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1# Copyright 1999-2006 Gentoo Foundation 1# Copyright 1999-2013 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 1.62 2009/09/06 22:54:58 robbat2 Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.96 2013/01/24 20:47:23 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 source or binary 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
19# using additional eclasses. 16# using additional eclasses.
20# 17#
21# "kernel config" in this file means: 18# "kernel config" in this file means:
22# The .config of the currently installed sources is used as the first 19# 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. 20# preference, with a fall-back to bundled config (/proc/config.gz) if available.
21#
22# Before using any of the config-handling functions in this eclass, you must
23# ensure that one of the following functions has been called (in order of
24# preference), otherwise you will get bugs like #364041):
25# linux-info_pkg_setup
26# linux-info_get_any_version
27# get_version
28# get_running_version
24 29
25# A Couple of env vars are available to effect usage of this eclass 30# A Couple of env vars are available to effect usage of this eclass
26# These are as follows: 31# These are as follows:
27 32
28# @ECLASS-VARIABLE: KERNEL_DIR 33# @ECLASS-VARIABLE: KERNEL_DIR
40# You can also check that an option doesn't exist by 45# You can also check that an option doesn't exist by
41# prepending it with an exclamation mark (!). 46# prepending it with an exclamation mark (!).
42# 47#
43# e.g.: CONFIG_CHECK="!MTRR" 48# e.g.: CONFIG_CHECK="!MTRR"
44# 49#
45# To simply warn about a missing option, prepend a '~'. 50# To simply warn about a missing option, prepend a '~'.
46# It may be combined with '!'. 51# It may be combined with '!'.
47# 52#
48# In general, most checks should be non-fatal. The only time fatal checks should 53# 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 54# be used is for building kernel modules or cases that a compile will fail
50# without the option. 55# without the option.
99# @ECLASS-VARIABLE: KV_OUT_DIR 104# @ECLASS-VARIABLE: KV_OUT_DIR
100# @DESCRIPTION: 105# @DESCRIPTION:
101# A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless 106# 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. 107# KBUILD_OUTPUT is used. This should be used for referencing .config.
103 108
104# @ECLASS-VARIABLE: I_KNOW_WHAT_I_AM_DOING
105# @DESCRIPTION:
106# Temporary variable for the migration to making linux-info non-fatal.
107
108# And to ensure all the weirdness with crosscompile 109# And to ensure all the weirdness with crosscompile
109inherit toolchain-funcs versionator 110inherit toolchain-funcs versionator
110 111
111EXPORT_FUNCTIONS pkg_setup 112EXPORT_FUNCTIONS pkg_setup
112 113
113DEPEND="kernel_linux? ( virtual/linux-sources )" 114DEPEND=""
114RDEPEND="" 115RDEPEND=""
115 116
116# Overwritable environment Var's 117# Overwritable environment Var's
117# --------------------------------------- 118# ---------------------------------------
118KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 119KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
150 esac 151 esac
151 [ -n "${outputmsg}" ] && ${type} "${outputmsg}" 152 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
152} 153}
153 154
154qeinfo() { qout einfo "${@}" ; } 155qeinfo() { qout einfo "${@}" ; }
156qewarn() { qout ewarn "${@}" ; }
155qeerror() { qout eerror "${@}" ; } 157qeerror() { qout eerror "${@}" ; }
156 158
157# File Functions 159# File Functions
158# --------------------------------------- 160# ---------------------------------------
159 161
163# @DESCRIPTION: 165# @DESCRIPTION:
164# It detects the value of the variable defined in the file configfile. This is 166# It detects the value of the variable defined in the file configfile. This is
165# done by including the configfile, and printing the variable with Make. 167# done by including the configfile, and printing the variable with Make.
166# It WILL break if your makefile has missing dependencies! 168# It WILL break if your makefile has missing dependencies!
167getfilevar() { 169getfilevar() {
168local ERROR basefname basedname myARCH="${ARCH}" 170 local ERROR basefname basedname myARCH="${ARCH}"
169 ERROR=0 171 ERROR=0
170 172
171 [ -z "${1}" ] && ERROR=1 173 [ -z "${1}" ] && ERROR=1
172 [ ! -f "${2}" ] && ERROR=1 174 [ ! -f "${2}" ] && ERROR=1
173 175
194# @DESCRIPTION: 196# @DESCRIPTION:
195# It detects the value of the variable defined in the file configfile. 197# It detects the value of the variable defined in the file configfile.
196# This is done with sed matching an expression only. If the variable is defined, 198# This is done with sed matching an expression only. If the variable is defined,
197# you will run into problems. See getfilevar for those cases. 199# you will run into problems. See getfilevar for those cases.
198getfilevar_noexec() { 200getfilevar_noexec() {
199 local ERROR basefname basedname mycat myARCH="${ARCH}" 201 local ERROR basefname basedname mycat myARCH="${ARCH}"
200 ERROR=0 202 ERROR=0
201 mycat='cat' 203 mycat='cat'
202 204
203 [ -z "${1}" ] && ERROR=1 205 [ -z "${1}" ] && ERROR=1
204 [ ! -f "${2}" ] && ERROR=1 206 [ ! -f "${2}" ] && ERROR=1
205 [ "${2#.gz}" != "${2}" ] && mycat='zcat' 207 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
206 208
207 if [ "${ERROR}" = 1 ] 209 if [ "${ERROR}" = 1 ]
208 then 210 then
209 echo -e "\n" 211 echo -e "\n"
210 eerror "getfilevar_noexec requires 2 variables, with the second a valid file." 212 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
211 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>" 213 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
212 else 214 else
213 ${mycat} "${2}" | \ 215 ${mycat} "${2}" | \
214 sed -n \ 216 sed -n \
215 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{ 217 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
216 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ; 218 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
217 s,[[:space:]]*\$,,g ; 219 s,[[:space:]]*\$,,g ;
218 p 220 p
219 }" 221 }"
220 fi 222 fi
221} 223}
222 224
225# @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
226# @INTERNAL
227# @DESCRIPTION:
228# This is only set if one of the linux_config_*exists functions has been called.
229# We use it for a QA warning that the check for a config has not been performed,
230# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
231# config is available at all.
232_LINUX_CONFIG_EXISTS_DONE=
233
234linux_config_qa_check() {
235 local f="$1"
236 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
237 ewarn "QA: You called $f before any linux_config_exists!"
238 ewarn "QA: The return value of $f will NOT guaranteed later!"
239 fi
240}
223 241
224# @FUNCTION: linux_config_src_exists 242# @FUNCTION: linux_config_src_exists
225# @RETURN: true or false 243# @RETURN: true or false
226# @DESCRIPTION: 244# @DESCRIPTION:
227# It returns true if .config exists in a build directory otherwise false 245# It returns true if .config exists in a build directory otherwise false
228linux_config_src_exists() { 246linux_config_src_exists() {
247 export _LINUX_CONFIG_EXISTS_DONE=1
229 [ -s "${KV_OUT_DIR}/.config" ] 248 [ -s "${KV_OUT_DIR}/.config" ]
230} 249}
231 250
232# @FUNCTION: linux_config_bin_exists 251# @FUNCTION: linux_config_bin_exists
233# @RETURN: true or false 252# @RETURN: true or false
234# @DESCRIPTION: 253# @DESCRIPTION:
235# It returns true if .config exists in /proc, otherwise false 254# It returns true if .config exists in /proc, otherwise false
236linux_config_bin_exists() { 255linux_config_bin_exists() {
256 export _LINUX_CONFIG_EXISTS_DONE=1
237 [ -s "/proc/config.gz" ] 257 [ -s "/proc/config.gz" ]
238} 258}
239 259
240# @FUNCTION: linux_config_exists 260# @FUNCTION: linux_config_exists
241# @RETURN: true or false 261# @RETURN: true or false
268# @DESCRIPTION: 288# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config 289# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You 290# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first. 291# MUST call linux_config_exists first.
272linux_chkconfig_present() { 292linux_chkconfig_present() {
273local RESULT 293 linux_config_qa_check linux_chkconfig_present
274 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
275 local config 294 local RESULT config
276 config="${KV_OUT_DIR}/.config" 295 config="${KV_OUT_DIR}/.config"
277 [ ! -f "${config}" ] && config="/proc/config.gz" 296 [ ! -f "${config}" ] && config="/proc/config.gz"
278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")" 297 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 298 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
280} 299}
285# @DESCRIPTION: 304# @DESCRIPTION:
286# It checks that CONFIG_<option>=m is present in the current kernel .config 305# It checks that CONFIG_<option>=m is present in the current kernel .config
287# If linux_config_exists returns false, the results of this are UNDEFINED. You 306# If linux_config_exists returns false, the results of this are UNDEFINED. You
288# MUST call linux_config_exists first. 307# MUST call linux_config_exists first.
289linux_chkconfig_module() { 308linux_chkconfig_module() {
290local RESULT 309 linux_config_qa_check linux_chkconfig_module
291 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
292 local config 310 local RESULT config
293 config="${KV_OUT_DIR}/.config" 311 config="${KV_OUT_DIR}/.config"
294 [ ! -f "${config}" ] && config="/proc/config.gz" 312 [ ! -f "${config}" ] && config="/proc/config.gz"
295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")" 313 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
296 [ "${RESULT}" = "m" ] && return 0 || return 1 314 [ "${RESULT}" = "m" ] && return 0 || return 1
297} 315}
302# @DESCRIPTION: 320# @DESCRIPTION:
303# It checks that CONFIG_<option>=y is present in the current kernel .config 321# It checks that CONFIG_<option>=y is present in the current kernel .config
304# If linux_config_exists returns false, the results of this are UNDEFINED. You 322# If linux_config_exists returns false, the results of this are UNDEFINED. You
305# MUST call linux_config_exists first. 323# MUST call linux_config_exists first.
306linux_chkconfig_builtin() { 324linux_chkconfig_builtin() {
307local RESULT 325 linux_config_qa_check linux_chkconfig_builtin
308 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
309 local config 326 local RESULT config
310 config="${KV_OUT_DIR}/.config" 327 config="${KV_OUT_DIR}/.config"
311 [ ! -f "${config}" ] && config="/proc/config.gz" 328 [ ! -f "${config}" ] && config="/proc/config.gz"
312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")" 329 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
313 [ "${RESULT}" = "y" ] && return 0 || return 1 330 [ "${RESULT}" = "y" ] && return 0 || return 1
314} 331}
319# @DESCRIPTION: 336# @DESCRIPTION:
320# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel). 337# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
321# If linux_config_exists returns false, the results of this are UNDEFINED. You 338# If linux_config_exists returns false, the results of this are UNDEFINED. You
322# MUST call linux_config_exists first. 339# MUST call linux_config_exists first.
323linux_chkconfig_string() { 340linux_chkconfig_string() {
324 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 341 linux_config_qa_check linux_chkconfig_string
325 local config 342 local config
326 config="${KV_OUT_DIR}/.config" 343 config="${KV_OUT_DIR}/.config"
327 [ ! -f "${config}" ] && config="/proc/config.gz" 344 [ ! -f "${config}" ] && config="/proc/config.gz"
328 getfilevar_noexec "CONFIG_${1}" "${config}" 345 getfilevar_noexec "CONFIG_${1}" "${config}"
329} 346}
345# kernel_is 2 6 returns true 362# kernel_is 2 6 returns true
346# kernel_is 2 6 8 returns false 363# kernel_is 2 6 8 returns false
347# kernel_is 2 6 9 returns true 364# kernel_is 2 6 9 returns true
348# @CODE 365# @CODE
349 366
350# got the jist yet? 367# Note: duplicated in kernel-2.eclass
351
352kernel_is() { 368kernel_is() {
353 # if we haven't determined the version yet, we need to. 369 # if we haven't determined the version yet, we need to.
354 get_version 370 linux-info_get_any_version
371
372 # Now we can continue
355 local operator test value x=0 y=0 z=0 373 local operator test value
356 374
357 case ${1} in 375 case ${1#-} in
358 lt) operator="-lt"; shift;; 376 lt) operator="-lt"; shift;;
359 gt) operator="-gt"; shift;; 377 gt) operator="-gt"; shift;;
360 le) operator="-le"; shift;; 378 le) operator="-le"; shift;;
361 ge) operator="-ge"; shift;; 379 ge) operator="-ge"; shift;;
362 eq) operator="-eq"; shift;; 380 eq) operator="-eq"; shift;;
363 *) operator="-eq";; 381 *) operator="-eq";;
364 esac 382 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.";; 383 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
379 esac 384
380 done 385 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
381 386 : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
382 [ ${test} ${operator} ${value} ] && return 0 || return 1 387 [ ${test} ${operator} ${value} ]
383} 388}
384 389
385get_localversion() { 390get_localversion() {
386 local lv_list i x 391 local lv_list i x
387 392
395 done 400 done
396 x=${x/ /} 401 x=${x/ /}
397 echo ${x} 402 echo ${x}
398} 403}
399 404
405# Check if the Makefile is valid for direct parsing.
406# Check status results:
407# - PASS, use 'getfilevar' to extract values
408# - FAIL, use 'getfilevar_noexec' to extract values
409# The check may fail if:
410# - make is not present
411# - corruption exists in the kernel makefile
412get_makefile_extract_function() {
413 local a='' b='' mkfunc='getfilevar'
414 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
415 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
416 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
417 echo "${mkfunc}"
418}
419
420# internal variable, so we know to only print the warning once
421get_version_warning_done=
422
400# @FUNCTION: get_version 423# @FUNCTION: get_version
401# @DESCRIPTION: 424# @DESCRIPTION:
402# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable 425# 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). 426# (if KV_FULL is already set it does nothing).
404# 427#
406# 429#
407# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid 430# 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 431# 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). 432# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
410get_version() { 433get_version() {
411 local kbuild_output 434 local kbuild_output mkfunc tmplocal
412 435
413 # no need to execute this twice assuming KV_FULL is populated. 436 # no need to execute this twice assuming KV_FULL is populated.
414 # we can force by unsetting KV_FULL 437 # we can force by unsetting KV_FULL
415 [ -n "${KV_FULL}" ] && return 0 438 [ -n "${KV_FULL}" ] && return 0
416 439
417 # if we dont know KV_FULL, then we need too. 440 # 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 441 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
419 unset KV_DIR 442 unset KV_DIR
420 443
421 # KV_DIR will contain the full path to the sources directory we should use 444 # KV_DIR will contain the full path to the sources directory we should use
445 [ -z "${get_version_warning_done}" ] && \
422 qeinfo "Determining the location of the kernel source code" 446 qeinfo "Determining the location of the kernel source code"
423 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 447 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
424 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 448 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
425 449
426 if [ -z "${KV_DIR}" ] 450 if [ -z "${KV_DIR}" ]
427 then 451 then
452 if [ -z "${get_version_warning_done}" ]; then
453 get_version_warning_done=1
428 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 454 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
429 qeinfo "This package requires Linux sources." 455 #qeinfo "This package requires Linux sources."
430 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 456 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
431 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 457 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
432 qeinfo "(or the kernel you wish to build against)." 458 qeinfo "(or the kernel you wish to build against)."
433 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 459 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
434 else 460 else
435 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 461 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
462 fi
436 fi 463 fi
437 return 1 464 return 1
438 fi 465 fi
439 466
467 if [ -z "${get_version_warning_done}" ]; then
440 qeinfo "Found kernel source directory:" 468 qeinfo "Found kernel source directory:"
441 qeinfo " ${KV_DIR}" 469 qeinfo " ${KV_DIR}"
470 fi
442 471
443 if [ ! -s "${KV_DIR}/Makefile" ] 472 if [ ! -s "${KV_DIR}/Makefile" ]
444 then 473 then
474 if [ -z "${get_version_warning_done}" ]; then
475 get_version_warning_done=1
445 qeerror "Could not find a Makefile in the kernel source directory." 476 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" 477 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
478 fi
447 return 1 479 return 1
448 fi 480 fi
449 481
450 # OK so now we know our sources directory, but they might be using 482 # OK so now we know our sources directory, but they might be using
451 # KBUILD_OUTPUT, and we need this for .config and localversions-* 483 # KBUILD_OUTPUT, and we need this for .config and localversions-*
452 # so we better find it eh? 484 # so we better find it eh?
453 # do we pass KBUILD_OUTPUT on the CLI? 485 # do we pass KBUILD_OUTPUT on the CLI?
454 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 486 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
455 487
488 # keep track of it
489 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
490
491 # Decide the function used to extract makefile variables.
492 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
493
456 # And if we didn't pass it, we can take a nosey in the Makefile 494 # And if we didn't pass it, we can take a nosey in the Makefile
457 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)" 495 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
458 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 496 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
459 497
460 # And contrary to existing functions I feel we shouldn't trust the 498 # And contrary to existing functions I feel we shouldn't trust the
461 # directory name to find version information as this seems insane. 499 # directory name to find version information as this seems insane.
462 # so we parse ${KV_DIR}/Makefile 500 # so we parse ${KERNEL_MAKEFILE}
463 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)" 501 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
464 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)" 502 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
465 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)" 503 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
466 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)" 504 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
467 505
468 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 506 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
469 then 507 then
508 if [ -z "${get_version_warning_done}" ]; then
509 get_version_warning_done=1
470 qeerror "Could not detect kernel version." 510 qeerror "Could not detect kernel version."
471 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 511 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
512 fi
472 return 1 513 return 1
473 fi 514 fi
474 515
475 # and in newer versions we can also pull LOCALVERSION if it is set. 516 # and in newer versions we can also pull LOCALVERSION if it is set.
476 # but before we do this, we need to find if we use a different object directory. 517 # but before we do this, we need to find if we use a different object directory.
477 # This *WILL* break if the user is using localversions, but we assume it was 518 # This *WILL* break if the user is using localversions, but we assume it was
478 # caught before this if they are. 519 # caught before this if they are.
479 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
480 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}" 520 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
481 521
482 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 522 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
483 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 523 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
484 if [ -n "${KV_OUT_DIR}" ]; 524 if [ -n "${KV_OUT_DIR}" ];
485 then 525 then
486 qeinfo "Found kernel object directory:" 526 qeinfo "Found kernel object directory:"
487 qeinfo " ${KV_OUT_DIR}" 527 qeinfo " ${KV_OUT_DIR}"
488
489 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
490 fi 528 fi
491 # and if we STILL have not got it, then we better just set it to KV_DIR 529 # and if we STILL have not got it, then we better just set it to KV_DIR
492 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 530 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
493 531
494 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 532 # Grab the kernel release from the output directory.
495 if linux_config_exists; then 533 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
496 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 534 # this function.
497 KV_LOCAL="${KV_LOCAL//\"/}" 535 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
536 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
537 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
538 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
539 else
540 KV_LOCAL=
541 fi
498 542
499 # For things like git that can append extra stuff: 543 # KV_LOCAL currently contains the full release; discard the first bits.
500 [ -e ${KV_DIR}/scripts/setlocalversion ] && 544 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
501 linux_chkconfig_builtin LOCALVERSION_AUTO && 545
502 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 546 # If the updated local version was not changed, the tree is not prepared.
547 # Clear out KV_LOCAL in that case.
548 # TODO: this does not detect a change in the localversion part between
549 # kernel.release and the value that would be generated.
550 if [ "$KV_LOCAL" = "$tmplocal" ]; then
551 KV_LOCAL=
552 else
553 KV_LOCAL=$tmplocal
503 fi 554 fi
504 555
505 # And we should set KV_FULL to the full expanded version 556 # And we should set KV_FULL to the full expanded version
506 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 557 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
507 558
516# It gets the version of the current running kernel and the result is the same as get_version() if the 567# 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. 568# function can find the sources.
518get_running_version() { 569get_running_version() {
519 KV_FULL=$(uname -r) 570 KV_FULL=$(uname -r)
520 571
572 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
573 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
574 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
575 unset KV_FULL
576 get_version
577 return $?
521 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 578 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
522 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 579 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
523 unset KV_FULL 580 unset KV_FULL
524 get_version 581 get_version
525 return $? 582 return $?
526 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then 583 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
527 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build) 584 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
528 unset KV_FULL 585 unset KV_FULL
529 get_version 586 get_version
530 return $? 587 return $?
531 else 588 else
589 # This handles a variety of weird kernel versions. Make sure to update
590 # tests/linux-info:get_running_version.sh if you want to change this.
591 local kv_full=${KV_FULL//[-+_]*}
532 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 592 KV_MAJOR=$(get_version_component_range 1 ${kv_full})
533 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 593 KV_MINOR=$(get_version_component_range 2 ${kv_full})
534 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 594 KV_PATCH=$(get_version_component_range 3 ${kv_full})
535 KV_PATCH=${KV_PATCH//-*} 595 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}${KV_PATCH:+.${KV_PATCH}}}"
536 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 596 : ${KV_PATCH:=0}
537 && KV_EXTRA="-${KV_FULL#*-}"
538 fi 597 fi
539 return 0 598 return 0
599}
600
601# This next function is named with the eclass prefix to avoid conflicts with
602# some old versionator-like eclass functions.
603
604# @FUNCTION: linux-info_get_any_version
605# @DESCRIPTION:
606# This attempts to find the version of the sources, and otherwise falls back to
607# the version of the running kernel.
608linux-info_get_any_version() {
609 get_version
610 if [[ $? -ne 0 ]]; then
611 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
612 get_running_version
613 fi
540} 614}
541 615
542 616
543# ebuild check functions 617# ebuild check functions
544# --------------------------------------- 618# ---------------------------------------
549check_kernel_built() { 623check_kernel_built() {
550 # if we haven't determined the version yet, we need to 624 # if we haven't determined the version yet, we need to
551 require_configured_kernel 625 require_configured_kernel
552 get_version 626 get_version
553 627
628 local versionh_path
629 if kernel_is -ge 3 7; then
630 versionh_path="include/generated/uapi/linux/version.h"
631 else
632 versionh_path="include/linux/version.h"
633 fi
634
554 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 635 if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
555 then 636 then
556 eerror "These sources have not yet been prepared." 637 eerror "These sources have not yet been prepared."
557 eerror "We cannot build against an unprepared tree." 638 eerror "We cannot build against an unprepared tree."
558 eerror "To resolve this, please type the following:" 639 eerror "To resolve this, please type the following:"
559 eerror 640 eerror
572check_modules_supported() { 653check_modules_supported() {
573 # if we haven't determined the version yet, we need too. 654 # if we haven't determined the version yet, we need too.
574 require_configured_kernel 655 require_configured_kernel
575 get_version 656 get_version
576 657
577 if ! linux_chkconfig_builtin "MODULES" 658 if ! linux_chkconfig_builtin "MODULES"; then
578 then
579 eerror "These sources do not support loading external modules." 659 eerror "These sources do not support loading external modules."
580 eerror "to be able to use this module please enable \"Loadable modules support\"" 660 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." 661 eerror "in your kernel, recompile and then try merging this module again."
582 die "No support for external modules in ${KV_FULL} config" 662 die "No support for external modules in ${KV_FULL} config"
583 fi 663 fi
586# @FUNCTION: check_extra_config 666# @FUNCTION: check_extra_config
587# @DESCRIPTION: 667# @DESCRIPTION:
588# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e. 668# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
589# the prefix ~ is not used) doesn't satisfy the directive. 669# the prefix ~ is not used) doesn't satisfy the directive.
590check_extra_config() { 670check_extra_config() {
591 local config negate die error reworkmodulenames 671 local config negate die error reworkmodulenames
592 local soft_errors_count=0 hard_errors_count=0 config_required=0 672 local soft_errors_count=0 hard_errors_count=0 config_required=0
673 # store the value of the QA check, because otherwise we won't catch usages
674 # after if check_extra_config is called AND other direct calls are done
675 # later.
676 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
593 677
594 # if we haven't determined the version yet, we need to 678 # if we haven't determined the version yet, we need to
595 get_version 679 linux-info_get_any_version
596 680
597 # Determine if we really need a .config. The only time when we don't need 681 # 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 "~". 682 # one is when all of the CONFIG_CHECK options are prefixed with "~".
599 for config in ${CONFIG_CHECK} 683 for config in ${CONFIG_CHECK}; do
600 do
601 if [[ "${config:0:1}" != "~" ]]; then 684 if [[ "${config:0:1}" != "~" ]]; then
602 config_required=1 685 config_required=1
603 break 686 break
604 fi 687 fi
605 done 688 done
608 # In the case where we don't require a .config, we can now bail out 691 # 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 692 # if the user has no .config as there is nothing to do. Otherwise
610 # code later will cause a failure due to missing .config. 693 # code later will cause a failure due to missing .config.
611 if ! linux_config_exists; then 694 if ! linux_config_exists; then
612 ewarn "Unable to check for the following kernel config options due" 695 ewarn "Unable to check for the following kernel config options due"
613 ewarn "to absence of any configured kernel sources:" 696 ewarn "to absence of any configured kernel sources or compiled"
697 ewarn "config:"
614 for config in ${CONFIG_CHECK}; do 698 for config in ${CONFIG_CHECK}; do
699 local_error="ERROR_${config#\~}"
700 msg="${!local_error}"
701 if [[ "x${msg}" == "x" ]]; then
702 local_error="WARNING_${config#\~}"
703 msg="${!local_error}"
704 fi
615 ewarn " - ${config#\~}" 705 ewarn " - ${config#\~}${msg:+ - }${msg}"
616 done 706 done
617 ewarn "You're on your own to make sure they are set if needed." 707 ewarn "You're on your own to make sure they are set if needed."
708 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
618 return 0 709 return 0
619 fi 710 fi
620 else 711 else
621 require_configured_kernel 712 require_configured_kernel
622 fi 713 fi
699 if [[ ${hard_errors_count} > 0 ]]; then 790 if [[ ${hard_errors_count} > 0 ]]; then
700 eerror "Please check to make sure these options are set correctly." 791 eerror "Please check to make sure these options are set correctly."
701 eerror "Failure to do so may cause unexpected problems." 792 eerror "Failure to do so may cause unexpected problems."
702 eerror "Once you have satisfied these options, please try merging" 793 eerror "Once you have satisfied these options, please try merging"
703 eerror "this package again." 794 eerror "this package again."
795 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
704 die "Incorrect kernel configuration options" 796 die "Incorrect kernel configuration options"
705 elif [[ ${soft_errors_count} > 0 ]]; then 797 elif [[ ${soft_errors_count} > 0 ]]; then
706 ewarn "Please check to make sure these options are set correctly." 798 ewarn "Please check to make sure these options are set correctly."
707 ewarn "Failure to do so may cause unexpected problems." 799 ewarn "Failure to do so may cause unexpected problems."
708 else 800 else
709 eend 0 801 eend 0
710 fi 802 fi
803 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
711} 804}
712 805
713check_zlibinflate() { 806check_zlibinflate() {
714 # if we haven't determined the version yet, we need to 807 # if we haven't determined the version yet, we need to
715 require_configured_kernel 808 require_configured_kernel
786# @FUNCTION: linux-info_pkg_setup 879# @FUNCTION: linux-info_pkg_setup
787# @DESCRIPTION: 880# @DESCRIPTION:
788# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured 881# 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) 882# to support the options specified in CONFIG_CHECK (if not null)
790linux-info_pkg_setup() { 883linux-info_pkg_setup() {
791 get_version 884 linux-info_get_any_version
792 if [[ $rc -ne 0 ]]; then
793 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
794 get_running_version
795 fi
796 885
797 if kernel_is 2 4; then 886 if kernel_is 2 4; then
798 if [ "$( gcc-major-version )" -eq "4" ] ; then 887 if [ "$( gcc-major-version )" -eq "4" ] ; then
799 echo 888 echo
800 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with" 889 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"

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