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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 1.98 2013/02/10 06:18:19 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 "${2}" ] && ERROR=1
173 175
179 else 181 else
180 basefname="$(basename ${2})" 182 basefname="$(basename ${2})"
181 basedname="$(dirname ${2})" 183 basedname="$(dirname ${2})"
182 unset ARCH 184 unset ARCH
183 185
186 # We use nonfatal because we want the caller to take care of things #373151
187 [[ ${EAPI:-0} == [0123] ]] && nonfatal() { "$@"; }
184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \ 188 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null 189 nonfatal emake -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
186 190
187 ARCH=${myARCH} 191 ARCH=${myARCH}
188 fi 192 fi
189} 193}
190 194
194# @DESCRIPTION: 198# @DESCRIPTION:
195# It detects the value of the variable defined in the file configfile. 199# It detects the value of the variable defined in the file configfile.
196# This is done with sed matching an expression only. If the variable is defined, 200# This is done with sed matching an expression only. If the variable is defined,
197# you will run into problems. See getfilevar for those cases. 201# you will run into problems. See getfilevar for those cases.
198getfilevar_noexec() { 202getfilevar_noexec() {
199 local ERROR basefname basedname mycat myARCH="${ARCH}" 203 local ERROR basefname basedname mycat myARCH="${ARCH}"
200 ERROR=0 204 ERROR=0
201 mycat='cat' 205 mycat='cat'
202 206
203 [ -z "${1}" ] && ERROR=1 207 [ -z "${1}" ] && ERROR=1
204 [ ! -f "${2}" ] && ERROR=1 208 [ ! -f "${2}" ] && ERROR=1
205 [ "${2#.gz}" != "${2}" ] && mycat='zcat' 209 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
206 210
207 if [ "${ERROR}" = 1 ] 211 if [ "${ERROR}" = 1 ]
208 then 212 then
209 echo -e "\n" 213 echo -e "\n"
210 eerror "getfilevar_noexec requires 2 variables, with the second a valid file." 214 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
211 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>" 215 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
212 else 216 else
213 ${mycat} "${2}" | \ 217 ${mycat} "${2}" | \
214 sed -n \ 218 sed -n \
215 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{ 219 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
216 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ; 220 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
217 s,[[:space:]]*\$,,g ; 221 s,[[:space:]]*\$,,g ;
218 p 222 p
219 }" 223 }"
220 fi 224 fi
221} 225}
222 226
227# @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
228# @INTERNAL
229# @DESCRIPTION:
230# This is only set if one of the linux_config_*exists functions has been called.
231# We use it for a QA warning that the check for a config has not been performed,
232# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
233# config is available at all.
234_LINUX_CONFIG_EXISTS_DONE=
235
236linux_config_qa_check() {
237 local f="$1"
238 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
239 ewarn "QA: You called $f before any linux_config_exists!"
240 ewarn "QA: The return value of $f will NOT guaranteed later!"
241 fi
242}
223 243
224# @FUNCTION: linux_config_src_exists 244# @FUNCTION: linux_config_src_exists
225# @RETURN: true or false 245# @RETURN: true or false
226# @DESCRIPTION: 246# @DESCRIPTION:
227# It returns true if .config exists in a build directory otherwise false 247# It returns true if .config exists in a build directory otherwise false
228linux_config_src_exists() { 248linux_config_src_exists() {
229 [ -s "${KV_OUT_DIR}/.config" ] 249 export _LINUX_CONFIG_EXISTS_DONE=1
250 [[ -n ${KV_OUT_DIR} && -s ${KV_OUT_DIR}/.config ]]
230} 251}
231 252
232# @FUNCTION: linux_config_bin_exists 253# @FUNCTION: linux_config_bin_exists
233# @RETURN: true or false 254# @RETURN: true or false
234# @DESCRIPTION: 255# @DESCRIPTION:
235# It returns true if .config exists in /proc, otherwise false 256# It returns true if .config exists in /proc, otherwise false
236linux_config_bin_exists() { 257linux_config_bin_exists() {
258 export _LINUX_CONFIG_EXISTS_DONE=1
237 [ -s "/proc/config.gz" ] 259 [[ -s /proc/config.gz ]]
238} 260}
239 261
240# @FUNCTION: linux_config_exists 262# @FUNCTION: linux_config_exists
241# @RETURN: true or false 263# @RETURN: true or false
242# @DESCRIPTION: 264# @DESCRIPTION:
244# 266#
245# This function MUST be checked before using any of the linux_chkconfig_* 267# This function MUST be checked before using any of the linux_chkconfig_*
246# functions. 268# functions.
247linux_config_exists() { 269linux_config_exists() {
248 linux_config_src_exists || linux_config_bin_exists 270 linux_config_src_exists || linux_config_bin_exists
271}
272
273# @FUNCTION: linux_config_path
274# @DESCRIPTION:
275# Echo the name of the config file to use. If none are found,
276# then return false.
277linux_config_path() {
278 if linux_config_src_exists; then
279 echo "${KV_OUT_DIR}/.config"
280 elif linux_config_bin_exists; then
281 echo "/proc/config.gz"
282 else
283 return 1
284 fi
249} 285}
250 286
251# @FUNCTION: require_configured_kernel 287# @FUNCTION: require_configured_kernel
252# @DESCRIPTION: 288# @DESCRIPTION:
253# This function verifies that the current kernel is configured (it checks against the existence of .config) 289# This function verifies that the current kernel is configured (it checks against the existence of .config)
268# @DESCRIPTION: 304# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config 305# 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 306# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first. 307# MUST call linux_config_exists first.
272linux_chkconfig_present() { 308linux_chkconfig_present() {
273local RESULT 309 linux_config_qa_check linux_chkconfig_present
274 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 310 [[ $(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 "${RESULT}" = "y" ] && return 0 || return 1
280} 311}
281 312
282# @FUNCTION: linux_chkconfig_module 313# @FUNCTION: linux_chkconfig_module
283# @USAGE: option 314# @USAGE: option
284# @RETURN: true or false 315# @RETURN: true or false
285# @DESCRIPTION: 316# @DESCRIPTION:
286# It checks that CONFIG_<option>=m is present in the current kernel .config 317# It checks that CONFIG_<option>=m is present in the current kernel .config
287# If linux_config_exists returns false, the results of this are UNDEFINED. You 318# If linux_config_exists returns false, the results of this are UNDEFINED. You
288# MUST call linux_config_exists first. 319# MUST call linux_config_exists first.
289linux_chkconfig_module() { 320linux_chkconfig_module() {
290local RESULT 321 linux_config_qa_check linux_chkconfig_module
291 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 322 [[ $(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} 323}
298 324
299# @FUNCTION: linux_chkconfig_builtin 325# @FUNCTION: linux_chkconfig_builtin
300# @USAGE: option 326# @USAGE: option
301# @RETURN: true or false 327# @RETURN: true or false
302# @DESCRIPTION: 328# @DESCRIPTION:
303# It checks that CONFIG_<option>=y is present in the current kernel .config 329# 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 330# If linux_config_exists returns false, the results of this are UNDEFINED. You
305# MUST call linux_config_exists first. 331# MUST call linux_config_exists first.
306linux_chkconfig_builtin() { 332linux_chkconfig_builtin() {
307local RESULT 333 linux_config_qa_check linux_chkconfig_builtin
308 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 334 [[ $(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} 335}
315 336
316# @FUNCTION: linux_chkconfig_string 337# @FUNCTION: linux_chkconfig_string
317# @USAGE: option 338# @USAGE: option
318# @RETURN: CONFIG_<option> 339# @RETURN: CONFIG_<option>
319# @DESCRIPTION: 340# @DESCRIPTION:
320# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel). 341# 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 342# If linux_config_exists returns false, the results of this are UNDEFINED. You
322# MUST call linux_config_exists first. 343# MUST call linux_config_exists first.
323linux_chkconfig_string() { 344linux_chkconfig_string() {
324 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 345 linux_config_qa_check linux_chkconfig_string
325 local config
326 config="${KV_OUT_DIR}/.config"
327 [ ! -f "${config}" ] && config="/proc/config.gz"
328 getfilevar_noexec "CONFIG_${1}" "${config}" 346 getfilevar_noexec "CONFIG_$1" "$(linux_config_path)"
329} 347}
330 348
331# Versioning Functions 349# Versioning Functions
332# --------------------------------------- 350# ---------------------------------------
333 351
345# kernel_is 2 6 returns true 363# kernel_is 2 6 returns true
346# kernel_is 2 6 8 returns false 364# kernel_is 2 6 8 returns false
347# kernel_is 2 6 9 returns true 365# kernel_is 2 6 9 returns true
348# @CODE 366# @CODE
349 367
350# got the jist yet? 368# Note: duplicated in kernel-2.eclass
351
352kernel_is() { 369kernel_is() {
353 # if we haven't determined the version yet, we need to. 370 # if we haven't determined the version yet, we need to.
354 get_version 371 linux-info_get_any_version
372
373 # Now we can continue
355 local operator test value x=0 y=0 z=0 374 local operator test value
356 375
357 case ${1} in 376 case ${1#-} in
358 lt) operator="-lt"; shift;; 377 lt) operator="-lt"; shift;;
359 gt) operator="-gt"; shift;; 378 gt) operator="-gt"; shift;;
360 le) operator="-le"; shift;; 379 le) operator="-le"; shift;;
361 ge) operator="-ge"; shift;; 380 ge) operator="-ge"; shift;;
362 eq) operator="-eq"; shift;; 381 eq) operator="-eq"; shift;;
363 *) operator="-eq";; 382 *) operator="-eq";;
364 esac 383 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.";; 384 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
379 esac 385
380 done 386 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
381 387 : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
382 [ ${test} ${operator} ${value} ] && return 0 || return 1 388 [ ${test} ${operator} ${value} ]
383} 389}
384 390
385get_localversion() { 391get_localversion() {
386 local lv_list i x 392 local lv_list i x
387 393
395 done 401 done
396 x=${x/ /} 402 x=${x/ /}
397 echo ${x} 403 echo ${x}
398} 404}
399 405
406# Check if the Makefile is valid for direct parsing.
407# Check status results:
408# - PASS, use 'getfilevar' to extract values
409# - FAIL, use 'getfilevar_noexec' to extract values
410# The check may fail if:
411# - make is not present
412# - corruption exists in the kernel makefile
413get_makefile_extract_function() {
414 local a='' b='' mkfunc='getfilevar'
415 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
416 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
417 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
418 echo "${mkfunc}"
419}
420
421# internal variable, so we know to only print the warning once
422get_version_warning_done=
423
400# @FUNCTION: get_version 424# @FUNCTION: get_version
401# @DESCRIPTION: 425# @DESCRIPTION:
402# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable 426# 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). 427# (if KV_FULL is already set it does nothing).
404# 428#
406# 430#
407# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid 431# 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 432# 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). 433# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
410get_version() { 434get_version() {
411 local kbuild_output 435 local kbuild_output mkfunc tmplocal
412 436
413 # no need to execute this twice assuming KV_FULL is populated. 437 # no need to execute this twice assuming KV_FULL is populated.
414 # we can force by unsetting KV_FULL 438 # we can force by unsetting KV_FULL
415 [ -n "${KV_FULL}" ] && return 0 439 [ -n "${KV_FULL}" ] && return 0
416 440
417 # if we dont know KV_FULL, then we need too. 441 # 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 442 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
419 unset KV_DIR 443 unset KV_DIR
420 444
421 # KV_DIR will contain the full path to the sources directory we should use 445 # KV_DIR will contain the full path to the sources directory we should use
446 [ -z "${get_version_warning_done}" ] && \
422 qeinfo "Determining the location of the kernel source code" 447 qeinfo "Determining the location of the kernel source code"
423 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 448 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
424 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 449 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
425 450
426 if [ -z "${KV_DIR}" ] 451 if [ -z "${KV_DIR}" ]
427 then 452 then
453 if [ -z "${get_version_warning_done}" ]; then
454 get_version_warning_done=1
428 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 455 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
429 qeinfo "This package requires Linux sources." 456 #qeinfo "This package requires Linux sources."
430 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 457 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
431 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 458 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
432 qeinfo "(or the kernel you wish to build against)." 459 qeinfo "(or the kernel you wish to build against)."
433 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 460 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
434 else 461 else
435 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 462 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
463 fi
436 fi 464 fi
437 return 1 465 return 1
438 fi 466 fi
439 467
468 if [ -z "${get_version_warning_done}" ]; then
440 qeinfo "Found kernel source directory:" 469 qeinfo "Found kernel source directory:"
441 qeinfo " ${KV_DIR}" 470 qeinfo " ${KV_DIR}"
471 fi
442 472
443 if [ ! -s "${KV_DIR}/Makefile" ] 473 if [ ! -s "${KV_DIR}/Makefile" ]
444 then 474 then
475 if [ -z "${get_version_warning_done}" ]; then
476 get_version_warning_done=1
445 qeerror "Could not find a Makefile in the kernel source directory." 477 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" 478 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
479 fi
447 return 1 480 return 1
448 fi 481 fi
449 482
450 # OK so now we know our sources directory, but they might be using 483 # OK so now we know our sources directory, but they might be using
451 # KBUILD_OUTPUT, and we need this for .config and localversions-* 484 # KBUILD_OUTPUT, and we need this for .config and localversions-*
452 # so we better find it eh? 485 # so we better find it eh?
453 # do we pass KBUILD_OUTPUT on the CLI? 486 # do we pass KBUILD_OUTPUT on the CLI?
454 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 487 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
455 488
489 # keep track of it
490 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
491
492 # Decide the function used to extract makefile variables.
493 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
494
456 # And if we didn't pass it, we can take a nosey in the Makefile 495 # And if we didn't pass it, we can take a nosey in the Makefile
457 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)" 496 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
458 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 497 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
459 498
460 # And contrary to existing functions I feel we shouldn't trust the 499 # And contrary to existing functions I feel we shouldn't trust the
461 # directory name to find version information as this seems insane. 500 # directory name to find version information as this seems insane.
462 # so we parse ${KV_DIR}/Makefile 501 # so we parse ${KERNEL_MAKEFILE}
463 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)" 502 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
464 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)" 503 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
465 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)" 504 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
466 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)" 505 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
467 506
468 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 507 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
469 then 508 then
509 if [ -z "${get_version_warning_done}" ]; then
510 get_version_warning_done=1
470 qeerror "Could not detect kernel version." 511 qeerror "Could not detect kernel version."
471 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 512 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
513 fi
472 return 1 514 return 1
473 fi 515 fi
474 516
475 # and in newer versions we can also pull LOCALVERSION if it is set. 517 # and in newer versions we can also pull LOCALVERSION if it is set.
476 # but before we do this, we need to find if we use a different object directory. 518 # but before we do this, we need to find if we use a different object directory.
477 # This *WILL* break if the user is using localversions, but we assume it was 519 # This *WILL* break if the user is using localversions, but we assume it was
478 # caught before this if they are. 520 # caught before this if they are.
479 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
480 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}" 521 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
481 522
482 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 523 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
483 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 524 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
484 if [ -n "${KV_OUT_DIR}" ]; 525 if [ -n "${KV_OUT_DIR}" ];
485 then 526 then
486 qeinfo "Found kernel object directory:" 527 qeinfo "Found kernel object directory:"
487 qeinfo " ${KV_OUT_DIR}" 528 qeinfo " ${KV_OUT_DIR}"
488
489 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
490 fi 529 fi
491 # and if we STILL have not got it, then we better just set it to KV_DIR 530 # and if we STILL have not got it, then we better just set it to KV_DIR
492 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 531 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
493 532
494 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 533 # Grab the kernel release from the output directory.
495 if linux_config_exists; then 534 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
496 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 535 # this function.
497 KV_LOCAL="${KV_LOCAL//\"/}" 536 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
537 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
538 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
539 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
540 else
541 KV_LOCAL=
542 fi
498 543
499 # For things like git that can append extra stuff: 544 # KV_LOCAL currently contains the full release; discard the first bits.
500 [ -e ${KV_DIR}/scripts/setlocalversion ] && 545 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
501 linux_chkconfig_builtin LOCALVERSION_AUTO && 546
502 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 547 # If the updated local version was not changed, the tree is not prepared.
548 # Clear out KV_LOCAL in that case.
549 # TODO: this does not detect a change in the localversion part between
550 # kernel.release and the value that would be generated.
551 if [ "$KV_LOCAL" = "$tmplocal" ]; then
552 KV_LOCAL=
553 else
554 KV_LOCAL=$tmplocal
503 fi 555 fi
504 556
505 # And we should set KV_FULL to the full expanded version 557 # And we should set KV_FULL to the full expanded version
506 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 558 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
507 559
516# It gets the version of the current running kernel and the result is the same as get_version() if the 568# 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. 569# function can find the sources.
518get_running_version() { 570get_running_version() {
519 KV_FULL=$(uname -r) 571 KV_FULL=$(uname -r)
520 572
573 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
574 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
575 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
576 unset KV_FULL
577 get_version
578 return $?
521 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 579 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
522 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 580 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
523 unset KV_FULL 581 unset KV_FULL
524 get_version 582 get_version
525 return $? 583 return $?
526 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then 584 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
527 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build) 585 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
528 unset KV_FULL 586 unset KV_FULL
529 get_version 587 get_version
530 return $? 588 return $?
531 else 589 else
590 # This handles a variety of weird kernel versions. Make sure to update
591 # tests/linux-info:get_running_version.sh if you want to change this.
592 local kv_full=${KV_FULL//[-+_]*}
532 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 593 KV_MAJOR=$(get_version_component_range 1 ${kv_full})
533 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 594 KV_MINOR=$(get_version_component_range 2 ${kv_full})
534 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 595 KV_PATCH=$(get_version_component_range 3 ${kv_full})
535 KV_PATCH=${KV_PATCH//-*} 596 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}${KV_PATCH:+.${KV_PATCH}}}"
536 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 597 : ${KV_PATCH:=0}
537 && KV_EXTRA="-${KV_FULL#*-}"
538 fi 598 fi
539 return 0 599 return 0
600}
601
602# This next function is named with the eclass prefix to avoid conflicts with
603# some old versionator-like eclass functions.
604
605# @FUNCTION: linux-info_get_any_version
606# @DESCRIPTION:
607# This attempts to find the version of the sources, and otherwise falls back to
608# the version of the running kernel.
609linux-info_get_any_version() {
610 get_version
611 if [[ $? -ne 0 ]]; then
612 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
613 get_running_version
614 fi
540} 615}
541 616
542 617
543# ebuild check functions 618# ebuild check functions
544# --------------------------------------- 619# ---------------------------------------
549check_kernel_built() { 624check_kernel_built() {
550 # if we haven't determined the version yet, we need to 625 # if we haven't determined the version yet, we need to
551 require_configured_kernel 626 require_configured_kernel
552 get_version 627 get_version
553 628
629 local versionh_path
630 if kernel_is -ge 3 7; then
631 versionh_path="include/generated/uapi/linux/version.h"
632 else
633 versionh_path="include/linux/version.h"
634 fi
635
554 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 636 if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
555 then 637 then
556 eerror "These sources have not yet been prepared." 638 eerror "These sources have not yet been prepared."
557 eerror "We cannot build against an unprepared tree." 639 eerror "We cannot build against an unprepared tree."
558 eerror "To resolve this, please type the following:" 640 eerror "To resolve this, please type the following:"
559 eerror 641 eerror
572check_modules_supported() { 654check_modules_supported() {
573 # if we haven't determined the version yet, we need too. 655 # if we haven't determined the version yet, we need too.
574 require_configured_kernel 656 require_configured_kernel
575 get_version 657 get_version
576 658
577 if ! linux_chkconfig_builtin "MODULES" 659 if ! linux_chkconfig_builtin "MODULES"; then
578 then
579 eerror "These sources do not support loading external modules." 660 eerror "These sources do not support loading external modules."
580 eerror "to be able to use this module please enable \"Loadable modules support\"" 661 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." 662 eerror "in your kernel, recompile and then try merging this module again."
582 die "No support for external modules in ${KV_FULL} config" 663 die "No support for external modules in ${KV_FULL} config"
583 fi 664 fi
586# @FUNCTION: check_extra_config 667# @FUNCTION: check_extra_config
587# @DESCRIPTION: 668# @DESCRIPTION:
588# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e. 669# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
589# the prefix ~ is not used) doesn't satisfy the directive. 670# the prefix ~ is not used) doesn't satisfy the directive.
590check_extra_config() { 671check_extra_config() {
591 local config negate die error reworkmodulenames 672 local config negate die error reworkmodulenames
592 local soft_errors_count=0 hard_errors_count=0 config_required=0 673 local soft_errors_count=0 hard_errors_count=0 config_required=0
674 # store the value of the QA check, because otherwise we won't catch usages
675 # after if check_extra_config is called AND other direct calls are done
676 # later.
677 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
593 678
594 # if we haven't determined the version yet, we need to 679 # if we haven't determined the version yet, we need to
595 get_version 680 linux-info_get_any_version
596 681
597 # Determine if we really need a .config. The only time when we don't need 682 # 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 "~". 683 # one is when all of the CONFIG_CHECK options are prefixed with "~".
599 for config in ${CONFIG_CHECK} 684 for config in ${CONFIG_CHECK}; do
600 do
601 if [[ "${config:0:1}" != "~" ]]; then 685 if [[ "${config:0:1}" != "~" ]]; then
602 config_required=1 686 config_required=1
603 break 687 break
604 fi 688 fi
605 done 689 done
608 # In the case where we don't require a .config, we can now bail out 692 # 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 693 # if the user has no .config as there is nothing to do. Otherwise
610 # code later will cause a failure due to missing .config. 694 # code later will cause a failure due to missing .config.
611 if ! linux_config_exists; then 695 if ! linux_config_exists; then
612 ewarn "Unable to check for the following kernel config options due" 696 ewarn "Unable to check for the following kernel config options due"
613 ewarn "to absence of any configured kernel sources:" 697 ewarn "to absence of any configured kernel sources or compiled"
698 ewarn "config:"
614 for config in ${CONFIG_CHECK}; do 699 for config in ${CONFIG_CHECK}; do
700 local_error="ERROR_${config#\~}"
701 msg="${!local_error}"
702 if [[ "x${msg}" == "x" ]]; then
703 local_error="WARNING_${config#\~}"
704 msg="${!local_error}"
705 fi
615 ewarn " - ${config#\~}" 706 ewarn " - ${config#\~}${msg:+ - }${msg}"
616 done 707 done
617 ewarn "You're on your own to make sure they are set if needed." 708 ewarn "You're on your own to make sure they are set if needed."
709 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
618 return 0 710 return 0
619 fi 711 fi
620 else 712 else
621 require_configured_kernel 713 require_configured_kernel
622 fi 714 fi
699 if [[ ${hard_errors_count} > 0 ]]; then 791 if [[ ${hard_errors_count} > 0 ]]; then
700 eerror "Please check to make sure these options are set correctly." 792 eerror "Please check to make sure these options are set correctly."
701 eerror "Failure to do so may cause unexpected problems." 793 eerror "Failure to do so may cause unexpected problems."
702 eerror "Once you have satisfied these options, please try merging" 794 eerror "Once you have satisfied these options, please try merging"
703 eerror "this package again." 795 eerror "this package again."
796 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
704 die "Incorrect kernel configuration options" 797 die "Incorrect kernel configuration options"
705 elif [[ ${soft_errors_count} > 0 ]]; then 798 elif [[ ${soft_errors_count} > 0 ]]; then
706 ewarn "Please check to make sure these options are set correctly." 799 ewarn "Please check to make sure these options are set correctly."
707 ewarn "Failure to do so may cause unexpected problems." 800 ewarn "Failure to do so may cause unexpected problems."
708 else 801 else
709 eend 0 802 eend 0
710 fi 803 fi
804 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
711} 805}
712 806
713check_zlibinflate() { 807check_zlibinflate() {
714 # if we haven't determined the version yet, we need to 808 # if we haven't determined the version yet, we need to
715 require_configured_kernel 809 require_configured_kernel
786# @FUNCTION: linux-info_pkg_setup 880# @FUNCTION: linux-info_pkg_setup
787# @DESCRIPTION: 881# @DESCRIPTION:
788# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured 882# 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) 883# to support the options specified in CONFIG_CHECK (if not null)
790linux-info_pkg_setup() { 884linux-info_pkg_setup() {
791 get_version 885 linux-info_get_any_version
792 if [[ $rc -ne 0 ]]; then
793 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
794 get_running_version
795 fi
796 886
797 if kernel_is 2 4; then 887 if kernel_is 2 4; then
798 if [ "$( gcc-major-version )" -eq "4" ] ; then 888 if [ "$( gcc-major-version )" -eq "4" ] ; then
799 echo 889 echo
800 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with" 890 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"

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