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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 1.100 2013/02/10 07:53:31 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
113DEPEND="kernel_linux? ( virtual/linux-sources )"
114RDEPEND=""
115 113
116# Overwritable environment Var's 114# Overwritable environment Var's
117# --------------------------------------- 115# ---------------------------------------
118KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 116KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
119 117
150 esac 148 esac
151 [ -n "${outputmsg}" ] && ${type} "${outputmsg}" 149 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
152} 150}
153 151
154qeinfo() { qout einfo "${@}" ; } 152qeinfo() { qout einfo "${@}" ; }
153qewarn() { qout ewarn "${@}" ; }
155qeerror() { qout eerror "${@}" ; } 154qeerror() { qout eerror "${@}" ; }
156 155
157# File Functions 156# File Functions
158# --------------------------------------- 157# ---------------------------------------
159 158
163# @DESCRIPTION: 162# @DESCRIPTION:
164# It detects the value of the variable defined in the file configfile. This is 163# It detects the value of the variable defined in the file configfile. This is
165# done by including the configfile, and printing the variable with Make. 164# done by including the configfile, and printing the variable with Make.
166# It WILL break if your makefile has missing dependencies! 165# It WILL break if your makefile has missing dependencies!
167getfilevar() { 166getfilevar() {
168local ERROR basefname basedname myARCH="${ARCH}" 167 local ERROR basefname basedname myARCH="${ARCH}"
169 ERROR=0 168 ERROR=0
170 169
171 [ -z "${1}" ] && ERROR=1 170 [ -z "${1}" ] && ERROR=1
172 [ ! -f "${2}" ] && ERROR=1 171 [ ! -f "${2}" ] && ERROR=1
173 172
179 else 178 else
180 basefname="$(basename ${2})" 179 basefname="$(basename ${2})"
181 basedname="$(dirname ${2})" 180 basedname="$(dirname ${2})"
182 unset ARCH 181 unset ARCH
183 182
183 # We use nonfatal because we want the caller to take care of things #373151
184 [[ ${EAPI:-0} == [0123] ]] && nonfatal() { "$@"; }
184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \ 185 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null 186 nonfatal emake -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
186 187
187 ARCH=${myARCH} 188 ARCH=${myARCH}
188 fi 189 fi
189} 190}
190 191
194# @DESCRIPTION: 195# @DESCRIPTION:
195# It detects the value of the variable defined in the file configfile. 196# It detects the value of the variable defined in the file configfile.
196# This is done with sed matching an expression only. If the variable is defined, 197# This is done with sed matching an expression only. If the variable is defined,
197# you will run into problems. See getfilevar for those cases. 198# you will run into problems. See getfilevar for those cases.
198getfilevar_noexec() { 199getfilevar_noexec() {
199 local ERROR basefname basedname mycat myARCH="${ARCH}" 200 local ERROR basefname basedname mycat myARCH="${ARCH}"
200 ERROR=0 201 ERROR=0
201 mycat='cat' 202 mycat='cat'
202 203
203 [ -z "${1}" ] && ERROR=1 204 [ -z "${1}" ] && ERROR=1
204 [ ! -f "${2}" ] && ERROR=1 205 [ ! -f "${2}" ] && ERROR=1
205 [ "${2#.gz}" != "${2}" ] && mycat='zcat' 206 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
206 207
207 if [ "${ERROR}" = 1 ] 208 if [ "${ERROR}" = 1 ]
208 then 209 then
209 echo -e "\n" 210 echo -e "\n"
210 eerror "getfilevar_noexec requires 2 variables, with the second a valid file." 211 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
211 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>" 212 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
212 else 213 else
213 ${mycat} "${2}" | \ 214 ${mycat} "${2}" | \
214 sed -n \ 215 sed -n \
215 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{ 216 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
216 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ; 217 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
217 s,[[:space:]]*\$,,g ; 218 s,[[:space:]]*\$,,g ;
218 p 219 p
219 }" 220 }"
220 fi 221 fi
221} 222}
222 223
224# @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
225# @INTERNAL
226# @DESCRIPTION:
227# This is only set if one of the linux_config_*exists functions has been called.
228# We use it for a QA warning that the check for a config has not been performed,
229# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
230# config is available at all.
231_LINUX_CONFIG_EXISTS_DONE=
232
233linux_config_qa_check() {
234 local f="$1"
235 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
236 ewarn "QA: You called $f before any linux_config_exists!"
237 ewarn "QA: The return value of $f will NOT guaranteed later!"
238 fi
239}
223 240
224# @FUNCTION: linux_config_src_exists 241# @FUNCTION: linux_config_src_exists
225# @RETURN: true or false 242# @RETURN: true or false
226# @DESCRIPTION: 243# @DESCRIPTION:
227# It returns true if .config exists in a build directory otherwise false 244# It returns true if .config exists in a build directory otherwise false
228linux_config_src_exists() { 245linux_config_src_exists() {
229 [ -s "${KV_OUT_DIR}/.config" ] 246 export _LINUX_CONFIG_EXISTS_DONE=1
247 [[ -n ${KV_OUT_DIR} && -s ${KV_OUT_DIR}/.config ]]
230} 248}
231 249
232# @FUNCTION: linux_config_bin_exists 250# @FUNCTION: linux_config_bin_exists
233# @RETURN: true or false 251# @RETURN: true or false
234# @DESCRIPTION: 252# @DESCRIPTION:
235# It returns true if .config exists in /proc, otherwise false 253# It returns true if .config exists in /proc, otherwise false
236linux_config_bin_exists() { 254linux_config_bin_exists() {
255 export _LINUX_CONFIG_EXISTS_DONE=1
237 [ -s "/proc/config.gz" ] 256 [[ -s /proc/config.gz ]]
238} 257}
239 258
240# @FUNCTION: linux_config_exists 259# @FUNCTION: linux_config_exists
241# @RETURN: true or false 260# @RETURN: true or false
242# @DESCRIPTION: 261# @DESCRIPTION:
244# 263#
245# This function MUST be checked before using any of the linux_chkconfig_* 264# This function MUST be checked before using any of the linux_chkconfig_*
246# functions. 265# functions.
247linux_config_exists() { 266linux_config_exists() {
248 linux_config_src_exists || linux_config_bin_exists 267 linux_config_src_exists || linux_config_bin_exists
268}
269
270# @FUNCTION: linux_config_path
271# @DESCRIPTION:
272# Echo the name of the config file to use. If none are found,
273# then return false.
274linux_config_path() {
275 if linux_config_src_exists; then
276 echo "${KV_OUT_DIR}/.config"
277 elif linux_config_bin_exists; then
278 echo "/proc/config.gz"
279 else
280 return 1
281 fi
249} 282}
250 283
251# @FUNCTION: require_configured_kernel 284# @FUNCTION: require_configured_kernel
252# @DESCRIPTION: 285# @DESCRIPTION:
253# This function verifies that the current kernel is configured (it checks against the existence of .config) 286# This function verifies that the current kernel is configured (it checks against the existence of .config)
268# @DESCRIPTION: 301# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config 302# 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 303# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first. 304# MUST call linux_config_exists first.
272linux_chkconfig_present() { 305linux_chkconfig_present() {
273local RESULT 306 linux_config_qa_check linux_chkconfig_present
274 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 307 [[ $(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 "${RESULT}" = "y" ] && return 0 || return 1
280} 308}
281 309
282# @FUNCTION: linux_chkconfig_module 310# @FUNCTION: linux_chkconfig_module
283# @USAGE: option 311# @USAGE: option
284# @RETURN: true or false 312# @RETURN: true or false
285# @DESCRIPTION: 313# @DESCRIPTION:
286# It checks that CONFIG_<option>=m is present in the current kernel .config 314# It checks that CONFIG_<option>=m is present in the current kernel .config
287# If linux_config_exists returns false, the results of this are UNDEFINED. You 315# If linux_config_exists returns false, the results of this are UNDEFINED. You
288# MUST call linux_config_exists first. 316# MUST call linux_config_exists first.
289linux_chkconfig_module() { 317linux_chkconfig_module() {
290local RESULT 318 linux_config_qa_check linux_chkconfig_module
291 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 319 [[ $(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} 320}
298 321
299# @FUNCTION: linux_chkconfig_builtin 322# @FUNCTION: linux_chkconfig_builtin
300# @USAGE: option 323# @USAGE: option
301# @RETURN: true or false 324# @RETURN: true or false
302# @DESCRIPTION: 325# @DESCRIPTION:
303# It checks that CONFIG_<option>=y is present in the current kernel .config 326# 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 327# If linux_config_exists returns false, the results of this are UNDEFINED. You
305# MUST call linux_config_exists first. 328# MUST call linux_config_exists first.
306linux_chkconfig_builtin() { 329linux_chkconfig_builtin() {
307local RESULT 330 linux_config_qa_check linux_chkconfig_builtin
308 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 331 [[ $(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} 332}
315 333
316# @FUNCTION: linux_chkconfig_string 334# @FUNCTION: linux_chkconfig_string
317# @USAGE: option 335# @USAGE: option
318# @RETURN: CONFIG_<option> 336# @RETURN: CONFIG_<option>
319# @DESCRIPTION: 337# @DESCRIPTION:
320# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel). 338# 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 339# If linux_config_exists returns false, the results of this are UNDEFINED. You
322# MUST call linux_config_exists first. 340# MUST call linux_config_exists first.
323linux_chkconfig_string() { 341linux_chkconfig_string() {
324 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 342 linux_config_qa_check linux_chkconfig_string
325 local config
326 config="${KV_OUT_DIR}/.config"
327 [ ! -f "${config}" ] && config="/proc/config.gz"
328 getfilevar_noexec "CONFIG_${1}" "${config}" 343 getfilevar_noexec "CONFIG_$1" "$(linux_config_path)"
329} 344}
330 345
331# Versioning Functions 346# Versioning Functions
332# --------------------------------------- 347# ---------------------------------------
333 348
345# kernel_is 2 6 returns true 360# kernel_is 2 6 returns true
346# kernel_is 2 6 8 returns false 361# kernel_is 2 6 8 returns false
347# kernel_is 2 6 9 returns true 362# kernel_is 2 6 9 returns true
348# @CODE 363# @CODE
349 364
350# got the jist yet? 365# Note: duplicated in kernel-2.eclass
351
352kernel_is() { 366kernel_is() {
353 # if we haven't determined the version yet, we need to. 367 # if we haven't determined the version yet, we need to.
354 get_version 368 linux-info_get_any_version
369
370 # Now we can continue
355 local operator test value x=0 y=0 z=0 371 local operator test value
356 372
357 case ${1} in 373 case ${1#-} in
358 lt) operator="-lt"; shift;; 374 lt) operator="-lt"; shift;;
359 gt) operator="-gt"; shift;; 375 gt) operator="-gt"; shift;;
360 le) operator="-le"; shift;; 376 le) operator="-le"; shift;;
361 ge) operator="-ge"; shift;; 377 ge) operator="-ge"; shift;;
362 eq) operator="-eq"; shift;; 378 eq) operator="-eq"; shift;;
363 *) operator="-eq";; 379 *) operator="-eq";;
364 esac 380 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.";; 381 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
379 esac 382
380 done 383 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
381 384 : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
382 [ ${test} ${operator} ${value} ] && return 0 || return 1 385 [ ${test} ${operator} ${value} ]
383} 386}
384 387
385get_localversion() { 388get_localversion() {
386 local lv_list i x 389 local lv_list i x
387 390
395 done 398 done
396 x=${x/ /} 399 x=${x/ /}
397 echo ${x} 400 echo ${x}
398} 401}
399 402
403# Check if the Makefile is valid for direct parsing.
404# Check status results:
405# - PASS, use 'getfilevar' to extract values
406# - FAIL, use 'getfilevar_noexec' to extract values
407# The check may fail if:
408# - make is not present
409# - corruption exists in the kernel makefile
410get_makefile_extract_function() {
411 local a='' b='' mkfunc='getfilevar'
412 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
413 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
414 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
415 echo "${mkfunc}"
416}
417
418# internal variable, so we know to only print the warning once
419get_version_warning_done=
420
400# @FUNCTION: get_version 421# @FUNCTION: get_version
401# @DESCRIPTION: 422# @DESCRIPTION:
402# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable 423# 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). 424# (if KV_FULL is already set it does nothing).
404# 425#
406# 427#
407# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid 428# 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 429# 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). 430# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
410get_version() { 431get_version() {
411 local kbuild_output 432 local kbuild_output mkfunc tmplocal
412 433
413 # no need to execute this twice assuming KV_FULL is populated. 434 # no need to execute this twice assuming KV_FULL is populated.
414 # we can force by unsetting KV_FULL 435 # we can force by unsetting KV_FULL
415 [ -n "${KV_FULL}" ] && return 0 436 [ -n "${KV_FULL}" ] && return 0
416 437
417 # if we dont know KV_FULL, then we need too. 438 # 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 439 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
419 unset KV_DIR 440 unset KV_DIR
420 441
421 # KV_DIR will contain the full path to the sources directory we should use 442 # KV_DIR will contain the full path to the sources directory we should use
443 [ -z "${get_version_warning_done}" ] && \
422 qeinfo "Determining the location of the kernel source code" 444 qeinfo "Determining the location of the kernel source code"
423 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 445 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
424 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 446 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
425 447
426 if [ -z "${KV_DIR}" ] 448 if [ -z "${KV_DIR}" ]
427 then 449 then
450 if [ -z "${get_version_warning_done}" ]; then
451 get_version_warning_done=1
428 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 452 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
429 qeinfo "This package requires Linux sources." 453 #qeinfo "This package requires Linux sources."
430 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 454 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
431 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 455 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
432 qeinfo "(or the kernel you wish to build against)." 456 qeinfo "(or the kernel you wish to build against)."
433 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 457 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
434 else 458 else
435 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 459 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
460 fi
436 fi 461 fi
437 return 1 462 return 1
438 fi 463 fi
439 464
465 # See if the kernel dir is actually an output dir. #454294
466 if [ -z "${KBUILD_OUTPUT}" -a -L "${KERNEL_DIR}/source" ]; then
467 KBUILD_OUTPUT=${KERNEL_DIR}
468 KERNEL_DIR=$(readlink -f "${KERNEL_DIR}/source")
469 KV_DIR=${KERNEL_DIR}
470 fi
471
472 if [ -z "${get_version_warning_done}" ]; then
440 qeinfo "Found kernel source directory:" 473 qeinfo "Found kernel source directory:"
441 qeinfo " ${KV_DIR}" 474 qeinfo " ${KV_DIR}"
475 fi
442 476
443 if [ ! -s "${KV_DIR}/Makefile" ] 477 if [ ! -s "${KV_DIR}/Makefile" ]
444 then 478 then
479 if [ -z "${get_version_warning_done}" ]; then
480 get_version_warning_done=1
445 qeerror "Could not find a Makefile in the kernel source directory." 481 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" 482 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
483 fi
447 return 1 484 return 1
448 fi 485 fi
449 486
450 # OK so now we know our sources directory, but they might be using 487 # OK so now we know our sources directory, but they might be using
451 # KBUILD_OUTPUT, and we need this for .config and localversions-* 488 # KBUILD_OUTPUT, and we need this for .config and localversions-*
452 # so we better find it eh? 489 # so we better find it eh?
453 # do we pass KBUILD_OUTPUT on the CLI? 490 # do we pass KBUILD_OUTPUT on the CLI?
454 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 491 local OUTPUT_DIR=${KBUILD_OUTPUT}
492
493 # keep track of it
494 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
495
496 # Decide the function used to extract makefile variables.
497 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
455 498
456 # And if we didn't pass it, we can take a nosey in the Makefile 499 # And if we didn't pass it, we can take a nosey in the Makefile
457 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)" 500 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
458 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 501 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
459 502
460 # And contrary to existing functions I feel we shouldn't trust the 503 # And contrary to existing functions I feel we shouldn't trust the
461 # directory name to find version information as this seems insane. 504 # directory name to find version information as this seems insane.
462 # so we parse ${KV_DIR}/Makefile 505 # so we parse ${KERNEL_MAKEFILE}
463 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)" 506 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
464 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)" 507 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
465 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)" 508 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
466 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)" 509 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
467 510
468 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 511 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
469 then 512 then
513 if [ -z "${get_version_warning_done}" ]; then
514 get_version_warning_done=1
470 qeerror "Could not detect kernel version." 515 qeerror "Could not detect kernel version."
471 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 516 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
517 fi
472 return 1 518 return 1
473 fi 519 fi
474 520
475 # and in newer versions we can also pull LOCALVERSION if it is set. 521 # and in newer versions we can also pull LOCALVERSION if it is set.
476 # but before we do this, we need to find if we use a different object directory. 522 # but before we do this, we need to find if we use a different object directory.
477 # This *WILL* break if the user is using localversions, but we assume it was 523 # This *WILL* break if the user is using localversions, but we assume it was
478 # caught before this if they are. 524 # caught before this if they are.
479 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
480 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}" 525 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
481 526
482 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 527 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
483 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 528 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
484 if [ -n "${KV_OUT_DIR}" ]; 529 if [ -n "${KV_OUT_DIR}" ];
485 then 530 then
486 qeinfo "Found kernel object directory:" 531 qeinfo "Found kernel object directory:"
487 qeinfo " ${KV_OUT_DIR}" 532 qeinfo " ${KV_OUT_DIR}"
488
489 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
490 fi 533 fi
491 # and if we STILL have not got it, then we better just set it to KV_DIR 534 # and if we STILL have not got it, then we better just set it to KV_DIR
492 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 535 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
493 536
494 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 537 # Grab the kernel release from the output directory.
495 if linux_config_exists; then 538 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
496 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 539 # this function.
497 KV_LOCAL="${KV_LOCAL//\"/}" 540 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
541 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
542 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
543 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
544 else
545 KV_LOCAL=
546 fi
498 547
499 # For things like git that can append extra stuff: 548 # KV_LOCAL currently contains the full release; discard the first bits.
500 [ -e ${KV_DIR}/scripts/setlocalversion ] && 549 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
501 linux_chkconfig_builtin LOCALVERSION_AUTO && 550
502 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 551 # If the updated local version was not changed, the tree is not prepared.
552 # Clear out KV_LOCAL in that case.
553 # TODO: this does not detect a change in the localversion part between
554 # kernel.release and the value that would be generated.
555 if [ "$KV_LOCAL" = "$tmplocal" ]; then
556 KV_LOCAL=
557 else
558 KV_LOCAL=$tmplocal
503 fi 559 fi
504 560
505 # And we should set KV_FULL to the full expanded version 561 # And we should set KV_FULL to the full expanded version
506 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 562 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
507 563
516# It gets the version of the current running kernel and the result is the same as get_version() if the 572# 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. 573# function can find the sources.
518get_running_version() { 574get_running_version() {
519 KV_FULL=$(uname -r) 575 KV_FULL=$(uname -r)
520 576
577 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
578 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
579 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
580 unset KV_FULL
581 get_version
582 return $?
521 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 583 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
522 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 584 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
523 unset KV_FULL 585 unset KV_FULL
524 get_version 586 get_version
525 return $? 587 return $?
526 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then 588 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
527 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build) 589 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
528 unset KV_FULL 590 unset KV_FULL
529 get_version 591 get_version
530 return $? 592 return $?
531 else 593 else
594 # This handles a variety of weird kernel versions. Make sure to update
595 # tests/linux-info:get_running_version.sh if you want to change this.
596 local kv_full=${KV_FULL//[-+_]*}
532 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 597 KV_MAJOR=$(get_version_component_range 1 ${kv_full})
533 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 598 KV_MINOR=$(get_version_component_range 2 ${kv_full})
534 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 599 KV_PATCH=$(get_version_component_range 3 ${kv_full})
535 KV_PATCH=${KV_PATCH//-*} 600 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}${KV_PATCH:+.${KV_PATCH}}}"
536 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 601 : ${KV_PATCH:=0}
537 && KV_EXTRA="-${KV_FULL#*-}"
538 fi 602 fi
539 return 0 603 return 0
604}
605
606# This next function is named with the eclass prefix to avoid conflicts with
607# some old versionator-like eclass functions.
608
609# @FUNCTION: linux-info_get_any_version
610# @DESCRIPTION:
611# This attempts to find the version of the sources, and otherwise falls back to
612# the version of the running kernel.
613linux-info_get_any_version() {
614 get_version
615 if [[ $? -ne 0 ]]; then
616 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
617 get_running_version
618 fi
540} 619}
541 620
542 621
543# ebuild check functions 622# ebuild check functions
544# --------------------------------------- 623# ---------------------------------------
549check_kernel_built() { 628check_kernel_built() {
550 # if we haven't determined the version yet, we need to 629 # if we haven't determined the version yet, we need to
551 require_configured_kernel 630 require_configured_kernel
552 get_version 631 get_version
553 632
633 local versionh_path
634 if kernel_is -ge 3 7; then
635 versionh_path="include/generated/uapi/linux/version.h"
636 else
637 versionh_path="include/linux/version.h"
638 fi
639
554 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 640 if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
555 then 641 then
556 eerror "These sources have not yet been prepared." 642 eerror "These sources have not yet been prepared."
557 eerror "We cannot build against an unprepared tree." 643 eerror "We cannot build against an unprepared tree."
558 eerror "To resolve this, please type the following:" 644 eerror "To resolve this, please type the following:"
559 eerror 645 eerror
572check_modules_supported() { 658check_modules_supported() {
573 # if we haven't determined the version yet, we need too. 659 # if we haven't determined the version yet, we need too.
574 require_configured_kernel 660 require_configured_kernel
575 get_version 661 get_version
576 662
577 if ! linux_chkconfig_builtin "MODULES" 663 if ! linux_chkconfig_builtin "MODULES"; then
578 then
579 eerror "These sources do not support loading external modules." 664 eerror "These sources do not support loading external modules."
580 eerror "to be able to use this module please enable \"Loadable modules support\"" 665 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." 666 eerror "in your kernel, recompile and then try merging this module again."
582 die "No support for external modules in ${KV_FULL} config" 667 die "No support for external modules in ${KV_FULL} config"
583 fi 668 fi
586# @FUNCTION: check_extra_config 671# @FUNCTION: check_extra_config
587# @DESCRIPTION: 672# @DESCRIPTION:
588# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e. 673# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
589# the prefix ~ is not used) doesn't satisfy the directive. 674# the prefix ~ is not used) doesn't satisfy the directive.
590check_extra_config() { 675check_extra_config() {
591 local config negate die error reworkmodulenames 676 local config negate die error reworkmodulenames
592 local soft_errors_count=0 hard_errors_count=0 config_required=0 677 local soft_errors_count=0 hard_errors_count=0 config_required=0
678 # store the value of the QA check, because otherwise we won't catch usages
679 # after if check_extra_config is called AND other direct calls are done
680 # later.
681 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
593 682
594 # if we haven't determined the version yet, we need to 683 # if we haven't determined the version yet, we need to
595 get_version 684 linux-info_get_any_version
596 685
597 # Determine if we really need a .config. The only time when we don't need 686 # 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 "~". 687 # one is when all of the CONFIG_CHECK options are prefixed with "~".
599 for config in ${CONFIG_CHECK} 688 for config in ${CONFIG_CHECK}; do
600 do
601 if [[ "${config:0:1}" != "~" ]]; then 689 if [[ "${config:0:1}" != "~" ]]; then
602 config_required=1 690 config_required=1
603 break 691 break
604 fi 692 fi
605 done 693 done
608 # In the case where we don't require a .config, we can now bail out 696 # 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 697 # if the user has no .config as there is nothing to do. Otherwise
610 # code later will cause a failure due to missing .config. 698 # code later will cause a failure due to missing .config.
611 if ! linux_config_exists; then 699 if ! linux_config_exists; then
612 ewarn "Unable to check for the following kernel config options due" 700 ewarn "Unable to check for the following kernel config options due"
613 ewarn "to absence of any configured kernel sources:" 701 ewarn "to absence of any configured kernel sources or compiled"
702 ewarn "config:"
614 for config in ${CONFIG_CHECK}; do 703 for config in ${CONFIG_CHECK}; do
704 local_error="ERROR_${config#\~}"
705 msg="${!local_error}"
706 if [[ "x${msg}" == "x" ]]; then
707 local_error="WARNING_${config#\~}"
708 msg="${!local_error}"
709 fi
615 ewarn " - ${config#\~}" 710 ewarn " - ${config#\~}${msg:+ - }${msg}"
616 done 711 done
617 ewarn "You're on your own to make sure they are set if needed." 712 ewarn "You're on your own to make sure they are set if needed."
713 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
618 return 0 714 return 0
619 fi 715 fi
620 else 716 else
621 require_configured_kernel 717 require_configured_kernel
622 fi 718 fi
699 if [[ ${hard_errors_count} > 0 ]]; then 795 if [[ ${hard_errors_count} > 0 ]]; then
700 eerror "Please check to make sure these options are set correctly." 796 eerror "Please check to make sure these options are set correctly."
701 eerror "Failure to do so may cause unexpected problems." 797 eerror "Failure to do so may cause unexpected problems."
702 eerror "Once you have satisfied these options, please try merging" 798 eerror "Once you have satisfied these options, please try merging"
703 eerror "this package again." 799 eerror "this package again."
800 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
704 die "Incorrect kernel configuration options" 801 die "Incorrect kernel configuration options"
705 elif [[ ${soft_errors_count} > 0 ]]; then 802 elif [[ ${soft_errors_count} > 0 ]]; then
706 ewarn "Please check to make sure these options are set correctly." 803 ewarn "Please check to make sure these options are set correctly."
707 ewarn "Failure to do so may cause unexpected problems." 804 ewarn "Failure to do so may cause unexpected problems."
708 else 805 else
709 eend 0 806 eend 0
710 fi 807 fi
808 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
711} 809}
712 810
713check_zlibinflate() { 811check_zlibinflate() {
714 # if we haven't determined the version yet, we need to 812 # if we haven't determined the version yet, we need to
715 require_configured_kernel 813 require_configured_kernel
786# @FUNCTION: linux-info_pkg_setup 884# @FUNCTION: linux-info_pkg_setup
787# @DESCRIPTION: 885# @DESCRIPTION:
788# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured 886# 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) 887# to support the options specified in CONFIG_CHECK (if not null)
790linux-info_pkg_setup() { 888linux-info_pkg_setup() {
791 get_version 889 linux-info_get_any_version
792 if [[ $rc -ne 0 ]]; then
793 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
794 get_running_version
795 fi
796 890
797 if kernel_is 2 4; then 891 if kernel_is 2 4; then
798 if [ "$( gcc-major-version )" -eq "4" ] ; then 892 if [ "$( gcc-major-version )" -eq "4" ] ; then
799 echo 893 echo
800 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with" 894 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"

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