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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 1.55 2008/03/21 11:11:27 dsd Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.63 2009/09/06 23:04:37 robbat2 Exp $
4#
5# Description: This eclass is used as a central eclass for accessing kernel
6# related information for sources already installed.
7# It is vital for linux-mod to function correctly, and is split
8# out so that any ebuild behaviour "templates" are abstracted out
9# using additional eclasses.
10# 4#
11# Original author: John Mylchreest <johnm@gentoo.org> 5# Original author: John Mylchreest <johnm@gentoo.org>
12# Maintainer: kernel-misc@gentoo.org 6# Maintainer: kernel-misc@gentoo.org
13# 7#
14# Please direct your bugs to the current eclass maintainer :) 8# Please direct your bugs to the current eclass maintainer :)
15 9
10# @ECLASS: linux-info.eclass
11# @MAINTAINER:
12# kernel-misc@gentoo.org
13# @BLURB: eclass used for accessing kernel related information
14# @DESCRIPTION:
15# This eclass is used as a central eclass for accessing kernel
16# related information for source or binary already installed.
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
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.
24
16# 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
17# These are as follows: 26# These are as follows:
18# 27
19# Env Var Option Description 28# @ECLASS-VARIABLE: KERNEL_DIR
20# KERNEL_DIR <string> The directory containing kernel the target kernel 29# @DESCRIPTION:
21# sources. 30# A string containing the directory of the target kernel sources. The default value is
31# "/usr/src/linux"
32
33# @ECLASS-VARIABLE: CONFIG_CHECK
34# @DESCRIPTION:
22# CONFIG_CHECK <string> a list of .config options to check for before 35# A string containing a list of .config options to check for before
23# proceeding with the install. ie: CONFIG_CHECK="MTRR" 36# proceeding with the install.
37#
38# e.g.: CONFIG_CHECK="MTRR"
39#
24# You can also check that an option doesn't exist by 40# You can also check that an option doesn't exist by
25# prepending it with an exclamation mark (!). 41# prepending it with an exclamation mark (!).
42#
26# ie: CONFIG_CHECK="!MTRR" 43# e.g.: CONFIG_CHECK="!MTRR"
44#
27# To simply warn about a missing option, prepend a '~'. 45# To simply warn about a missing option, prepend a '~'.
28# ERROR_CFG <string> The error message to display when the above check 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.
54
55# @ECLASS-VARIABLE: ERROR_<CFG>
56# @DESCRIPTION:
57# A string containing the error message to display when the check against CONFIG_CHECK
29# fails. <CFG> should reference the appropriate option 58# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
30# as above. ie: ERROR_MTRR="MTRR exists in the .config 59#
31# but shouldn't!!" 60# e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
32# KBUILD_OUTPUT <string> This is passed on commandline, or can be set from 61
33# the kernel makefile. This contains the directory 62# @ECLASS-VARIABLE: KBUILD_OUTPUT
63# @DESCRIPTION:
64# A string passed on commandline, or set from the kernel makefile. It contains the directory
34# which is to be used as the kernel object directory. 65# which is to be used as the kernel object directory.
35 66
36# There are also a couple of variables which are set by this, and shouldn't be 67# There are also a couple of variables which are set by this, and shouldn't be
37# set by hand. These are as follows: 68# set by hand. These are as follows:
38# 69
39# Env Var Option Description 70# @ECLASS-VARIABLE: KV_FULL
40# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1 71# @DESCRIPTION:
41# KV_MAJOR <integer> The kernel major version. ie: 2 72# A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
42# KV_MINOR <integer> The kernel minor version. ie: 6 73
43# KV_PATCH <integer> The kernel patch version. ie: 9 74# @ECLASS-VARIABLE: KV_MAJOR
44# KV_EXTRA <string> The kernel EXTRAVERSION. ie: -gentoo 75# @DESCRIPTION:
45# KV_LOCAL <string> The kernel LOCALVERSION concatenation. ie: -johnm 76# A read-only variable. It's an integer containing the kernel major version. ie: 2
46# KV_DIR <string> The kernel source directory, will be null if 77
78# @ECLASS-VARIABLE: KV_MINOR
79# @DESCRIPTION:
80# A read-only variable. It's an integer containing the kernel minor version. ie: 6
81
82# @ECLASS-VARIABLE: KV_PATCH
83# @DESCRIPTION:
84# A read-only variable. It's an integer containing the kernel patch version. ie: 9
85
86# @ECLASS-VARIABLE: KV_EXTRA
87# @DESCRIPTION:
88# A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
89
90# @ECLASS-VARIABLE: KV_LOCAL
91# @DESCRIPTION:
92# A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
93
94# @ECLASS-VARIABLE: KV_DIR
95# @DESCRIPTION:
96# A read-only variable. It's a string containing the kernel source directory, will be null if
47# KERNEL_DIR is invalid. 97# KERNEL_DIR is invalid.
48# KV_OUT_DIR <string> The kernel object directory. will be KV_DIR unless 98
49# koutput is used. This should be used for referencing 99# @ECLASS-VARIABLE: KV_OUT_DIR
50# .config. 100# @DESCRIPTION:
101# 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.
103
104# @ECLASS-VARIABLE: I_KNOW_WHAT_I_AM_DOING
105# @DESCRIPTION:
106# Temporary variable for the migration to making linux-info non-fatal.
51 107
52# And to ensure all the weirdness with crosscompile 108# And to ensure all the weirdness with crosscompile
53inherit toolchain-funcs versionator 109inherit toolchain-funcs versionator
54 110
55EXPORT_FUNCTIONS pkg_setup 111EXPORT_FUNCTIONS pkg_setup
99qeerror() { qout eerror "${@}" ; } 155qeerror() { qout eerror "${@}" ; }
100 156
101# File Functions 157# File Functions
102# --------------------------------------- 158# ---------------------------------------
103 159
104# getfilevar accepts 2 vars as follows: 160# @FUNCTION: getfilevar
105# getfilevar <VARIABLE> <CONFIGFILE> 161# @USAGE: variable configfile
106 162# @RETURN: the value of the variable
163# @DESCRIPTION:
164# 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.
166# It WILL break if your makefile has missing dependencies!
107getfilevar() { 167getfilevar() {
108local ERROR workingdir basefname basedname myARCH="${ARCH}" 168local ERROR basefname basedname myARCH="${ARCH}"
109 ERROR=0 169 ERROR=0
110 170
111 [ -z "${1}" ] && ERROR=1 171 [ -z "${1}" ] && ERROR=1
112 [ ! -f "${2}" ] && ERROR=1 172 [ ! -f "${2}" ] && ERROR=1
113 173
115 then 175 then
116 echo -e "\n" 176 echo -e "\n"
117 eerror "getfilevar requires 2 variables, with the second a valid file." 177 eerror "getfilevar requires 2 variables, with the second a valid file."
118 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 178 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
119 else 179 else
120 workingdir="${PWD}"
121 basefname="$(basename ${2})" 180 basefname="$(basename ${2})"
122 basedname="$(dirname ${2})" 181 basedname="$(dirname ${2})"
123 unset ARCH 182 unset ARCH
124 183
125 cd "${basedname}"
126 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \ 184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
127 make M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null 185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
128 cd "${workingdir}"
129 186
130 ARCH=${myARCH} 187 ARCH=${myARCH}
131 fi 188 fi
132} 189}
133 190
191# @FUNCTION: getfilevar_noexec
192# @USAGE: variable configfile
193# @RETURN: the value of the variable
194# @DESCRIPTION:
195# 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# you will run into problems. See getfilevar for those cases.
198getfilevar_noexec() {
199 local ERROR basefname basedname mycat myARCH="${ARCH}"
200 ERROR=0
201 mycat='cat'
134 202
203 [ -z "${1}" ] && ERROR=1
204 [ ! -f "${2}" ] && ERROR=1
205 [ "${2#.gz}" != "${2}" ] && mycat='zcat'
206
207 if [ "${ERROR}" = 1 ]
208 then
209 echo -e "\n"
210 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
211 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
212 else
213 ${mycat} "${2}" | \
214 sed -n \
215 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
216 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
217 s,[[:space:]]*\$,,g ;
218 p
219 }"
220 fi
221}
222
223
224# @FUNCTION: linux_config_src_exists
225# @RETURN: true or false
226# @DESCRIPTION:
227# It returns true if .config exists in a build directory otherwise false
228linux_config_src_exists() {
229 [ -s "${KV_OUT_DIR}/.config" ]
230}
231
232# @FUNCTION: linux_config_bin_exists
233# @RETURN: true or false
234# @DESCRIPTION:
235# It returns true if .config exists in /proc, otherwise false
236linux_config_bin_exists() {
237 [ -s "/proc/config.gz" ]
238}
239
240# @FUNCTION: linux_config_exists
241# @RETURN: true or false
242# @DESCRIPTION:
243# It returns true if .config exists otherwise false
244#
245# This function MUST be checked before using any of the linux_chkconfig_*
246# functions.
135linux_config_exists() { 247linux_config_exists() {
136 [ -s "${KV_OUT_DIR}/.config" ] 248 linux_config_src_exists || linux_config_bin_exists
137} 249}
138 250
251# @FUNCTION: require_configured_kernel
252# @DESCRIPTION:
253# This function verifies that the current kernel is configured (it checks against the existence of .config)
254# otherwise it dies.
139require_configured_kernel() { 255require_configured_kernel() {
140 if ! linux_config_exists; then 256 if ! linux_config_src_exists; then
141 qeerror "Could not find a usable .config in the kernel source directory." 257 qeerror "Could not find a usable .config in the kernel source directory."
142 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources." 258 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
143 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that" 259 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
144 qeerror "it points to the necessary object directory so that it might find .config." 260 qeerror "it points to the necessary object directory so that it might find .config."
145 die "Kernel not configured; no .config found in ${KV_OUT_DIR}" 261 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
146 fi 262 fi
147} 263}
148 264
265# @FUNCTION: linux_chkconfig_present
266# @USAGE: option
267# @RETURN: true or false
268# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first.
149linux_chkconfig_present() { 272linux_chkconfig_present() {
150local RESULT 273local RESULT
151 require_configured_kernel 274 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
275 local config
276 config="${KV_OUT_DIR}/.config"
277 [ ! -f "${config}" ] && config="/proc/config.gz"
152 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
153 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
154} 280}
155 281
282# @FUNCTION: linux_chkconfig_module
283# @USAGE: option
284# @RETURN: true or false
285# @DESCRIPTION:
286# 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
288# MUST call linux_config_exists first.
156linux_chkconfig_module() { 289linux_chkconfig_module() {
157local RESULT 290local RESULT
158 require_configured_kernel 291 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
292 local config
293 config="${KV_OUT_DIR}/.config"
294 [ ! -f "${config}" ] && config="/proc/config.gz"
159 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
160 [ "${RESULT}" = "m" ] && return 0 || return 1 296 [ "${RESULT}" = "m" ] && return 0 || return 1
161} 297}
162 298
299# @FUNCTION: linux_chkconfig_builtin
300# @USAGE: option
301# @RETURN: true or false
302# @DESCRIPTION:
303# 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
305# MUST call linux_config_exists first.
163linux_chkconfig_builtin() { 306linux_chkconfig_builtin() {
164local RESULT 307local RESULT
165 require_configured_kernel 308 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
309 local config
310 config="${KV_OUT_DIR}/.config"
311 [ ! -f "${config}" ] && config="/proc/config.gz"
166 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
167 [ "${RESULT}" = "y" ] && return 0 || return 1 313 [ "${RESULT}" = "y" ] && return 0 || return 1
168} 314}
169 315
316# @FUNCTION: linux_chkconfig_string
317# @USAGE: option
318# @RETURN: CONFIG_<option>
319# @DESCRIPTION:
320# 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
322# MUST call linux_config_exists first.
170linux_chkconfig_string() { 323linux_chkconfig_string() {
171 require_configured_kernel 324 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
325 local config
326 config="${KV_OUT_DIR}/.config"
327 [ ! -f "${config}" ] && config="/proc/config.gz"
172 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 328 getfilevar_noexec "CONFIG_${1}" "${config}"
173} 329}
174 330
175# Versioning Functions 331# Versioning Functions
176# --------------------------------------- 332# ---------------------------------------
177 333
178# kernel_is returns true when the version is the same as the passed version 334# @FUNCTION: kernel_is
335# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
336# @RETURN: true or false
337# @DESCRIPTION:
338# It returns true when the current kernel version satisfies the comparison against the passed version.
339# -eq is the default comparison.
179# 340#
341# @CODE
180# For Example where KV = 2.6.9 342# For Example where KV = 2.6.9
181# kernel_is 2 4 returns false 343# kernel_is 2 4 returns false
182# kernel_is 2 returns true 344# kernel_is 2 returns true
183# kernel_is 2 6 returns true 345# kernel_is 2 6 returns true
184# kernel_is 2 6 8 returns false 346# kernel_is 2 6 8 returns false
185# kernel_is 2 6 9 returns true 347# kernel_is 2 6 9 returns true
186# 348# @CODE
349
187# got the jist yet? 350# got the jist yet?
188 351
189kernel_is() { 352kernel_is() {
190 # if we haven't determined the version yet, we need to. 353 # if we haven't determined the version yet, we need to.
191 get_version 354 get_version
213 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 376 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
214 test="${test}${KV_PATCH}";; 377 test="${test}${KV_PATCH}";;
215 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 378 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
216 esac 379 esac
217 done 380 done
218 381
219 [ ${test} ${operator} ${value} ] && return 0 || return 1 382 [ ${test} ${operator} ${value} ] && return 0 || return 1
220} 383}
221 384
222get_localversion() { 385get_localversion() {
223 local lv_list i x 386 local lv_list i x
232 done 395 done
233 x=${x/ /} 396 x=${x/ /}
234 echo ${x} 397 echo ${x}
235} 398}
236 399
400# internal variable, so we know to only print the warning once
401get_version_warning_done=
402
403# @FUNCTION: get_version
404# @DESCRIPTION:
405# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
406# (if KV_FULL is already set it does nothing).
407#
408# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
409#
410# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
411# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
412# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
237get_version() { 413get_version() {
238 local kbuild_output 414 local kbuild_output
239 415
240 # no need to execute this twice assuming KV_FULL is populated. 416 # no need to execute this twice assuming KV_FULL is populated.
241 # we can force by unsetting KV_FULL 417 # we can force by unsetting KV_FULL
244 # if we dont know KV_FULL, then we need too. 420 # if we dont know KV_FULL, then we need too.
245 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 421 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
246 unset KV_DIR 422 unset KV_DIR
247 423
248 # KV_DIR will contain the full path to the sources directory we should use 424 # KV_DIR will contain the full path to the sources directory we should use
425 [ -z "${get_version_warning_done}" ] && \
249 qeinfo "Determining the location of the kernel source code" 426 qeinfo "Determining the location of the kernel source code"
250 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 427 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
251 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 428 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
252 429
253 if [ -z "${KV_DIR}" ] 430 if [ -z "${KV_DIR}" ]
254 then 431 then
432 if [ -z "${get_version_warning_done}" ]; then
433 get_version_warning_done=1
255 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 434 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
256 qeinfo "This package requires Linux sources." 435 #qeinfo "This package requires Linux sources."
257 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 436 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
258 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 437 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
259 qeinfo "(or the kernel you wish to build against)." 438 qeinfo "(or the kernel you wish to build against)."
260 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 439 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
261 else 440 else
262 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 441 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
442 fi
263 fi 443 fi
264 return 1 444 return 1
265 fi 445 fi
266 446
447 if [ -z "${get_version_warning_done}" ]; then
267 qeinfo "Found kernel source directory:" 448 qeinfo "Found kernel source directory:"
268 qeinfo " ${KV_DIR}" 449 qeinfo " ${KV_DIR}"
450 fi
269 451
270 if [ ! -s "${KV_DIR}/Makefile" ] 452 if [ ! -s "${KV_DIR}/Makefile" ]
271 then 453 then
454 if [ -z "${get_version_warning_done}" ]; then
455 get_version_warning_done=1
272 qeerror "Could not find a Makefile in the kernel source directory." 456 qeerror "Could not find a Makefile in the kernel source directory."
273 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 457 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
458 fi
274 return 1 459 return 1
275 fi 460 fi
276 461
277 # OK so now we know our sources directory, but they might be using 462 # OK so now we know our sources directory, but they might be using
278 # KBUILD_OUTPUT, and we need this for .config and localversions-* 463 # KBUILD_OUTPUT, and we need this for .config and localversions-*
279 # so we better find it eh? 464 # so we better find it eh?
280 # do we pass KBUILD_OUTPUT on the CLI? 465 # do we pass KBUILD_OUTPUT on the CLI?
281 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 466 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
282 467
283 # And if we didn't pass it, we can take a nosey in the Makefile 468 # And if we didn't pass it, we can take a nosey in the Makefile
284 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 469 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
285 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 470 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
286 471
287 # And contrary to existing functions I feel we shouldn't trust the 472 # And contrary to existing functions I feel we shouldn't trust the
288 # directory name to find version information as this seems insane. 473 # directory name to find version information as this seems insane.
289 # so we parse ${KV_DIR}/Makefile 474 # so we parse ${KV_DIR}/Makefile
290 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 475 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
291 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 476 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
292 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 477 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
293 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 478 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
294 479
295 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 480 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
296 then 481 then
482 if [ -z "${get_version_warning_done}" ]; then
483 get_version_warning_done=1
297 qeerror "Could not detect kernel version." 484 qeerror "Could not detect kernel version."
298 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 485 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
486 fi
299 return 1 487 return 1
300 fi 488 fi
301 489
302 # and in newer versions we can also pull LOCALVERSION if it is set. 490 # and in newer versions we can also pull LOCALVERSION if it is set.
303 # but before we do this, we need to find if we use a different object directory. 491 # but before we do this, we need to find if we use a different object directory.
336 qeinfo " ${KV_FULL}" 524 qeinfo " ${KV_FULL}"
337 525
338 return 0 526 return 0
339} 527}
340 528
529# @FUNCTION: get_running_version
530# @DESCRIPTION:
531# It gets the version of the current running kernel and the result is the same as get_version() if the
532# function can find the sources.
341get_running_version() { 533get_running_version() {
342 KV_FULL=$(uname -r) 534 KV_FULL=$(uname -r)
343 535
344 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 536 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
345 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 537 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
364 556
365 557
366# ebuild check functions 558# ebuild check functions
367# --------------------------------------- 559# ---------------------------------------
368 560
561# @FUNCTION: check_kernel_built
562# @DESCRIPTION:
563# This function verifies that the current kernel sources have been already prepared otherwise it dies.
369check_kernel_built() { 564check_kernel_built() {
370 # if we haven't determined the version yet, we need to 565 # if we haven't determined the version yet, we need to
371 require_configured_kernel 566 require_configured_kernel
372 get_version 567 get_version
373 568
384 eerror "Then please try merging this module again." 579 eerror "Then please try merging this module again."
385 die "Kernel sources need compiling first" 580 die "Kernel sources need compiling first"
386 fi 581 fi
387} 582}
388 583
584# @FUNCTION: check_modules_supported
585# @DESCRIPTION:
586# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
389check_modules_supported() { 587check_modules_supported() {
390 # if we haven't determined the version yet, we need too. 588 # if we haven't determined the version yet, we need too.
391 require_configured_kernel 589 require_configured_kernel
392 get_version 590 get_version
393 591
398 eerror "in your kernel, recompile and then try merging this module again." 596 eerror "in your kernel, recompile and then try merging this module again."
399 die "No support for external modules in ${KV_FULL} config" 597 die "No support for external modules in ${KV_FULL} config"
400 fi 598 fi
401} 599}
402 600
601# @FUNCTION: check_extra_config
602# @DESCRIPTION:
603# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
604# the prefix ~ is not used) doesn't satisfy the directive.
403check_extra_config() { 605check_extra_config() {
404 local config negate die error reworkmodulenames 606 local config negate die error reworkmodulenames
405 local soft_errors_count=0 hard_errors_count=0 config_required=0 607 local soft_errors_count=0 hard_errors_count=0 config_required=0
406 608
407 # if we haven't determined the version yet, we need to 609 # if we haven't determined the version yet, we need to
420 if [[ ${config_required} == 0 ]]; then 622 if [[ ${config_required} == 0 ]]; then
421 # In the case where we don't require a .config, we can now bail out 623 # In the case where we don't require a .config, we can now bail out
422 # if the user has no .config as there is nothing to do. Otherwise 624 # if the user has no .config as there is nothing to do. Otherwise
423 # code later will cause a failure due to missing .config. 625 # code later will cause a failure due to missing .config.
424 if ! linux_config_exists; then 626 if ! linux_config_exists; then
627 ewarn "Unable to check for the following kernel config options due"
628 ewarn "to absence of any configured kernel sources:"
629 for config in ${CONFIG_CHECK}; do
630 ewarn " - ${config#\~}"
631 done
632 ewarn "You're on your own to make sure they are set if needed."
425 return 0 633 return 0
426 fi 634 fi
427 else 635 else
428 require_configured_kernel 636 require_configured_kernel
429 fi 637 fi
430 638
431 einfo "Checking for suitable kernel configuration options..." 639 einfo "Checking for suitable kernel configuration options..."
432 640
433 for config in ${CONFIG_CHECK} 641 for config in ${CONFIG_CHECK}
434 do 642 do
435 # if we specify any fatal, ensure we honor them 643 # if we specify any fatal, ensure we honor them
436 die=1 644 die=1
437 error=0 645 error=0
535 local DEFLATE 743 local DEFLATE
536 744
537 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 745 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
538 746
539 ebegin "checking ZLIB_INFLATE" 747 ebegin "checking ZLIB_INFLATE"
540 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 748 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
541 eend $? 749 eend $?
542 [ "$?" != 0 ] && die 750 [ "$?" != 0 ] && die
543 751
544 ebegin "checking ZLIB_DEFLATE" 752 ebegin "checking ZLIB_DEFLATE"
545 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 753 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
546 eend $? 754 eend $?
547 [ "$?" != 0 ] && die 755 [ "$?" != 0 ] && die
548 756
549 local LINENO_START 757 local LINENO_START
550 local LINENO_END 758 local LINENO_END
588} 796}
589 797
590################################ 798################################
591# Default pkg_setup 799# Default pkg_setup
592# Also used when inheriting linux-mod to force a get_version call 800# Also used when inheriting linux-mod to force a get_version call
593 801# @FUNCTION: linux-info_pkg_setup
802# @DESCRIPTION:
803# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
804# to support the options specified in CONFIG_CHECK (if not null)
594linux-info_pkg_setup() { 805linux-info_pkg_setup() {
595 get_version || die "Unable to calculate Linux Kernel version" 806 get_version
807 if [[ $rc -ne 0 ]]; then
808 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
809 get_running_version
810 fi
596 811
597 if kernel_is 2 4; then 812 if kernel_is 2 4; then
598 if [ "$( gcc-major-version )" -eq "4" ] ; then 813 if [ "$( gcc-major-version )" -eq "4" ] ; then
599 echo 814 echo
600 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with" 815 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"

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