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Revision 1.56 Revision 1.89
1# Copyright 1999-2006 Gentoo Foundation 1# Copyright 1999-2006 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 1.56 2008/10/31 22:01:32 dsd Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.89 2011/08/18 14:58:57 vapier Exp $
4# 4#
5# Original author: John Mylchreest <johnm@gentoo.org> 5# Original author: John Mylchreest <johnm@gentoo.org>
6# Maintainer: kernel-misc@gentoo.org 6# Maintainer: kernel-misc@gentoo.org
7# 7#
8# Please direct your bugs to the current eclass maintainer :) 8# Please direct your bugs to the current eclass maintainer :)
11# @MAINTAINER: 11# @MAINTAINER:
12# kernel-misc@gentoo.org 12# kernel-misc@gentoo.org
13# @BLURB: eclass used for accessing kernel related information 13# @BLURB: eclass used for accessing kernel related information
14# @DESCRIPTION: 14# @DESCRIPTION:
15# This eclass is used as a central eclass for accessing kernel 15# This eclass is used as a central eclass for accessing kernel
16# related information for sources already installed. 16# related information for source or binary already installed.
17# It is vital for linux-mod.eclass to function correctly, and is split 17# It is vital for linux-mod.eclass to function correctly, and is split
18# out so that any ebuild behaviour "templates" are abstracted out 18# out so that any ebuild behaviour "templates" are abstracted out
19# using additional eclasses. 19# using additional eclasses.
20#
21# "kernel config" in this file means:
22# 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 24
21# A Couple of env vars are available to effect usage of this eclass 25# A Couple of env vars are available to effect usage of this eclass
22# These are as follows: 26# These are as follows:
23 27
24# @ECLASS-VARIABLE: KERNEL_DIR 28# @ECLASS-VARIABLE: KERNEL_DIR
37# prepending it with an exclamation mark (!). 41# prepending it with an exclamation mark (!).
38# 42#
39# e.g.: CONFIG_CHECK="!MTRR" 43# e.g.: CONFIG_CHECK="!MTRR"
40# 44#
41# To simply warn about a missing option, prepend a '~'. 45# To simply warn about a missing option, prepend a '~'.
46# It may be combined with '!'.
47#
48# 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
50# without the option.
51#
52# This is to allow usage of binary kernels, and minimal systems without kernel
53# sources.
42 54
43# @ECLASS-VARIABLE: ERROR_<CFG> 55# @ECLASS-VARIABLE: ERROR_<CFG>
44# @DESCRIPTION: 56# @DESCRIPTION:
45# A string containing the error message to display when the check against CONFIG_CHECK 57# A string containing the error message to display when the check against CONFIG_CHECK
46# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK. 58# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
92# And to ensure all the weirdness with crosscompile 104# And to ensure all the weirdness with crosscompile
93inherit toolchain-funcs versionator 105inherit toolchain-funcs versionator
94 106
95EXPORT_FUNCTIONS pkg_setup 107EXPORT_FUNCTIONS pkg_setup
96 108
97DEPEND="kernel_linux? ( virtual/linux-sources )" 109DEPEND=""
98RDEPEND="" 110RDEPEND=""
99 111
100# Overwritable environment Var's 112# Overwritable environment Var's
101# --------------------------------------- 113# ---------------------------------------
102KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 114KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
134 esac 146 esac
135 [ -n "${outputmsg}" ] && ${type} "${outputmsg}" 147 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
136} 148}
137 149
138qeinfo() { qout einfo "${@}" ; } 150qeinfo() { qout einfo "${@}" ; }
151qewarn() { qout ewarn "${@}" ; }
139qeerror() { qout eerror "${@}" ; } 152qeerror() { qout eerror "${@}" ; }
140 153
141# File Functions 154# File Functions
142# --------------------------------------- 155# ---------------------------------------
143 156
144# @FUNCTION: getfilevar 157# @FUNCTION: getfilevar
145# @USAGE: variable configfile 158# @USAGE: variable configfile
146# @RETURN: the value of the variable 159# @RETURN: the value of the variable
147# @DESCRIPTION: 160# @DESCRIPTION:
148# It detects the value of the variable defined in the file configfile 161# It detects the value of the variable defined in the file configfile. This is
162# done by including the configfile, and printing the variable with Make.
163# It WILL break if your makefile has missing dependencies!
149getfilevar() { 164getfilevar() {
150local ERROR workingdir basefname basedname myARCH="${ARCH}" 165local ERROR basefname basedname myARCH="${ARCH}"
151 ERROR=0 166 ERROR=0
152 167
153 [ -z "${1}" ] && ERROR=1 168 [ -z "${1}" ] && ERROR=1
154 [ ! -f "${2}" ] && ERROR=1 169 [ ! -f "${2}" ] && ERROR=1
155 170
157 then 172 then
158 echo -e "\n" 173 echo -e "\n"
159 eerror "getfilevar requires 2 variables, with the second a valid file." 174 eerror "getfilevar requires 2 variables, with the second a valid file."
160 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 175 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
161 else 176 else
162 workingdir="${PWD}"
163 basefname="$(basename ${2})" 177 basefname="$(basename ${2})"
164 basedname="$(dirname ${2})" 178 basedname="$(dirname ${2})"
165 unset ARCH 179 unset ARCH
166 180
167 cd "${basedname}"
168 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \ 181 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
169 make M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null 182 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
170 cd "${workingdir}"
171 183
172 ARCH=${myARCH} 184 ARCH=${myARCH}
173 fi 185 fi
174} 186}
175 187
188# @FUNCTION: getfilevar_noexec
189# @USAGE: variable configfile
190# @RETURN: the value of the variable
191# @DESCRIPTION:
192# It detects the value of the variable defined in the file configfile.
193# This is done with sed matching an expression only. If the variable is defined,
194# you will run into problems. See getfilevar for those cases.
195getfilevar_noexec() {
196 local ERROR basefname basedname mycat myARCH="${ARCH}"
197 ERROR=0
198 mycat='cat'
199
200 [ -z "${1}" ] && ERROR=1
201 [ ! -f "${2}" ] && ERROR=1
202 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
203
204 if [ "${ERROR}" = 1 ]
205 then
206 echo -e "\n"
207 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
208 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
209 else
210 ${mycat} "${2}" | \
211 sed -n \
212 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
213 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
214 s,[[:space:]]*\$,,g ;
215 p
216 }"
217 fi
218}
219
220# @PRIVATE-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
221# @DESCRIPTION:
222# This is only set if one of the linux_config_*exists functions has been called.
223# We use it for a QA warning that the check for a config has not been performed,
224# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
225# config is available at all.
226_LINUX_CONFIG_EXISTS_DONE=
227
228linux_config_qa_check() {
229 local f="$1"
230 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
231 ewarn "QA: You called $f before any linux_config_exists!"
232 ewarn "QA: The return value of $f will NOT guaranteed later!"
233 fi
234}
235
236# @FUNCTION: linux_config_src_exists
237# @RETURN: true or false
238# @DESCRIPTION:
239# It returns true if .config exists in a build directory otherwise false
240linux_config_src_exists() {
241 export _LINUX_CONFIG_EXISTS_DONE=1
242 [ -s "${KV_OUT_DIR}/.config" ]
243}
244
245# @FUNCTION: linux_config_bin_exists
246# @RETURN: true or false
247# @DESCRIPTION:
248# It returns true if .config exists in /proc, otherwise false
249linux_config_bin_exists() {
250 export _LINUX_CONFIG_EXISTS_DONE=1
251 [ -s "/proc/config.gz" ]
252}
176 253
177# @FUNCTION: linux_config_exists 254# @FUNCTION: linux_config_exists
178# @RETURN: true or false 255# @RETURN: true or false
179# @DESCRIPTION: 256# @DESCRIPTION:
180# It returns true if .config exists otherwise false 257# It returns true if .config exists otherwise false
258#
259# This function MUST be checked before using any of the linux_chkconfig_*
260# functions.
181linux_config_exists() { 261linux_config_exists() {
182 [ -s "${KV_OUT_DIR}/.config" ] 262 linux_config_src_exists || linux_config_bin_exists
183} 263}
184 264
185# @FUNCTION: require_configured_kernel 265# @FUNCTION: require_configured_kernel
186# @DESCRIPTION: 266# @DESCRIPTION:
187# This function verifies that the current kernel is configured (it checks against the existence of .config) 267# This function verifies that the current kernel is configured (it checks against the existence of .config)
188# otherwise it dies. 268# otherwise it dies.
189require_configured_kernel() { 269require_configured_kernel() {
190 if ! linux_config_exists; then 270 if ! linux_config_src_exists; then
191 qeerror "Could not find a usable .config in the kernel source directory." 271 qeerror "Could not find a usable .config in the kernel source directory."
192 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources." 272 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
193 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that" 273 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
194 qeerror "it points to the necessary object directory so that it might find .config." 274 qeerror "it points to the necessary object directory so that it might find .config."
195 die "Kernel not configured; no .config found in ${KV_OUT_DIR}" 275 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
198 278
199# @FUNCTION: linux_chkconfig_present 279# @FUNCTION: linux_chkconfig_present
200# @USAGE: option 280# @USAGE: option
201# @RETURN: true or false 281# @RETURN: true or false
202# @DESCRIPTION: 282# @DESCRIPTION:
203# It checks that CONFIG_<option>=y or CONFIG_<option>=n is present in the current kernel .config 283# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
284# If linux_config_exists returns false, the results of this are UNDEFINED. You
285# MUST call linux_config_exists first.
204linux_chkconfig_present() { 286linux_chkconfig_present() {
287 linux_config_qa_check linux_chkconfig_present
205local RESULT 288 local RESULT
206 require_configured_kernel 289 local config
290 config="${KV_OUT_DIR}/.config"
291 [ ! -f "${config}" ] && config="/proc/config.gz"
207 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 292 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
208 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 293 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
209} 294}
210 295
211# @FUNCTION: linux_chkconfig_module 296# @FUNCTION: linux_chkconfig_module
212# @USAGE: option 297# @USAGE: option
213# @RETURN: true or false 298# @RETURN: true or false
214# @DESCRIPTION: 299# @DESCRIPTION:
215# It checks that CONFIG_<option>=m is present in the current kernel .config 300# It checks that CONFIG_<option>=m is present in the current kernel .config
301# If linux_config_exists returns false, the results of this are UNDEFINED. You
302# MUST call linux_config_exists first.
216linux_chkconfig_module() { 303linux_chkconfig_module() {
304 linux_config_qa_check linux_chkconfig_module
217local RESULT 305 local RESULT
218 require_configured_kernel 306 local config
307 config="${KV_OUT_DIR}/.config"
308 [ ! -f "${config}" ] && config="/proc/config.gz"
219 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 309 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
220 [ "${RESULT}" = "m" ] && return 0 || return 1 310 [ "${RESULT}" = "m" ] && return 0 || return 1
221} 311}
222 312
223# @FUNCTION: linux_chkconfig_builtin 313# @FUNCTION: linux_chkconfig_builtin
224# @USAGE: option 314# @USAGE: option
225# @RETURN: true or false 315# @RETURN: true or false
226# @DESCRIPTION: 316# @DESCRIPTION:
227# It checks that CONFIG_<option>=y is present in the current kernel .config 317# It checks that CONFIG_<option>=y is present in the current kernel .config
318# If linux_config_exists returns false, the results of this are UNDEFINED. You
319# MUST call linux_config_exists first.
228linux_chkconfig_builtin() { 320linux_chkconfig_builtin() {
321 linux_config_qa_check linux_chkconfig_builtin
229local RESULT 322 local RESULT
230 require_configured_kernel 323 local config
324 config="${KV_OUT_DIR}/.config"
325 [ ! -f "${config}" ] && config="/proc/config.gz"
231 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 326 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
232 [ "${RESULT}" = "y" ] && return 0 || return 1 327 [ "${RESULT}" = "y" ] && return 0 || return 1
233} 328}
234 329
235# @FUNCTION: linux_chkconfig_string 330# @FUNCTION: linux_chkconfig_string
236# @USAGE: option 331# @USAGE: option
237# @RETURN: CONFIG_<option> 332# @RETURN: CONFIG_<option>
238# @DESCRIPTION: 333# @DESCRIPTION:
239# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel). 334# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
335# If linux_config_exists returns false, the results of this are UNDEFINED. You
336# MUST call linux_config_exists first.
240linux_chkconfig_string() { 337linux_chkconfig_string() {
241 require_configured_kernel 338 linux_config_qa_check linux_chkconfig_string
339 local config
340 config="${KV_OUT_DIR}/.config"
341 [ ! -f "${config}" ] && config="/proc/config.gz"
242 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 342 getfilevar_noexec "CONFIG_${1}" "${config}"
243} 343}
244 344
245# Versioning Functions 345# Versioning Functions
246# --------------------------------------- 346# ---------------------------------------
247 347
263 363
264# got the jist yet? 364# got the jist yet?
265 365
266kernel_is() { 366kernel_is() {
267 # if we haven't determined the version yet, we need to. 367 # if we haven't determined the version yet, we need to.
268 get_version 368 linux-info_get_any_version
369
269 local operator test value x=0 y=0 z=0 370 local operator testagainst value x=0 y=0 z=0
270 371
271 case ${1} in 372 case ${1} in
272 lt) operator="-lt"; shift;; 373 -lt|lt) operator="-lt"; shift;;
273 gt) operator="-gt"; shift;; 374 -gt|gt) operator="-gt"; shift;;
274 le) operator="-le"; shift;; 375 -le|le) operator="-le"; shift;;
275 ge) operator="-ge"; shift;; 376 -ge|ge) operator="-ge"; shift;;
276 eq) operator="-eq"; shift;; 377 -eq|eq) operator="-eq"; shift;;
277 *) operator="-eq";; 378 *) operator="-eq";;
278 esac 379 esac
279 380
280 for x in ${@}; do 381 for x in ${@}; do
281 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done 382 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
282 value="${value}${x}" 383 value="${value}${x}"
283 z=$((${z} + 1)) 384 z=$((${z} + 1))
284 385
285 case ${z} in 386 case ${z} in
286 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done; 387 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do testagainst="${testagainst}0"; done;
287 test="${test}${KV_MAJOR}";; 388 testagainst="${testagainst}${KV_MAJOR}";;
288 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done; 389 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do testagainst="${testagainst}0"; done;
289 test="${test}${KV_MINOR}";; 390 testagainst="${testagainst}${KV_MINOR}";;
290 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 391 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do testagainst="${testagainst}0"; done;
291 test="${test}${KV_PATCH}";; 392 testagainst="${testagainst}${KV_PATCH}";;
292 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 393 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
293 esac 394 esac
294 done 395 done
295 396
296 [ ${test} ${operator} ${value} ] && return 0 || return 1 397 [ "${testagainst}" ${operator} "${value}" ] && return 0 || return 1
297} 398}
298 399
299get_localversion() { 400get_localversion() {
300 local lv_list i x 401 local lv_list i x
301 402
309 done 410 done
310 x=${x/ /} 411 x=${x/ /}
311 echo ${x} 412 echo ${x}
312} 413}
313 414
415# Check if the Makefile is valid for direct parsing.
416# Check status results:
417# - PASS, use 'getfilevar' to extract values
418# - FAIL, use 'getfilevar_noexec' to extract values
419# The check may fail if:
420# - make is not present
421# - corruption exists in the kernel makefile
422get_makefile_extract_function() {
423 local a='' b='' mkfunc='getfilevar'
424 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
425 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
426 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
427 echo "${mkfunc}"
428}
429
430# internal variable, so we know to only print the warning once
431get_version_warning_done=
432
314# @FUNCTION: get_version 433# @FUNCTION: get_version
315# @DESCRIPTION: 434# @DESCRIPTION:
316# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable 435# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
317# (if KV_FULL is already set it does nothing). 436# (if KV_FULL is already set it does nothing).
318# 437#
320# 439#
321# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid 440# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
322# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the 441# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
323# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build). 442# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
324get_version() { 443get_version() {
325 local kbuild_output 444 local kbuild_output mkfunc tmplocal
326 445
327 # no need to execute this twice assuming KV_FULL is populated. 446 # no need to execute this twice assuming KV_FULL is populated.
328 # we can force by unsetting KV_FULL 447 # we can force by unsetting KV_FULL
329 [ -n "${KV_FULL}" ] && return 0 448 [ -n "${KV_FULL}" ] && return 0
330 449
331 # if we dont know KV_FULL, then we need too. 450 # if we dont know KV_FULL, then we need too.
332 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 451 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
333 unset KV_DIR 452 unset KV_DIR
334 453
335 # KV_DIR will contain the full path to the sources directory we should use 454 # KV_DIR will contain the full path to the sources directory we should use
455 [ -z "${get_version_warning_done}" ] && \
336 qeinfo "Determining the location of the kernel source code" 456 qeinfo "Determining the location of the kernel source code"
337 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 457 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
338 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 458 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
339 459
340 if [ -z "${KV_DIR}" ] 460 if [ -z "${KV_DIR}" ]
341 then 461 then
462 if [ -z "${get_version_warning_done}" ]; then
463 get_version_warning_done=1
342 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 464 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
343 qeinfo "This package requires Linux sources." 465 #qeinfo "This package requires Linux sources."
344 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 466 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
345 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 467 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
346 qeinfo "(or the kernel you wish to build against)." 468 qeinfo "(or the kernel you wish to build against)."
347 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 469 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
348 else 470 else
349 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 471 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
472 fi
350 fi 473 fi
351 return 1 474 return 1
352 fi 475 fi
353 476
477 if [ -z "${get_version_warning_done}" ]; then
354 qeinfo "Found kernel source directory:" 478 qeinfo "Found kernel source directory:"
355 qeinfo " ${KV_DIR}" 479 qeinfo " ${KV_DIR}"
480 fi
356 481
357 if [ ! -s "${KV_DIR}/Makefile" ] 482 if [ ! -s "${KV_DIR}/Makefile" ]
358 then 483 then
484 if [ -z "${get_version_warning_done}" ]; then
485 get_version_warning_done=1
359 qeerror "Could not find a Makefile in the kernel source directory." 486 qeerror "Could not find a Makefile in the kernel source directory."
360 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 487 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
488 fi
361 return 1 489 return 1
362 fi 490 fi
363 491
364 # OK so now we know our sources directory, but they might be using 492 # OK so now we know our sources directory, but they might be using
365 # KBUILD_OUTPUT, and we need this for .config and localversions-* 493 # KBUILD_OUTPUT, and we need this for .config and localversions-*
366 # so we better find it eh? 494 # so we better find it eh?
367 # do we pass KBUILD_OUTPUT on the CLI? 495 # do we pass KBUILD_OUTPUT on the CLI?
368 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 496 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
369 497
498 # keep track of it
499 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
500
501 # Decide the function used to extract makefile variables.
502 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
503
370 # And if we didn't pass it, we can take a nosey in the Makefile 504 # And if we didn't pass it, we can take a nosey in the Makefile
371 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 505 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
372 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 506 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
373 507
374 # And contrary to existing functions I feel we shouldn't trust the 508 # And contrary to existing functions I feel we shouldn't trust the
375 # directory name to find version information as this seems insane. 509 # directory name to find version information as this seems insane.
376 # so we parse ${KV_DIR}/Makefile 510 # so we parse ${KERNEL_MAKEFILE}
377 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 511 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
378 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 512 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
379 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 513 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
380 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 514 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
381 515
382 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 516 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
383 then 517 then
518 if [ -z "${get_version_warning_done}" ]; then
519 get_version_warning_done=1
384 qeerror "Could not detect kernel version." 520 qeerror "Could not detect kernel version."
385 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 521 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
522 fi
386 return 1 523 return 1
387 fi 524 fi
388 525
389 # and in newer versions we can also pull LOCALVERSION if it is set. 526 # and in newer versions we can also pull LOCALVERSION if it is set.
390 # but before we do this, we need to find if we use a different object directory. 527 # but before we do this, we need to find if we use a different object directory.
391 # This *WILL* break if the user is using localversions, but we assume it was 528 # This *WILL* break if the user is using localversions, but we assume it was
392 # caught before this if they are. 529 # caught before this if they are.
393 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
394 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}" 530 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
395 531
396 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 532 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
397 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 533 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
398 if [ -n "${KV_OUT_DIR}" ]; 534 if [ -n "${KV_OUT_DIR}" ];
399 then 535 then
400 qeinfo "Found kernel object directory:" 536 qeinfo "Found kernel object directory:"
401 qeinfo " ${KV_OUT_DIR}" 537 qeinfo " ${KV_OUT_DIR}"
402
403 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
404 fi 538 fi
405 # and if we STILL have not got it, then we better just set it to KV_DIR 539 # and if we STILL have not got it, then we better just set it to KV_DIR
406 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 540 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
407 541
408 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 542 # Grab the kernel release from the output directory.
409 if linux_config_exists; then 543 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
410 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 544 # this function.
411 KV_LOCAL="${KV_LOCAL//\"/}" 545 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
546 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
547 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
548 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
549 else
550 KV_LOCAL=
551 fi
412 552
413 # For things like git that can append extra stuff: 553 # KV_LOCAL currently contains the full release; discard the first bits.
414 [ -e ${KV_DIR}/scripts/setlocalversion ] && 554 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
415 linux_chkconfig_builtin LOCALVERSION_AUTO && 555
416 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 556 # If the updated local version was not changed, the tree is not prepared.
557 # Clear out KV_LOCAL in that case.
558 # TODO: this does not detect a change in the localversion part between
559 # kernel.release and the value that would be generated.
560 if [ "$KV_LOCAL" = "$tmplocal" ]; then
561 KV_LOCAL=
562 else
563 KV_LOCAL=$tmplocal
417 fi 564 fi
418 565
419 # And we should set KV_FULL to the full expanded version 566 # And we should set KV_FULL to the full expanded version
420 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 567 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
421 568
430# It gets the version of the current running kernel and the result is the same as get_version() if the 577# It gets the version of the current running kernel and the result is the same as get_version() if the
431# function can find the sources. 578# function can find the sources.
432get_running_version() { 579get_running_version() {
433 KV_FULL=$(uname -r) 580 KV_FULL=$(uname -r)
434 581
582 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
583 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
584 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
585 unset KV_FULL
586 get_version
587 return $?
435 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 588 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
436 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 589 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
437 unset KV_FULL 590 unset KV_FULL
438 get_version 591 get_version
439 return $? 592 return $?
440 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then 593 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
443 get_version 596 get_version
444 return $? 597 return $?
445 else 598 else
446 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 599 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
447 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 600 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
448 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 601 KV_PATCH=$(get_version_component_range 3 ${KV_FULL})
449 KV_PATCH=${KV_PATCH//-*} 602 KV_PATCH=${KV_PATCH//-*}
450 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 603 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}}"
451 && KV_EXTRA="-${KV_FULL#*-}"
452 fi 604 fi
453 return 0 605 return 0
606}
607
608# This next function is named with the eclass prefix to avoid conflicts with
609# some old versionator-like eclass functions.
610
611# @FUNCTION: linux-info_get_any_version
612# @DESCRIPTION:
613# This attempts to find the version of the sources, and otherwise falls back to
614# the version of the running kernel.
615linux-info_get_any_version() {
616 get_version
617 if [[ $? -ne 0 ]]; then
618 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
619 get_running_version
620 fi
454} 621}
455 622
456 623
457# ebuild check functions 624# ebuild check functions
458# --------------------------------------- 625# ---------------------------------------
502# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e. 669# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
503# the prefix ~ is not used) doesn't satisfy the directive. 670# the prefix ~ is not used) doesn't satisfy the directive.
504check_extra_config() { 671check_extra_config() {
505 local config negate die error reworkmodulenames 672 local config negate die error reworkmodulenames
506 local soft_errors_count=0 hard_errors_count=0 config_required=0 673 local soft_errors_count=0 hard_errors_count=0 config_required=0
674 # store the value of the QA check, because otherwise we won't catch usages
675 # after if check_extra_config is called AND other direct calls are done
676 # later.
677 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
507 678
508 # if we haven't determined the version yet, we need to 679 # if we haven't determined the version yet, we need to
509 get_version 680 linux-info_get_any_version
510 681
511 # 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
512 # 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 "~".
513 for config in ${CONFIG_CHECK} 684 for config in ${CONFIG_CHECK}
514 do 685 do
521 if [[ ${config_required} == 0 ]]; then 692 if [[ ${config_required} == 0 ]]; then
522 # In the case where we don't require a .config, we can now bail out 693 # In the case where we don't require a .config, we can now bail out
523 # if the user has no .config as there is nothing to do. Otherwise 694 # if the user has no .config as there is nothing to do. Otherwise
524 # code later will cause a failure due to missing .config. 695 # code later will cause a failure due to missing .config.
525 if ! linux_config_exists; then 696 if ! linux_config_exists; then
697 ewarn "Unable to check for the following kernel config options due"
698 ewarn "to absence of any configured kernel sources or compiled"
699 ewarn "config:"
700 for config in ${CONFIG_CHECK}; do
701 local_error="ERROR_${config#\~}"
702 msg="${!local_error}"
703 if [[ "x${msg}" == "x" ]]; then
704 local_error="WARNING_${config#\~}"
705 msg="${!local_error}"
706 fi
707 ewarn " - ${config#\~}${msg:+ - }${msg}"
708 done
709 ewarn "You're on your own to make sure they are set if needed."
710 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
526 return 0 711 return 0
527 fi 712 fi
528 else 713 else
529 require_configured_kernel 714 require_configured_kernel
530 fi 715 fi
531 716
532 einfo "Checking for suitable kernel configuration options..." 717 einfo "Checking for suitable kernel configuration options..."
533 718
534 for config in ${CONFIG_CHECK} 719 for config in ${CONFIG_CHECK}
535 do 720 do
536 # if we specify any fatal, ensure we honor them 721 # if we specify any fatal, ensure we honor them
537 die=1 722 die=1
538 error=0 723 error=0
607 if [[ ${hard_errors_count} > 0 ]]; then 792 if [[ ${hard_errors_count} > 0 ]]; then
608 eerror "Please check to make sure these options are set correctly." 793 eerror "Please check to make sure these options are set correctly."
609 eerror "Failure to do so may cause unexpected problems." 794 eerror "Failure to do so may cause unexpected problems."
610 eerror "Once you have satisfied these options, please try merging" 795 eerror "Once you have satisfied these options, please try merging"
611 eerror "this package again." 796 eerror "this package again."
797 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
612 die "Incorrect kernel configuration options" 798 die "Incorrect kernel configuration options"
613 elif [[ ${soft_errors_count} > 0 ]]; then 799 elif [[ ${soft_errors_count} > 0 ]]; then
614 ewarn "Please check to make sure these options are set correctly." 800 ewarn "Please check to make sure these options are set correctly."
615 ewarn "Failure to do so may cause unexpected problems." 801 ewarn "Failure to do so may cause unexpected problems."
616 else 802 else
617 eend 0 803 eend 0
618 fi 804 fi
805 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
619} 806}
620 807
621check_zlibinflate() { 808check_zlibinflate() {
622 # if we haven't determined the version yet, we need to 809 # if we haven't determined the version yet, we need to
623 require_configured_kernel 810 require_configured_kernel
636 local DEFLATE 823 local DEFLATE
637 824
638 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 825 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
639 826
640 ebegin "checking ZLIB_INFLATE" 827 ebegin "checking ZLIB_INFLATE"
641 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 828 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
642 eend $? 829 eend $?
643 [ "$?" != 0 ] && die 830 [ "$?" != 0 ] && die
644 831
645 ebegin "checking ZLIB_DEFLATE" 832 ebegin "checking ZLIB_DEFLATE"
646 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 833 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
647 eend $? 834 eend $?
648 [ "$?" != 0 ] && die 835 [ "$?" != 0 ] && die
649 836
650 local LINENO_START 837 local LINENO_START
651 local LINENO_END 838 local LINENO_END
694# @FUNCTION: linux-info_pkg_setup 881# @FUNCTION: linux-info_pkg_setup
695# @DESCRIPTION: 882# @DESCRIPTION:
696# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured 883# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
697# to support the options specified in CONFIG_CHECK (if not null) 884# to support the options specified in CONFIG_CHECK (if not null)
698linux-info_pkg_setup() { 885linux-info_pkg_setup() {
699 get_version || die "Unable to calculate Linux Kernel version" 886 linux-info_get_any_version
700 887
701 if kernel_is 2 4; then 888 if kernel_is 2 4; then
702 if [ "$( gcc-major-version )" -eq "4" ] ; then 889 if [ "$( gcc-major-version )" -eq "4" ] ; then
703 echo 890 echo
704 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with" 891 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"

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