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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 1.53 2008/01/22 21:05:31 dsd Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.62 2009/09/06 22:54:58 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 ${x}
235} 398}
236 399
400# @FUNCTION: get_version
401# @DESCRIPTION:
402# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
403# (if KV_FULL is already set it does nothing).
404#
405# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
406#
407# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
408# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
409# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
237get_version() { 410get_version() {
238 local kbuild_output 411 local kbuild_output
239 412
240 # no need to execute this twice assuming KV_FULL is populated. 413 # no need to execute this twice assuming KV_FULL is populated.
241 # we can force by unsetting KV_FULL 414 # we can force by unsetting KV_FULL
279 # so we better find it eh? 452 # so we better find it eh?
280 # do we pass KBUILD_OUTPUT on the CLI? 453 # do we pass KBUILD_OUTPUT on the CLI?
281 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 454 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
282 455
283 # And if we didn't pass it, we can take a nosey in the Makefile 456 # And if we didn't pass it, we can take a nosey in the Makefile
284 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 457 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
285 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 458 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
286 459
287 # And contrary to existing functions I feel we shouldn't trust the 460 # And contrary to existing functions I feel we shouldn't trust the
288 # directory name to find version information as this seems insane. 461 # directory name to find version information as this seems insane.
289 # so we parse ${KV_DIR}/Makefile 462 # so we parse ${KV_DIR}/Makefile
290 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 463 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
291 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 464 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
292 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 465 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
293 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 466 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
294 467
295 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 468 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
296 then 469 then
297 qeerror "Could not detect kernel version." 470 qeerror "Could not detect kernel version."
298 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 471 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
336 qeinfo " ${KV_FULL}" 509 qeinfo " ${KV_FULL}"
337 510
338 return 0 511 return 0
339} 512}
340 513
514# @FUNCTION: get_running_version
515# @DESCRIPTION:
516# It gets the version of the current running kernel and the result is the same as get_version() if the
517# function can find the sources.
341get_running_version() { 518get_running_version() {
342 KV_FULL=$(uname -r) 519 KV_FULL=$(uname -r)
343 520
344 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 521 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
345 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 522 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
364 541
365 542
366# ebuild check functions 543# ebuild check functions
367# --------------------------------------- 544# ---------------------------------------
368 545
546# @FUNCTION: check_kernel_built
547# @DESCRIPTION:
548# This function verifies that the current kernel sources have been already prepared otherwise it dies.
369check_kernel_built() { 549check_kernel_built() {
370 # if we haven't determined the version yet, we need to 550 # if we haven't determined the version yet, we need to
371 require_kernel_config 551 require_configured_kernel
372 get_version 552 get_version
373 553
374 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 554 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
375 then 555 then
376 eerror "These sources have not yet been prepared." 556 eerror "These sources have not yet been prepared."
384 eerror "Then please try merging this module again." 564 eerror "Then please try merging this module again."
385 die "Kernel sources need compiling first" 565 die "Kernel sources need compiling first"
386 fi 566 fi
387} 567}
388 568
569# @FUNCTION: check_modules_supported
570# @DESCRIPTION:
571# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
389check_modules_supported() { 572check_modules_supported() {
390 # if we haven't determined the version yet, we need too. 573 # if we haven't determined the version yet, we need too.
391 require_configured_kernel 574 require_configured_kernel
392 get_version 575 get_version
393 576
398 eerror "in your kernel, recompile and then try merging this module again." 581 eerror "in your kernel, recompile and then try merging this module again."
399 die "No support for external modules in ${KV_FULL} config" 582 die "No support for external modules in ${KV_FULL} config"
400 fi 583 fi
401} 584}
402 585
586# @FUNCTION: check_extra_config
587# @DESCRIPTION:
588# 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.
403check_extra_config() { 590check_extra_config() {
404 local config negate die error reworkmodulenames 591 local config negate die error reworkmodulenames
405 local soft_errors_count=0 hard_errors_count=0 config_required=0 592 local soft_errors_count=0 hard_errors_count=0 config_required=0
593
594 # if we haven't determined the version yet, we need to
595 get_version
406 596
407 # Determine if we really need a .config. The only time when we don't need 597 # Determine if we really need a .config. The only time when we don't need
408 # one is when all of the CONFIG_CHECK options are prefixed with "~". 598 # one is when all of the CONFIG_CHECK options are prefixed with "~".
409 for config in ${CONFIG_CHECK} 599 for config in ${CONFIG_CHECK}
410 do 600 do
417 if [[ ${config_required} == 0 ]]; then 607 if [[ ${config_required} == 0 ]]; then
418 # In the case where we don't require a .config, we can now bail out 608 # In the case where we don't require a .config, we can now bail out
419 # if the user has no .config as there is nothing to do. Otherwise 609 # if the user has no .config as there is nothing to do. Otherwise
420 # code later will cause a failure due to missing .config. 610 # code later will cause a failure due to missing .config.
421 if ! linux_config_exists; then 611 if ! linux_config_exists; then
612 ewarn "Unable to check for the following kernel config options due"
613 ewarn "to absence of any configured kernel sources:"
614 for config in ${CONFIG_CHECK}; do
615 ewarn " - ${config#\~}"
616 done
617 ewarn "You're on your own to make sure they are set if needed."
422 return 0 618 return 0
423 fi 619 fi
424 else 620 else
425 require_configured_kernel 621 require_configured_kernel
426 fi 622 fi
427 623
428 # if we haven't determined the version yet, we need too.
429 get_version
430
431 einfo "Checking for suitable kernel configuration options..." 624 einfo "Checking for suitable kernel configuration options..."
432 625
433 for config in ${CONFIG_CHECK} 626 for config in ${CONFIG_CHECK}
434 do 627 do
435 # if we specify any fatal, ensure we honor them 628 # if we specify any fatal, ensure we honor them
436 die=1 629 die=1
437 error=0 630 error=0
535 local DEFLATE 728 local DEFLATE
536 729
537 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 730 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
538 731
539 ebegin "checking ZLIB_INFLATE" 732 ebegin "checking ZLIB_INFLATE"
540 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 733 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
541 eend $? 734 eend $?
542 [ "$?" != 0 ] && die 735 [ "$?" != 0 ] && die
543 736
544 ebegin "checking ZLIB_DEFLATE" 737 ebegin "checking ZLIB_DEFLATE"
545 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 738 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
546 eend $? 739 eend $?
547 [ "$?" != 0 ] && die 740 [ "$?" != 0 ] && die
548 741
549 local LINENO_START 742 local LINENO_START
550 local LINENO_END 743 local LINENO_END
588} 781}
589 782
590################################ 783################################
591# Default pkg_setup 784# Default pkg_setup
592# Also used when inheriting linux-mod to force a get_version call 785# Also used when inheriting linux-mod to force a get_version call
593 786# @FUNCTION: linux-info_pkg_setup
787# @DESCRIPTION:
788# 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)
594linux-info_pkg_setup() { 790linux-info_pkg_setup() {
595 get_version || die "Unable to calculate Linux Kernel version" 791 get_version
792 if [[ $rc -ne 0 ]]; then
793 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
794 get_running_version
795 fi
596 796
597 if kernel_is 2 4; then 797 if kernel_is 2 4; then
598 if [ "$( gcc-major-version )" -eq "4" ] ; then 798 if [ "$( gcc-major-version )" -eq "4" ] ; then
599 echo 799 echo
600 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with" 800 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"

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