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Revision 1.1.1.1 - (hide annotations) (download) (vendor branch)
Wed Nov 30 09:59:38 2005 UTC (8 years, 9 months ago) by chriswhite
Changes since 1.1: +182 -46 lines
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1 kosmikus 1.1 # Copyright 1999-2004 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 chriswhite 1.1.1.1 # $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.15 2005/09/13 12:51:30 kosmikus Exp $
4 kosmikus 1.1 #
5     # Author: Andres Loeh <kosmikus@gentoo.org>
6     #
7     # This eclass helps with the Glasgow Haskell Compiler's package
8     # configuration utility.
9    
10 chriswhite 1.1.1.1 inherit versionator
11 kosmikus 1.1
12 chriswhite 1.1.1.1 # promote /opt/ghc/bin to a better position in the search path
13     PATH="/usr/bin:/opt/ghc/bin:${PATH}"
14 kosmikus 1.1
15     # for later configuration using environment variables/
16     # returns the name of the ghc executable
17     ghc-getghc() {
18     echo "ghc"
19     }
20    
21     # returns the name of the ghc-pkg executable
22     ghc-getghcpkg() {
23     echo "ghc-pkg"
24     }
25    
26     # returns the name of the ghc-pkg binary (ghc-pkg
27     # itself usually is a shell script, and we have to
28 chriswhite 1.1.1.1 # bypass the script under certain circumstances);
29     # for Cabal, we add an empty global package config file,
30     # because for some reason the global package file
31     # must be specified
32 kosmikus 1.1 ghc-getghcpkgbin() {
33 chriswhite 1.1.1.1 if ghc-cabal; then
34     echo '[]' > "${T}/empty.conf"
35     echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf"
36     else
37     echo "$(ghc-libdir)/ghc-pkg.bin"
38     fi
39 kosmikus 1.1 }
40    
41     # returns the version of ghc
42 chriswhite 1.1.1.1 _GHC_VERSION_CACHE=""
43 kosmikus 1.1 ghc-version() {
44 chriswhite 1.1.1.1 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
45     _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')"
46     fi
47     echo "${_GHC_VERSION_CACHE}"
48     }
49    
50     # this function can be used to determine if ghc itself
51     # uses the Cabal package format; it has nothing to do
52     # with the Cabal libraries ... ghc uses the Cabal package
53     # format since version 6.4
54     ghc-cabal() {
55     version_is_at_least "6.4" "$(ghc-version)"
56     }
57    
58     # return the best version of the Cabal library that is available
59     ghc-bestcabalversion() {
60     local cabalpackage
61     local cabalversion
62     if ghc-cabal; then
63     # Try if ghc-pkg can determine the latest version.
64     # If not, use portage.
65     cabalpackage="$($(ghc-getghcpkg) latest Cabal 2> /dev/null)"
66     if [[ $? -eq 0 ]]; then
67     cabalversion="${cabalpackage#Cabal-}"
68     else
69     cabalpackage="$(best_version cabal)"
70     cabalversion="${cabalpackage#dev-haskell/cabal-}"
71     cabalversion="${cabalversion%-r*}"
72     cabalversion="${cabalversion%_pre*}"
73     fi
74     echo "Cabal-${cabalversion}"
75     else
76     # older ghc's don't support package versioning
77     echo Cabal
78     fi
79     }
80    
81     # check if a standalone Cabal version is available for the
82     # currently used ghc; takes minimal version of Cabal as
83     # an optional argument
84     ghc-sanecabal() {
85     local f
86     local version
87     if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
88     for f in $(ghc-confdir)/cabal-*; do
89     [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
90     done
91     return 1
92 kosmikus 1.1 }
93    
94     # returns the library directory
95 chriswhite 1.1.1.1 _GHC_LIBDIR_CACHE=""
96 kosmikus 1.1 ghc-libdir() {
97 chriswhite 1.1.1.1 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
98     _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
99     fi
100     echo "${_GHC_LIBDIR_CACHE}"
101 kosmikus 1.1 }
102    
103     # returns the (Gentoo) library configuration directory
104     ghc-confdir() {
105 chriswhite 1.1.1.1 echo "$(ghc-libdir)/gentoo"
106 kosmikus 1.1 }
107    
108     # returns the name of the local (package-specific)
109     # package configuration file
110     ghc-localpkgconf() {
111     echo "${PF}.conf"
112     }
113    
114 chriswhite 1.1.1.1 # make a ghci foo.o file from a libfoo.a file
115     ghc-makeghcilib() {
116     local outfile
117     outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
118     ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
119     }
120    
121     # tests if a ghc package exists
122     ghc-package-exists() {
123     $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
124     }
125    
126     # creates a local (package-specific) package
127     # configuration file; the arguments should be
128     # uninstalled package description files, each
129     # containing a single package description; if
130     # no arguments are given, the resulting file is
131     # empty
132 kosmikus 1.1 ghc-setup-pkg() {
133 chriswhite 1.1.1.1 local localpkgconf
134     localpkgconf="${S}/$(ghc-localpkgconf)"
135     echo '[]' > "${localpkgconf}"
136     for pkg in $*; do
137     $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
138     < "${pkg}" || die "failed to register ${pkg}"
139     done
140     }
141    
142     # fixes the library and import directories path
143     # of the package configuration file
144     ghc-fixlibpath() {
145     sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
146     if [[ -n "$2" ]]; then
147     sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
148     fi
149 kosmikus 1.1 }
150    
151     # moves the local (package-specific) package configuration
152     # file to its final destination
153     ghc-install-pkg() {
154 chriswhite 1.1.1.1 mkdir -p "${D}/$(ghc-confdir)"
155     cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
156     > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
157 kosmikus 1.1 }
158    
159     # registers all packages in the local (package-specific)
160     # package configuration file
161     ghc-register-pkg() {
162     local localpkgconf
163 chriswhite 1.1.1.1 localpkgconf="$(ghc-confdir)/$1"
164     if [[ -f "${localpkgconf}" ]]; then
165     for pkg in $(ghc-listpkg "${localpkgconf}"); do
166     ebegin "Registering ${pkg} "
167     $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
168     | $(ghc-getghcpkg) -u --force > /dev/null
169     eend $?
170     done
171     fi
172 kosmikus 1.1 }
173    
174     # re-adds all available .conf files to the global
175     # package conf file, to be used on a ghc reinstallation
176     ghc-reregister() {
177 chriswhite 1.1.1.1 einfo "Re-adding packages (may cause several harmless warnings) ..."
178     if [ -d "$(ghc-confdir)" ]; then
179     pushd "$(ghc-confdir)" > /dev/null
180     for conf in *.conf; do
181     # einfo "Processing ${conf} ..."
182     ghc-register-pkg "${conf}"
183     done
184     popd > /dev/null
185     fi
186 kosmikus 1.1 }
187    
188 chriswhite 1.1.1.1 # unregisters a package configuration file
189     # protected are all packages that are still contained in
190     # another package configuration file
191 kosmikus 1.1 ghc-unregister-pkg() {
192     local localpkgconf
193 chriswhite 1.1.1.1 local i
194     local pkg
195     local protected
196     localpkgconf="$(ghc-confdir)/$1"
197    
198     for i in $(ghc-confdir)/*.conf; do
199     [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
200 kosmikus 1.1 done
201 chriswhite 1.1.1.1 # protected now contains the packages that cannot be unregistered yet
202    
203     if [[ -f "${localpkgconf}" ]]; then
204     for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
205     if $(ghc-elem "${pkg}" "${protected}"); then
206     einfo "Package ${pkg} is protected."
207     elif ! ghc-package-exists "${pkg}"; then
208     :
209     # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
210     else
211     ebegin "Unregistering ${pkg} "
212     $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
213     eend $?
214     fi
215     done
216     fi
217 kosmikus 1.1 }
218    
219     # help-function: reverse a list
220     ghc-reverse() {
221     local result
222 chriswhite 1.1.1.1 local i
223 kosmikus 1.1 for i in $1; do
224     result="${i} ${result}"
225     done
226 chriswhite 1.1.1.1 echo "${result}"
227     }
228    
229     # help-function: element-check
230     ghc-elem() {
231     local i
232     for i in $2; do
233     [[ "$1" == "${i}" ]] && return 0
234     done
235     return 1
236 kosmikus 1.1 }
237    
238     # show the packages in a package configuration file
239     ghc-listpkg() {
240 chriswhite 1.1.1.1 local ghcpkgcall
241     local i
242     for i in $*; do
243     if ghc-cabal; then
244     echo $($(ghc-getghcpkg) list -f "${i}") \
245     | sed \
246     -e "s|^.*${i}:\([^:]*\).*$|\1|" \
247     -e "s|/.*$||" \
248     -e "s|,| |g" -e "s|[()]||g"
249     else
250     echo $($(ghc-getghcpkgbin) -l -f "${i}") \
251     | cut -f2 -d':' \
252     | sed 's:,: :g'
253     fi
254     done
255 kosmikus 1.1 }
256    
257     # exported function: registers the package-specific package
258     # configuration file
259     ghc-package_pkg_postinst() {
260 chriswhite 1.1.1.1 ghc-register-pkg "$(ghc-localpkgconf)"
261 kosmikus 1.1 }
262    
263 chriswhite 1.1.1.1 # exported function: unregisters the package-specific package
264     # configuration file; a package contained therein is unregistered
265     # only if it the same package is not also contained in another
266     # package configuration file ...
267 kosmikus 1.1 ghc-package_pkg_prerm() {
268 chriswhite 1.1.1.1 ghc-unregister-pkg "$(ghc-localpkgconf)"
269 kosmikus 1.1 }
270    
271     EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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