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Revision 1.39 - (show annotations) (download)
Tue Feb 11 19:00:06 2014 UTC (2 months, 1 week ago) by slyfox
Branch: MAIN
CVS Tags: HEAD
Changes since 1.38: +9 -1 lines
Add support for parallel building (ghc-7.8+). Disable dynamic library stripping and respect --sysconfdir (Cabal-1.18+).

1 # Copyright 1999-2014 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 1.38 2014/01/19 08:23:36 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 links 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 # @FUNCTION: ghc-supports-interpreter
120 # @DESCRIPTION:
121 # checks if ghc has interpreter mode (aka GHCi)
122 # It usually means that ghc supports for template haskell.
123 ghc-supports-interpreter() {
124 $(ghc-getghc) --info | grep "Have interpreter" | grep -q "YES"
125 }
126
127 # @FUNCTION: ghc-supports-parallel-make
128 # @DESCRIPTION:
129 # checks if ghc has support for '--make -j' mode
130 # The option was introduced in ghc-7.8-rc1.
131 ghc-supports-parallel-make() {
132 $(ghc-getghc) --info | grep "Support parallel --make" | grep -q "YES"
133 }
134
135 # @FUNCTION: ghc-extractportageversion
136 # @DESCRIPTION:
137 # extract the version of a portage-installed package
138 ghc-extractportageversion() {
139 local pkg
140 local version
141 pkg="$(best_version $1)"
142 version="${pkg#$1-}"
143 version="${version%-r*}"
144 version="${version%_pre*}"
145 echo "${version}"
146 }
147
148 # @FUNCTION: ghc-libdir
149 # @DESCRIPTION:
150 # returns the library directory
151 _GHC_LIBDIR_CACHE=""
152 ghc-libdir() {
153 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
154 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
155 fi
156 echo "${_GHC_LIBDIR_CACHE}"
157 }
158
159 # @FUNCTION: ghc-confdir
160 # @DESCRIPTION:
161 # returns the (Gentoo) library configuration directory
162 ghc-confdir() {
163 echo "$(ghc-libdir)/gentoo"
164 }
165
166 # @FUNCTION: ghc-localpkgconf
167 # @DESCRIPTION:
168 # returns the name of the local (package-specific)
169 # package configuration file
170 ghc-localpkgconf() {
171 echo "${PF}.conf"
172 }
173
174 # @FUNCTION: ghc-makeghcilib
175 # @DESCRIPTION:
176 # make a ghci foo.o file from a libfoo.a file
177 ghc-makeghcilib() {
178 local outfile
179 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
180 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
181 }
182
183 # @FUNCTION: ghc-package-exists
184 # @DESCRIPTION:
185 # tests if a ghc package exists
186 ghc-package-exists() {
187 $(ghc-getghcpkg) describe "$1" > /dev/null 2>&1
188 }
189
190 # @FUNCTION: ghc-setup-pkg
191 # @DESCRIPTION:
192 # creates a local (package-specific) package
193 # configuration file; the arguments should be
194 # uninstalled package description files, each
195 # containing a single package description; if
196 # no arguments are given, the resulting file is
197 # empty
198 ghc-setup-pkg() {
199 local localpkgconf="${S}/$(ghc-localpkgconf)"
200 echo '[]' > "${localpkgconf}"
201
202 for pkg in $*; do
203 $(ghc-getghcpkgbin) -f "${localpkgconf}" update - --force \
204 < "${pkg}" || die "failed to register ${pkg}"
205 done
206 }
207
208 # @FUNCTION: ghc-fixlibpath
209 # @DESCRIPTION:
210 # fixes the library and import directories path
211 # of the package configuration file
212 ghc-fixlibpath() {
213 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
214 if [[ -n "$2" ]]; then
215 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
216 fi
217 }
218
219 # @FUNCTION: ghc-install-pkg
220 # @DESCRIPTION:
221 # moves the local (package-specific) package configuration
222 # file to its final destination
223 ghc-install-pkg() {
224 mkdir -p "${D}/$(ghc-confdir)"
225 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
226 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
227 }
228
229 # @FUNCTION: ghc-register-pkg
230 # @DESCRIPTION:
231 # registers all packages in the local (package-specific)
232 # package configuration file
233 ghc-register-pkg() {
234 local localpkgconf="$(ghc-confdir)/$1"
235
236 if [[ -f "${localpkgconf}" ]]; then
237 for pkg in $(ghc-listpkg "${localpkgconf}"); do
238 ebegin "Registering ${pkg} "
239 $(ghc-getghcpkgbin) -f "${localpkgconf}" describe "${pkg}" \
240 | $(ghc-getghcpkg) update - --force > /dev/null
241 eend $?
242 done
243 fi
244 }
245
246 # @FUNCTION: ghc-reregister
247 # @DESCRIPTION:
248 # re-adds all available .conf files to the global
249 # package conf file, to be used on a ghc reinstallation
250 ghc-reregister() {
251 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
252 einfo "Re-adding packages (may cause several harmless warnings) ..."
253 PATH="${EPREFIX}/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)"
254 if [ -d "${CONFDIR}" ]; then
255 pushd "${CONFDIR}" > /dev/null
256 for conf in *.conf; do
257 PATH="${EPREFIX}/usr/bin:${PATH}" ghc-register-pkg "${conf}"
258 done
259 popd > /dev/null
260 fi
261 }
262
263 # @FUNCTION: ghc-unregister-pkg
264 # @DESCRIPTION:
265 # unregisters a package configuration file
266 # protected are all packages that are still contained in
267 # another package configuration file
268 ghc-unregister-pkg() {
269 local localpkgconf="$(ghc-confdir)/$1"
270 local i
271 local pkg
272
273 if [[ -f "${localpkgconf}" ]]; then
274 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
275 if ! ghc-package-exists "${pkg}"; then
276 einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
277 else
278 ebegin "Unregistering ${pkg} "
279 $(ghc-getghcpkg) unregister "${pkg}" --force > /dev/null
280 eend $?
281 fi
282 done
283 fi
284 }
285
286 # @FUNCTION: ghc-reverse
287 # @DESCRIPTION:
288 # help-function: reverse a list
289 ghc-reverse() {
290 local result
291 local i
292 for i in $1; do
293 result="${i} ${result}"
294 done
295 echo "${result}"
296 }
297
298 # @FUNCTION: ghc-elem
299 # @DESCRIPTION:
300 # help-function: element-check
301 ghc-elem() {
302 local i
303 for i in $2; do
304 [[ "$1" == "${i}" ]] && return 0
305 done
306 return 1
307 }
308
309 # @FUNCTION: ghc-listpkg
310 # @DESCRIPTION:
311 # show the packages in a package configuration file
312 ghc-listpkg() {
313 local ghcpkgcall
314 local i
315 local extra_flags
316 if version_is_at_least '6.12.3' "$(ghc-version)"; then
317 extra_flags="${extra_flags} -v0"
318 fi
319 for i in $*; do
320 echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \
321 | sed \
322 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
323 -e "s|/.*$||" \
324 -e "s|,| |g" -e "s|[(){}]||g"
325 done
326 }
327
328 # @FUNCTION: ghc-package_pkg_postinst
329 # @DESCRIPTION:
330 # exported function: registers the package-specific package
331 # configuration file
332 ghc-package_pkg_postinst() {
333 ghc-register-pkg "$(ghc-localpkgconf)"
334 }
335
336 # @FUNCTION: ghc-package_pkg_prerm
337 # @DESCRIPTION:
338 # exported function: unregisters the package-specific package
339 # configuration file; a package contained therein is unregistered
340 # only if it the same package is not also contained in another
341 # package configuration file ...
342 ghc-package_pkg_prerm() {
343 ghc-unregister-pkg "$(ghc-localpkgconf)"
344 }
345
346 EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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