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Revision 1.62 - (hide annotations) (download)
Sun Sep 6 22:54:58 2009 UTC (5 years ago) by robbat2
Branch: MAIN
Changes since 1.61: +78 -17 lines
Bug #283320: Part of the migration work to make linux-info non-fatal. Currently gets enabled with I_KNOW_WHAT_I_AM_DOING in the env for the .config reading. Also uses the currently running version if no sources at all available.

1 vapier 1.37 # Copyright 1999-2006 Gentoo Foundation
2 johnm 1.1 # Distributed under the terms of the GNU General Public License v2
3 robbat2 1.62 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.61 2009/08/30 22:37:06 robbat2 Exp $
4 johnm 1.1 #
5 phreak 1.52 # Original author: John Mylchreest <johnm@gentoo.org>
6     # Maintainer: kernel-misc@gentoo.org
7 johnm 1.10 #
8     # Please direct your bugs to the current eclass maintainer :)
9    
10 dsd 1.56 # @ECLASS: linux-info.eclass
11     # @MAINTAINER:
12     # kernel-misc@gentoo.org
13     # @BLURB: eclass used for accessing kernel related information
14     # @DESCRIPTION:
15     # This eclass is used as a central eclass for accessing kernel
16 robbat2 1.62 # related information for source or binary already installed.
17 dsd 1.56 # It is vital for linux-mod.eclass to function correctly, and is split
18     # out so that any ebuild behaviour "templates" are abstracted out
19     # using additional eclasses.
20 robbat2 1.62 #
21     # "kernel config" in this file means:
22     # The .config of the currently installed sources is used as the first
23     # preference, with a fall-back to bundled config (/proc/config.gz) if available.
24 dsd 1.56
25 johnm 1.10 # A Couple of env vars are available to effect usage of this eclass
26     # These are as follows:
27 dsd 1.56
28     # @ECLASS-VARIABLE: KERNEL_DIR
29     # @DESCRIPTION:
30     # A string containing the directory of the target kernel sources. The default value is
31     # "/usr/src/linux"
32    
33     # @ECLASS-VARIABLE: CONFIG_CHECK
34     # @DESCRIPTION:
35     # A string containing a list of .config options to check for before
36     # proceeding with the install.
37     #
38     # e.g.: CONFIG_CHECK="MTRR"
39     #
40     # You can also check that an option doesn't exist by
41     # prepending it with an exclamation mark (!).
42     #
43     # e.g.: CONFIG_CHECK="!MTRR"
44     #
45 robbat2 1.62 # To simply warn about a missing option, prepend a '~'.
46     # It may be combined with '!'.
47     #
48     # In general, most checks should be non-fatal. The only time fatal checks should
49     # be used is for building kernel modules or cases that a compile will fail
50     # without the option.
51     #
52     # This is to allow usage of binary kernels, and minimal systems without kernel
53     # sources.
54 dsd 1.56
55     # @ECLASS-VARIABLE: ERROR_<CFG>
56     # @DESCRIPTION:
57     # A string containing the error message to display when the check against CONFIG_CHECK
58     # fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
59 swegener 1.29 #
60 dsd 1.56 # e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
61    
62     # @ECLASS-VARIABLE: KBUILD_OUTPUT
63     # @DESCRIPTION:
64     # A string passed on commandline, or set from the kernel makefile. It contains the directory
65     # which is to be used as the kernel object directory.
66 johnm 1.10
67     # There are also a couple of variables which are set by this, and shouldn't be
68     # set by hand. These are as follows:
69 dsd 1.56
70     # @ECLASS-VARIABLE: KV_FULL
71     # @DESCRIPTION:
72     # A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
73    
74     # @ECLASS-VARIABLE: KV_MAJOR
75     # @DESCRIPTION:
76     # A read-only variable. It's an integer containing the kernel major version. ie: 2
77    
78     # @ECLASS-VARIABLE: KV_MINOR
79     # @DESCRIPTION:
80     # A read-only variable. It's an integer containing the kernel minor version. ie: 6
81    
82     # @ECLASS-VARIABLE: KV_PATCH
83     # @DESCRIPTION:
84     # A read-only variable. It's an integer containing the kernel patch version. ie: 9
85    
86     # @ECLASS-VARIABLE: KV_EXTRA
87     # @DESCRIPTION:
88     # A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
89    
90     # @ECLASS-VARIABLE: KV_LOCAL
91     # @DESCRIPTION:
92     # A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
93    
94     # @ECLASS-VARIABLE: KV_DIR
95     # @DESCRIPTION:
96     # A read-only variable. It's a string containing the kernel source directory, will be null if
97     # KERNEL_DIR is invalid.
98    
99     # @ECLASS-VARIABLE: KV_OUT_DIR
100     # @DESCRIPTION:
101     # A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
102     # KBUILD_OUTPUT is used. This should be used for referencing .config.
103 johnm 1.10
104 robbat2 1.62 # @ECLASS-VARIABLE: I_KNOW_WHAT_I_AM_DOING
105     # @DESCRIPTION:
106     # Temporary variable for the migration to making linux-info non-fatal.
107    
108 johnm 1.21 # And to ensure all the weirdness with crosscompile
109 johnm 1.23 inherit toolchain-funcs versionator
110 johnm 1.1
111 johnm 1.8 EXPORT_FUNCTIONS pkg_setup
112 johnm 1.1
113 exg 1.40 DEPEND="kernel_linux? ( virtual/linux-sources )"
114 brix 1.39 RDEPEND=""
115    
116 johnm 1.1 # Overwritable environment Var's
117     # ---------------------------------------
118 johnm 1.21 KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
119 johnm 1.1
120 johnm 1.7
121 johnm 1.16 # Bug fixes
122     # fix to bug #75034
123     case ${ARCH} in
124 swegener 1.29 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
125     ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
126 johnm 1.16 esac
127    
128 vapier 1.51 # @FUNCTION: set_arch_to_kernel
129     # @DESCRIPTION:
130     # Set the env ARCH to match what the kernel expects.
131     set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
132     # @FUNCTION: set_arch_to_portage
133     # @DESCRIPTION:
134     # Set the env ARCH to match what portage expects.
135     set_arch_to_portage() { export ARCH=$(tc-arch); }
136 johnm 1.11
137     # qeinfo "Message"
138     # -------------------
139 johnm 1.21 # qeinfo is a quiet einfo call when EBUILD_PHASE
140 johnm 1.11 # should not have visible output.
141 johnm 1.21 qout() {
142     local outputmsg type
143     type=${1}
144     shift
145     outputmsg="${@}"
146 wolf31o2 1.26 case "${EBUILD_PHASE}" in
147     depend) unset outputmsg;;
148     clean) unset outputmsg;;
149     preinst) unset outputmsg;;
150     esac
151     [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
152 johnm 1.11 }
153    
154 johnm 1.21 qeinfo() { qout einfo "${@}" ; }
155     qeerror() { qout eerror "${@}" ; }
156 johnm 1.11
157 johnm 1.1 # File Functions
158     # ---------------------------------------
159    
160 dsd 1.56 # @FUNCTION: getfilevar
161     # @USAGE: variable configfile
162     # @RETURN: the value of the variable
163     # @DESCRIPTION:
164 robbat2 1.61 # It detects the value of the variable defined in the file configfile. This is
165     # done by including the configfile, and printing the variable with Make.
166     # It WILL break if your makefile has missing dependencies!
167 johnm 1.1 getfilevar() {
168 dsd 1.57 local ERROR basefname basedname myARCH="${ARCH}"
169 johnm 1.1 ERROR=0
170 johnm 1.16
171 johnm 1.1 [ -z "${1}" ] && ERROR=1
172     [ ! -f "${2}" ] && ERROR=1
173    
174     if [ "${ERROR}" = 1 ]
175     then
176 johnm 1.6 echo -e "\n"
177 johnm 1.1 eerror "getfilevar requires 2 variables, with the second a valid file."
178     eerror " getfilevar <VARIABLE> <CONFIGFILE>"
179     else
180 johnm 1.34 basefname="$(basename ${2})"
181     basedname="$(dirname ${2})"
182 johnm 1.6 unset ARCH
183 johnm 1.21
184 johnm 1.42 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
185 dsd 1.57 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
186 johnm 1.21
187     ARCH=${myARCH}
188 johnm 1.1 fi
189     }
190    
191 robbat2 1.61 # @FUNCTION: getfilevar_noexec
192     # @USAGE: variable configfile
193     # @RETURN: the value of the variable
194     # @DESCRIPTION:
195     # It detects the value of the variable defined in the file configfile.
196     # This is done with sed matching an expression only. If the variable is defined,
197     # you will run into problems. See getfilevar for those cases.
198     getfilevar_noexec() {
199 robbat2 1.62 local ERROR basefname basedname mycat myARCH="${ARCH}"
200 robbat2 1.61 ERROR=0
201 robbat2 1.62 mycat='cat'
202 robbat2 1.61
203     [ -z "${1}" ] && ERROR=1
204     [ ! -f "${2}" ] && ERROR=1
205 robbat2 1.62 [ "${2#.gz}" != "${2}" ] && mycat='zcat'
206 robbat2 1.61
207     if [ "${ERROR}" = 1 ]
208     then
209     echo -e "\n"
210     eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
211     eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
212     else
213 robbat2 1.62 ${mycat} "${2}" | \
214 robbat2 1.61 sed -n \
215     -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
216     s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
217     s,[[:space:]]*\$,,g ;
218     p
219 robbat2 1.62 }"
220 robbat2 1.61 fi
221     }
222    
223 dsd 1.53
224 robbat2 1.62 # @FUNCTION: linux_config_src_exists
225     # @RETURN: true or false
226     # @DESCRIPTION:
227     # It returns true if .config exists in a build directory otherwise false
228     linux_config_src_exists() {
229     [ -s "${KV_OUT_DIR}/.config" ]
230     }
231    
232     # @FUNCTION: linux_config_bin_exists
233     # @RETURN: true or false
234     # @DESCRIPTION:
235     # It returns true if .config exists in /proc, otherwise false
236     linux_config_bin_exists() {
237     [ -s "/proc/config.gz" ]
238     }
239    
240 dsd 1.56 # @FUNCTION: linux_config_exists
241     # @RETURN: true or false
242     # @DESCRIPTION:
243     # It returns true if .config exists otherwise false
244 robbat2 1.62 #
245     # This function MUST be checked before using any of the linux_chkconfig_*
246     # functions.
247 dsd 1.53 linux_config_exists() {
248 robbat2 1.62 linux_config_src_exists || linux_config_bin_exists
249 dsd 1.53 }
250    
251 dsd 1.56 # @FUNCTION: require_configured_kernel
252     # @DESCRIPTION:
253     # This function verifies that the current kernel is configured (it checks against the existence of .config)
254     # otherwise it dies.
255 dsd 1.53 require_configured_kernel() {
256 robbat2 1.62 if ! linux_config_src_exists; then
257 dsd 1.53 qeerror "Could not find a usable .config in the kernel source directory."
258     qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
259     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
260     qeerror "it points to the necessary object directory so that it might find .config."
261     die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
262     fi
263     }
264    
265 dsd 1.56 # @FUNCTION: linux_chkconfig_present
266     # @USAGE: option
267     # @RETURN: true or false
268     # @DESCRIPTION:
269 loki_val 1.59 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
271     # MUST call linux_config_exists first.
272 johnm 1.7 linux_chkconfig_present() {
273 johnm 1.1 local RESULT
274 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
275     local config
276     config="${KV_OUT_DIR}/.config"
277     [ ! -f "${config}" ] && config="/proc/config.gz"
278     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
279 johnm 1.1 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
280     }
281    
282 dsd 1.56 # @FUNCTION: linux_chkconfig_module
283     # @USAGE: option
284     # @RETURN: true or false
285     # @DESCRIPTION:
286     # It checks that CONFIG_<option>=m is present in the current kernel .config
287 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
288     # MUST call linux_config_exists first.
289 johnm 1.7 linux_chkconfig_module() {
290 johnm 1.1 local RESULT
291 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
292     local config
293     config="${KV_OUT_DIR}/.config"
294     [ ! -f "${config}" ] && config="/proc/config.gz"
295     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
296 johnm 1.1 [ "${RESULT}" = "m" ] && return 0 || return 1
297     }
298    
299 dsd 1.56 # @FUNCTION: linux_chkconfig_builtin
300     # @USAGE: option
301     # @RETURN: true or false
302     # @DESCRIPTION:
303     # It checks that CONFIG_<option>=y is present in the current kernel .config
304 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
305     # MUST call linux_config_exists first.
306 johnm 1.7 linux_chkconfig_builtin() {
307 johnm 1.1 local RESULT
308 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
309     local config
310     config="${KV_OUT_DIR}/.config"
311     [ ! -f "${config}" ] && config="/proc/config.gz"
312     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
313 johnm 1.1 [ "${RESULT}" = "y" ] && return 0 || return 1
314     }
315    
316 dsd 1.56 # @FUNCTION: linux_chkconfig_string
317     # @USAGE: option
318     # @RETURN: CONFIG_<option>
319     # @DESCRIPTION:
320     # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
321 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
322     # MUST call linux_config_exists first.
323 johnm 1.7 linux_chkconfig_string() {
324 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
325     local config
326     config="${KV_OUT_DIR}/.config"
327     [ ! -f "${config}" ] && config="/proc/config.gz"
328     getfilevar_noexec "CONFIG_${1}" "${config}"
329 johnm 1.7 }
330    
331 johnm 1.1 # Versioning Functions
332     # ---------------------------------------
333    
334 dsd 1.56 # @FUNCTION: kernel_is
335     # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
336     # @RETURN: true or false
337     # @DESCRIPTION:
338     # It returns true when the current kernel version satisfies the comparison against the passed version.
339     # -eq is the default comparison.
340 johnm 1.1 #
341 dsd 1.56 # @CODE
342 johnm 1.1 # For Example where KV = 2.6.9
343 dsd 1.56 # kernel_is 2 4 returns false
344     # kernel_is 2 returns true
345     # kernel_is 2 6 returns true
346     # kernel_is 2 6 8 returns false
347     # kernel_is 2 6 9 returns true
348     # @CODE
349    
350 johnm 1.1 # got the jist yet?
351    
352     kernel_is() {
353 dsd 1.53 # if we haven't determined the version yet, we need to.
354     get_version
355 johnm 1.23 local operator test value x=0 y=0 z=0
356    
357     case ${1} in
358     lt) operator="-lt"; shift;;
359     gt) operator="-gt"; shift;;
360     le) operator="-le"; shift;;
361     ge) operator="-ge"; shift;;
362     eq) operator="-eq"; shift;;
363     *) operator="-eq";;
364     esac
365    
366     for x in ${@}; do
367     for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
368     value="${value}${x}"
369     z=$((${z} + 1))
370    
371     case ${z} in
372     1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
373     test="${test}${KV_MAJOR}";;
374     2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
375     test="${test}${KV_MINOR}";;
376     3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
377     test="${test}${KV_PATCH}";;
378     *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
379     esac
380     done
381 robbat2 1.61
382 swegener 1.29 [ ${test} ${operator} ${value} ] && return 0 || return 1
383 johnm 1.1 }
384    
385 johnm 1.30 get_localversion() {
386     local lv_list i x
387    
388     # ignore files with ~ in it.
389     for i in $(ls ${1}/localversion* 2>/dev/null); do
390     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
391     done
392    
393     for i in ${lv_list}; do
394     x="${x}$(<${i})"
395     done
396     x=${x/ /}
397     echo ${x}
398     }
399    
400 dsd 1.56 # @FUNCTION: get_version
401     # @DESCRIPTION:
402     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
403     # (if KV_FULL is already set it does nothing).
404     #
405     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
406     #
407     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
408     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
409     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
410 johnm 1.1 get_version() {
411 johnm 1.4 local kbuild_output
412 swegener 1.29
413 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
414     # we can force by unsetting KV_FULL
415 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
416 johnm 1.1
417     # if we dont know KV_FULL, then we need too.
418     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
419     unset KV_DIR
420    
421     # KV_DIR will contain the full path to the sources directory we should use
422 johnm 1.11 qeinfo "Determining the location of the kernel source code"
423 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
424     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
425 swegener 1.29
426 johnm 1.1 if [ -z "${KV_DIR}" ]
427     then
428 johnm 1.11 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
429     qeinfo "This package requires Linux sources."
430 johnm 1.7 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
431 johnm 1.11 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
432     qeinfo "(or the kernel you wish to build against)."
433     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
434 johnm 1.7 else
435 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."
436 johnm 1.7 fi
437 johnm 1.19 return 1
438 johnm 1.7 fi
439    
440 johnm 1.11 qeinfo "Found kernel source directory:"
441     qeinfo " ${KV_DIR}"
442 johnm 1.7
443     if [ ! -s "${KV_DIR}/Makefile" ]
444     then
445 johnm 1.11 qeerror "Could not find a Makefile in the kernel source directory."
446     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
447 johnm 1.19 return 1
448 johnm 1.7 fi
449 swegener 1.29
450 johnm 1.4 # OK so now we know our sources directory, but they might be using
451     # KBUILD_OUTPUT, and we need this for .config and localversions-*
452     # so we better find it eh?
453     # do we pass KBUILD_OUTPUT on the CLI?
454     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
455 swegener 1.29
456 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
457 robbat2 1.61 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
458 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
459 swegener 1.29
460 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
461     # directory name to find version information as this seems insane.
462     # so we parse ${KV_DIR}/Makefile
463 robbat2 1.61 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
464     KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
465     KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
466     KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
467 swegener 1.29
468 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
469     then
470 johnm 1.11 qeerror "Could not detect kernel version."
471 johnm 1.19 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
472     return 1
473 johnm 1.7 fi
474 swegener 1.29
475 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
476 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
477     # This *WILL* break if the user is using localversions, but we assume it was
478     # caught before this if they are.
479 genstef 1.49 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
480     OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
481 johnm 1.4
482     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
483     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
484     if [ -n "${KV_OUT_DIR}" ];
485     then
486 johnm 1.11 qeinfo "Found kernel object directory:"
487     qeinfo " ${KV_OUT_DIR}"
488 swegener 1.29
489 johnm 1.30 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
490 johnm 1.4 fi
491 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
492 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
493 johnm 1.21
494 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
495     if linux_config_exists; then
496     KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
497     KV_LOCAL="${KV_LOCAL//\"/}"
498    
499     # For things like git that can append extra stuff:
500     [ -e ${KV_DIR}/scripts/setlocalversion ] &&
501     linux_chkconfig_builtin LOCALVERSION_AUTO &&
502     KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
503 johnm 1.41 fi
504    
505 johnm 1.1 # And we should set KV_FULL to the full expanded version
506     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
507 johnm 1.21
508 johnm 1.11 qeinfo "Found sources for kernel version:"
509     qeinfo " ${KV_FULL}"
510 johnm 1.21
511 johnm 1.19 return 0
512 johnm 1.1 }
513    
514 dsd 1.56 # @FUNCTION: get_running_version
515     # @DESCRIPTION:
516     # It gets the version of the current running kernel and the result is the same as get_version() if the
517     # function can find the sources.
518 johnm 1.23 get_running_version() {
519     KV_FULL=$(uname -r)
520 johnm 1.1
521 johnm 1.23 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
522     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
523     unset KV_FULL
524     get_version
525     return $?
526     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
527     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
528     unset KV_FULL
529     get_version
530     return $?
531     else
532     KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
533     KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
534     KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
535     KV_PATCH=${KV_PATCH//-*}
536     [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
537     && KV_EXTRA="-${KV_FULL#*-}"
538     fi
539     return 0
540     }
541 johnm 1.1
542    
543     # ebuild check functions
544     # ---------------------------------------
545    
546 dsd 1.56 # @FUNCTION: check_kernel_built
547     # @DESCRIPTION:
548     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
549 johnm 1.1 check_kernel_built() {
550 dsd 1.53 # if we haven't determined the version yet, we need to
551 dsd 1.54 require_configured_kernel
552 dsd 1.53 get_version
553 swegener 1.29
554 johnm 1.16 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
555 johnm 1.1 then
556 johnm 1.16 eerror "These sources have not yet been prepared."
557     eerror "We cannot build against an unprepared tree."
558 johnm 1.1 eerror "To resolve this, please type the following:"
559     eerror
560     eerror "# cd ${KV_DIR}"
561     eerror "# make oldconfig"
562 johnm 1.16 eerror "# make modules_prepare"
563 johnm 1.1 eerror
564     eerror "Then please try merging this module again."
565     die "Kernel sources need compiling first"
566     fi
567     }
568    
569 dsd 1.56 # @FUNCTION: check_modules_supported
570     # @DESCRIPTION:
571     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
572 johnm 1.1 check_modules_supported() {
573     # if we haven't determined the version yet, we need too.
574 dsd 1.53 require_configured_kernel
575     get_version
576 swegener 1.29
577 johnm 1.7 if ! linux_chkconfig_builtin "MODULES"
578 johnm 1.1 then
579     eerror "These sources do not support loading external modules."
580     eerror "to be able to use this module please enable \"Loadable modules support\""
581     eerror "in your kernel, recompile and then try merging this module again."
582 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
583 johnm 1.3 fi
584     }
585    
586 dsd 1.56 # @FUNCTION: check_extra_config
587     # @DESCRIPTION:
588     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
589     # the prefix ~ is not used) doesn't satisfy the directive.
590 johnm 1.3 check_extra_config() {
591 mrness 1.45 local config negate die error reworkmodulenames
592 dsd 1.53 local soft_errors_count=0 hard_errors_count=0 config_required=0
593    
594 dsd 1.55 # if we haven't determined the version yet, we need to
595     get_version
596    
597 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
598     # one is when all of the CONFIG_CHECK options are prefixed with "~".
599     for config in ${CONFIG_CHECK}
600     do
601     if [[ "${config:0:1}" != "~" ]]; then
602     config_required=1
603     break
604     fi
605     done
606    
607     if [[ ${config_required} == 0 ]]; then
608     # In the case where we don't require a .config, we can now bail out
609     # if the user has no .config as there is nothing to do. Otherwise
610     # code later will cause a failure due to missing .config.
611     if ! linux_config_exists; then
612 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
613     ewarn "to absence of any configured kernel sources:"
614     for config in ${CONFIG_CHECK}; do
615     ewarn " - ${config#\~}"
616     done
617     ewarn "You're on your own to make sure they are set if needed."
618 dsd 1.53 return 0
619     fi
620     else
621     require_configured_kernel
622     fi
623 johnm 1.3
624 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
625 maekke 1.58
626 johnm 1.3 for config in ${CONFIG_CHECK}
627     do
628 johnm 1.31 # if we specify any fatal, ensure we honor them
629     die=1
630     error=0
631     negate=0
632     reworkmodulenames=0
633    
634 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
635 mrness 1.45 die=0
636 johnm 1.31 config=${config:1}
637 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
638 mrness 1.45 die=0
639 johnm 1.31 reworkmodulenames=1
640     config=${config:1}
641     fi
642 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
643 mrness 1.45 negate=1
644 johnm 1.44 config=${config:1}
645     fi
646 johnm 1.17
647 johnm 1.31 if [[ ${negate} == 1 ]]; then
648     linux_chkconfig_present ${config} && error=2
649     elif [[ ${reworkmodulenames} == 1 ]]; then
650 mrness 1.45 local temp_config="${config//*:}" i n
651 johnm 1.17 config="${config//:*}"
652 johnm 1.31 if linux_chkconfig_present ${config}; then
653     for i in ${MODULE_NAMES}; do
654 johnm 1.17 n="${i//${temp_config}}"
655 dsd 1.38 [[ -z ${n//\(*} ]] && \
656 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
657 johnm 1.17 done
658 johnm 1.31 error=2
659 johnm 1.17 fi
660 johnm 1.3 else
661 johnm 1.31 linux_chkconfig_present ${config} || error=1
662     fi
663    
664 mrness 1.45 if [[ ${error} > 0 ]]; then
665     local report_func="eerror" local_error
666     local_error="ERROR_${config}"
667     local_error="${!local_error}"
668    
669     if [[ -z "${local_error}" ]]; then
670     # using old, deprecated format.
671     local_error="${config}_ERROR"
672     local_error="${!local_error}"
673     fi
674     if [[ ${die} == 0 && -z "${local_error}" ]]; then
675     #soft errors can be warnings
676     local_error="WARNING_${config}"
677 johnm 1.7 local_error="${!local_error}"
678 mrness 1.45 if [[ -n "${local_error}" ]] ; then
679     report_func="ewarn"
680 johnm 1.44 fi
681 mrness 1.45 fi
682 johnm 1.44
683 mrness 1.45 if [[ -z "${local_error}" ]]; then
684     [[ ${error} == 1 ]] \
685     && local_error="is not set when it should be." \
686     || local_error="should not be set. But it is."
687     local_error="CONFIG_${config}:\t ${local_error}"
688     fi
689     if [[ ${die} == 0 ]]; then
690     ${report_func} " ${local_error}"
691     soft_errors_count=$[soft_errors_count + 1]
692     else
693     ${report_func} " ${local_error}"
694     hard_errors_count=$[hard_errors_count + 1]
695 johnm 1.3 fi
696     fi
697     done
698    
699 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
700 johnm 1.3 eerror "Please check to make sure these options are set correctly."
701 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
702 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
703     eerror "this package again."
704     die "Incorrect kernel configuration options"
705     elif [[ ${soft_errors_count} > 0 ]]; then
706     ewarn "Please check to make sure these options are set correctly."
707     ewarn "Failure to do so may cause unexpected problems."
708     else
709     eend 0
710 johnm 1.1 fi
711     }
712    
713     check_zlibinflate() {
714 dsd 1.53 # if we haven't determined the version yet, we need to
715     require_configured_kernel
716     get_version
717 swegener 1.29
718 johnm 1.1 # although I restructured this code - I really really really dont support it!
719    
720     # bug #27882 - zlib routines are only linked into the kernel
721     # if something compiled into the kernel calls them
722     #
723     # plus, for the cloop module, it appears that there's no way
724     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
725     # is on
726 swegener 1.29
727     local INFLATE
728     local DEFLATE
729 johnm 1.1
730     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
731 swegener 1.29
732 johnm 1.1 ebegin "checking ZLIB_INFLATE"
733 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
734 johnm 1.1 eend $?
735     [ "$?" != 0 ] && die
736 swegener 1.29
737 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
738 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
739 johnm 1.1 eend $?
740     [ "$?" != 0 ] && die
741 swegener 1.29
742 johnm 1.1 local LINENO_START
743     local LINENO_END
744     local SYMBOLS
745     local x
746 swegener 1.29
747 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
748     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
749     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
750     (( LINENO_END = $LINENO_END - 1 ))
751 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
752 johnm 1.1
753     # okay, now we have a list of symbols
754     # we need to check each one in turn, to see whether it is set or not
755     for x in $SYMBOLS ; do
756     if [ "${!x}" = "y" ]; then
757     # we have a winner!
758     einfo "${x} ensures zlib is linked into your kernel - excellent"
759     return 0
760     fi
761     done
762 swegener 1.29
763 johnm 1.1 eerror
764     eerror "This kernel module requires ZLIB library support."
765     eerror "You have enabled zlib support in your kernel, but haven't enabled"
766     eerror "enabled any option that will ensure that zlib is linked into your"
767     eerror "kernel."
768     eerror
769     eerror "Please ensure that you enable at least one of these options:"
770     eerror
771    
772     for x in $SYMBOLS ; do
773     eerror " * $x"
774     done
775    
776     eerror
777     eerror "Please remember to recompile and install your kernel, and reboot"
778     eerror "into your new kernel before attempting to load this kernel module."
779    
780     die "Kernel doesn't include zlib support"
781     }
782 johnm 1.8
783     ################################
784     # Default pkg_setup
785     # Also used when inheriting linux-mod to force a get_version call
786 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
787     # @DESCRIPTION:
788     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
789     # to support the options specified in CONFIG_CHECK (if not null)
790 johnm 1.8 linux-info_pkg_setup() {
791 robbat2 1.62 get_version
792     if [[ $rc -ne 0 ]]; then
793     ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
794     get_running_version
795     fi
796 phreak 1.48
797     if kernel_is 2 4; then
798     if [ "$( gcc-major-version )" -eq "4" ] ; then
799     echo
800     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
801     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
802     echo
803     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
804     ewarn "newer kernel that supports gcc-4."
805     echo
806     ewarn "Also be aware that bugreports about gcc-4 not working"
807     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
808     echo
809     epause 10
810     fi
811     fi
812    
813 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
814 johnm 1.8 }

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