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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 1.46 2006/07/20 05:34:10 marineam Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.62 2009/09/06 22:54:58 robbat2 Exp $
4# 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#
11# Maintainer: John Mylchreest <johnm@gentoo.org> 5# Original author: John Mylchreest <johnm@gentoo.org>
12# Copyright 2004 Gentoo Linux 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 :)
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.
15 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
67case ${ARCH} in 123case ${ARCH} in
68 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 124 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
69 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 125 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
70esac 126esac
71 127
72# These are legacy wrappers for toolchain-funcs. 128# @FUNCTION: set_arch_to_kernel
73# I dont like them here, but oh well. 129# @DESCRIPTION:
130# Set the env ARCH to match what the kernel expects.
74set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 131set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
132# @FUNCTION: set_arch_to_portage
133# @DESCRIPTION:
134# Set the env ARCH to match what portage expects.
75set_arch_to_portage() { export ARCH="$(tc-arch)"; } 135set_arch_to_portage() { export ARCH=$(tc-arch); }
76 136
77# qeinfo "Message" 137# qeinfo "Message"
78# ------------------- 138# -------------------
79# qeinfo is a quiet einfo call when EBUILD_PHASE 139# qeinfo is a quiet einfo call when EBUILD_PHASE
80# should not have visible output. 140# should not have visible output.
95qeerror() { qout eerror "${@}" ; } 155qeerror() { qout eerror "${@}" ; }
96 156
97# File Functions 157# File Functions
98# --------------------------------------- 158# ---------------------------------------
99 159
100# getfilevar accepts 2 vars as follows: 160# @FUNCTION: getfilevar
101# getfilevar <VARIABLE> <CONFIGFILE> 161# @USAGE: variable configfile
102 162# @RETURN: the value of the variable
163# @DESCRIPTION:
164# It detects the value of the variable defined in the file configfile. This is
165# done by including the configfile, and printing the variable with Make.
166# It WILL break if your makefile has missing dependencies!
103getfilevar() { 167getfilevar() {
104local ERROR workingdir basefname basedname myARCH="${ARCH}" 168local ERROR basefname basedname myARCH="${ARCH}"
105 ERROR=0 169 ERROR=0
106 170
107 [ -z "${1}" ] && ERROR=1 171 [ -z "${1}" ] && ERROR=1
108 [ ! -f "${2}" ] && ERROR=1 172 [ ! -f "${2}" ] && ERROR=1
109 173
111 then 175 then
112 echo -e "\n" 176 echo -e "\n"
113 eerror "getfilevar requires 2 variables, with the second a valid file." 177 eerror "getfilevar requires 2 variables, with the second a valid file."
114 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 178 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
115 else 179 else
116 workingdir="${PWD}"
117 basefname="$(basename ${2})" 180 basefname="$(basename ${2})"
118 basedname="$(dirname ${2})" 181 basedname="$(dirname ${2})"
119 unset ARCH 182 unset ARCH
120 183
121 cd "${basedname}"
122 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \ 184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
123 make ${BUILD_FIXES} -s -f - 2>/dev/null 185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
124 cd "${workingdir}"
125 186
126 ARCH=${myARCH} 187 ARCH=${myARCH}
127 fi 188 fi
128} 189}
129 190
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="${ARCH}"
200 ERROR=0
201 mycat='cat'
202
203 [ -z "${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.
247linux_config_exists() {
248 linux_config_src_exists || linux_config_bin_exists
249}
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.
255require_configured_kernel() {
256 if ! linux_config_src_exists; then
257 qeerror "Could not find a usable .config in the kernel source directory."
258 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
259 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
260 qeerror "it points to the necessary object directory so that it might find .config."
261 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
262 fi
263}
264
265# @FUNCTION: linux_chkconfig_present
266# @USAGE: option
267# @RETURN: true or false
268# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first.
130linux_chkconfig_present() { 272linux_chkconfig_present() {
131local RESULT 273local RESULT
274 [ -z "${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"
132 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
133 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
134} 280}
135 281
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.
136linux_chkconfig_module() { 289linux_chkconfig_module() {
137local RESULT 290local RESULT
291 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
292 local config
293 config="${KV_OUT_DIR}/.config"
294 [ ! -f "${config}" ] && config="/proc/config.gz"
138 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
139 [ "${RESULT}" = "m" ] && return 0 || return 1 296 [ "${RESULT}" = "m" ] && return 0 || return 1
140} 297}
141 298
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.
142linux_chkconfig_builtin() { 306linux_chkconfig_builtin() {
143local RESULT 307local RESULT
308 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
309 local config
310 config="${KV_OUT_DIR}/.config"
311 [ ! -f "${config}" ] && config="/proc/config.gz"
144 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
145 [ "${RESULT}" = "y" ] && return 0 || return 1 313 [ "${RESULT}" = "y" ] && return 0 || return 1
146} 314}
147 315
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.
148linux_chkconfig_string() { 323linux_chkconfig_string() {
324 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
325 local config
326 config="${KV_OUT_DIR}/.config"
327 [ ! -f "${config}" ] && config="/proc/config.gz"
149 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 328 getfilevar_noexec "CONFIG_${1}" "${config}"
150} 329}
151 330
152# Versioning Functions 331# Versioning Functions
153# --------------------------------------- 332# ---------------------------------------
154 333
155# 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.
156# 340#
341# @CODE
157# For Example where KV = 2.6.9 342# For Example where KV = 2.6.9
158# kernel_is 2 4 returns false 343# kernel_is 2 4 returns false
159# kernel_is 2 returns true 344# kernel_is 2 returns true
160# kernel_is 2 6 returns true 345# kernel_is 2 6 returns true
161# kernel_is 2 6 8 returns false 346# kernel_is 2 6 8 returns false
162# kernel_is 2 6 9 returns true 347# kernel_is 2 6 9 returns true
163# 348# @CODE
349
164# got the jist yet? 350# got the jist yet?
165 351
166kernel_is() { 352kernel_is() {
167 # if we haven't determined the version yet, we need too. 353 # if we haven't determined the version yet, we need to.
168 get_version; 354 get_version
169 local operator test value x=0 y=0 z=0 355 local operator test value x=0 y=0 z=0
170 356
171 case ${1} in 357 case ${1} in
172 lt) operator="-lt"; shift;; 358 lt) operator="-lt"; shift;;
173 gt) operator="-gt"; shift;; 359 gt) operator="-gt"; shift;;
190 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 376 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
191 test="${test}${KV_PATCH}";; 377 test="${test}${KV_PATCH}";;
192 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 378 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
193 esac 379 esac
194 done 380 done
195 381
196 [ ${test} ${operator} ${value} ] && return 0 || return 1 382 [ ${test} ${operator} ${value} ] && return 0 || return 1
197} 383}
198 384
199get_localversion() { 385get_localversion() {
200 local lv_list i x 386 local lv_list i x
209 done 395 done
210 x=${x/ /} 396 x=${x/ /}
211 echo ${x} 397 echo ${x}
212} 398}
213 399
400# @FUNCTION: get_version
401# @DESCRIPTION:
402# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
403# (if KV_FULL is already set it does nothing).
404#
405# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
406#
407# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
408# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
409# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
214get_version() { 410get_version() {
215 local kbuild_output 411 local kbuild_output
216 412
217 # no need to execute this twice assuming KV_FULL is populated. 413 # no need to execute this twice assuming KV_FULL is populated.
218 # we can force by unsetting KV_FULL 414 # we can force by unsetting KV_FULL
256 # so we better find it eh? 452 # so we better find it eh?
257 # do we pass KBUILD_OUTPUT on the CLI? 453 # do we pass KBUILD_OUTPUT on the CLI?
258 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 454 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
259 455
260 # And if we didn't pass it, we can take a nosey in the Makefile 456 # And if we didn't pass it, we can take a nosey in the Makefile
261 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 457 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
262 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 458 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
263 459
264 # 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
265 # directory name to find version information as this seems insane. 461 # directory name to find version information as this seems insane.
266 # so we parse ${KV_DIR}/Makefile 462 # so we parse ${KV_DIR}/Makefile
267 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 463 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
268 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 464 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
269 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 465 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
270 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 466 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
271 467
272 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 468 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
273 then 469 then
274 qeerror "Could not detect kernel version." 470 qeerror "Could not detect kernel version."
275 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 471 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
278 474
279 # and in newer versions we can also pull LOCALVERSION if it is set. 475 # and in newer versions we can also pull LOCALVERSION if it is set.
280 # but before we do this, we need to find if we use a different object directory. 476 # but before we do this, we need to find if we use a different object directory.
281 # This *WILL* break if the user is using localversions, but we assume it was 477 # This *WILL* break if the user is using localversions, but we assume it was
282 # caught before this if they are. 478 # caught before this if they are.
283 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 479 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
284 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" 480 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
285 481
286 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 482 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
287 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 483 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
288 if [ -n "${KV_OUT_DIR}" ]; 484 if [ -n "${KV_OUT_DIR}" ];
289 then 485 then
293 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})" 489 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
294 fi 490 fi
295 # and if we STILL have not got it, then we better just set it to KV_DIR 491 # and if we STILL have not got it, then we better just set it to KV_DIR
296 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 492 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
297 493
298 if [ ! -s "${KV_OUT_DIR}/.config" ]
299 then
300 qeerror "Could not find a usable .config in the kernel source directory."
301 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
302 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
303 qeerror "it points to the necessary object directory so that it might find .config."
304 return 1
305 fi
306
307 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 494 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
495 if linux_config_exists; then
308 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 496 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
309 KV_LOCAL="${KV_LOCAL//\"/}" 497 KV_LOCAL="${KV_LOCAL//\"/}"
310 498
311 # For things like git that can append extra stuff: 499 # For things like git that can append extra stuff:
312 [ -e ${KV_DIR}/scripts/setlocalversion ] && 500 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
501 linux_chkconfig_builtin LOCALVERSION_AUTO &&
313 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 502 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
503 fi
314 504
315 # And we should set KV_FULL to the full expanded version 505 # And we should set KV_FULL to the full expanded version
316 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 506 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
317 507
318 qeinfo "Found sources for kernel version:" 508 qeinfo "Found sources for kernel version:"
319 qeinfo " ${KV_FULL}" 509 qeinfo " ${KV_FULL}"
320 510
321 return 0 511 return 0
322} 512}
323 513
514# @FUNCTION: get_running_version
515# @DESCRIPTION:
516# It gets the version of the current running kernel and the result is the same as get_version() if the
517# function can find the sources.
324get_running_version() { 518get_running_version() {
325 KV_FULL=$(uname -r) 519 KV_FULL=$(uname -r)
326 520
327 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 521 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
328 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 522 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
347 541
348 542
349# ebuild check functions 543# ebuild check functions
350# --------------------------------------- 544# ---------------------------------------
351 545
546# @FUNCTION: check_kernel_built
547# @DESCRIPTION:
548# This function verifies that the current kernel sources have been already prepared otherwise it dies.
352check_kernel_built() { 549check_kernel_built() {
353 # if we haven't determined the version yet, we need too. 550 # if we haven't determined the version yet, we need to
551 require_configured_kernel
354 get_version; 552 get_version
355 553
356 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 554 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
357 then 555 then
358 eerror "These sources have not yet been prepared." 556 eerror "These sources have not yet been prepared."
359 eerror "We cannot build against an unprepared tree." 557 eerror "We cannot build against an unprepared tree."
366 eerror "Then please try merging this module again." 564 eerror "Then please try merging this module again."
367 die "Kernel sources need compiling first" 565 die "Kernel sources need compiling first"
368 fi 566 fi
369} 567}
370 568
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.
371check_modules_supported() { 572check_modules_supported() {
372 # if we haven't determined the version yet, we need too. 573 # if we haven't determined the version yet, we need too.
574 require_configured_kernel
373 get_version; 575 get_version
374 576
375 if ! linux_chkconfig_builtin "MODULES" 577 if ! linux_chkconfig_builtin "MODULES"
376 then 578 then
377 eerror "These sources do not support loading external modules." 579 eerror "These sources do not support loading external modules."
378 eerror "to be able to use this module please enable \"Loadable modules support\"" 580 eerror "to be able to use this module please enable \"Loadable modules support\""
379 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."
380 die "No support for external modules in ${KV_FULL} config" 582 die "No support for external modules in ${KV_FULL} config"
381 fi 583 fi
382} 584}
383 585
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.
384check_extra_config() { 590check_extra_config() {
385 local config negate die error reworkmodulenames 591 local config negate die error reworkmodulenames
386 local soft_errors_count=0 hard_errors_count=0 592 local soft_errors_count=0 hard_errors_count=0 config_required=0
387 593
388 # if we haven't determined the version yet, we need too. 594 # if we haven't determined the version yet, we need to
389 get_version; 595 get_version
596
597 # Determine if we really need a .config. The only time when we don't need
598 # one is when all of the CONFIG_CHECK options are prefixed with "~".
599 for config in ${CONFIG_CHECK}
600 do
601 if [[ "${config:0:1}" != "~" ]]; then
602 config_required=1
603 break
604 fi
605 done
606
607 if [[ ${config_required} == 0 ]]; then
608 # In the case where we don't require a .config, we can now bail out
609 # if the user has no .config as there is nothing to do. Otherwise
610 # code later will cause a failure due to missing .config.
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."
618 return 0
619 fi
620 else
621 require_configured_kernel
622 fi
390 623
391 einfo "Checking for suitable kernel configuration options..." 624 einfo "Checking for suitable kernel configuration options..."
625
392 for config in ${CONFIG_CHECK} 626 for config in ${CONFIG_CHECK}
393 do 627 do
394 # if we specify any fatal, ensure we honor them 628 # if we specify any fatal, ensure we honor them
395 die=1 629 die=1
396 error=0 630 error=0
397 negate=0 631 negate=0
398 reworkmodulenames=0 632 reworkmodulenames=0
399 633
400 if [[ -z ${config/\~*} ]]; then 634 if [[ ${config:0:1} == "~" ]]; then
401 die=0 635 die=0
402 config=${config:1} 636 config=${config:1}
403 elif [[ -z ${config/\@*} ]]; then 637 elif [[ ${config:0:1} == "@" ]]; then
404 die=0 638 die=0
405 reworkmodulenames=1 639 reworkmodulenames=1
406 config=${config:1} 640 config=${config:1}
407 fi 641 fi
408 if [[ -z ${config//\!*} ]]; then 642 if [[ ${config:0:1} == "!" ]]; then
409 negate=1 643 negate=1
410 config=${config:1} 644 config=${config:1}
411 fi 645 fi
412 646
413 if [[ ${negate} == 1 ]]; then 647 if [[ ${negate} == 1 ]]; then
475 eend 0 709 eend 0
476 fi 710 fi
477} 711}
478 712
479check_zlibinflate() { 713check_zlibinflate() {
480 # if we haven't determined the version yet, we need too. 714 # if we haven't determined the version yet, we need to
715 require_configured_kernel
481 get_version; 716 get_version
482 717
483 # although I restructured this code - I really really really dont support it! 718 # although I restructured this code - I really really really dont support it!
484 719
485 # bug #27882 - zlib routines are only linked into the kernel 720 # bug #27882 - zlib routines are only linked into the kernel
486 # if something compiled into the kernel calls them 721 # if something compiled into the kernel calls them
493 local DEFLATE 728 local DEFLATE
494 729
495 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 730 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
496 731
497 ebegin "checking ZLIB_INFLATE" 732 ebegin "checking ZLIB_INFLATE"
498 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 733 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
499 eend $? 734 eend $?
500 [ "$?" != 0 ] && die 735 [ "$?" != 0 ] && die
501 736
502 ebegin "checking ZLIB_DEFLATE" 737 ebegin "checking ZLIB_DEFLATE"
503 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 738 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
504 eend $? 739 eend $?
505 [ "$?" != 0 ] && die 740 [ "$?" != 0 ] && die
506 741
507 local LINENO_START 742 local LINENO_START
508 local LINENO_END 743 local LINENO_END
546} 781}
547 782
548################################ 783################################
549# Default pkg_setup 784# Default pkg_setup
550# 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
551 786# @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)
552linux-info_pkg_setup() { 790linux-info_pkg_setup() {
553 get_version || die "Unable to calculate Linux Kernel version" 791 get_version
792 if [[ $rc -ne 0 ]]; then
793 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
794 get_running_version
795 fi
796
797 if kernel_is 2 4; then
798 if [ "$( gcc-major-version )" -eq "4" ] ; then
799 echo
800 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
801 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
802 echo
803 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
804 ewarn "newer kernel that supports gcc-4."
805 echo
806 ewarn "Also be aware that bugreports about gcc-4 not working"
807 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
808 echo
809 epause 10
810 fi
811 fi
812
554 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 813 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
555} 814}

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