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Revision 1.20 - (hide annotations) (download)
Sun Jan 23 20:47:42 2005 UTC (9 years, 7 months ago) by eradicator
Branch: MAIN
Changes since 1.19: +5 -10 lines
Correct ARCH setting on sparc64.

1 johnm 1.1 # Copyright 1999-2004 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 eradicator 1.20 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.19 2005/01/18 21:38:59 johnm Exp $
4 johnm 1.1 #
5 johnm 1.10 # Description: This eclass is used as a central eclass for accessing kernel
6     # related information for sources already installed.
7     # It is vital for linux-mod to function correctly, and is split
8     # out so that any ebuild behaviour "templates" are abstracted out
9     # using additional eclasses.
10 johnm 1.1 #
11 johnm 1.10 # Maintainer: John Mylchreest <johnm@gentoo.org>
12     # Copyright 2004 Gentoo Linux
13     #
14     # Please direct your bugs to the current eclass maintainer :)
15    
16     # A Couple of env vars are available to effect usage of this eclass
17     # These are as follows:
18     #
19     # Env Var Option Description
20     # KERNEL_DIR <string> The directory containing kernel the target kernel
21     # sources.
22     # CONFIG_CHECK <string> a list of .config options to check for before
23     # proceeding with the install. ie: CONFIG_CHECK="MTRR"
24     # You can also check that an option doesn't exist by
25     # prepending it with an exclamation mark (!).
26     # ie: CONFIG_CHECK="!MTRR"
27     # <CFG>_ERROR <string> The error message to display when the above check
28     # fails. <CFG> should reference the appropriate option
29     # as above. ie: MTRR_ERROR="MTRR exists in the .config
30     # but shouldn't!!"
31     # KBUILD_OUTPUT <string> This is passed on commandline, or can be set from
32     # the kernel makefile. This contains the directory
33     # which is to be used as the kernel object directory.
34    
35     # There are also a couple of variables which are set by this, and shouldn't be
36     # set by hand. These are as follows:
37     #
38     # Env Var Option Description
39     # KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1
40     # KV_MAJOR <integer> The kernel major version. ie: 2
41     # KV_MINOR <integer> The kernel minor version. ie: 6
42     # KV_PATCH <integer> The kernel patch version. ie: 9
43     # KV_EXTRA <string> The kernel EXTRAVERSION. ie: -gentoo
44     # KV_LOCAL <string> The kernel LOCALVERSION concatenation. ie: -johnm
45     # KV_DIR <string> The kernel source directory, will be null if
46     # KERNEL_DIR is invalid.
47     # KV_OUT_DIR <string> The kernel object directory. will be KV_DIR unless
48     # koutput is used. This should be used for referencing
49     # .config.
50    
51 johnm 1.1
52     ECLASS=linux-info
53     INHERITED="$INHERITED $ECLASS"
54 johnm 1.8 EXPORT_FUNCTIONS pkg_setup
55 johnm 1.1
56 eradicator 1.20 inherit toolchain-funcs
57    
58 johnm 1.1 # Overwritable environment Var's
59     # ---------------------------------------
60     KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}"
61    
62 johnm 1.7
63 johnm 1.16 # Bug fixes
64    
65     # fix to bug #75034
66     case ${ARCH} in
67     ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
68     ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
69     esac
70    
71 johnm 1.7 # Pulled from eutils as it might be more useful only being here since
72     # very few ebuilds which dont use this eclass will ever ever use these functions
73     set_arch_to_kernel() {
74 eradicator 1.20 export ARCH="$(tc-arch-kernel)"
75 johnm 1.7 }
76    
77     # set's ARCH back to what portage expects
78     set_arch_to_portage() {
79 eradicator 1.20 export ARCH="$(tc-arch)"
80 johnm 1.7 }
81    
82 johnm 1.11
83     #
84     # qeinfo "Message"
85     # -------------------
86     # qeinfo is a queit einfo call when EBUILD_PHASE
87     # should not have visible output.
88     #
89     qeinfo() {
90     local outputmsg
91     outputmsg="${@}"
92     case "${EBUILD_PHASE}" in
93     depend) unset outputmsg;;
94     clean) unset outputmsg;;
95     preinst) unset outputmsg;;
96     esac
97     [ -n "${outputmsg}" ] && einfo "${outputmsg}"
98     }
99    
100     qeerror() {
101     local outputmsg
102     outputmsg="${@}"
103     case "${EBUILD_PHASE}" in
104     depend) unset outputmsg;;
105     clean) unset outputmsg;;
106     preinst) unset outputmsg;;
107     esac
108     [ -n "${outputmsg}" ] && einfo "${outputmsg}"
109     }
110    
111    
112    
113 johnm 1.1 # File Functions
114     # ---------------------------------------
115    
116     # getfilevar accepts 2 vars as follows:
117     # getfilevar <VARIABLE> <CONFIGFILE>
118    
119     getfilevar() {
120 johnm 1.7 local ERROR workingdir basefname basedname xarch
121 johnm 1.1 ERROR=0
122 johnm 1.16
123 johnm 1.1 [ -z "${1}" ] && ERROR=1
124     [ ! -f "${2}" ] && ERROR=1
125    
126     if [ "${ERROR}" = 1 ]
127     then
128 johnm 1.6 ebeep
129     echo -e "\n"
130 johnm 1.1 eerror "getfilevar requires 2 variables, with the second a valid file."
131     eerror " getfilevar <VARIABLE> <CONFIGFILE>"
132     else
133 johnm 1.6 workingdir=${PWD}
134     basefname=$(basename ${2})
135     basedname=$(dirname ${2})
136 johnm 1.7 xarch=${ARCH}
137 johnm 1.6 unset ARCH
138    
139     cd ${basedname}
140 johnm 1.7 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \
141 johnm 1.16 make ${BUILD_FIXES} -f - e 2>/dev/null
142 johnm 1.6 cd ${workingdir}
143    
144 johnm 1.7 ARCH=${xarch}
145 johnm 1.1 fi
146     }
147    
148 johnm 1.7 linux_chkconfig_present() {
149 johnm 1.1 local RESULT
150 johnm 1.7 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
151 johnm 1.1 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
152     }
153    
154 johnm 1.7 linux_chkconfig_module() {
155 johnm 1.1 local RESULT
156 johnm 1.7 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
157 johnm 1.1 [ "${RESULT}" = "m" ] && return 0 || return 1
158     }
159    
160 johnm 1.7 linux_chkconfig_builtin() {
161 johnm 1.1 local RESULT
162 johnm 1.7 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
163 johnm 1.1 [ "${RESULT}" = "y" ] && return 0 || return 1
164     }
165    
166 johnm 1.7 linux_chkconfig_string() {
167     getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config"
168     }
169    
170 johnm 1.1 # Versioning Functions
171     # ---------------------------------------
172    
173     # kernel_is returns true when the version is the same as the passed version
174     #
175     # For Example where KV = 2.6.9
176     # kernel_is 2 4 returns false
177     # kernel_is 2 returns true
178     # kernel_is 2 6 returns true
179     # kernel_is 2 6 8 returns false
180     # kernel_is 2 6 9 returns true
181 johnm 1.3 #
182 johnm 1.1 # got the jist yet?
183    
184     kernel_is() {
185     # if we haven't determined the version yet, we need too.
186     get_version;
187    
188 mrness 1.15 local RESULT operator test value i len
189 johnm 1.12 RESULT=0
190 johnm 1.1
191 johnm 1.13 operator="="
192 johnm 1.12 if [ "${1}" == "lt" ]
193     then
194     operator="-lt"
195     shift
196     elif [ "${1}" == "gt" ]
197     then
198     operator="-gt"
199     shift
200     elif [ "${1}" == "le" ]
201     then
202     operator="-le"
203     shift
204     elif [ "${1}" == "ge" ]
205     then
206     operator="-ge"
207     shift
208     fi
209    
210 johnm 1.1 if [ -n "${1}" ]
211     then
212 johnm 1.14 value="${value}${1}"
213     test="${test}${KV_MAJOR}"
214 johnm 1.1 fi
215     if [ -n "${2}" ]
216     then
217 mrness 1.15 len=$[ 3 - ${#2} ]
218     for((i=0; i<$len; i++)); do
219     value="${value}0"
220     done
221 johnm 1.14 value="${value}${2}"
222 mrness 1.15
223     len=$[ 3 - ${#KV_MINOR} ]
224     for((i=0; i<$len; i++)); do
225     test="${test}0"
226     done
227 johnm 1.14 test="${test}${KV_MINOR}"
228 johnm 1.1 fi
229     if [ -n "${3}" ]
230     then
231 mrness 1.15 len=$[ 3 - ${#3} ]
232     for((i=0; i<$len; i++)); do
233     value="${value}0"
234     done
235 johnm 1.14 value="${value}${3}"
236 mrness 1.15
237     len=$[ 3 - ${#KV_PATCH} ]
238     for((i=0; i<$len; i++)); do
239     test="${test}0"
240     done
241 johnm 1.14 test="${test}${KV_PATCH}"
242 johnm 1.1 fi
243 johnm 1.14
244     [ ${test} ${operator} ${value} ] && return 0 || return 1
245 johnm 1.1 }
246    
247     get_version() {
248 johnm 1.4 local kbuild_output
249    
250 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
251     # we can force by unsetting KV_FULL
252 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
253 johnm 1.1
254     # if we dont know KV_FULL, then we need too.
255     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
256     unset KV_DIR
257    
258     # KV_DIR will contain the full path to the sources directory we should use
259 johnm 1.11 qeinfo "Determining the location of the kernel source code"
260 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
261     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
262    
263     if [ -z "${KV_DIR}" ]
264     then
265 johnm 1.11 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
266     qeinfo "This package requires Linux sources."
267 johnm 1.7 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
268 johnm 1.11 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
269     qeinfo "(or the kernel you wish to build against)."
270     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
271 johnm 1.7 else
272 johnm 1.11 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
273 johnm 1.7 fi
274 johnm 1.19 return 1
275 johnm 1.7 fi
276    
277 johnm 1.11 qeinfo "Found kernel source directory:"
278     qeinfo " ${KV_DIR}"
279 johnm 1.7
280     if [ ! -s "${KV_DIR}/Makefile" ]
281     then
282 johnm 1.11 qeerror "Could not find a Makefile in the kernel source directory."
283     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
284 johnm 1.19 return 1
285 johnm 1.7 fi
286 johnm 1.1
287 johnm 1.4 # OK so now we know our sources directory, but they might be using
288     # KBUILD_OUTPUT, and we need this for .config and localversions-*
289     # so we better find it eh?
290     # do we pass KBUILD_OUTPUT on the CLI?
291     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
292    
293 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
294 johnm 1.4 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)"
295     OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
296    
297 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
298     # directory name to find version information as this seems insane.
299     # so we parse ${KV_DIR}/Makefile
300     KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)"
301     KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)"
302     KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)"
303     KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)"
304 johnm 1.4
305 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
306     then
307 johnm 1.11 qeerror "Could not detect kernel version."
308 johnm 1.19 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
309     return 1
310 johnm 1.7 fi
311    
312 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
313 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
314     # This *WILL* break if the user is using localversions, but we assume it was
315     # caught before this if they are.
316     [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \
317 johnm 1.7 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}"
318 johnm 1.4
319     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
320     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
321     if [ -n "${KV_OUT_DIR}" ];
322     then
323 johnm 1.11 qeinfo "Found kernel object directory:"
324     qeinfo " ${KV_OUT_DIR}"
325 johnm 1.4
326     KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)"
327     fi
328     # and if we STILL haven't got it, then we better just set it to KV_DIR
329     KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
330    
331     KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)"
332 johnm 1.7 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
333     KV_LOCAL="${KV_LOCAL//\"/}"
334 johnm 1.1
335     # And we should set KV_FULL to the full expanded version
336     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
337    
338 johnm 1.11 qeinfo "Found sources for kernel version:"
339     qeinfo " ${KV_FULL}"
340 johnm 1.9
341     if [ ! -s "${KV_OUT_DIR}/.config" ]
342     then
343 johnm 1.11 qeerror "Could not find a usable .config in the kernel source directory."
344 johnm 1.12 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
345     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
346     qeerror "it points to the necessary object directory so that it might find .config."
347 johnm 1.19 return 1
348 johnm 1.9 fi
349 johnm 1.19
350     return 0
351 johnm 1.1 }
352    
353    
354    
355    
356     # ebuild check functions
357     # ---------------------------------------
358    
359     check_kernel_built() {
360     # if we haven't determined the version yet, we need too.
361     get_version;
362    
363 johnm 1.16 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
364 johnm 1.1 then
365 johnm 1.16 eerror "These sources have not yet been prepared."
366     eerror "We cannot build against an unprepared tree."
367 johnm 1.1 eerror "To resolve this, please type the following:"
368     eerror
369     eerror "# cd ${KV_DIR}"
370     eerror "# make oldconfig"
371 johnm 1.16 eerror "# make modules_prepare"
372 johnm 1.1 eerror
373     eerror "Then please try merging this module again."
374     die "Kernel sources need compiling first"
375     fi
376     }
377    
378     check_modules_supported() {
379     # if we haven't determined the version yet, we need too.
380     get_version;
381    
382 johnm 1.7 if ! linux_chkconfig_builtin "MODULES"
383 johnm 1.1 then
384     eerror "These sources do not support loading external modules."
385     eerror "to be able to use this module please enable \"Loadable modules support\""
386     eerror "in your kernel, recompile and then try merging this module again."
387 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
388 johnm 1.3 fi
389     }
390    
391     check_extra_config() {
392 johnm 1.17 local config negate error local_error i n temp_config
393 johnm 1.3
394     # if we haven't determined the version yet, we need too.
395     get_version;
396    
397     einfo "Checking for suitable kernel configuration options"
398     for config in ${CONFIG_CHECK}
399     do
400     negate="${config:0:1}"
401     if [ "${negate}" == "!" ];
402     then
403     config="${config:1}"
404 johnm 1.7 if linux_chkconfig_present ${config}
405 johnm 1.3 then
406 johnm 1.7 local_error="${config}_ERROR"
407     local_error="${!local_error}"
408     [ -n "${local_error}" ] && eerror " ${local_error}" || \
409     eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is."
410 johnm 1.3 error=1
411     fi
412 johnm 1.17 elif [ "${negate}" == "@" ];
413     then
414     # we never call this unless we are using MODULE_NAMES
415    
416     config="${config:1}"
417     temp_config="${config//*:}"
418     config="${config//:*}"
419     if linux_chkconfig_present ${config}
420     then
421     local_error="${config}_ERROR"
422     local_error="${!local_error}"
423     [ -n "${local_error}" ] && eerror " ${local_error}" || \
424     eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is."
425    
426     for i in ${MODULE_NAMES}
427     do
428     n="${i//${temp_config}}"
429 johnm 1.18 [ -z "${n//(*}" ] && MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
430 johnm 1.17 done
431     error=0
432     fi
433 johnm 1.3 else
434 johnm 1.7 if ! linux_chkconfig_present ${config}
435 johnm 1.3 then
436 johnm 1.7 local_error="${config}_ERROR"
437     local_error="${!local_error}"
438     [ -n "${local_error}" ] && eerror " ${local_error}" || \
439     eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't"
440 johnm 1.3 error=1
441     fi
442     fi
443     done
444    
445 johnm 1.17 if [ "${error}" == 1 ] ;
446 johnm 1.3 then
447     eerror "Please check to make sure these options are set correctly."
448     eerror "Once you have satisfied these options, please try merging"
449     eerror "this package again."
450 johnm 1.7 die "Incorrect kernel configuration options"
451 johnm 1.1 fi
452     }
453    
454     check_zlibinflate() {
455     # if we haven't determined the version yet, we need too.
456     get_version;
457    
458     # although I restructured this code - I really really really dont support it!
459    
460     # bug #27882 - zlib routines are only linked into the kernel
461     # if something compiled into the kernel calls them
462     #
463     # plus, for the cloop module, it appears that there's no way
464     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
465     # is on
466    
467     local INFLATE
468     local DEFLATE
469    
470     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
471    
472     ebegin "checking ZLIB_INFLATE"
473     getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config
474     eend $?
475     [ "$?" != 0 ] && die
476    
477     ebegin "checking ZLIB_DEFLATE"
478     getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config
479     eend $?
480     [ "$?" != 0 ] && die
481    
482    
483     local LINENO_START
484     local LINENO_END
485     local SYMBOLS
486     local x
487    
488     LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
489     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
490     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
491     (( LINENO_END = $LINENO_END - 1 ))
492 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
493 johnm 1.1
494     # okay, now we have a list of symbols
495     # we need to check each one in turn, to see whether it is set or not
496     for x in $SYMBOLS ; do
497     if [ "${!x}" = "y" ]; then
498     # we have a winner!
499     einfo "${x} ensures zlib is linked into your kernel - excellent"
500     return 0
501     fi
502     done
503    
504     eerror
505     eerror "This kernel module requires ZLIB library support."
506     eerror "You have enabled zlib support in your kernel, but haven't enabled"
507     eerror "enabled any option that will ensure that zlib is linked into your"
508     eerror "kernel."
509     eerror
510     eerror "Please ensure that you enable at least one of these options:"
511     eerror
512    
513     for x in $SYMBOLS ; do
514     eerror " * $x"
515     done
516    
517     eerror
518     eerror "Please remember to recompile and install your kernel, and reboot"
519     eerror "into your new kernel before attempting to load this kernel module."
520    
521     die "Kernel doesn't include zlib support"
522     }
523 johnm 1.8
524     ################################
525     # Default pkg_setup
526     # Also used when inheriting linux-mod to force a get_version call
527    
528     linux-info_pkg_setup() {
529 johnm 1.19 get_version || die "Unable to calculate Linux Kernel version"
530 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
531 johnm 1.8 }

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