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Revision 1.7 - (hide annotations) (download)
Wed Mar 23 13:55:06 2005 UTC (9 years, 8 months ago) by kosmikus
Branch: MAIN
Changes since 1.6: +16 -11 lines
make ghc-package work correctly with ebuilds that don't add own packages
give ghc binary distributions in /opt/ghc/bin higher priority than /usr/local

1 kosmikus 1.1 # Copyright 1999-2004 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 kosmikus 1.7 # $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.6 2005/03/18 23:31:48 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 kosmikus 1.6 inherit versionator
11    
12 kosmikus 1.1 ECLASS="ghc-package"
13 kosmikus 1.6 INHERITED="${INHERITED} ${ECLASS}"
14 kosmikus 1.1
15 kosmikus 1.7 # promote /opt/ghc/bin to a better position in the search path
16     PATH="/usr/bin:/opt/ghc/bin:${PATH}"
17 kosmikus 1.1
18     # for later configuration using environment variables/
19     # returns the name of the ghc executable
20     ghc-getghc() {
21     echo "ghc"
22     }
23    
24     # returns the name of the ghc-pkg executable
25     ghc-getghcpkg() {
26     echo "ghc-pkg"
27     }
28    
29     # returns the name of the ghc-pkg binary (ghc-pkg
30     # itself usually is a shell script, and we have to
31 kosmikus 1.6 # bypass the script under certain circumstances);
32     # for Cabal, we add the global package config file,
33     # because for some reason that's required
34 kosmikus 1.1 ghc-getghcpkgbin() {
35 kosmikus 1.6 if ghc-cabal; then
36     echo $(ghc-libdir)/"ghc-pkg.bin" "--global-conf=$(ghc-libdir)/package.conf"
37     else
38     echo $(ghc-libdir)/"ghc-pkg.bin"
39     fi
40 kosmikus 1.1 }
41    
42     # returns the version of ghc
43 kosmikus 1.6 _GHC_VERSION_CACHE=""
44 kosmikus 1.1 ghc-version() {
45 kosmikus 1.6 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
46     _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')"
47     fi
48     echo "${_GHC_VERSION_CACHE}"
49     }
50    
51     # returns true for ghc >= 6.4
52     ghc-cabal() {
53     version_is_at_least "6.4" "$(ghc-version)"
54 kosmikus 1.1 }
55    
56     # returns the library directory
57 kosmikus 1.6 _GHC_LIBDIR_CACHE=""
58 kosmikus 1.1 ghc-libdir() {
59 kosmikus 1.6 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
60     _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
61     fi
62     echo "${_GHC_LIBDIR_CACHE}"
63 kosmikus 1.1 }
64    
65     # returns the (Gentoo) library configuration directory
66     ghc-confdir() {
67     echo $(ghc-libdir)/gentoo
68     }
69    
70     # returns the name of the local (package-specific)
71     # package configuration file
72     ghc-localpkgconf() {
73     echo "${PF}.conf"
74     }
75    
76 kosmikus 1.3 # make a ghci foo.o file from a libfoo.a file
77     ghc-makeghcilib() {
78     local outfile
79     outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
80 kosmikus 1.4 ld --relocatable --discard-all --output="${outfile}" --whole-archive $1
81 kosmikus 1.3 }
82    
83     # creates a local (package-specific) package
84     # configuration file; the arguments should be
85     # uninstalled package description files, each
86     # containing a single package description; if
87     # no arguments are given, the resulting file is
88     # empty
89 kosmikus 1.1 ghc-setup-pkg() {
90 kosmikus 1.3 local localpkgconf
91     localpkgconf="${S}/$(ghc-localpkgconf)"
92     echo '[' > ${localpkgconf}
93     while [ -n "$1" ]; do
94     cat "$1" >> ${localpkgconf}
95     shift
96     [ -n "$1" ] && echo ',' >> ${localpkgconf}
97     done
98     echo ']' >> ${localpkgconf}
99 kosmikus 1.1 }
100    
101     # moves the local (package-specific) package configuration
102     # file to its final destination
103     ghc-install-pkg() {
104     mkdir -p ${D}/$(ghc-confdir)
105     cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \
106     > ${D}/$(ghc-confdir)/$(ghc-localpkgconf)
107     }
108    
109     # registers all packages in the local (package-specific)
110     # package configuration file
111     ghc-register-pkg() {
112     local localpkgconf
113 kosmikus 1.3 localpkgconf="$(ghc-confdir)/$1"
114 kosmikus 1.7 if [[ -f ${localpkgconf} ]]; then
115     for pkg in $(ghc-listpkg ${localpkgconf}); do
116     einfo "Registering ${pkg} ..."
117     $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \
118     | $(ghc-getghcpkg) -u --force
119     done
120     fi
121 kosmikus 1.1 }
122    
123     # re-adds all available .conf files to the global
124     # package conf file, to be used on a ghc reinstallation
125     ghc-reregister() {
126     einfo "Re-adding packages ..."
127     ewarn "This may cause several warnings, but they should be harmless."
128 kosmikus 1.5 if [ -d "$(ghc-confdir)" ]; then
129     pushd $(ghc-confdir)
130     for conf in *.conf; do
131     einfo "Processing ${conf} ..."
132     ghc-register-pkg ${conf}
133     done
134     popd
135     fi
136 kosmikus 1.1 }
137    
138     # unregisters ...
139     ghc-unregister-pkg() {
140     local localpkgconf
141 kosmikus 1.3 localpkgconf="$(ghc-confdir)/$1"
142 kosmikus 1.7 if [[ -f ${localpkgconf} ]]; then
143     for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
144     einfo "Unregistering ${pkg} ..."
145     $(ghc-getghcpkg) -r ${pkg} --force
146     done
147     fi
148 kosmikus 1.1 }
149    
150     # help-function: reverse a list
151     ghc-reverse() {
152     local result
153     for i in $1; do
154     result="${i} ${result}"
155     done
156     echo ${result}
157     }
158    
159     # show the packages in a package configuration file
160     ghc-listpkg() {
161 kosmikus 1.6 local ghcpkgcall
162     if ghc-cabal; then
163     echo $($(ghc-getghcpkg) list -f $1) \
164     | sed \
165     -e "s|^.*${f}:\([^:]*\).*$|\1|" \
166     -e "s|/.*$||" \
167     -e "s|,| |g" -e "s|[()]||g"
168     else
169     echo $($(ghc-getghcpkgbin) -l -f $1) \
170 kosmikus 1.1 | cut -f2 -d':' \
171     | sed 's:,: :g'
172 kosmikus 1.6 fi
173 kosmikus 1.1 }
174    
175     # exported function: registers the package-specific package
176     # configuration file
177     ghc-package_pkg_postinst() {
178     ghc-register-pkg $(ghc-localpkgconf)
179     }
180    
181     # exported function: unregisters the package-specific
182     # package configuration file, under the condition that
183     # after removal, no other instances of the package will
184     # be left (necessary check because ghc packages are not
185     # versioned)
186     ghc-package_pkg_prerm() {
187     has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
188     || ghc-unregister-pkg $(ghc-localpkgconf)
189     }
190    
191     EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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