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Revision 1.61 Revision 1.91
1# Copyright 1999-2006 Gentoo Foundation 1# Copyright 1999-2011 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.61 2009/08/30 22:37:06 robbat2 Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.91 2011/12/12 22:01:37 vapier Exp $
4#
5# Original author: John Mylchreest <johnm@gentoo.org>
6# Maintainer: kernel-misc@gentoo.org
7#
8# Please direct your bugs to the current eclass maintainer :)
9 4
10# @ECLASS: linux-info.eclass 5# @ECLASS: linux-info.eclass
11# @MAINTAINER: 6# @MAINTAINER:
12# kernel-misc@gentoo.org 7# kernel-misc@gentoo.org
8# @AUTHOR:
9# Original author: John Mylchreest <johnm@gentoo.org>
13# @BLURB: eclass used for accessing kernel related information 10# @BLURB: eclass used for accessing kernel related information
14# @DESCRIPTION: 11# @DESCRIPTION:
15# This eclass is used as a central eclass for accessing kernel 12# This eclass is used as a central eclass for accessing kernel
16# related information for sources already installed. 13# related information for source or binary already installed.
17# It is vital for linux-mod.eclass to function correctly, and is split 14# It is vital for linux-mod.eclass to function correctly, and is split
18# out so that any ebuild behaviour "templates" are abstracted out 15# out so that any ebuild behaviour "templates" are abstracted out
19# using additional eclasses. 16# using additional eclasses.
17#
18# "kernel config" in this file means:
19# The .config of the currently installed sources is used as the first
20# preference, with a fall-back to bundled config (/proc/config.gz) if available.
20 21
21# A Couple of env vars are available to effect usage of this eclass 22# A Couple of env vars are available to effect usage of this eclass
22# These are as follows: 23# These are as follows:
23 24
24# @ECLASS-VARIABLE: KERNEL_DIR 25# @ECLASS-VARIABLE: KERNEL_DIR
37# prepending it with an exclamation mark (!). 38# prepending it with an exclamation mark (!).
38# 39#
39# e.g.: CONFIG_CHECK="!MTRR" 40# e.g.: CONFIG_CHECK="!MTRR"
40# 41#
41# To simply warn about a missing option, prepend a '~'. 42# To simply warn about a missing option, prepend a '~'.
43# It may be combined with '!'.
44#
45# In general, most checks should be non-fatal. The only time fatal checks should
46# be used is for building kernel modules or cases that a compile will fail
47# without the option.
48#
49# This is to allow usage of binary kernels, and minimal systems without kernel
50# sources.
42 51
43# @ECLASS-VARIABLE: ERROR_<CFG> 52# @ECLASS-VARIABLE: ERROR_<CFG>
44# @DESCRIPTION: 53# @DESCRIPTION:
45# A string containing the error message to display when the check against CONFIG_CHECK 54# A string containing the error message to display when the check against CONFIG_CHECK
46# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK. 55# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
92# And to ensure all the weirdness with crosscompile 101# And to ensure all the weirdness with crosscompile
93inherit toolchain-funcs versionator 102inherit toolchain-funcs versionator
94 103
95EXPORT_FUNCTIONS pkg_setup 104EXPORT_FUNCTIONS pkg_setup
96 105
97DEPEND="kernel_linux? ( virtual/linux-sources )" 106DEPEND=""
98RDEPEND="" 107RDEPEND=""
99 108
100# Overwritable environment Var's 109# Overwritable environment Var's
101# --------------------------------------- 110# ---------------------------------------
102KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 111KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
134 esac 143 esac
135 [ -n "${outputmsg}" ] && ${type} "${outputmsg}" 144 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
136} 145}
137 146
138qeinfo() { qout einfo "${@}" ; } 147qeinfo() { qout einfo "${@}" ; }
148qewarn() { qout ewarn "${@}" ; }
139qeerror() { qout eerror "${@}" ; } 149qeerror() { qout eerror "${@}" ; }
140 150
141# File Functions 151# File Functions
142# --------------------------------------- 152# ---------------------------------------
143 153
178# @DESCRIPTION: 188# @DESCRIPTION:
179# It detects the value of the variable defined in the file configfile. 189# It detects the value of the variable defined in the file configfile.
180# This is done with sed matching an expression only. If the variable is defined, 190# This is done with sed matching an expression only. If the variable is defined,
181# you will run into problems. See getfilevar for those cases. 191# you will run into problems. See getfilevar for those cases.
182getfilevar_noexec() { 192getfilevar_noexec() {
183local ERROR basefname basedname myARCH="${ARCH}" 193 local ERROR basefname basedname mycat myARCH="${ARCH}"
184 ERROR=0 194 ERROR=0
195 mycat='cat'
185 196
186 [ -z "${1}" ] && ERROR=1 197 [ -z "${1}" ] && ERROR=1
187 [ ! -f "${2}" ] && ERROR=1 198 [ ! -f "${2}" ] && ERROR=1
199 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
188 200
189 if [ "${ERROR}" = 1 ] 201 if [ "${ERROR}" = 1 ]
190 then 202 then
191 echo -e "\n" 203 echo -e "\n"
192 eerror "getfilevar_noexec requires 2 variables, with the second a valid file." 204 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
193 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>" 205 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
194 else 206 else
207 ${mycat} "${2}" | \
195 sed -n \ 208 sed -n \
196 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{ 209 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
197 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ; 210 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
198 s,[[:space:]]*\$,,g ; 211 s,[[:space:]]*\$,,g ;
199 p 212 p
200 }" \ 213 }"
201 "${2}"
202 fi 214 fi
203} 215}
204 216
217# @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
218# @INTERNAL
219# @DESCRIPTION:
220# This is only set if one of the linux_config_*exists functions has been called.
221# We use it for a QA warning that the check for a config has not been performed,
222# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
223# config is available at all.
224_LINUX_CONFIG_EXISTS_DONE=
225
226linux_config_qa_check() {
227 local f="$1"
228 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
229 ewarn "QA: You called $f before any linux_config_exists!"
230 ewarn "QA: The return value of $f will NOT guaranteed later!"
231 fi
232}
233
234# @FUNCTION: linux_config_src_exists
235# @RETURN: true or false
236# @DESCRIPTION:
237# It returns true if .config exists in a build directory otherwise false
238linux_config_src_exists() {
239 export _LINUX_CONFIG_EXISTS_DONE=1
240 [ -s "${KV_OUT_DIR}/.config" ]
241}
242
243# @FUNCTION: linux_config_bin_exists
244# @RETURN: true or false
245# @DESCRIPTION:
246# It returns true if .config exists in /proc, otherwise false
247linux_config_bin_exists() {
248 export _LINUX_CONFIG_EXISTS_DONE=1
249 [ -s "/proc/config.gz" ]
250}
205 251
206# @FUNCTION: linux_config_exists 252# @FUNCTION: linux_config_exists
207# @RETURN: true or false 253# @RETURN: true or false
208# @DESCRIPTION: 254# @DESCRIPTION:
209# It returns true if .config exists otherwise false 255# It returns true if .config exists otherwise false
256#
257# This function MUST be checked before using any of the linux_chkconfig_*
258# functions.
210linux_config_exists() { 259linux_config_exists() {
211 [ -s "${KV_OUT_DIR}/.config" ] 260 linux_config_src_exists || linux_config_bin_exists
212} 261}
213 262
214# @FUNCTION: require_configured_kernel 263# @FUNCTION: require_configured_kernel
215# @DESCRIPTION: 264# @DESCRIPTION:
216# This function verifies that the current kernel is configured (it checks against the existence of .config) 265# This function verifies that the current kernel is configured (it checks against the existence of .config)
217# otherwise it dies. 266# otherwise it dies.
218require_configured_kernel() { 267require_configured_kernel() {
219 if ! linux_config_exists; then 268 if ! linux_config_src_exists; then
220 qeerror "Could not find a usable .config in the kernel source directory." 269 qeerror "Could not find a usable .config in the kernel source directory."
221 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources." 270 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
222 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that" 271 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
223 qeerror "it points to the necessary object directory so that it might find .config." 272 qeerror "it points to the necessary object directory so that it might find .config."
224 die "Kernel not configured; no .config found in ${KV_OUT_DIR}" 273 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
228# @FUNCTION: linux_chkconfig_present 277# @FUNCTION: linux_chkconfig_present
229# @USAGE: option 278# @USAGE: option
230# @RETURN: true or false 279# @RETURN: true or false
231# @DESCRIPTION: 280# @DESCRIPTION:
232# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config 281# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
282# If linux_config_exists returns false, the results of this are UNDEFINED. You
283# MUST call linux_config_exists first.
233linux_chkconfig_present() { 284linux_chkconfig_present() {
285 linux_config_qa_check linux_chkconfig_present
234local RESULT 286 local RESULT
235 require_configured_kernel 287 local config
288 config="${KV_OUT_DIR}/.config"
289 [ ! -f "${config}" ] && config="/proc/config.gz"
236 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)" 290 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
237 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 291 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
238} 292}
239 293
240# @FUNCTION: linux_chkconfig_module 294# @FUNCTION: linux_chkconfig_module
241# @USAGE: option 295# @USAGE: option
242# @RETURN: true or false 296# @RETURN: true or false
243# @DESCRIPTION: 297# @DESCRIPTION:
244# It checks that CONFIG_<option>=m is present in the current kernel .config 298# It checks that CONFIG_<option>=m is present in the current kernel .config
299# If linux_config_exists returns false, the results of this are UNDEFINED. You
300# MUST call linux_config_exists first.
245linux_chkconfig_module() { 301linux_chkconfig_module() {
302 linux_config_qa_check linux_chkconfig_module
246local RESULT 303 local RESULT
247 require_configured_kernel 304 local config
305 config="${KV_OUT_DIR}/.config"
306 [ ! -f "${config}" ] && config="/proc/config.gz"
248 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)" 307 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
249 [ "${RESULT}" = "m" ] && return 0 || return 1 308 [ "${RESULT}" = "m" ] && return 0 || return 1
250} 309}
251 310
252# @FUNCTION: linux_chkconfig_builtin 311# @FUNCTION: linux_chkconfig_builtin
253# @USAGE: option 312# @USAGE: option
254# @RETURN: true or false 313# @RETURN: true or false
255# @DESCRIPTION: 314# @DESCRIPTION:
256# It checks that CONFIG_<option>=y is present in the current kernel .config 315# It checks that CONFIG_<option>=y is present in the current kernel .config
316# If linux_config_exists returns false, the results of this are UNDEFINED. You
317# MUST call linux_config_exists first.
257linux_chkconfig_builtin() { 318linux_chkconfig_builtin() {
319 linux_config_qa_check linux_chkconfig_builtin
258local RESULT 320 local RESULT
259 require_configured_kernel 321 local config
322 config="${KV_OUT_DIR}/.config"
323 [ ! -f "${config}" ] && config="/proc/config.gz"
260 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)" 324 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
261 [ "${RESULT}" = "y" ] && return 0 || return 1 325 [ "${RESULT}" = "y" ] && return 0 || return 1
262} 326}
263 327
264# @FUNCTION: linux_chkconfig_string 328# @FUNCTION: linux_chkconfig_string
265# @USAGE: option 329# @USAGE: option
266# @RETURN: CONFIG_<option> 330# @RETURN: CONFIG_<option>
267# @DESCRIPTION: 331# @DESCRIPTION:
268# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel). 332# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
333# If linux_config_exists returns false, the results of this are UNDEFINED. You
334# MUST call linux_config_exists first.
269linux_chkconfig_string() { 335linux_chkconfig_string() {
270 require_configured_kernel 336 linux_config_qa_check linux_chkconfig_string
337 local config
338 config="${KV_OUT_DIR}/.config"
339 [ ! -f "${config}" ] && config="/proc/config.gz"
271 getfilevar_noexec "CONFIG_${1}" "${KV_OUT_DIR}/.config" 340 getfilevar_noexec "CONFIG_${1}" "${config}"
272} 341}
273 342
274# Versioning Functions 343# Versioning Functions
275# --------------------------------------- 344# ---------------------------------------
276 345
288# kernel_is 2 6 returns true 357# kernel_is 2 6 returns true
289# kernel_is 2 6 8 returns false 358# kernel_is 2 6 8 returns false
290# kernel_is 2 6 9 returns true 359# kernel_is 2 6 9 returns true
291# @CODE 360# @CODE
292 361
293# got the jist yet? 362# Note: duplicated in kernel-2.eclass
294
295kernel_is() { 363kernel_is() {
296 # if we haven't determined the version yet, we need to. 364 # if we haven't determined the version yet, we need to.
297 get_version 365 linux-info_get_any_version
366
367 # Now we can continue
298 local operator test value x=0 y=0 z=0 368 local operator test value
299 369
300 case ${1} in 370 case ${1#-} in
301 lt) operator="-lt"; shift;; 371 lt) operator="-lt"; shift;;
302 gt) operator="-gt"; shift;; 372 gt) operator="-gt"; shift;;
303 le) operator="-le"; shift;; 373 le) operator="-le"; shift;;
304 ge) operator="-ge"; shift;; 374 ge) operator="-ge"; shift;;
305 eq) operator="-eq"; shift;; 375 eq) operator="-eq"; shift;;
306 *) operator="-eq";; 376 *) operator="-eq";;
307 esac 377 esac
308
309 for x in ${@}; do
310 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
311 value="${value}${x}"
312 z=$((${z} + 1))
313
314 case ${z} in
315 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
316 test="${test}${KV_MAJOR}";;
317 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
318 test="${test}${KV_MINOR}";;
319 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
320 test="${test}${KV_PATCH}";;
321 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 378 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
322 esac 379
323 done 380 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
324 381 : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
325 [ ${test} ${operator} ${value} ] && return 0 || return 1 382 [ ${test} ${operator} ${value} ]
326} 383}
327 384
328get_localversion() { 385get_localversion() {
329 local lv_list i x 386 local lv_list i x
330 387
338 done 395 done
339 x=${x/ /} 396 x=${x/ /}
340 echo ${x} 397 echo ${x}
341} 398}
342 399
400# Check if the Makefile is valid for direct parsing.
401# Check status results:
402# - PASS, use 'getfilevar' to extract values
403# - FAIL, use 'getfilevar_noexec' to extract values
404# The check may fail if:
405# - make is not present
406# - corruption exists in the kernel makefile
407get_makefile_extract_function() {
408 local a='' b='' mkfunc='getfilevar'
409 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
410 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
411 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
412 echo "${mkfunc}"
413}
414
415# internal variable, so we know to only print the warning once
416get_version_warning_done=
417
343# @FUNCTION: get_version 418# @FUNCTION: get_version
344# @DESCRIPTION: 419# @DESCRIPTION:
345# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable 420# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
346# (if KV_FULL is already set it does nothing). 421# (if KV_FULL is already set it does nothing).
347# 422#
349# 424#
350# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid 425# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
351# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the 426# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
352# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build). 427# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
353get_version() { 428get_version() {
354 local kbuild_output 429 local kbuild_output mkfunc tmplocal
355 430
356 # no need to execute this twice assuming KV_FULL is populated. 431 # no need to execute this twice assuming KV_FULL is populated.
357 # we can force by unsetting KV_FULL 432 # we can force by unsetting KV_FULL
358 [ -n "${KV_FULL}" ] && return 0 433 [ -n "${KV_FULL}" ] && return 0
359 434
360 # if we dont know KV_FULL, then we need too. 435 # if we dont know KV_FULL, then we need too.
361 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 436 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
362 unset KV_DIR 437 unset KV_DIR
363 438
364 # KV_DIR will contain the full path to the sources directory we should use 439 # KV_DIR will contain the full path to the sources directory we should use
440 [ -z "${get_version_warning_done}" ] && \
365 qeinfo "Determining the location of the kernel source code" 441 qeinfo "Determining the location of the kernel source code"
366 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 442 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
367 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 443 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
368 444
369 if [ -z "${KV_DIR}" ] 445 if [ -z "${KV_DIR}" ]
370 then 446 then
447 if [ -z "${get_version_warning_done}" ]; then
448 get_version_warning_done=1
371 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 449 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
372 qeinfo "This package requires Linux sources." 450 #qeinfo "This package requires Linux sources."
373 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 451 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
374 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 452 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
375 qeinfo "(or the kernel you wish to build against)." 453 qeinfo "(or the kernel you wish to build against)."
376 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 454 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
377 else 455 else
378 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 456 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
457 fi
379 fi 458 fi
380 return 1 459 return 1
381 fi 460 fi
382 461
462 if [ -z "${get_version_warning_done}" ]; then
383 qeinfo "Found kernel source directory:" 463 qeinfo "Found kernel source directory:"
384 qeinfo " ${KV_DIR}" 464 qeinfo " ${KV_DIR}"
465 fi
385 466
386 if [ ! -s "${KV_DIR}/Makefile" ] 467 if [ ! -s "${KV_DIR}/Makefile" ]
387 then 468 then
469 if [ -z "${get_version_warning_done}" ]; then
470 get_version_warning_done=1
388 qeerror "Could not find a Makefile in the kernel source directory." 471 qeerror "Could not find a Makefile in the kernel source directory."
389 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 472 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
473 fi
390 return 1 474 return 1
391 fi 475 fi
392 476
393 # OK so now we know our sources directory, but they might be using 477 # OK so now we know our sources directory, but they might be using
394 # KBUILD_OUTPUT, and we need this for .config and localversions-* 478 # KBUILD_OUTPUT, and we need this for .config and localversions-*
395 # so we better find it eh? 479 # so we better find it eh?
396 # do we pass KBUILD_OUTPUT on the CLI? 480 # do we pass KBUILD_OUTPUT on the CLI?
397 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 481 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
398 482
483 # keep track of it
484 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
485
486 # Decide the function used to extract makefile variables.
487 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
488
399 # And if we didn't pass it, we can take a nosey in the Makefile 489 # And if we didn't pass it, we can take a nosey in the Makefile
400 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)" 490 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
401 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 491 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
402 492
403 # And contrary to existing functions I feel we shouldn't trust the 493 # And contrary to existing functions I feel we shouldn't trust the
404 # directory name to find version information as this seems insane. 494 # directory name to find version information as this seems insane.
405 # so we parse ${KV_DIR}/Makefile 495 # so we parse ${KERNEL_MAKEFILE}
406 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)" 496 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
407 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)" 497 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
408 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)" 498 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
409 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)" 499 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
410 500
411 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 501 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
412 then 502 then
503 if [ -z "${get_version_warning_done}" ]; then
504 get_version_warning_done=1
413 qeerror "Could not detect kernel version." 505 qeerror "Could not detect kernel version."
414 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 506 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
507 fi
415 return 1 508 return 1
416 fi 509 fi
417 510
418 # and in newer versions we can also pull LOCALVERSION if it is set. 511 # and in newer versions we can also pull LOCALVERSION if it is set.
419 # but before we do this, we need to find if we use a different object directory. 512 # but before we do this, we need to find if we use a different object directory.
420 # This *WILL* break if the user is using localversions, but we assume it was 513 # This *WILL* break if the user is using localversions, but we assume it was
421 # caught before this if they are. 514 # caught before this if they are.
422 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
423 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}" 515 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
424 516
425 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 517 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
426 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 518 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
427 if [ -n "${KV_OUT_DIR}" ]; 519 if [ -n "${KV_OUT_DIR}" ];
428 then 520 then
429 qeinfo "Found kernel object directory:" 521 qeinfo "Found kernel object directory:"
430 qeinfo " ${KV_OUT_DIR}" 522 qeinfo " ${KV_OUT_DIR}"
431
432 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
433 fi 523 fi
434 # and if we STILL have not got it, then we better just set it to KV_DIR 524 # and if we STILL have not got it, then we better just set it to KV_DIR
435 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 525 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
436 526
437 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 527 # Grab the kernel release from the output directory.
438 if linux_config_exists; then 528 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
439 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 529 # this function.
440 KV_LOCAL="${KV_LOCAL//\"/}" 530 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
531 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
532 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
533 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
534 else
535 KV_LOCAL=
536 fi
441 537
442 # For things like git that can append extra stuff: 538 # KV_LOCAL currently contains the full release; discard the first bits.
443 [ -e ${KV_DIR}/scripts/setlocalversion ] && 539 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
444 linux_chkconfig_builtin LOCALVERSION_AUTO && 540
445 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 541 # If the updated local version was not changed, the tree is not prepared.
542 # Clear out KV_LOCAL in that case.
543 # TODO: this does not detect a change in the localversion part between
544 # kernel.release and the value that would be generated.
545 if [ "$KV_LOCAL" = "$tmplocal" ]; then
546 KV_LOCAL=
547 else
548 KV_LOCAL=$tmplocal
446 fi 549 fi
447 550
448 # And we should set KV_FULL to the full expanded version 551 # And we should set KV_FULL to the full expanded version
449 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 552 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
450 553
459# It gets the version of the current running kernel and the result is the same as get_version() if the 562# It gets the version of the current running kernel and the result is the same as get_version() if the
460# function can find the sources. 563# function can find the sources.
461get_running_version() { 564get_running_version() {
462 KV_FULL=$(uname -r) 565 KV_FULL=$(uname -r)
463 566
567 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
568 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
569 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
570 unset KV_FULL
571 get_version
572 return $?
464 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 573 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
465 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 574 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
466 unset KV_FULL 575 unset KV_FULL
467 get_version 576 get_version
468 return $? 577 return $?
469 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then 578 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
472 get_version 581 get_version
473 return $? 582 return $?
474 else 583 else
475 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 584 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
476 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 585 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
477 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 586 KV_PATCH=$(get_version_component_range 3 ${KV_FULL})
478 KV_PATCH=${KV_PATCH//-*} 587 KV_PATCH=${KV_PATCH//-*}
479 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 588 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}}"
480 && KV_EXTRA="-${KV_FULL#*-}"
481 fi 589 fi
482 return 0 590 return 0
591}
592
593# This next function is named with the eclass prefix to avoid conflicts with
594# some old versionator-like eclass functions.
595
596# @FUNCTION: linux-info_get_any_version
597# @DESCRIPTION:
598# This attempts to find the version of the sources, and otherwise falls back to
599# the version of the running kernel.
600linux-info_get_any_version() {
601 get_version
602 if [[ $? -ne 0 ]]; then
603 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
604 get_running_version
605 fi
483} 606}
484 607
485 608
486# ebuild check functions 609# ebuild check functions
487# --------------------------------------- 610# ---------------------------------------
531# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e. 654# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
532# the prefix ~ is not used) doesn't satisfy the directive. 655# the prefix ~ is not used) doesn't satisfy the directive.
533check_extra_config() { 656check_extra_config() {
534 local config negate die error reworkmodulenames 657 local config negate die error reworkmodulenames
535 local soft_errors_count=0 hard_errors_count=0 config_required=0 658 local soft_errors_count=0 hard_errors_count=0 config_required=0
659 # store the value of the QA check, because otherwise we won't catch usages
660 # after if check_extra_config is called AND other direct calls are done
661 # later.
662 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
536 663
537 # if we haven't determined the version yet, we need to 664 # if we haven't determined the version yet, we need to
538 get_version 665 linux-info_get_any_version
539 666
540 # Determine if we really need a .config. The only time when we don't need 667 # Determine if we really need a .config. The only time when we don't need
541 # one is when all of the CONFIG_CHECK options are prefixed with "~". 668 # one is when all of the CONFIG_CHECK options are prefixed with "~".
542 for config in ${CONFIG_CHECK} 669 for config in ${CONFIG_CHECK}
543 do 670 do
551 # In the case where we don't require a .config, we can now bail out 678 # In the case where we don't require a .config, we can now bail out
552 # if the user has no .config as there is nothing to do. Otherwise 679 # if the user has no .config as there is nothing to do. Otherwise
553 # code later will cause a failure due to missing .config. 680 # code later will cause a failure due to missing .config.
554 if ! linux_config_exists; then 681 if ! linux_config_exists; then
555 ewarn "Unable to check for the following kernel config options due" 682 ewarn "Unable to check for the following kernel config options due"
556 ewarn "to absence of any configured kernel sources:" 683 ewarn "to absence of any configured kernel sources or compiled"
684 ewarn "config:"
557 for config in ${CONFIG_CHECK}; do 685 for config in ${CONFIG_CHECK}; do
686 local_error="ERROR_${config#\~}"
687 msg="${!local_error}"
688 if [[ "x${msg}" == "x" ]]; then
689 local_error="WARNING_${config#\~}"
690 msg="${!local_error}"
691 fi
558 ewarn " - ${config#\~}" 692 ewarn " - ${config#\~}${msg:+ - }${msg}"
559 done 693 done
560 ewarn "You're on your own to make sure they are set if needed." 694 ewarn "You're on your own to make sure they are set if needed."
695 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
561 return 0 696 return 0
562 fi 697 fi
563 else 698 else
564 require_configured_kernel 699 require_configured_kernel
565 fi 700 fi
642 if [[ ${hard_errors_count} > 0 ]]; then 777 if [[ ${hard_errors_count} > 0 ]]; then
643 eerror "Please check to make sure these options are set correctly." 778 eerror "Please check to make sure these options are set correctly."
644 eerror "Failure to do so may cause unexpected problems." 779 eerror "Failure to do so may cause unexpected problems."
645 eerror "Once you have satisfied these options, please try merging" 780 eerror "Once you have satisfied these options, please try merging"
646 eerror "this package again." 781 eerror "this package again."
782 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
647 die "Incorrect kernel configuration options" 783 die "Incorrect kernel configuration options"
648 elif [[ ${soft_errors_count} > 0 ]]; then 784 elif [[ ${soft_errors_count} > 0 ]]; then
649 ewarn "Please check to make sure these options are set correctly." 785 ewarn "Please check to make sure these options are set correctly."
650 ewarn "Failure to do so may cause unexpected problems." 786 ewarn "Failure to do so may cause unexpected problems."
651 else 787 else
652 eend 0 788 eend 0
653 fi 789 fi
790 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
654} 791}
655 792
656check_zlibinflate() { 793check_zlibinflate() {
657 # if we haven't determined the version yet, we need to 794 # if we haven't determined the version yet, we need to
658 require_configured_kernel 795 require_configured_kernel
729# @FUNCTION: linux-info_pkg_setup 866# @FUNCTION: linux-info_pkg_setup
730# @DESCRIPTION: 867# @DESCRIPTION:
731# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured 868# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
732# to support the options specified in CONFIG_CHECK (if not null) 869# to support the options specified in CONFIG_CHECK (if not null)
733linux-info_pkg_setup() { 870linux-info_pkg_setup() {
734 get_version || die "Unable to calculate Linux Kernel version" 871 linux-info_get_any_version
735 872
736 if kernel_is 2 4; then 873 if kernel_is 2 4; then
737 if [ "$( gcc-major-version )" -eq "4" ] ; then 874 if [ "$( gcc-major-version )" -eq "4" ] ; then
738 echo 875 echo
739 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with" 876 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"

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