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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 1.97 2013/02/10 02:21:55 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 $f will NOT guaranteed later!"
239 fi
240}
223 241
224# @FUNCTION: linux_config_src_exists 242# @FUNCTION: linux_config_src_exists
225# @RETURN: true or false 243# @RETURN: true or false
226# @DESCRIPTION: 244# @DESCRIPTION:
227# It returns true if .config exists in a build directory otherwise false 245# It returns true if .config exists in a build directory otherwise false
228linux_config_src_exists() { 246linux_config_src_exists() {
229 [ -s "${KV_OUT_DIR}/.config" ] 247 export _LINUX_CONFIG_EXISTS_DONE=1
248 [[ -n ${KV_OUT_DIR} && -s ${KV_OUT_DIR}/.config ]]
230} 249}
231 250
232# @FUNCTION: linux_config_bin_exists 251# @FUNCTION: linux_config_bin_exists
233# @RETURN: true or false 252# @RETURN: true or false
234# @DESCRIPTION: 253# @DESCRIPTION:
235# It returns true if .config exists in /proc, otherwise false 254# It returns true if .config exists in /proc, otherwise false
236linux_config_bin_exists() { 255linux_config_bin_exists() {
256 export _LINUX_CONFIG_EXISTS_DONE=1
237 [ -s "/proc/config.gz" ] 257 [[ -s /proc/config.gz ]]
238} 258}
239 259
240# @FUNCTION: linux_config_exists 260# @FUNCTION: linux_config_exists
241# @RETURN: true or false 261# @RETURN: true or false
242# @DESCRIPTION: 262# @DESCRIPTION:
244# 264#
245# This function MUST be checked before using any of the linux_chkconfig_* 265# This function MUST be checked before using any of the linux_chkconfig_*
246# functions. 266# functions.
247linux_config_exists() { 267linux_config_exists() {
248 linux_config_src_exists || linux_config_bin_exists 268 linux_config_src_exists || linux_config_bin_exists
269}
270
271# @FUNCTION: linux_config_path
272# @DESCRIPTION:
273# Echo the name of the config file to use. If none are found,
274# then return false.
275linux_config_path() {
276 if linux_config_src_exists; then
277 echo "${KV_OUT_DIR}/.config"
278 elif linux_config_bin_exists; then
279 echo "/proc/config.gz"
280 else
281 return 1
282 fi
249} 283}
250 284
251# @FUNCTION: require_configured_kernel 285# @FUNCTION: require_configured_kernel
252# @DESCRIPTION: 286# @DESCRIPTION:
253# This function verifies that the current kernel is configured (it checks against the existence of .config) 287# This function verifies that the current kernel is configured (it checks against the existence of .config)
268# @DESCRIPTION: 302# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config 303# 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 304# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first. 305# MUST call linux_config_exists first.
272linux_chkconfig_present() { 306linux_chkconfig_present() {
273local RESULT 307 linux_config_qa_check linux_chkconfig_present
274 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 308 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == [my] ]]
275 local config
276 config="${KV_OUT_DIR}/.config"
277 [ ! -f "${config}" ] && config="/proc/config.gz"
278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
280} 309}
281 310
282# @FUNCTION: linux_chkconfig_module 311# @FUNCTION: linux_chkconfig_module
283# @USAGE: option 312# @USAGE: option
284# @RETURN: true or false 313# @RETURN: true or false
285# @DESCRIPTION: 314# @DESCRIPTION:
286# It checks that CONFIG_<option>=m is present in the current kernel .config 315# It checks that CONFIG_<option>=m is present in the current kernel .config
287# If linux_config_exists returns false, the results of this are UNDEFINED. You 316# If linux_config_exists returns false, the results of this are UNDEFINED. You
288# MUST call linux_config_exists first. 317# MUST call linux_config_exists first.
289linux_chkconfig_module() { 318linux_chkconfig_module() {
290local RESULT 319 linux_config_qa_check linux_chkconfig_module
291 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 320 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == m ]]
292 local config
293 config="${KV_OUT_DIR}/.config"
294 [ ! -f "${config}" ] && config="/proc/config.gz"
295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
296 [ "${RESULT}" = "m" ] && return 0 || return 1
297} 321}
298 322
299# @FUNCTION: linux_chkconfig_builtin 323# @FUNCTION: linux_chkconfig_builtin
300# @USAGE: option 324# @USAGE: option
301# @RETURN: true or false 325# @RETURN: true or false
302# @DESCRIPTION: 326# @DESCRIPTION:
303# It checks that CONFIG_<option>=y is present in the current kernel .config 327# 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 328# If linux_config_exists returns false, the results of this are UNDEFINED. You
305# MUST call linux_config_exists first. 329# MUST call linux_config_exists first.
306linux_chkconfig_builtin() { 330linux_chkconfig_builtin() {
307local RESULT 331 linux_config_qa_check linux_chkconfig_builtin
308 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 332 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == y ]]
309 local config
310 config="${KV_OUT_DIR}/.config"
311 [ ! -f "${config}" ] && config="/proc/config.gz"
312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
313 [ "${RESULT}" = "y" ] && return 0 || return 1
314} 333}
315 334
316# @FUNCTION: linux_chkconfig_string 335# @FUNCTION: linux_chkconfig_string
317# @USAGE: option 336# @USAGE: option
318# @RETURN: CONFIG_<option> 337# @RETURN: CONFIG_<option>
319# @DESCRIPTION: 338# @DESCRIPTION:
320# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel). 339# 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 340# If linux_config_exists returns false, the results of this are UNDEFINED. You
322# MUST call linux_config_exists first. 341# MUST call linux_config_exists first.
323linux_chkconfig_string() { 342linux_chkconfig_string() {
324 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 343 linux_config_qa_check linux_chkconfig_string
325 local config
326 config="${KV_OUT_DIR}/.config"
327 [ ! -f "${config}" ] && config="/proc/config.gz"
328 getfilevar_noexec "CONFIG_${1}" "${config}" 344 getfilevar_noexec "CONFIG_$1" "$(linux_config_path)"
329} 345}
330 346
331# Versioning Functions 347# Versioning Functions
332# --------------------------------------- 348# ---------------------------------------
333 349
345# kernel_is 2 6 returns true 361# kernel_is 2 6 returns true
346# kernel_is 2 6 8 returns false 362# kernel_is 2 6 8 returns false
347# kernel_is 2 6 9 returns true 363# kernel_is 2 6 9 returns true
348# @CODE 364# @CODE
349 365
350# got the jist yet? 366# Note: duplicated in kernel-2.eclass
351
352kernel_is() { 367kernel_is() {
353 # if we haven't determined the version yet, we need to. 368 # if we haven't determined the version yet, we need to.
354 get_version 369 linux-info_get_any_version
370
371 # Now we can continue
355 local operator test value x=0 y=0 z=0 372 local operator test value
356 373
357 case ${1} in 374 case ${1#-} in
358 lt) operator="-lt"; shift;; 375 lt) operator="-lt"; shift;;
359 gt) operator="-gt"; shift;; 376 gt) operator="-gt"; shift;;
360 le) operator="-le"; shift;; 377 le) operator="-le"; shift;;
361 ge) operator="-ge"; shift;; 378 ge) operator="-ge"; shift;;
362 eq) operator="-eq"; shift;; 379 eq) operator="-eq"; shift;;
363 *) operator="-eq";; 380 *) operator="-eq";;
364 esac 381 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.";; 382 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
379 esac 383
380 done 384 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
381 385 : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
382 [ ${test} ${operator} ${value} ] && return 0 || return 1 386 [ ${test} ${operator} ${value} ]
383} 387}
384 388
385get_localversion() { 389get_localversion() {
386 local lv_list i x 390 local lv_list i x
387 391
395 done 399 done
396 x=${x/ /} 400 x=${x/ /}
397 echo ${x} 401 echo ${x}
398} 402}
399 403
404# Check if the Makefile is valid for direct parsing.
405# Check status results:
406# - PASS, use 'getfilevar' to extract values
407# - FAIL, use 'getfilevar_noexec' to extract values
408# The check may fail if:
409# - make is not present
410# - corruption exists in the kernel makefile
411get_makefile_extract_function() {
412 local a='' b='' mkfunc='getfilevar'
413 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
414 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
415 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
416 echo "${mkfunc}"
417}
418
419# internal variable, so we know to only print the warning once
420get_version_warning_done=
421
400# @FUNCTION: get_version 422# @FUNCTION: get_version
401# @DESCRIPTION: 423# @DESCRIPTION:
402# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable 424# 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). 425# (if KV_FULL is already set it does nothing).
404# 426#
406# 428#
407# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid 429# 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 430# 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). 431# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
410get_version() { 432get_version() {
411 local kbuild_output 433 local kbuild_output mkfunc tmplocal
412 434
413 # no need to execute this twice assuming KV_FULL is populated. 435 # no need to execute this twice assuming KV_FULL is populated.
414 # we can force by unsetting KV_FULL 436 # we can force by unsetting KV_FULL
415 [ -n "${KV_FULL}" ] && return 0 437 [ -n "${KV_FULL}" ] && return 0
416 438
417 # if we dont know KV_FULL, then we need too. 439 # 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 440 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
419 unset KV_DIR 441 unset KV_DIR
420 442
421 # KV_DIR will contain the full path to the sources directory we should use 443 # KV_DIR will contain the full path to the sources directory we should use
444 [ -z "${get_version_warning_done}" ] && \
422 qeinfo "Determining the location of the kernel source code" 445 qeinfo "Determining the location of the kernel source code"
423 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 446 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
424 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 447 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
425 448
426 if [ -z "${KV_DIR}" ] 449 if [ -z "${KV_DIR}" ]
427 then 450 then
451 if [ -z "${get_version_warning_done}" ]; then
452 get_version_warning_done=1
428 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 453 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
429 qeinfo "This package requires Linux sources." 454 #qeinfo "This package requires Linux sources."
430 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 455 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
431 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 456 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
432 qeinfo "(or the kernel you wish to build against)." 457 qeinfo "(or the kernel you wish to build against)."
433 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 458 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
434 else 459 else
435 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 460 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
461 fi
436 fi 462 fi
437 return 1 463 return 1
438 fi 464 fi
439 465
466 if [ -z "${get_version_warning_done}" ]; then
440 qeinfo "Found kernel source directory:" 467 qeinfo "Found kernel source directory:"
441 qeinfo " ${KV_DIR}" 468 qeinfo " ${KV_DIR}"
469 fi
442 470
443 if [ ! -s "${KV_DIR}/Makefile" ] 471 if [ ! -s "${KV_DIR}/Makefile" ]
444 then 472 then
473 if [ -z "${get_version_warning_done}" ]; then
474 get_version_warning_done=1
445 qeerror "Could not find a Makefile in the kernel source directory." 475 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" 476 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
477 fi
447 return 1 478 return 1
448 fi 479 fi
449 480
450 # OK so now we know our sources directory, but they might be using 481 # OK so now we know our sources directory, but they might be using
451 # KBUILD_OUTPUT, and we need this for .config and localversions-* 482 # KBUILD_OUTPUT, and we need this for .config and localversions-*
452 # so we better find it eh? 483 # so we better find it eh?
453 # do we pass KBUILD_OUTPUT on the CLI? 484 # do we pass KBUILD_OUTPUT on the CLI?
454 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 485 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
455 486
487 # keep track of it
488 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
489
490 # Decide the function used to extract makefile variables.
491 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
492
456 # And if we didn't pass it, we can take a nosey in the Makefile 493 # And if we didn't pass it, we can take a nosey in the Makefile
457 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)" 494 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
458 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 495 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
459 496
460 # And contrary to existing functions I feel we shouldn't trust the 497 # And contrary to existing functions I feel we shouldn't trust the
461 # directory name to find version information as this seems insane. 498 # directory name to find version information as this seems insane.
462 # so we parse ${KV_DIR}/Makefile 499 # so we parse ${KERNEL_MAKEFILE}
463 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)" 500 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
464 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)" 501 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
465 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)" 502 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
466 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)" 503 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
467 504
468 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 505 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
469 then 506 then
507 if [ -z "${get_version_warning_done}" ]; then
508 get_version_warning_done=1
470 qeerror "Could not detect kernel version." 509 qeerror "Could not detect kernel version."
471 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 510 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
511 fi
472 return 1 512 return 1
473 fi 513 fi
474 514
475 # and in newer versions we can also pull LOCALVERSION if it is set. 515 # and in newer versions we can also pull LOCALVERSION if it is set.
476 # but before we do this, we need to find if we use a different object directory. 516 # but before we do this, we need to find if we use a different object directory.
477 # This *WILL* break if the user is using localversions, but we assume it was 517 # This *WILL* break if the user is using localversions, but we assume it was
478 # caught before this if they are. 518 # caught before this if they are.
479 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
480 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}" 519 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
481 520
482 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 521 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
483 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 522 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
484 if [ -n "${KV_OUT_DIR}" ]; 523 if [ -n "${KV_OUT_DIR}" ];
485 then 524 then
486 qeinfo "Found kernel object directory:" 525 qeinfo "Found kernel object directory:"
487 qeinfo " ${KV_OUT_DIR}" 526 qeinfo " ${KV_OUT_DIR}"
488
489 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
490 fi 527 fi
491 # and if we STILL have not got it, then we better just set it to KV_DIR 528 # and if we STILL have not got it, then we better just set it to KV_DIR
492 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 529 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
493 530
494 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 531 # Grab the kernel release from the output directory.
495 if linux_config_exists; then 532 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
496 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 533 # this function.
497 KV_LOCAL="${KV_LOCAL//\"/}" 534 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
535 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
536 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
537 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
538 else
539 KV_LOCAL=
540 fi
498 541
499 # For things like git that can append extra stuff: 542 # KV_LOCAL currently contains the full release; discard the first bits.
500 [ -e ${KV_DIR}/scripts/setlocalversion ] && 543 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
501 linux_chkconfig_builtin LOCALVERSION_AUTO && 544
502 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 545 # If the updated local version was not changed, the tree is not prepared.
546 # Clear out KV_LOCAL in that case.
547 # TODO: this does not detect a change in the localversion part between
548 # kernel.release and the value that would be generated.
549 if [ "$KV_LOCAL" = "$tmplocal" ]; then
550 KV_LOCAL=
551 else
552 KV_LOCAL=$tmplocal
503 fi 553 fi
504 554
505 # And we should set KV_FULL to the full expanded version 555 # And we should set KV_FULL to the full expanded version
506 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 556 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
507 557
516# It gets the version of the current running kernel and the result is the same as get_version() if the 566# 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. 567# function can find the sources.
518get_running_version() { 568get_running_version() {
519 KV_FULL=$(uname -r) 569 KV_FULL=$(uname -r)
520 570
571 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
572 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
573 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
574 unset KV_FULL
575 get_version
576 return $?
521 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 577 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
522 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 578 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
523 unset KV_FULL 579 unset KV_FULL
524 get_version 580 get_version
525 return $? 581 return $?
526 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then 582 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
527 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build) 583 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
528 unset KV_FULL 584 unset KV_FULL
529 get_version 585 get_version
530 return $? 586 return $?
531 else 587 else
588 # This handles a variety of weird kernel versions. Make sure to update
589 # tests/linux-info:get_running_version.sh if you want to change this.
590 local kv_full=${KV_FULL//[-+_]*}
532 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 591 KV_MAJOR=$(get_version_component_range 1 ${kv_full})
533 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 592 KV_MINOR=$(get_version_component_range 2 ${kv_full})
534 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 593 KV_PATCH=$(get_version_component_range 3 ${kv_full})
535 KV_PATCH=${KV_PATCH//-*} 594 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}${KV_PATCH:+.${KV_PATCH}}}"
536 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 595 : ${KV_PATCH:=0}
537 && KV_EXTRA="-${KV_FULL#*-}"
538 fi 596 fi
539 return 0 597 return 0
598}
599
600# This next function is named with the eclass prefix to avoid conflicts with
601# some old versionator-like eclass functions.
602
603# @FUNCTION: linux-info_get_any_version
604# @DESCRIPTION:
605# This attempts to find the version of the sources, and otherwise falls back to
606# the version of the running kernel.
607linux-info_get_any_version() {
608 get_version
609 if [[ $? -ne 0 ]]; then
610 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
611 get_running_version
612 fi
540} 613}
541 614
542 615
543# ebuild check functions 616# ebuild check functions
544# --------------------------------------- 617# ---------------------------------------
549check_kernel_built() { 622check_kernel_built() {
550 # if we haven't determined the version yet, we need to 623 # if we haven't determined the version yet, we need to
551 require_configured_kernel 624 require_configured_kernel
552 get_version 625 get_version
553 626
627 local versionh_path
628 if kernel_is -ge 3 7; then
629 versionh_path="include/generated/uapi/linux/version.h"
630 else
631 versionh_path="include/linux/version.h"
632 fi
633
554 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 634 if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
555 then 635 then
556 eerror "These sources have not yet been prepared." 636 eerror "These sources have not yet been prepared."
557 eerror "We cannot build against an unprepared tree." 637 eerror "We cannot build against an unprepared tree."
558 eerror "To resolve this, please type the following:" 638 eerror "To resolve this, please type the following:"
559 eerror 639 eerror
572check_modules_supported() { 652check_modules_supported() {
573 # if we haven't determined the version yet, we need too. 653 # if we haven't determined the version yet, we need too.
574 require_configured_kernel 654 require_configured_kernel
575 get_version 655 get_version
576 656
577 if ! linux_chkconfig_builtin "MODULES" 657 if ! linux_chkconfig_builtin "MODULES"; then
578 then
579 eerror "These sources do not support loading external modules." 658 eerror "These sources do not support loading external modules."
580 eerror "to be able to use this module please enable \"Loadable modules support\"" 659 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." 660 eerror "in your kernel, recompile and then try merging this module again."
582 die "No support for external modules in ${KV_FULL} config" 661 die "No support for external modules in ${KV_FULL} config"
583 fi 662 fi
586# @FUNCTION: check_extra_config 665# @FUNCTION: check_extra_config
587# @DESCRIPTION: 666# @DESCRIPTION:
588# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e. 667# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
589# the prefix ~ is not used) doesn't satisfy the directive. 668# the prefix ~ is not used) doesn't satisfy the directive.
590check_extra_config() { 669check_extra_config() {
591 local config negate die error reworkmodulenames 670 local config negate die error reworkmodulenames
592 local soft_errors_count=0 hard_errors_count=0 config_required=0 671 local soft_errors_count=0 hard_errors_count=0 config_required=0
672 # store the value of the QA check, because otherwise we won't catch usages
673 # after if check_extra_config is called AND other direct calls are done
674 # later.
675 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
593 676
594 # if we haven't determined the version yet, we need to 677 # if we haven't determined the version yet, we need to
595 get_version 678 linux-info_get_any_version
596 679
597 # Determine if we really need a .config. The only time when we don't need 680 # 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 "~". 681 # one is when all of the CONFIG_CHECK options are prefixed with "~".
599 for config in ${CONFIG_CHECK} 682 for config in ${CONFIG_CHECK}; do
600 do
601 if [[ "${config:0:1}" != "~" ]]; then 683 if [[ "${config:0:1}" != "~" ]]; then
602 config_required=1 684 config_required=1
603 break 685 break
604 fi 686 fi
605 done 687 done
608 # In the case where we don't require a .config, we can now bail out 690 # 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 691 # if the user has no .config as there is nothing to do. Otherwise
610 # code later will cause a failure due to missing .config. 692 # code later will cause a failure due to missing .config.
611 if ! linux_config_exists; then 693 if ! linux_config_exists; then
612 ewarn "Unable to check for the following kernel config options due" 694 ewarn "Unable to check for the following kernel config options due"
613 ewarn "to absence of any configured kernel sources:" 695 ewarn "to absence of any configured kernel sources or compiled"
696 ewarn "config:"
614 for config in ${CONFIG_CHECK}; do 697 for config in ${CONFIG_CHECK}; do
698 local_error="ERROR_${config#\~}"
699 msg="${!local_error}"
700 if [[ "x${msg}" == "x" ]]; then
701 local_error="WARNING_${config#\~}"
702 msg="${!local_error}"
703 fi
615 ewarn " - ${config#\~}" 704 ewarn " - ${config#\~}${msg:+ - }${msg}"
616 done 705 done
617 ewarn "You're on your own to make sure they are set if needed." 706 ewarn "You're on your own to make sure they are set if needed."
707 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
618 return 0 708 return 0
619 fi 709 fi
620 else 710 else
621 require_configured_kernel 711 require_configured_kernel
622 fi 712 fi
699 if [[ ${hard_errors_count} > 0 ]]; then 789 if [[ ${hard_errors_count} > 0 ]]; then
700 eerror "Please check to make sure these options are set correctly." 790 eerror "Please check to make sure these options are set correctly."
701 eerror "Failure to do so may cause unexpected problems." 791 eerror "Failure to do so may cause unexpected problems."
702 eerror "Once you have satisfied these options, please try merging" 792 eerror "Once you have satisfied these options, please try merging"
703 eerror "this package again." 793 eerror "this package again."
794 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
704 die "Incorrect kernel configuration options" 795 die "Incorrect kernel configuration options"
705 elif [[ ${soft_errors_count} > 0 ]]; then 796 elif [[ ${soft_errors_count} > 0 ]]; then
706 ewarn "Please check to make sure these options are set correctly." 797 ewarn "Please check to make sure these options are set correctly."
707 ewarn "Failure to do so may cause unexpected problems." 798 ewarn "Failure to do so may cause unexpected problems."
708 else 799 else
709 eend 0 800 eend 0
710 fi 801 fi
802 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
711} 803}
712 804
713check_zlibinflate() { 805check_zlibinflate() {
714 # if we haven't determined the version yet, we need to 806 # if we haven't determined the version yet, we need to
715 require_configured_kernel 807 require_configured_kernel
786# @FUNCTION: linux-info_pkg_setup 878# @FUNCTION: linux-info_pkg_setup
787# @DESCRIPTION: 879# @DESCRIPTION:
788# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured 880# 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) 881# to support the options specified in CONFIG_CHECK (if not null)
790linux-info_pkg_setup() { 882linux-info_pkg_setup() {
791 get_version 883 linux-info_get_any_version
792 if [[ $rc -ne 0 ]]; then
793 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
794 get_running_version
795 fi
796 884
797 if kernel_is 2 4; then 885 if kernel_is 2 4; then
798 if [ "$( gcc-major-version )" -eq "4" ] ; then 886 if [ "$( gcc-major-version )" -eq "4" ] ; then
799 echo 887 echo
800 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with" 888 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"

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