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Revision 1.36 - (show annotations) (download)
Sun Jan 6 13:06:35 2013 UTC (21 months, 2 weeks ago) by slyfox
Branch: MAIN
Changes since 1.35: +10 -2 lines
Added 'ghc-supports-threaded-runtime' function. Removed implicit RDEPEND on 'ghc'.

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 1.35 2012/11/16 15:47:17 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 $(ghc-getghc) --info | grep "RTS ways" | grep -q "thr"
103 }
104
105 # @FUNCTION: ghc-extractportageversion
106 # @DESCRIPTION:
107 # extract the version of a portage-installed package
108 ghc-extractportageversion() {
109 local pkg
110 local version
111 pkg="$(best_version $1)"
112 version="${pkg#$1-}"
113 version="${version%-r*}"
114 version="${version%_pre*}"
115 echo "${version}"
116 }
117
118 # @FUNCTION: ghc-libdir
119 # @DESCRIPTION:
120 # returns the library directory
121 _GHC_LIBDIR_CACHE=""
122 ghc-libdir() {
123 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
124 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
125 fi
126 echo "${_GHC_LIBDIR_CACHE}"
127 }
128
129 # @FUNCTION: ghc-confdir
130 # @DESCRIPTION:
131 # returns the (Gentoo) library configuration directory
132 ghc-confdir() {
133 echo "$(ghc-libdir)/gentoo"
134 }
135
136 # @FUNCTION: ghc-localpkgconf
137 # @DESCRIPTION:
138 # returns the name of the local (package-specific)
139 # package configuration file
140 ghc-localpkgconf() {
141 echo "${PF}.conf"
142 }
143
144 # @FUNCTION: ghc-makeghcilib
145 # @DESCRIPTION:
146 # make a ghci foo.o file from a libfoo.a file
147 ghc-makeghcilib() {
148 local outfile
149 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
150 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
151 }
152
153 # @FUNCTION: ghc-package-exists
154 # @DESCRIPTION:
155 # tests if a ghc package exists
156 ghc-package-exists() {
157 $(ghc-getghcpkg) describe "$1" > /dev/null 2>&1
158 }
159
160 # @FUNCTION: ghc-setup-pkg
161 # @DESCRIPTION:
162 # creates a local (package-specific) package
163 # configuration file; the arguments should be
164 # uninstalled package description files, each
165 # containing a single package description; if
166 # no arguments are given, the resulting file is
167 # empty
168 ghc-setup-pkg() {
169 local localpkgconf="${S}/$(ghc-localpkgconf)"
170 echo '[]' > "${localpkgconf}"
171
172 for pkg in $*; do
173 $(ghc-getghcpkgbin) -f "${localpkgconf}" update - --force \
174 < "${pkg}" || die "failed to register ${pkg}"
175 done
176 }
177
178 # @FUNCTION: ghc-fixlibpath
179 # @DESCRIPTION:
180 # fixes the library and import directories path
181 # of the package configuration file
182 ghc-fixlibpath() {
183 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
184 if [[ -n "$2" ]]; then
185 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
186 fi
187 }
188
189 # @FUNCTION: ghc-install-pkg
190 # @DESCRIPTION:
191 # moves the local (package-specific) package configuration
192 # file to its final destination
193 ghc-install-pkg() {
194 mkdir -p "${D}/$(ghc-confdir)"
195 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
196 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
197 }
198
199 # @FUNCTION: ghc-register-pkg
200 # @DESCRIPTION:
201 # registers all packages in the local (package-specific)
202 # package configuration file
203 ghc-register-pkg() {
204 local localpkgconf="$(ghc-confdir)/$1"
205
206 if [[ -f "${localpkgconf}" ]]; then
207 for pkg in $(ghc-listpkg "${localpkgconf}"); do
208 ebegin "Registering ${pkg} "
209 $(ghc-getghcpkgbin) -f "${localpkgconf}" describe "${pkg}" \
210 | $(ghc-getghcpkg) update - --force > /dev/null
211 eend $?
212 done
213 fi
214 }
215
216 # @FUNCTION: ghc-reregister
217 # @DESCRIPTION:
218 # re-adds all available .conf files to the global
219 # package conf file, to be used on a ghc reinstallation
220 ghc-reregister() {
221 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
222 einfo "Re-adding packages (may cause several harmless warnings) ..."
223 PATH="${EPREFIX}/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)"
224 if [ -d "${CONFDIR}" ]; then
225 pushd "${CONFDIR}" > /dev/null
226 for conf in *.conf; do
227 PATH="${EPREFIX}/usr/bin:${PATH}" ghc-register-pkg "${conf}"
228 done
229 popd > /dev/null
230 fi
231 }
232
233 # @FUNCTION: ghc-unregister-pkg
234 # @DESCRIPTION:
235 # unregisters a package configuration file
236 # protected are all packages that are still contained in
237 # another package configuration file
238 ghc-unregister-pkg() {
239 local localpkgconf="$(ghc-confdir)/$1"
240 local i
241 local pkg
242
243 if [[ -f "${localpkgconf}" ]]; then
244 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
245 if ! ghc-package-exists "${pkg}"; then
246 einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
247 else
248 ebegin "Unregistering ${pkg} "
249 $(ghc-getghcpkg) unregister "${pkg}" --force > /dev/null
250 eend $?
251 fi
252 done
253 fi
254 }
255
256 # @FUNCTION: ghc-reverse
257 # @DESCRIPTION:
258 # help-function: reverse a list
259 ghc-reverse() {
260 local result
261 local i
262 for i in $1; do
263 result="${i} ${result}"
264 done
265 echo "${result}"
266 }
267
268 # @FUNCTION: ghc-elem
269 # @DESCRIPTION:
270 # help-function: element-check
271 ghc-elem() {
272 local i
273 for i in $2; do
274 [[ "$1" == "${i}" ]] && return 0
275 done
276 return 1
277 }
278
279 # @FUNCTION: ghc-listpkg
280 # @DESCRIPTION:
281 # show the packages in a package configuration file
282 ghc-listpkg() {
283 local ghcpkgcall
284 local i
285 local extra_flags
286 if version_is_at_least '6.12.3' "$(ghc-version)"; then
287 extra_flags="${extra_flags} -v0"
288 fi
289 for i in $*; do
290 echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \
291 | sed \
292 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
293 -e "s|/.*$||" \
294 -e "s|,| |g" -e "s|[(){}]||g"
295 done
296 }
297
298 # @FUNCTION: ghc-package_pkg_postinst
299 # @DESCRIPTION:
300 # exported function: registers the package-specific package
301 # configuration file
302 ghc-package_pkg_postinst() {
303 ghc-register-pkg "$(ghc-localpkgconf)"
304 }
305
306 # @FUNCTION: ghc-package_pkg_prerm
307 # @DESCRIPTION:
308 # exported function: unregisters the package-specific package
309 # configuration file; a package contained therein is unregistered
310 # only if it the same package is not also contained in another
311 # package configuration file ...
312 ghc-package_pkg_prerm() {
313 ghc-unregister-pkg "$(ghc-localpkgconf)"
314 }
315
316 EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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