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Revision 1.9 - (show annotations) (download)
Fri Dec 10 22:43:03 2004 UTC (9 years, 8 months ago) by johnm
Branch: MAIN
Changes since 1.8: +8 -8 lines
Moving .config check, so this is purely a sanity test now. If we use LOCALVERSION in the .config, we will laready have failed the test but the sanity check will cause it to bail. Fixes bug: #73726

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/linux-info.eclass,v 1.8 2004/12/06 18:33:10 johnm Exp $
4 #
5 # This eclass provides functions for querying the installed kernel
6 # source version, selected kernel options etc.
7 #
8
9 ECLASS=linux-info
10 INHERITED="$INHERITED $ECLASS"
11 EXPORT_FUNCTIONS pkg_setup
12
13 # Overwritable environment Var's
14 # ---------------------------------------
15 KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}"
16
17
18 # Pulled from eutils as it might be more useful only being here since
19 # very few ebuilds which dont use this eclass will ever ever use these functions
20 set_arch_to_kernel() {
21 export PORTAGE_ARCH="${ARCH}"
22 case ${ARCH} in
23 x86) export ARCH="i386";;
24 amd64) export ARCH="x86_64";;
25 hppa) export ARCH="parisc";;
26 mips) export ARCH="mips";;
27 *) export ARCH="${ARCH}";;
28 esac
29 }
30
31 # set's ARCH back to what portage expects
32 set_arch_to_portage() {
33 export ARCH="${PORTAGE_ARCH}"
34 }
35
36 # File Functions
37 # ---------------------------------------
38
39 # getfilevar accepts 2 vars as follows:
40 # getfilevar <VARIABLE> <CONFIGFILE>
41
42 getfilevar() {
43 local ERROR workingdir basefname basedname xarch
44 ERROR=0
45
46 [ -z "${1}" ] && ERROR=1
47 [ ! -f "${2}" ] && ERROR=1
48
49 if [ "${ERROR}" = 1 ]
50 then
51 ebeep
52 echo -e "\n"
53 eerror "getfilevar requires 2 variables, with the second a valid file."
54 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
55 else
56 workingdir=${PWD}
57 basefname=$(basename ${2})
58 basedname=$(dirname ${2})
59 xarch=${ARCH}
60 unset ARCH
61
62 cd ${basedname}
63 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \
64 make -f - e 2>/dev/null
65 cd ${workingdir}
66
67 ARCH=${xarch}
68 fi
69 }
70
71 linux_chkconfig_present() {
72 local RESULT
73 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
74 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
75 }
76
77 linux_chkconfig_module() {
78 local RESULT
79 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
80 [ "${RESULT}" = "m" ] && return 0 || return 1
81 }
82
83 linux_chkconfig_builtin() {
84 local RESULT
85 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
86 [ "${RESULT}" = "y" ] && return 0 || return 1
87 }
88
89 linux_chkconfig_string() {
90 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config"
91 }
92
93 # Versioning Functions
94 # ---------------------------------------
95
96 # kernel_is returns true when the version is the same as the passed version
97 #
98 # For Example where KV = 2.6.9
99 # kernel_is 2 4 returns false
100 # kernel_is 2 returns true
101 # kernel_is 2 6 returns true
102 # kernel_is 2 6 8 returns false
103 # kernel_is 2 6 9 returns true
104 #
105 # got the jist yet?
106
107 kernel_is() {
108 # if we haven't determined the version yet, we need too.
109 get_version;
110
111 local RESULT
112 RESULT=1
113
114 if [ -n "${1}" ]
115 then
116 [ "${1}" = "${KV_MAJOR}" ] && RESULT=0
117 fi
118
119 if [ -n "${2}" ]
120 then
121 RESULT=1
122 [ "${2}" = "${KV_MINOR}" ] && RESULT=0
123 fi
124
125 if [ -n "${3}" ]
126 then
127 RESULT=1
128 [ "${3}" = "${KV_PATCH}" ] && RESULT=0
129 fi
130 return ${RESULT}
131 }
132
133 get_version() {
134 local kbuild_output
135
136 # no need to execute this twice assuming KV_FULL is populated.
137 # we can force by unsetting KV_FULL
138 [ -n "${KV_FULL}" ] && return
139
140 # if we dont know KV_FULL, then we need too.
141 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
142 unset KV_DIR
143
144 # KV_DIR will contain the full path to the sources directory we should use
145 einfo "Determining the location of the kernel source code"
146 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
147 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
148
149 if [ -z "${KV_DIR}" ]
150 then
151 eerror "Unable to find kernel sources at ${KERNEL_DIR}"
152 einfo "This package requires Linux sources."
153 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
154 einfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
155 einfo "(or the kernel you wish to build against)."
156 einfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
157 else
158 einfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
159 fi
160 die "Cannot locate Linux sources at ${KERNEL_DIR}"
161 fi
162
163 einfo "Found kernel source directory:"
164 einfo " ${KV_DIR}"
165
166 if [ ! -s "${KV_DIR}/Makefile" ]
167 then
168 eerror "Could not find a Makefile in the kernel source directory."
169 eerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
170 die "Makefile not found in ${KV_DIR}"
171 fi
172
173 # OK so now we know our sources directory, but they might be using
174 # KBUILD_OUTPUT, and we need this for .config and localversions-*
175 # so we better find it eh?
176 # do we pass KBUILD_OUTPUT on the CLI?
177 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
178
179 # And if we didn't pass it, we can take a nosey in the Makefile
180 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)"
181 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
182
183 # And contrary to existing functions I feel we shouldn't trust the
184 # directory name to find version information as this seems insane.
185 # so we parse ${KV_DIR}/Makefile
186 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)"
187 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)"
188 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)"
189 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)"
190
191 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
192 then
193 eerror "Could not detect kernel version."
194 eerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
195 die "Could not parse version info from ${KV_DIR}/Makefile"
196 fi
197
198 # and in newer versions we can also pull LOCALVERSION if it is set.
199 # but before we do this, we need to find if we use a different object directory.
200 # This *WILL* break if the user is using localversions, but we assume it was
201 # caught before this if they are.
202 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \
203 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}"
204
205 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
206 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
207 if [ -n "${KV_OUT_DIR}" ];
208 then
209 einfo "Found kernel object directory:"
210 einfo " ${KV_OUT_DIR}"
211
212 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)"
213 fi
214 # and if we STILL haven't got it, then we better just set it to KV_DIR
215 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
216
217 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)"
218 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
219 KV_LOCAL="${KV_LOCAL//\"/}"
220
221 # And we should set KV_FULL to the full expanded version
222 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
223
224 einfo "Found sources for kernel version:"
225 einfo " ${KV_FULL}"
226
227 if [ ! -s "${KV_OUT_DIR}/.config" ]
228 then
229 eerror "Could not find a usable .config in the kernel source directory."
230 eerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources"
231 die ".config not found in ${KV_OUT_DIR}"
232 fi
233 }
234
235
236
237
238 # ebuild check functions
239 # ---------------------------------------
240
241 check_kernel_built() {
242 # if we haven't determined the version yet, we need too.
243 get_version;
244
245 if [ ! -f "${KV_OUT_DIR}/System.map" ]
246 then
247 eerror "These sources have not yet been compiled."
248 eerror "We cannot build against an uncompiled tree."
249 eerror "To resolve this, please type the following:"
250 eerror
251 eerror "# cd ${KV_DIR}"
252 eerror "# make oldconfig"
253 eerror "# make bzImage modules modules_install"
254 eerror
255 eerror "Then please try merging this module again."
256 die "Kernel sources need compiling first"
257 fi
258 }
259
260 check_modules_supported() {
261 # if we haven't determined the version yet, we need too.
262 get_version;
263
264 if ! linux_chkconfig_builtin "MODULES"
265 then
266 eerror "These sources do not support loading external modules."
267 eerror "to be able to use this module please enable \"Loadable modules support\""
268 eerror "in your kernel, recompile and then try merging this module again."
269 die "No support for external modules in ${KV_FULL} config"
270 fi
271 }
272
273 check_extra_config() {
274 local config negate error local_error
275
276 # if we haven't determined the version yet, we need too.
277 get_version;
278
279 einfo "Checking for suitable kernel configuration options"
280 for config in ${CONFIG_CHECK}
281 do
282 negate="${config:0:1}"
283 if [ "${negate}" == "!" ];
284 then
285 config="${config:1}"
286 if linux_chkconfig_present ${config}
287 then
288 local_error="${config}_ERROR"
289 local_error="${!local_error}"
290 [ -n "${local_error}" ] && eerror " ${local_error}" || \
291 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is."
292 error=1
293 fi
294 else
295 if ! linux_chkconfig_present ${config}
296 then
297 local_error="${config}_ERROR"
298 local_error="${!local_error}"
299 [ -n "${local_error}" ] && eerror " ${local_error}" || \
300 eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't"
301 error=1
302 fi
303 fi
304 done
305
306 if [ -n "${error}" ] ;
307 then
308 eerror "Please check to make sure these options are set correctly."
309 eerror "Once you have satisfied these options, please try merging"
310 eerror "this package again."
311 die "Incorrect kernel configuration options"
312 fi
313 }
314
315 check_zlibinflate() {
316 # if we haven't determined the version yet, we need too.
317 get_version;
318
319 # although I restructured this code - I really really really dont support it!
320
321 # bug #27882 - zlib routines are only linked into the kernel
322 # if something compiled into the kernel calls them
323 #
324 # plus, for the cloop module, it appears that there's no way
325 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
326 # is on
327
328 local INFLATE
329 local DEFLATE
330
331 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
332
333 ebegin "checking ZLIB_INFLATE"
334 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config
335 eend $?
336 [ "$?" != 0 ] && die
337
338 ebegin "checking ZLIB_DEFLATE"
339 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config
340 eend $?
341 [ "$?" != 0 ] && die
342
343
344 local LINENO_START
345 local LINENO_END
346 local SYMBOLS
347 local x
348
349 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
350 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
351 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
352 (( LINENO_END = $LINENO_END - 1 ))
353 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
354
355 # okay, now we have a list of symbols
356 # we need to check each one in turn, to see whether it is set or not
357 for x in $SYMBOLS ; do
358 if [ "${!x}" = "y" ]; then
359 # we have a winner!
360 einfo "${x} ensures zlib is linked into your kernel - excellent"
361 return 0
362 fi
363 done
364
365 eerror
366 eerror "This kernel module requires ZLIB library support."
367 eerror "You have enabled zlib support in your kernel, but haven't enabled"
368 eerror "enabled any option that will ensure that zlib is linked into your"
369 eerror "kernel."
370 eerror
371 eerror "Please ensure that you enable at least one of these options:"
372 eerror
373
374 for x in $SYMBOLS ; do
375 eerror " * $x"
376 done
377
378 eerror
379 eerror "Please remember to recompile and install your kernel, and reboot"
380 eerror "into your new kernel before attempting to load this kernel module."
381
382 die "Kernel doesn't include zlib support"
383 }
384
385 ################################
386 # Default pkg_setup
387 # Also used when inheriting linux-mod to force a get_version call
388
389 linux-info_pkg_setup() {
390 get_version;
391 }

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