 # @DESCRIPTION:
262 # help-function: element-check
263 ghc-elem() {
264 local i
265 for i in $2; do
266 [[ "$1" == "${i}" ]] && return 0
267 done
268 return 1
269 }
270
271 # @FUNCTION: ghc-listpkg
272 # @DESCRIPTION:
273 # show the packages in a package configuration file
274 ghc-listpkg() {
275 local ghcpkgcall
276 local i
277 local extra_flags
278 if version_is_at_least '6.12.3' "$(ghc-version)"; then
279 extra_flags="${extra_flags} -v0"
280 fi
281 for i in $*; do
282 echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \
283 | sed \
284 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
285 -e "s|/.*$||" \
286 -e "s|,| |g" -e "s|[(){}]||g"
287 done
288 }
289
290 # @FUNCTION: ghc-package_pkg_postinst
291 # @DESCRIPTION:
292 # exported function: registers the package-specific package
293 # configuration file
294 ghc-package_pkg_postinst() {
295 ghc-register-pkg "$(ghc-localpkgconf)"
296 }
297
298 # @FUNCTION: ghc-package_pkg_prerm
299 # @DESCRIPTION:
300 # exported function: unregisters the package-specific package
301 # configuration file; a package contained therein is unregistered
302 # only if it the same package is not also contained in another
303 # package configuration file ...
304 ghc-package_pkg_prerm() {
305 ghc-unregister-pkg "$(ghc-localpkgconf)"
306 }
307
308 EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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