/[gentoo-x86]/eclass/python.eclass
Gentoo

Contents of /eclass/python.eclass

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.32 - (show annotations) (download)
Sun May 6 22:11:12 2007 UTC (7 years, 4 months ago) by kloeri
Branch: MAIN
Changes since 1.31: +4 -4 lines
Fix multilib issue, bug 171931. Thanks to Daniel Drake <dsd@gentoo.org> for reporting the issue and providing the patch.

1 # Copyright 1999-2004 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/python.eclass,v 1.31 2007/02/03 02:10:23 kloeri Exp $
4 #
5 # Author: Alastair Tse <liquidx@gentoo.org>
6 #
7 # A Utility Eclass that should be inherited by anything that deals with
8 # Python or Python modules.
9 #
10 # - Features:
11 # python_version() - sets PYVER/PYVER_MAJOR/PYVER_MINOR
12 # python_tkinter_exists() - Checks for tkinter support in python
13 # python_mod_exists() - Checks if a python module exists
14 # python_mod_compile() - Compiles a .py file to a .pyc/.pyo
15 # python_mod_optimize() - Generates .pyc/.pyo precompiled scripts
16 # python_mod_cleanup() - Goes through /usr/lib*/python* to remove
17 # orphaned *.pyc *.pyo
18 # python_makesym() - Makes /usr/bin/python symlinks
19
20 inherit alternatives multilib
21
22
23 if [[ -n "${NEED_PYTHON}" ]] ; then
24 DEPEND=">=dev-lang/python-${NEED_PYTHON}"
25 RDEPEND="${DEPEND}"
26 fi
27
28 __python_eclass_test() {
29 __python_version_extract 2.3
30 echo -n "2.3 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
31 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
32 __python_version_extract 2.3.4
33 echo -n "2.3.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
34 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
35 __python_version_extract 2.3.5
36 echo -n "2.3.5 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
37 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
38 __python_version_extract 2.4
39 echo -n "2.4 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
40 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
41 __python_version_extract 2.5b3
42 echo -n "2.5b3 -> PYVER: $PYVER PYVER_MAJOR: $PYVER_MAJOR"
43 echo " PYVER_MINOR: $PYVER_MINOR PYVER_MICRO: $PYVER_MICRO"
44 }
45
46 #
47 # name: python_disable/enable_pyc
48 # desc: tells python not to automatically recompile modules to .pyc/.pyo
49 # even if the timestamps/version stamps don't match. this is
50 # done to protect sandbox.
51 #
52 # note: supported by >=dev-lang/python-2.2.3-r3 only.
53 #
54 python_disable_pyc() {
55 export PYTHON_DONTCOMPILE=1
56 }
57
58 python_enable_pyc() {
59 unset PYTHON_DONTCOMPILE
60 }
61
62 python_disable_pyc
63
64 #
65 # name: python_version
66 # desc: run without arguments and it will export the version of python
67 # currently in use as $PYVER
68 #
69
70 __python_version_extract() {
71 verstr=$1
72 export PYVER_MAJOR=${verstr:0:1}
73 export PYVER_MINOR=${verstr:2:1}
74 if [ "${verstr:3}x" = ".x" ]; then
75 export PYVER_MICRO=${verstr:4}
76 fi
77 export PYVER="${PYVER_MAJOR}.${PYVER_MINOR}"
78 }
79
80 python_version() {
81 local tmpstr
82 python=${python:-/usr/bin/python}
83 tmpstr="$(${python} -V 2>&1 )"
84 export PYVER_ALL="${tmpstr#Python }"
85 __python_version_extract $PYVER_ALL
86 }
87
88 #
89 # name: python_makesym
90 # desc: run without arguments, it will create the /usr/bin/python symlinks
91 # to the latest installed version
92 #
93 python_makesym() {
94 alternatives_auto_makesym "/usr/bin/python" "python[0-9].[0-9]"
95 alternatives_auto_makesym "/usr/bin/python2" "python2.[0-9]"
96 }
97
98 #
99 # name: python_tkinter_exists
100 # desc: run without arguments, checks if python was compiled with Tkinter
101 # support. If not, prints an error message and dies.
102 #
103 python_tkinter_exists() {
104 if ! python -c "import Tkinter" >/dev/null 2>&1; then
105 eerror "You need to recompile python with Tkinter support."
106 eerror "Try adding: 'dev-lang/python tk'"
107 eerror "in to /etc/portage/package.use"
108 echo
109 die "missing tkinter support with installed python"
110 fi
111 }
112
113 #
114 # name: python_mod_exists
115 # desc: run with the module name as an argument. it will check if a
116 # python module is installed and loadable. it will return
117 # TRUE(0) if the module exists, and FALSE(1) if the module does
118 # not exist.
119 # exam:
120 # if python_mod_exists gtk; then
121 # echo "gtk support enabled"
122 # fi
123 #
124 python_mod_exists() {
125 [ -z "$1" ] && die "${FUNCTION} requires an argument!"
126 if ! python -c "import $1" >/dev/null 2>&1; then
127 return 1
128 fi
129 return 0
130 }
131
132 #
133 # name: python_mod_compile
134 # desc: given a filename, it will pre-compile the module's .pyc and .pyo.
135 # should only be run in pkg_postinst()
136 # exam:
137 # python_mod_compile ${ROOT}usr/lib/python2.3/site-packages/pygoogle.py
138 #
139 python_mod_compile() {
140 # allow compiling for older python versions
141 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
142 PYVER=${PYTHON_OVERRIDE_PYVER}
143 else
144 python_version
145 fi
146
147 if [ -f "$1" ]; then
148 python${PYVER} -c "import py_compile; py_compile.compile('${1}')" || \
149 ewarn "Failed to compile ${1}"
150 python${PYVER} -O -c "import py_compile; py_compile.compile('${1}')" || \
151 ewarn "Failed to compile ${1}"
152 else
153 ewarn "Unable to find ${1}"
154 fi
155 }
156
157 #
158 # name: python_mod_optimize
159 # desc: if no arguments supplied, it will recompile all modules under
160 # sys.path (eg. /usr/lib/python2.3, /usr/lib/python2.3/site-packages/ ..)
161 # no recursively
162 #
163 # if supplied with arguments, it will recompile all modules recursively
164 # in the supplied directory
165 # exam:
166 # python_mod_optimize ${ROOT}usr/share/codegen
167 #
168 python_mod_optimize() {
169 local myroot
170 # strip trailing slash
171 myroot="${ROOT%/}"
172
173 # allow compiling for older python versions
174 if [ -n "${PYTHON_OVERRIDE_PYVER}" ]; then
175 PYVER=${PYTHON_OVERRIDE_PYVER}
176 else
177 python_version
178 fi
179
180 # set opts
181 if [ "${PYVER}" = "2.2" ]; then
182 compileopts=""
183 else
184 compileopts="-q"
185 fi
186
187 ebegin "Byte compiling python modules for python-${PYVER} .."
188 python${PYVER} ${myroot}/usr/$(get_libdir)/python${PYVER}/compileall.py ${compileopts} $@
189 python${PYVER} -O ${myroot}/usr/$(get_libdir)/python${PYVER}/compileall.py ${compileopts} $@
190 eend $?
191 }
192
193 #
194 # name: python_mod_cleanup
195 # desc: run with optional arguments, where arguments are directories of
196 # python modules. if none given, it will look in /usr/lib/python[0-9].[0-9]
197 #
198 # it will recursively scan all compiled python modules in the directories
199 # and determine if they are orphaned (eg. their corresponding .py is missing.)
200 # if they are, then it will remove their corresponding .pyc and .pyo
201 #
202 python_mod_cleanup() {
203 local SEARCH_PATH myroot
204
205 # strip trailing slash
206 myroot="${ROOT%/}"
207
208 if [ $# -gt 0 ]; then
209 for path in $@; do
210 SEARCH_PATH="${SEARCH_PATH} ${myroot}/${path#/}"
211 done
212 else
213 for path in ${myroot}/usr/lib*/python*/site-packages; do
214 SEARCH_PATH="${SEARCH_PATH} ${path}"
215 done
216 fi
217
218 for path in ${SEARCH_PATH}; do
219 einfo "Cleaning orphaned Python bytecode from ${path} .."
220 for obj in $(find ${path} -name *.py[co]); do
221 src_py="${obj%[co]}"
222 if [ ! -f "${src_py}" ]; then
223 einfo "Purging ${src_py}[co]"
224 rm -f ${src_py}[co]
225 fi
226 done
227 # attempt to remove directories that maybe empty
228 for dir in $(find ${path} -type d | sort -r); do
229 rmdir ${dir} 2>/dev/null
230 done
231 done
232 }

  ViewVC Help
Powered by ViewVC 1.1.20