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Revision 1.16 - (hide annotations) (download)
Wed Sep 9 18:40:11 2009 UTC (5 years, 3 months ago) by kolmodin
Branch: MAIN
Changes since 1.15: +17 -12 lines
Updating the haskell-cabal eclass to support the CABAL_FEATURES nocabaldep
which is used in the dev-haskell/haskell-updater package. It enables
packages to use the cabal eclass without depending on cabal.

1 dcoutts 1.4 # Copyright 1999-2006 Gentoo Foundation
2 kosmikus 1.1 # Distributed under the terms of the GNU General Public License v2
3 kolmodin 1.15 # $Header: /var/cvsroot/gentoo-x86/eclass/haskell-cabal.eclass,v 1.14 2007/12/13 04:44:39 dcoutts Exp $
4 kosmikus 1.1 #
5     # Original authors: Andres Loeh <kosmikus@gentoo.org>
6     # Duncan Coutts <dcoutts@gentoo.org>
7     # Maintained by: Haskell herd <haskell@gentoo.org>
8     #
9     # This eclass is for packages that make use of the
10     # Haskell Common Architecture for Building Applications
11     # and Libraries (cabal).
12     #
13     # Basic instructions:
14     #
15     # Before inheriting the eclass, set CABAL_FEATURES to
16     # reflect the tools and features that the package makes
17     # use of.
18     #
19     # Currently supported features:
20     # haddock -- for documentation generation
21     # alex -- lexer/scanner generator
22     # happy -- parser generator
23     # c2hs -- C interface generator
24     # cpphs -- C preprocessor clone written in Haskell
25     # profile -- if package supports to build profiling-enabled libraries
26     # bootstrap -- only used for the cabal package itself
27 dcoutts 1.3 # bin -- the package installs binaries
28     # lib -- the package installs libraries
29 kolmodin 1.16 # nocabaldep -- don't add dependency on cabal.
30     # only used for packages that _must_ not pull the dependency
31     # on cabal, but still use this eclass (e.g. haskell-updater).
32 kosmikus 1.1 #
33     # Dependencies on other cabal packages have to be specified
34     # correctly.
35     #
36     # Cabal libraries should usually be SLOTted with "${PV}".
37     #
38     # Many Cabal packages require S to be manually set.
39     #
40     # Conforming Cabal packages don't require any function definitions
41     # in the ebuild.
42 kosmikus 1.8 #
43     # Special flags to Cabal Configure can now be set by using
44     # CABAL_CONFIGURE_FLAGS
45 kosmikus 1.1
46 dcoutts 1.11 inherit ghc-package multilib
47 kosmikus 1.1
48    
49     for feature in ${CABAL_FEATURES}; do
50     case ${feature} in
51 kolmodin 1.16 haddock) CABAL_USE_HADDOCK=yes;;
52     alex) CABAL_USE_ALEX=yes;;
53     happy) CABAL_USE_HAPPY=yes;;
54     c2hs) CABAL_USE_C2HS=yes;;
55     cpphs) CABAL_USE_CPPHS=yes;;
56     profile) CABAL_USE_PROFILE=yes;;
57     bootstrap) CABAL_BOOTSTRAP=yes;;
58     bin) CABAL_HAS_BINARIES=yes;;
59     lib) CABAL_HAS_LIBRARIES=yes;;
60     nocabaldep) CABAL_FROM_GHC=yes;;
61 dcoutts 1.3 *) CABAL_UNKNOWN="${CABAL_UNKNOWN} ${feature}";;
62 kosmikus 1.1 esac
63     done
64    
65     if [[ -n "${CABAL_USE_HADDOCK}" ]]; then
66     IUSE="${IUSE} doc"
67     DEPEND="${DEPEND} doc? ( dev-haskell/haddock )"
68     fi
69    
70     if [[ -n "${CABAL_USE_ALEX}" ]]; then
71     DEPEND="${DEPEND} dev-haskell/alex"
72     cabalconf="${cabalconf} --with-alex=/usr/bin/alex"
73     fi
74    
75     if [[ -n "${CABAL_USE_HAPPY}" ]]; then
76     DEPEND="${DEPEND} dev-haskell/happy"
77     cabalconf="${cabalconf} --with-happy=/usr/bin/happy"
78     fi
79    
80     if [[ -n "${CABAL_USE_C2HS}" ]]; then
81     DEPEND="${DEPEND} dev-haskell/c2hs"
82     cabalconf="${cabalconf} --with-c2hs=/usr/bin/c2hs"
83     fi
84    
85     if [[ -n "${CABAL_USE_CPPHS}" ]]; then
86     DEPEND="${DEPEND} dev-haskell/cpphs"
87     cabalconf="${cabalconf} --with-cpphs=/usr/bin/cpphs"
88     fi
89    
90     if [[ -n "${CABAL_USE_PROFILE}" ]]; then
91     IUSE="${IUSE} profile"
92     fi
93    
94     # We always use a standalone version of Cabal, rather than the one that comes
95     # with GHC. But of course we can't depend on cabal when building cabal itself.
96 dcoutts 1.14 if [[ -z ${CABAL_MIN_VERSION} ]]; then
97     CABAL_MIN_VERSION=1.1.4
98     fi
99 kolmodin 1.16 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]]; then
100 dcoutts 1.11 DEPEND="${DEPEND} >=dev-haskell/cabal-${CABAL_MIN_VERSION}"
101 kosmikus 1.1 fi
102    
103 dcoutts 1.3 # Libraries require GHC to be installed.
104     if [[ -n "${CABAL_HAS_LIBRARIES}" ]]; then
105 dcoutts 1.11 RDEPEND="${RDEPEND} dev-lang/ghc"
106 dcoutts 1.3 fi
107 kosmikus 1.1
108 dcoutts 1.14 # returns the version of cabal currently in use
109     _CABAL_VERSION_CACHE=""
110     cabal-version() {
111     if [[ -z "${_CABAL_VERSION_CACHE}" ]]; then
112     if [[ "${CABAL_BOOTSTRAP}" ]]; then
113     # We're bootstrapping cabal, so the cabal version is the version
114     # of this package itself.
115     _CABAL_VERSION_CACHE="${PV}"
116     else
117     # We ask portage, not ghc, so that we only pick up
118     # portage-installed cabal versions.
119     _CABAL_VERSION_CACHE="$(ghc-extractportageversion dev-haskell/cabal)"
120     fi
121     fi
122     echo "${_CABAL_VERSION_CACHE}"
123     }
124    
125 kosmikus 1.1 cabal-bootstrap() {
126     local setupmodule
127 dcoutts 1.14 local cabalpackage
128 kosmikus 1.1 if [[ -f "${S}/Setup.lhs" ]]; then
129     setupmodule="${S}/Setup.lhs"
130     else
131     if [[ -f "${S}/Setup.hs" ]]; then
132     setupmodule="${S}/Setup.hs"
133     else
134     die "No Setup.lhs or Setup.hs found"
135     fi
136     fi
137    
138     # We build the setup program using the latest version of
139     # cabal that we have installed
140 dcoutts 1.14 if version_is_at_least "6.4" "$(ghc-version)"; then
141     cabalpackage=Cabal-$(cabal-version)
142     else
143     # older ghc's don't support package versioning
144     cabalpackage=Cabal
145     fi
146     einfo "Using cabal-$(cabal-version)."
147     $(ghc-getghc) -package "${cabalpackage}" --make "${setupmodule}" -o setup \
148 kosmikus 1.1 || die "compiling ${setupmodule} failed"
149     }
150    
151 dcoutts 1.14 cabal-mksetup() {
152     local setupdir
153    
154     if [[ -n $1 ]]; then
155     setupdir=$1
156     else
157     setupdir=${S}
158     fi
159    
160     rm -f "${setupdir}"/Setup.{lhs,hs}
161    
162     echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \
163     > $setupdir/Setup.hs
164     }
165    
166 kosmikus 1.1 cabal-haddock() {
167     ./setup haddock || die "setup haddock failed"
168     }
169    
170     cabal-configure() {
171 dcoutts 1.14 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
172     cabalconf="${cabalconf} --with-haddock=/usr/bin/haddock"
173     fi
174 kosmikus 1.1 if [[ -n "${CABAL_USE_PROFILE}" ]] && use profile; then
175 dcoutts 1.2 cabalconf="${cabalconf} --enable-library-profiling"
176 kosmikus 1.1 fi
177 dcoutts 1.6 # Building GHCi libs on ppc64 causes "TOC overflow".
178     if use ppc64; then
179 dcoutts 1.5 cabalconf="${cabalconf} --disable-library-for-ghci"
180     fi
181 kosmikus 1.1
182 dcoutts 1.14 if version_is_at_least "1.2.0" "$(cabal-version)"; then
183     cabalconf="${cabalconf} --docdir=/usr/share/doc/${PF}"
184     # As of Cabal 1.2, configure is quite quiet. For diagnostic purposes
185     # it's better if the configure chatter is in the build logs:
186     cabalconf="${cabalconf} --verbose"
187     fi
188     # Note: with Cabal-1.1.6.x we do not have enough control
189 dcoutts 1.11 # to put the docs into the right place. They're currently going
190     # into /usr/share/${P}/ghc-x.y/doc/
191     # rather than /usr/share/doc/${PF}/
192     # Because we can only set the datadir, not the docdir.
193    
194 kosmikus 1.1 ./setup configure \
195     --ghc --prefix=/usr \
196     --with-compiler="$(ghc-getghc)" \
197     --with-hc-pkg="$(ghc-getghcpkg)" \
198 dcoutts 1.11 --prefix=/usr \
199     --libdir=/usr/$(get_libdir) \
200     --libsubdir=${P}/ghc-$(ghc-version) \
201     --datadir=/usr/share/ \
202     --datasubdir=${P}/ghc-$(ghc-version) \
203 kosmikus 1.1 ${cabalconf} \
204 kosmikus 1.8 ${CABAL_CONFIGURE_FLAGS} \
205 kosmikus 1.1 "$@" || die "setup configure failed"
206     }
207    
208     cabal-build() {
209 dcoutts 1.14 unset LANG LC_ALL LC_MESSAGES
210 kosmikus 1.1 ./setup build \
211     || die "setup build failed"
212     }
213    
214     cabal-copy() {
215     ./setup copy \
216 dcoutts 1.11 --destdir="${D}" \
217 kosmikus 1.1 || die "setup copy failed"
218    
219     # cabal is a bit eager about creating dirs,
220     # so remove them if they are empty
221     rmdir "${D}/usr/bin" 2> /dev/null
222    
223     # GHC 6.4 has a bug in get/setPermission and Cabal 1.1.1 has
224     # no workaround.
225     # set the +x permission on executables
226     if [[ -d "${D}/usr/bin" ]] ; then
227     chmod +x "${D}/usr/bin/"*
228     fi
229 dcoutts 1.11 # TODO: do we still need this?
230 kosmikus 1.1 }
231    
232     cabal-pkg() {
233 kosmikus 1.9 # This does not actually register since we're using true instead
234 kosmikus 1.1 # of ghc-pkg. So it just leaves the .installed-pkg-config and we can
235     # register that ourselves (if it exists).
236 dcoutts 1.2 local result
237     local err
238    
239 dcoutts 1.4 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
240 dcoutts 1.14 if version_is_at_least "1.2.0" "$(cabal-version)"; then
241     # Newer cabal can generate a package conf for us:
242     ./setup register --gen-pkg-config="${T}/${P}.conf"
243     ghc-setup-pkg "${T}/${P}.conf"
244 dcoutts 1.4 ghc-install-pkg
245     else
246 dcoutts 1.14 # With older cabal we have to hack it by replacing its ghc-pkg
247     # with true and then just picking up the .installed-pkg-config
248     # file and registering that ourselves (if it exists).
249     sed -i "s|$(ghc-getghcpkg)|$(type -P true)|" .setup-config
250     ./setup register || die "setup register failed"
251     if [[ -f .installed-pkg-config ]]; then
252     ghc-setup-pkg .installed-pkg-config
253     ghc-install-pkg
254     else
255     die "setup register has not generated a package configuration file"
256     fi
257 dcoutts 1.4 fi
258 kosmikus 1.1 fi
259     }
260    
261 kolmodin 1.13 # Some cabal libs are bundled along with some versions of ghc
262     # eg filepath-1.0 comes with ghc-6.6.1
263     # by putting CABAL_CORE_LIB_GHC_PV="6.6.1" in an ebuild we are declaring that
264     # when building with this version of ghc, the ebuild is a dummy that is it will
265     # install no files since the package is already included with ghc.
266     # However portage still records the dependency and we can upgrade the package
267     # to a later one that's not included with ghc.
268     # You can also put a space separated list, eg CABAL_CORE_LIB_GHC_PV="6.6 6.6.1".
269     cabal-is-dummy-lib() {
270     for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do
271     [[ "$(ghc-version)" == "$version" ]] && return 0
272     done
273     return 1
274     }
275    
276 kosmikus 1.1 # exported function: check if cabal is correctly installed for
277     # the currently active ghc (we cannot guarantee this with portage)
278     haskell-cabal_pkg_setup() {
279 dcoutts 1.11 ghc-package_pkg_setup
280 kolmodin 1.16 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]] && ! ghc-sanecabal "${CABAL_MIN_VERSION}"; then
281 kosmikus 1.1 eerror "The package dev-haskell/cabal is not correctly installed for"
282     eerror "the currently active version of ghc ($(ghc-version)). Please"
283 kolmodin 1.16 eerror "run ghc-updater or haskell-updater or re-build dev-haskell/cabal."
284 kosmikus 1.1 die "cabal is not correctly installed"
285     fi
286 dcoutts 1.4 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then
287     eerror "QA: Neither bin nor lib are in CABAL_FEATURES."
288     fi
289 dcoutts 1.3 if [[ -n "${CABAL_UNKNOWN}" ]]; then
290 kolmodin 1.15 ewarn "Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}"
291 dcoutts 1.3 fi
292 kolmodin 1.13 if cabal-is-dummy-lib; then
293     einfo "${P} is included in ghc-${CABAL_CORE_LIB_GHC_PV}, nothing to install."
294     fi
295 kosmikus 1.1 }
296    
297     # exported function: cabal-style bootstrap configure and compile
298     cabal_src_compile() {
299 kolmodin 1.13 if ! cabal-is-dummy-lib; then
300     cabal-bootstrap
301     cabal-configure
302     cabal-build
303 kosmikus 1.1
304 kolmodin 1.13 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
305     cabal-haddock
306     fi
307 kosmikus 1.1 fi
308     }
309 kolmodin 1.16
310 kosmikus 1.1 haskell-cabal_src_compile() {
311     cabal_src_compile
312     }
313    
314     # exported function: cabal-style copy and register
315     cabal_src_install() {
316 kolmodin 1.13 if cabal-is-dummy-lib; then
317     # create a dummy local package conf file for the sake of ghc-updater
318     dodir "$(ghc-confdir)"
319     echo '[]' > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
320     else
321     cabal-copy
322     cabal-pkg
323 kosmikus 1.1
324 kolmodin 1.13 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
325 dcoutts 1.14 if ! version_is_at_least "1.1.6" "$(cabal-version)"; then
326 kolmodin 1.13 dohtml -r dist/doc/html/*
327     fi
328 dcoutts 1.11 fi
329 kosmikus 1.1 fi
330     }
331     haskell-cabal_src_install() {
332     cabal_src_install
333     }
334    
335     EXPORT_FUNCTIONS pkg_setup src_compile src_install

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