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Revision 1.24 - (hide annotations) (download)
Wed Jul 25 18:40:29 2007 UTC (6 years, 8 months ago) by dcoutts
Branch: MAIN
Changes since 1.23: +0 -0 lines
Fix use of $(which ghc) for $(type -P ghc) that somehow crept back in.

1 kosmikus 1.1 # Copyright 1999-2004 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 dcoutts 1.23 # $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.9 2005/04/08 01:13:39 araujo Exp $
4 kosmikus 1.1 #
5     # Author: Andres Loeh <kosmikus@gentoo.org>
6 dcoutts 1.17 # Maintained by: Haskell herd <haskell@gentoo.org>
7 kosmikus 1.1 #
8     # This eclass helps with the Glasgow Haskell Compiler's package
9     # configuration utility.
10    
11 kosmikus 1.6 inherit versionator
12    
13 kosmikus 1.7 # promote /opt/ghc/bin to a better position in the search path
14     PATH="/usr/bin:/opt/ghc/bin:${PATH}"
15 kosmikus 1.1
16     # for later configuration using environment variables/
17     # returns the name of the ghc executable
18     ghc-getghc() {
19 kosmikus 1.22 type -P ghc
20 kosmikus 1.1 }
21    
22     # returns the name of the ghc-pkg executable
23     ghc-getghcpkg() {
24 kosmikus 1.22 type -P ghc-pkg
25 kosmikus 1.1 }
26    
27     # returns the name of the ghc-pkg binary (ghc-pkg
28     # itself usually is a shell script, and we have to
29 kosmikus 1.6 # bypass the script under certain circumstances);
30 kosmikus 1.15 # for Cabal, we add an empty global package config file,
31     # because for some reason the global package file
32     # must be specified
33 kosmikus 1.1 ghc-getghcpkgbin() {
34 kosmikus 1.6 if ghc-cabal; then
35 kosmikus 1.15 echo '[]' > "${T}/empty.conf"
36     echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf"
37 kosmikus 1.6 else
38 kosmikus 1.15 echo "$(ghc-libdir)/ghc-pkg.bin"
39 kosmikus 1.6 fi
40 kosmikus 1.1 }
41    
42     # returns the version of ghc
43 kosmikus 1.6 _GHC_VERSION_CACHE=""
44 kosmikus 1.1 ghc-version() {
45 kosmikus 1.6 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
46 dcoutts 1.16 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
47 kosmikus 1.6 fi
48     echo "${_GHC_VERSION_CACHE}"
49     }
50    
51 kosmikus 1.15 # this function can be used to determine if ghc itself
52     # uses the Cabal package format; it has nothing to do
53     # with the Cabal libraries ... ghc uses the Cabal package
54     # format since version 6.4
55 kosmikus 1.6 ghc-cabal() {
56     version_is_at_least "6.4" "$(ghc-version)"
57 kosmikus 1.1 }
58    
59 kosmikus 1.15 # return the best version of the Cabal library that is available
60     ghc-bestcabalversion() {
61     local cabalversion
62     if ghc-cabal; then
63 dcoutts 1.19 # We ask portage, not ghc, so that we only pick up
64     # portage-installed cabal versions.
65 dcoutts 1.23 cabalversion="$(ghc-extractportageversion dev-haskell/cabal)"
66 kosmikus 1.15 echo "Cabal-${cabalversion}"
67     else
68     # older ghc's don't support package versioning
69     echo Cabal
70     fi
71     }
72    
73     # check if a standalone Cabal version is available for the
74     # currently used ghc; takes minimal version of Cabal as
75     # an optional argument
76     ghc-sanecabal() {
77     local f
78     local version
79     if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
80     for f in $(ghc-confdir)/cabal-*; do
81     [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
82     done
83     return 1
84     }
85    
86 dcoutts 1.23 # checks if ghc and ghc-bin are installed in the same version
87     # (if they're both installed); if this is not the case, we
88     # unfortunately cannot trust portage's dependency resolution
89     ghc-saneghc() {
90     local ghcversion
91     local ghcbinversion
92     if [[ "${PN}" == "ghc" || "${PN}" == "ghc-bin" ]]; then
93     return
94     fi
95     if has_version dev-lang/ghc && has_version dev-lang/ghc-bin; then
96     ghcversion="$(ghc-extractportageversion dev-lang/ghc)"
97     ghcbinversion="$(ghc-extractportageversion dev-lang/ghc-bin)"
98     if [[ "${ghcversion}" != "${ghcbinversion}" ]]; then
99     return 1
100     fi
101     fi
102     return
103     }
104    
105     # extract the version of a portage-installed package
106     ghc-extractportageversion() {
107     local pkg
108     local version
109     pkg="$(best_version $1)"
110     version="${pkg#$1-}"
111     version="${version%-r*}"
112     version="${version%_pre*}"
113     echo "${version}"
114     }
115    
116 kosmikus 1.1 # returns the library directory
117 kosmikus 1.6 _GHC_LIBDIR_CACHE=""
118 kosmikus 1.1 ghc-libdir() {
119 kosmikus 1.6 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
120     _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
121     fi
122     echo "${_GHC_LIBDIR_CACHE}"
123 kosmikus 1.1 }
124    
125     # returns the (Gentoo) library configuration directory
126     ghc-confdir() {
127 kosmikus 1.15 echo "$(ghc-libdir)/gentoo"
128 kosmikus 1.1 }
129    
130     # returns the name of the local (package-specific)
131     # package configuration file
132     ghc-localpkgconf() {
133     echo "${PF}.conf"
134     }
135    
136 kosmikus 1.3 # make a ghci foo.o file from a libfoo.a file
137     ghc-makeghcilib() {
138     local outfile
139     outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
140 kosmikus 1.15 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
141     }
142    
143     # tests if a ghc package exists
144     ghc-package-exists() {
145     $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
146 kosmikus 1.3 }
147    
148     # creates a local (package-specific) package
149     # configuration file; the arguments should be
150     # uninstalled package description files, each
151     # containing a single package description; if
152     # no arguments are given, the resulting file is
153     # empty
154 kosmikus 1.1 ghc-setup-pkg() {
155 kosmikus 1.3 local localpkgconf
156     localpkgconf="${S}/$(ghc-localpkgconf)"
157 kosmikus 1.15 echo '[]' > "${localpkgconf}"
158 dcoutts 1.10 for pkg in $*; do
159 kosmikus 1.15 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
160     < "${pkg}" || die "failed to register ${pkg}"
161 kosmikus 1.3 done
162 kosmikus 1.1 }
163    
164 araujo 1.9 # fixes the library and import directories path
165     # of the package configuration file
166     ghc-fixlibpath() {
167 kosmikus 1.15 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
168 araujo 1.9 if [[ -n "$2" ]]; then
169 kosmikus 1.15 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
170 araujo 1.9 fi
171     }
172    
173 kosmikus 1.1 # moves the local (package-specific) package configuration
174     # file to its final destination
175     ghc-install-pkg() {
176 kosmikus 1.15 mkdir -p "${D}/$(ghc-confdir)"
177     cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
178     > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
179 kosmikus 1.1 }
180    
181     # registers all packages in the local (package-specific)
182     # package configuration file
183     ghc-register-pkg() {
184     local localpkgconf
185 kosmikus 1.3 localpkgconf="$(ghc-confdir)/$1"
186 kosmikus 1.15 if [[ -f "${localpkgconf}" ]]; then
187     for pkg in $(ghc-listpkg "${localpkgconf}"); do
188 kosmikus 1.8 ebegin "Registering ${pkg} "
189 kosmikus 1.15 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
190 kosmikus 1.8 | $(ghc-getghcpkg) -u --force > /dev/null
191     eend $?
192 kosmikus 1.7 done
193     fi
194 kosmikus 1.1 }
195    
196     # re-adds all available .conf files to the global
197     # package conf file, to be used on a ghc reinstallation
198     ghc-reregister() {
199 kosmikus 1.15 einfo "Re-adding packages (may cause several harmless warnings) ..."
200 kosmikus 1.5 if [ -d "$(ghc-confdir)" ]; then
201 kosmikus 1.15 pushd "$(ghc-confdir)" > /dev/null
202 kosmikus 1.5 for conf in *.conf; do
203 kosmikus 1.15 # einfo "Processing ${conf} ..."
204     ghc-register-pkg "${conf}"
205 kosmikus 1.5 done
206 kosmikus 1.8 popd > /dev/null
207 kosmikus 1.5 fi
208 kosmikus 1.1 }
209    
210 kosmikus 1.15 # unregisters a package configuration file
211     # protected are all packages that are still contained in
212     # another package configuration file
213 kosmikus 1.1 ghc-unregister-pkg() {
214     local localpkgconf
215 kosmikus 1.15 local i
216     local pkg
217     local protected
218 kosmikus 1.3 localpkgconf="$(ghc-confdir)/$1"
219 kosmikus 1.15
220     for i in $(ghc-confdir)/*.conf; do
221     [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
222     done
223     # protected now contains the packages that cannot be unregistered yet
224    
225     if [[ -f "${localpkgconf}" ]]; then
226 kosmikus 1.7 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
227 kosmikus 1.15 if $(ghc-elem "${pkg}" "${protected}"); then
228     einfo "Package ${pkg} is protected."
229     elif ! ghc-package-exists "${pkg}"; then
230     :
231     # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
232     else
233     ebegin "Unregistering ${pkg} "
234     $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
235     eend $?
236     fi
237 kosmikus 1.7 done
238     fi
239 kosmikus 1.1 }
240    
241     # help-function: reverse a list
242     ghc-reverse() {
243     local result
244 kosmikus 1.15 local i
245 kosmikus 1.1 for i in $1; do
246     result="${i} ${result}"
247     done
248 kosmikus 1.15 echo "${result}"
249     }
250    
251     # help-function: element-check
252     ghc-elem() {
253     local i
254     for i in $2; do
255     [[ "$1" == "${i}" ]] && return 0
256     done
257     return 1
258 kosmikus 1.1 }
259    
260     # show the packages in a package configuration file
261     ghc-listpkg() {
262 kosmikus 1.6 local ghcpkgcall
263 kosmikus 1.15 local i
264     for i in $*; do
265     if ghc-cabal; then
266     echo $($(ghc-getghcpkg) list -f "${i}") \
267     | sed \
268     -e "s|^.*${i}:\([^:]*\).*$|\1|" \
269     -e "s|/.*$||" \
270     -e "s|,| |g" -e "s|[()]||g"
271     else
272     echo $($(ghc-getghcpkgbin) -l -f "${i}") \
273     | cut -f2 -d':' \
274     | sed 's:,: :g'
275     fi
276     done
277 kosmikus 1.1 }
278    
279 kolmodin 1.21 # exported function: check if we have a consistent ghc installation
280     ghc-package_pkg_setup() {
281 dcoutts 1.23 if ! ghc-saneghc; then
282     eerror "You have inconsistent versions of dev-lang/ghc and dev-lang/ghc-bin"
283     eerror "installed. Portage currently cannot work correctly with this setup."
284     eerror "There are several possibilities to work around this problem:"
285     eerror "(1) Up/downgrade ghc-bin to the same version as ghc."
286     eerror "(2) Unmerge ghc-bin."
287     eerror "(3) Unmerge ghc."
288     eerror "You probably want option 1 or 2."
289     die "Inconsistent versions of ghc and ghc-bin."
290     fi
291 kolmodin 1.21 }
292    
293 kosmikus 1.1 # exported function: registers the package-specific package
294     # configuration file
295     ghc-package_pkg_postinst() {
296 kosmikus 1.15 ghc-register-pkg "$(ghc-localpkgconf)"
297 kosmikus 1.1 }
298    
299 kosmikus 1.15 # exported function: unregisters the package-specific package
300     # configuration file; a package contained therein is unregistered
301     # only if it the same package is not also contained in another
302     # package configuration file ...
303 kosmikus 1.1 ghc-package_pkg_prerm() {
304 kosmikus 1.15 ghc-unregister-pkg "$(ghc-localpkgconf)"
305 kosmikus 1.1 }
306    
307 kolmodin 1.21 EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm

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