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Revision 1.37 - (show annotations) (download)
Sat May 11 12:46:32 2013 UTC (19 months, 2 weeks ago) by slyfox
Branch: MAIN
Changes since 1.36: +16 -1 lines
Added 'ghc-supports-smp' and 'ghc-supports-dynamic-by-default' helpers. Added hint for users to run 'haskell-updater' if configure phase failed.

1 # Copyright 1999-2013 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 1.36 2013/01/06 13:06:35 slyfox 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-supports-threaded-runtime
98 # @DESCRIPTION:
99 # checks if ghc is built with support for threaded
100 # runtime (aka '-threaded' option)
101 ghc-supports-threaded-runtime() {
102 $(ghc-getghc) --info | grep "RTS ways" | grep -q "thr"
103 }
104
105 # @FUNCTION: ghc-supports-smp
106 # @DESCRIPTION:
107 # checks if ghc is built with support for multiple cores runtime
108 ghc-supports-smp() {
109 $(ghc-getghc) --info | grep "Support SMP" | grep -q "YES"
110 }
111
112 # @FUNCTION: ghc-supports-dynamic-by-default
113 # @DESCRIPTION:
114 # checks if ghc link against shared haskell libraries by default
115 ghc-supports-dynamic-by-default() {
116 $(ghc-getghc) --info | grep "Dynamic by default" | grep -q "YES"
117 }
118
119
120 # @FUNCTION: ghc-extractportageversion
121 # @DESCRIPTION:
122 # extract the version of a portage-installed package
123 ghc-extractportageversion() {
124 local pkg
125 local version
126 pkg="$(best_version $1)"
127 version="${pkg#$1-}"
128 version="${version%-r*}"
129 version="${version%_pre*}"
130 echo "${version}"
131 }
132
133 # @FUNCTION: ghc-libdir
134 # @DESCRIPTION:
135 # returns the library directory
136 _GHC_LIBDIR_CACHE=""
137 ghc-libdir() {
138 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
139 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
140 fi
141 echo "${_GHC_LIBDIR_CACHE}"
142 }
143
144 # @FUNCTION: ghc-confdir
145 # @DESCRIPTION:
146 # returns the (Gentoo) library configuration directory
147 ghc-confdir() {
148 echo "$(ghc-libdir)/gentoo"
149 }
150
151 # @FUNCTION: ghc-localpkgconf
152 # @DESCRIPTION:
153 # returns the name of the local (package-specific)
154 # package configuration file
155 ghc-localpkgconf() {
156 echo "${PF}.conf"
157 }
158
159 # @FUNCTION: ghc-makeghcilib
160 # @DESCRIPTION:
161 # make a ghci foo.o file from a libfoo.a file
162 ghc-makeghcilib() {
163 local outfile
164 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
165 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
166 }
167
168 # @FUNCTION: ghc-package-exists
169 # @DESCRIPTION:
170 # tests if a ghc package exists
171 ghc-package-exists() {
172 $(ghc-getghcpkg) describe "$1" > /dev/null 2>&1
173 }
174
175 # @FUNCTION: ghc-setup-pkg
176 # @DESCRIPTION:
177 # creates a local (package-specific) package
178 # configuration file; the arguments should be
179 # uninstalled package description files, each
180 # containing a single package description; if
181 # no arguments are given, the resulting file is
182 # empty
183 ghc-setup-pkg() {
184 local localpkgconf="${S}/$(ghc-localpkgconf)"
185 echo '[]' > "${localpkgconf}"
186
187 for pkg in $*; do
188 $(ghc-getghcpkgbin) -f "${localpkgconf}" update - --force \
189 < "${pkg}" || die "failed to register ${pkg}"
190 done
191 }
192
193 # @FUNCTION: ghc-fixlibpath
194 # @DESCRIPTION:
195 # fixes the library and import directories path
196 # of the package configuration file
197 ghc-fixlibpath() {
198 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
199 if [[ -n "$2" ]]; then
200 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
201 fi
202 }
203
204 # @FUNCTION: ghc-install-pkg
205 # @DESCRIPTION:
206 # moves the local (package-specific) package configuration
207 # file to its final destination
208 ghc-install-pkg() {
209 mkdir -p "${D}/$(ghc-confdir)"
210 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
211 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
212 }
213
214 # @FUNCTION: ghc-register-pkg
215 # @DESCRIPTION:
216 # registers all packages in the local (package-specific)
217 # package configuration file
218 ghc-register-pkg() {
219 local localpkgconf="$(ghc-confdir)/$1"
220
221 if [[ -f "${localpkgconf}" ]]; then
222 for pkg in $(ghc-listpkg "${localpkgconf}"); do
223 ebegin "Registering ${pkg} "
224 $(ghc-getghcpkgbin) -f "${localpkgconf}" describe "${pkg}" \
225 | $(ghc-getghcpkg) update - --force > /dev/null
226 eend $?
227 done
228 fi
229 }
230
231 # @FUNCTION: ghc-reregister
232 # @DESCRIPTION:
233 # re-adds all available .conf files to the global
234 # package conf file, to be used on a ghc reinstallation
235 ghc-reregister() {
236 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
237 einfo "Re-adding packages (may cause several harmless warnings) ..."
238 PATH="${EPREFIX}/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)"
239 if [ -d "${CONFDIR}" ]; then
240 pushd "${CONFDIR}" > /dev/null
241 for conf in *.conf; do
242 PATH="${EPREFIX}/usr/bin:${PATH}" ghc-register-pkg "${conf}"
243 done
244 popd > /dev/null
245 fi
246 }
247
248 # @FUNCTION: ghc-unregister-pkg
249 # @DESCRIPTION:
250 # unregisters a package configuration file
251 # protected are all packages that are still contained in
252 # another package configuration file
253 ghc-unregister-pkg() {
254 local localpkgconf="$(ghc-confdir)/$1"
255 local i
256 local pkg
257
258 if [[ -f "${localpkgconf}" ]]; then
259 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
260 if ! ghc-package-exists "${pkg}"; then
261 einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
262 else
263 ebegin "Unregistering ${pkg} "
264 $(ghc-getghcpkg) unregister "${pkg}" --force > /dev/null
265 eend $?
266 fi
267 done
268 fi
269 }
270
271 # @FUNCTION: ghc-reverse
272 # @DESCRIPTION:
273 # help-function: reverse a list
274 ghc-reverse() {
275 local result
276 local i
277 for i in $1; do
278 result="${i} ${result}"
279 done
280 echo "${result}"
281 }
282
283 # @FUNCTION: ghc-elem
284 # @DESCRIPTION:
285 # help-function: element-check
286 ghc-elem() {
287 local i
288 for i in $2; do
289 [[ "$1" == "${i}" ]] && return 0
290 done
291 return 1
292 }
293
294 # @FUNCTION: ghc-listpkg
295 # @DESCRIPTION:
296 # show the packages in a package configuration file
297 ghc-listpkg() {
298 local ghcpkgcall
299 local i
300 local extra_flags
301 if version_is_at_least '6.12.3' "$(ghc-version)"; then
302 extra_flags="${extra_flags} -v0"
303 fi
304 for i in $*; do
305 echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \
306 | sed \
307 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
308 -e "s|/.*$||" \
309 -e "s|,| |g" -e "s|[(){}]||g"
310 done
311 }
312
313 # @FUNCTION: ghc-package_pkg_postinst
314 # @DESCRIPTION:
315 # exported function: registers the package-specific package
316 # configuration file
317 ghc-package_pkg_postinst() {
318 ghc-register-pkg "$(ghc-localpkgconf)"
319 }
320
321 # @FUNCTION: ghc-package_pkg_prerm
322 # @DESCRIPTION:
323 # exported function: unregisters the package-specific package
324 # configuration file; a package contained therein is unregistered
325 # only if it the same package is not also contained in another
326 # package configuration file ...
327 ghc-package_pkg_prerm() {
328 ghc-unregister-pkg "$(ghc-localpkgconf)"
329 }
330
331 EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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