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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 1.39 2006/02/08 12:57:52 brix Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.61 2009/08/30 22:37:06 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 sources 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.
15 20
16# A Couple of env vars are available to effect usage of this eclass 21# A Couple of env vars are available to effect usage of this eclass
17# These are as follows: 22# These are as follows:
18# 23
19# Env Var Option Description 24# @ECLASS-VARIABLE: KERNEL_DIR
20# KERNEL_DIR <string> The directory containing kernel the target kernel 25# @DESCRIPTION:
21# sources. 26# A string containing the directory of the target kernel sources. The default value is
27# "/usr/src/linux"
28
29# @ECLASS-VARIABLE: CONFIG_CHECK
30# @DESCRIPTION:
22# CONFIG_CHECK <string> a list of .config options to check for before 31# A string containing a list of .config options to check for before
23# proceeding with the install. ie: CONFIG_CHECK="MTRR" 32# proceeding with the install.
33#
34# e.g.: CONFIG_CHECK="MTRR"
35#
24# You can also check that an option doesn't exist by 36# You can also check that an option doesn't exist by
25# prepending it with an exclamation mark (!). 37# prepending it with an exclamation mark (!).
38#
26# ie: CONFIG_CHECK="!MTRR" 39# e.g.: CONFIG_CHECK="!MTRR"
40#
27# To simply warn about a missing option, prepend a '~'. 41# To simply warn about a missing option, prepend a '~'.
28# ERROR_CFG <string> The error message to display when the above check 42
43# @ECLASS-VARIABLE: ERROR_<CFG>
44# @DESCRIPTION:
45# A string containing the error message to display when the check against CONFIG_CHECK
29# fails. <CFG> should reference the appropriate option 46# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
30# as above. ie: ERROR_MTRR="MTRR exists in the .config 47#
31# but shouldn't!!" 48# 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 49
33# the kernel makefile. This contains the directory 50# @ECLASS-VARIABLE: KBUILD_OUTPUT
51# @DESCRIPTION:
52# 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. 53# which is to be used as the kernel object directory.
35 54
36# There are also a couple of variables which are set by this, and shouldn't be 55# There are also a couple of variables which are set by this, and shouldn't be
37# set by hand. These are as follows: 56# set by hand. These are as follows:
38# 57
39# Env Var Option Description 58# @ECLASS-VARIABLE: KV_FULL
40# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1 59# @DESCRIPTION:
41# KV_MAJOR <integer> The kernel major version. ie: 2 60# 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 61
43# KV_PATCH <integer> The kernel patch version. ie: 9 62# @ECLASS-VARIABLE: KV_MAJOR
44# KV_EXTRA <string> The kernel EXTRAVERSION. ie: -gentoo 63# @DESCRIPTION:
45# KV_LOCAL <string> The kernel LOCALVERSION concatenation. ie: -johnm 64# 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 65
66# @ECLASS-VARIABLE: KV_MINOR
67# @DESCRIPTION:
68# A read-only variable. It's an integer containing the kernel minor version. ie: 6
69
70# @ECLASS-VARIABLE: KV_PATCH
71# @DESCRIPTION:
72# A read-only variable. It's an integer containing the kernel patch version. ie: 9
73
74# @ECLASS-VARIABLE: KV_EXTRA
75# @DESCRIPTION:
76# A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
77
78# @ECLASS-VARIABLE: KV_LOCAL
79# @DESCRIPTION:
80# A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
81
82# @ECLASS-VARIABLE: KV_DIR
83# @DESCRIPTION:
84# A read-only variable. It's a string containing the kernel source directory, will be null if
47# KERNEL_DIR is invalid. 85# KERNEL_DIR is invalid.
48# KV_OUT_DIR <string> The kernel object directory. will be KV_DIR unless 86
49# koutput is used. This should be used for referencing 87# @ECLASS-VARIABLE: KV_OUT_DIR
50# .config. 88# @DESCRIPTION:
89# A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
90# KBUILD_OUTPUT is used. This should be used for referencing .config.
51 91
52# And to ensure all the weirdness with crosscompile 92# And to ensure all the weirdness with crosscompile
53inherit toolchain-funcs versionator 93inherit toolchain-funcs versionator
54 94
55EXPORT_FUNCTIONS pkg_setup 95EXPORT_FUNCTIONS pkg_setup
56 96
57DEPEND="virtual/linux-sources" 97DEPEND="kernel_linux? ( virtual/linux-sources )"
58RDEPEND="" 98RDEPEND=""
59 99
60# Overwritable environment Var's 100# Overwritable environment Var's
61# --------------------------------------- 101# ---------------------------------------
62KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 102KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
67case ${ARCH} in 107case ${ARCH} in
68 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 108 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
69 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 109 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
70esac 110esac
71 111
72# These are legacy wrappers for toolchain-funcs. 112# @FUNCTION: set_arch_to_kernel
73# I dont like them here, but oh well. 113# @DESCRIPTION:
114# Set the env ARCH to match what the kernel expects.
74set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 115set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
116# @FUNCTION: set_arch_to_portage
117# @DESCRIPTION:
118# Set the env ARCH to match what portage expects.
75set_arch_to_portage() { export ARCH="$(tc-arch)"; } 119set_arch_to_portage() { export ARCH=$(tc-arch); }
76 120
77# qeinfo "Message" 121# qeinfo "Message"
78# ------------------- 122# -------------------
79# qeinfo is a quiet einfo call when EBUILD_PHASE 123# qeinfo is a quiet einfo call when EBUILD_PHASE
80# should not have visible output. 124# should not have visible output.
95qeerror() { qout eerror "${@}" ; } 139qeerror() { qout eerror "${@}" ; }
96 140
97# File Functions 141# File Functions
98# --------------------------------------- 142# ---------------------------------------
99 143
100# getfilevar accepts 2 vars as follows: 144# @FUNCTION: getfilevar
101# getfilevar <VARIABLE> <CONFIGFILE> 145# @USAGE: variable configfile
102 146# @RETURN: the value of the variable
147# @DESCRIPTION:
148# It detects the value of the variable defined in the file configfile. This is
149# done by including the configfile, and printing the variable with Make.
150# It WILL break if your makefile has missing dependencies!
103getfilevar() { 151getfilevar() {
104local ERROR workingdir basefname basedname myARCH="${ARCH}" 152local ERROR basefname basedname myARCH="${ARCH}"
105 ERROR=0 153 ERROR=0
106 154
107 [ -z "${1}" ] && ERROR=1 155 [ -z "${1}" ] && ERROR=1
108 [ ! -f "${2}" ] && ERROR=1 156 [ ! -f "${2}" ] && ERROR=1
109 157
111 then 159 then
112 echo -e "\n" 160 echo -e "\n"
113 eerror "getfilevar requires 2 variables, with the second a valid file." 161 eerror "getfilevar requires 2 variables, with the second a valid file."
114 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 162 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
115 else 163 else
116 workingdir="${PWD}"
117 basefname="$(basename ${2})" 164 basefname="$(basename ${2})"
118 basedname="$(dirname ${2})" 165 basedname="$(dirname ${2})"
119 unset ARCH 166 unset ARCH
120 167
121 cd "${basedname}" 168 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
122 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ 169 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
123 make ${BUILD_FIXES} -s -f - e 2>/dev/null
124 cd "${workingdir}"
125 170
126 ARCH=${myARCH} 171 ARCH=${myARCH}
127 fi 172 fi
128} 173}
129 174
175# @FUNCTION: getfilevar_noexec
176# @USAGE: variable configfile
177# @RETURN: the value of the variable
178# @DESCRIPTION:
179# It detects the value of the variable defined in the file configfile.
180# This is done with sed matching an expression only. If the variable is defined,
181# you will run into problems. See getfilevar for those cases.
182getfilevar_noexec() {
183local ERROR basefname basedname myARCH="${ARCH}"
184 ERROR=0
185
186 [ -z "${1}" ] && ERROR=1
187 [ ! -f "${2}" ] && ERROR=1
188
189 if [ "${ERROR}" = 1 ]
190 then
191 echo -e "\n"
192 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
193 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
194 else
195 sed -n \
196 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
197 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
198 s,[[:space:]]*\$,,g ;
199 p
200 }" \
201 "${2}"
202 fi
203}
204
205
206# @FUNCTION: linux_config_exists
207# @RETURN: true or false
208# @DESCRIPTION:
209# It returns true if .config exists otherwise false
210linux_config_exists() {
211 [ -s "${KV_OUT_DIR}/.config" ]
212}
213
214# @FUNCTION: require_configured_kernel
215# @DESCRIPTION:
216# This function verifies that the current kernel is configured (it checks against the existence of .config)
217# otherwise it dies.
218require_configured_kernel() {
219 if ! linux_config_exists; then
220 qeerror "Could not find a usable .config in the kernel source directory."
221 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
222 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
223 qeerror "it points to the necessary object directory so that it might find .config."
224 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
225 fi
226}
227
228# @FUNCTION: linux_chkconfig_present
229# @USAGE: option
230# @RETURN: true or false
231# @DESCRIPTION:
232# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
130linux_chkconfig_present() { 233linux_chkconfig_present() {
131local RESULT 234local RESULT
235 require_configured_kernel
132 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 236 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)"
133 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 237 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
134} 238}
135 239
240# @FUNCTION: linux_chkconfig_module
241# @USAGE: option
242# @RETURN: true or false
243# @DESCRIPTION:
244# It checks that CONFIG_<option>=m is present in the current kernel .config
136linux_chkconfig_module() { 245linux_chkconfig_module() {
137local RESULT 246local RESULT
247 require_configured_kernel
138 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 248 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)"
139 [ "${RESULT}" = "m" ] && return 0 || return 1 249 [ "${RESULT}" = "m" ] && return 0 || return 1
140} 250}
141 251
252# @FUNCTION: linux_chkconfig_builtin
253# @USAGE: option
254# @RETURN: true or false
255# @DESCRIPTION:
256# It checks that CONFIG_<option>=y is present in the current kernel .config
142linux_chkconfig_builtin() { 257linux_chkconfig_builtin() {
143local RESULT 258local RESULT
259 require_configured_kernel
144 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 260 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)"
145 [ "${RESULT}" = "y" ] && return 0 || return 1 261 [ "${RESULT}" = "y" ] && return 0 || return 1
146} 262}
147 263
264# @FUNCTION: linux_chkconfig_string
265# @USAGE: option
266# @RETURN: CONFIG_<option>
267# @DESCRIPTION:
268# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
148linux_chkconfig_string() { 269linux_chkconfig_string() {
270 require_configured_kernel
149 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 271 getfilevar_noexec "CONFIG_${1}" "${KV_OUT_DIR}/.config"
150} 272}
151 273
152# Versioning Functions 274# Versioning Functions
153# --------------------------------------- 275# ---------------------------------------
154 276
155# kernel_is returns true when the version is the same as the passed version 277# @FUNCTION: kernel_is
278# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
279# @RETURN: true or false
280# @DESCRIPTION:
281# It returns true when the current kernel version satisfies the comparison against the passed version.
282# -eq is the default comparison.
156# 283#
284# @CODE
157# For Example where KV = 2.6.9 285# For Example where KV = 2.6.9
158# kernel_is 2 4 returns false 286# kernel_is 2 4 returns false
159# kernel_is 2 returns true 287# kernel_is 2 returns true
160# kernel_is 2 6 returns true 288# kernel_is 2 6 returns true
161# kernel_is 2 6 8 returns false 289# kernel_is 2 6 8 returns false
162# kernel_is 2 6 9 returns true 290# kernel_is 2 6 9 returns true
163# 291# @CODE
292
164# got the jist yet? 293# got the jist yet?
165 294
166kernel_is() { 295kernel_is() {
167 # if we haven't determined the version yet, we need too. 296 # if we haven't determined the version yet, we need to.
168 get_version; 297 get_version
169 local operator test value x=0 y=0 z=0 298 local operator test value x=0 y=0 z=0
170 299
171 case ${1} in 300 case ${1} in
172 lt) operator="-lt"; shift;; 301 lt) operator="-lt"; shift;;
173 gt) operator="-gt"; shift;; 302 gt) operator="-gt"; shift;;
190 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 319 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
191 test="${test}${KV_PATCH}";; 320 test="${test}${KV_PATCH}";;
192 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 321 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
193 esac 322 esac
194 done 323 done
195 324
196 [ ${test} ${operator} ${value} ] && return 0 || return 1 325 [ ${test} ${operator} ${value} ] && return 0 || return 1
197} 326}
198 327
199get_localversion() { 328get_localversion() {
200 local lv_list i x 329 local lv_list i x
209 done 338 done
210 x=${x/ /} 339 x=${x/ /}
211 echo ${x} 340 echo ${x}
212} 341}
213 342
343# @FUNCTION: get_version
344# @DESCRIPTION:
345# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
346# (if KV_FULL is already set it does nothing).
347#
348# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
349#
350# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
351# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
352# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
214get_version() { 353get_version() {
215 local kbuild_output 354 local kbuild_output
216 355
217 # no need to execute this twice assuming KV_FULL is populated. 356 # no need to execute this twice assuming KV_FULL is populated.
218 # we can force by unsetting KV_FULL 357 # we can force by unsetting KV_FULL
256 # so we better find it eh? 395 # so we better find it eh?
257 # do we pass KBUILD_OUTPUT on the CLI? 396 # do we pass KBUILD_OUTPUT on the CLI?
258 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 397 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
259 398
260 # And if we didn't pass it, we can take a nosey in the Makefile 399 # And if we didn't pass it, we can take a nosey in the Makefile
261 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 400 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
262 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 401 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
263 402
264 # And contrary to existing functions I feel we shouldn't trust the 403 # And contrary to existing functions I feel we shouldn't trust the
265 # directory name to find version information as this seems insane. 404 # directory name to find version information as this seems insane.
266 # so we parse ${KV_DIR}/Makefile 405 # so we parse ${KV_DIR}/Makefile
267 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 406 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
268 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 407 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
269 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 408 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
270 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 409 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
271 410
272 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 411 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
273 then 412 then
274 qeerror "Could not detect kernel version." 413 qeerror "Could not detect kernel version."
275 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 414 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
278 417
279 # and in newer versions we can also pull LOCALVERSION if it is set. 418 # and in newer versions we can also pull LOCALVERSION if it is set.
280 # but before we do this, we need to find if we use a different object directory. 419 # but before we do this, we need to find if we use a different object directory.
281 # This *WILL* break if the user is using localversions, but we assume it was 420 # This *WILL* break if the user is using localversions, but we assume it was
282 # caught before this if they are. 421 # caught before this if they are.
283 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 422 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
284 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" 423 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
285 424
286 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 425 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
287 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 426 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
288 if [ -n "${KV_OUT_DIR}" ]; 427 if [ -n "${KV_OUT_DIR}" ];
289 then 428 then
290 qeinfo "Found kernel object directory:" 429 qeinfo "Found kernel object directory:"
291 qeinfo " ${KV_OUT_DIR}" 430 qeinfo " ${KV_OUT_DIR}"
292 431
293 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})" 432 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
294 fi 433 fi
295 # and if we STILL haven't got it, then we better just set it to KV_DIR 434 # and if we STILL have not got it, then we better just set it to KV_DIR
296 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 435 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
297 436
298 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 437 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
438 if linux_config_exists; then
299 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 439 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
300 KV_LOCAL="${KV_LOCAL//\"/}" 440 KV_LOCAL="${KV_LOCAL//\"/}"
441
442 # For things like git that can append extra stuff:
443 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
444 linux_chkconfig_builtin LOCALVERSION_AUTO &&
445 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
446 fi
301 447
302 # And we should set KV_FULL to the full expanded version 448 # And we should set KV_FULL to the full expanded version
303 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 449 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
304 450
305 qeinfo "Found sources for kernel version:" 451 qeinfo "Found sources for kernel version:"
306 qeinfo " ${KV_FULL}" 452 qeinfo " ${KV_FULL}"
307 453
308 if [ ! -s "${KV_OUT_DIR}/.config" ]
309 then
310 qeerror "Could not find a usable .config in the kernel source directory."
311 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
312 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
313 qeerror "it points to the necessary object directory so that it might find .config."
314 return 1
315 fi
316
317 return 0 454 return 0
318} 455}
319 456
457# @FUNCTION: get_running_version
458# @DESCRIPTION:
459# It gets the version of the current running kernel and the result is the same as get_version() if the
460# function can find the sources.
320get_running_version() { 461get_running_version() {
321 KV_FULL=$(uname -r) 462 KV_FULL=$(uname -r)
322 463
323 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 464 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
324 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 465 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
343 484
344 485
345# ebuild check functions 486# ebuild check functions
346# --------------------------------------- 487# ---------------------------------------
347 488
489# @FUNCTION: check_kernel_built
490# @DESCRIPTION:
491# This function verifies that the current kernel sources have been already prepared otherwise it dies.
348check_kernel_built() { 492check_kernel_built() {
349 # if we haven't determined the version yet, we need too. 493 # if we haven't determined the version yet, we need to
494 require_configured_kernel
350 get_version; 495 get_version
351 496
352 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 497 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
353 then 498 then
354 eerror "These sources have not yet been prepared." 499 eerror "These sources have not yet been prepared."
355 eerror "We cannot build against an unprepared tree." 500 eerror "We cannot build against an unprepared tree."
362 eerror "Then please try merging this module again." 507 eerror "Then please try merging this module again."
363 die "Kernel sources need compiling first" 508 die "Kernel sources need compiling first"
364 fi 509 fi
365} 510}
366 511
512# @FUNCTION: check_modules_supported
513# @DESCRIPTION:
514# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
367check_modules_supported() { 515check_modules_supported() {
368 # if we haven't determined the version yet, we need too. 516 # if we haven't determined the version yet, we need too.
517 require_configured_kernel
369 get_version; 518 get_version
370 519
371 if ! linux_chkconfig_builtin "MODULES" 520 if ! linux_chkconfig_builtin "MODULES"
372 then 521 then
373 eerror "These sources do not support loading external modules." 522 eerror "These sources do not support loading external modules."
374 eerror "to be able to use this module please enable \"Loadable modules support\"" 523 eerror "to be able to use this module please enable \"Loadable modules support\""
375 eerror "in your kernel, recompile and then try merging this module again." 524 eerror "in your kernel, recompile and then try merging this module again."
376 die "No support for external modules in ${KV_FULL} config" 525 die "No support for external modules in ${KV_FULL} config"
377 fi 526 fi
378} 527}
379 528
529# @FUNCTION: check_extra_config
530# @DESCRIPTION:
531# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
532# the prefix ~ is not used) doesn't satisfy the directive.
380check_extra_config() { 533check_extra_config() {
381 local config negate error local_error i n
382 local temp_config die reworkmodulenames 534 local config negate die error reworkmodulenames
535 local soft_errors_count=0 hard_errors_count=0 config_required=0
383 536
384 # if we haven't determined the version yet, we need too. 537 # if we haven't determined the version yet, we need to
385 get_version; 538 get_version
386 539
540 # Determine if we really need a .config. The only time when we don't need
541 # one is when all of the CONFIG_CHECK options are prefixed with "~".
542 for config in ${CONFIG_CHECK}
543 do
544 if [[ "${config:0:1}" != "~" ]]; then
545 config_required=1
546 break
547 fi
548 done
549
550 if [[ ${config_required} == 0 ]]; then
551 # In the case where we don't require a .config, we can now bail out
552 # if the user has no .config as there is nothing to do. Otherwise
553 # code later will cause a failure due to missing .config.
554 if ! linux_config_exists; then
555 ewarn "Unable to check for the following kernel config options due"
556 ewarn "to absence of any configured kernel sources:"
557 for config in ${CONFIG_CHECK}; do
558 ewarn " - ${config#\~}"
559 done
560 ewarn "You're on your own to make sure they are set if needed."
561 return 0
562 fi
563 else
564 require_configured_kernel
565 fi
566
387 einfo "Checking for suitable kernel configuration options:" 567 einfo "Checking for suitable kernel configuration options..."
568
388 for config in ${CONFIG_CHECK} 569 for config in ${CONFIG_CHECK}
389 do 570 do
390 # if we specify any fatal, ensure we honor them 571 # if we specify any fatal, ensure we honor them
391 die=1 572 die=1
392 error=0 573 error=0
393 negate=0 574 negate=0
394 reworkmodulenames=0 575 reworkmodulenames=0
395 576
396 if [[ -z ${config//\!*} ]]; then 577 if [[ ${config:0:1} == "~" ]]; then
397 negate=1 578 die=0
398 config=${config:1} 579 config=${config:1}
399 fi 580 elif [[ ${config:0:1} == "@" ]]; then
400 if [[ -z ${config/\@*} ]]; then
401 die=2 581 die=0
402 reworkmodulenames=1 582 reworkmodulenames=1
403 config=${config:1} 583 config=${config:1}
404 fi 584 fi
405 if [[ -z ${config/\~*} ]]; then 585 if [[ ${config:0:1} == "!" ]]; then
406 die=0 586 negate=1
407 config=${config:1} 587 config=${config:1}
408 fi 588 fi
409 589
410 if [[ ${negate} == 1 ]]; then 590 if [[ ${negate} == 1 ]]; then
411 linux_chkconfig_present ${config} && error=2 591 linux_chkconfig_present ${config} && error=2
412 elif [[ ${reworkmodulenames} == 1 ]]; then 592 elif [[ ${reworkmodulenames} == 1 ]]; then
413 temp_config="${config//*:}" 593 local temp_config="${config//*:}" i n
414 config="${config//:*}" 594 config="${config//:*}"
415 if linux_chkconfig_present ${config}; then 595 if linux_chkconfig_present ${config}; then
416 for i in ${MODULE_NAMES}; do 596 for i in ${MODULE_NAMES}; do
417 n="${i//${temp_config}}" 597 n="${i//${temp_config}}"
418 [[ -z ${n//\(*} ]] && \ 598 [[ -z ${n//\(*} ]] && \
422 fi 602 fi
423 else 603 else
424 linux_chkconfig_present ${config} || error=1 604 linux_chkconfig_present ${config} || error=1
425 fi 605 fi
426 606
427 if [[ ${die} == 0 ]]; then
428 ebegin "CONFIG_${config}"
429 eend ${error}
430 else
431 if [[ ${error} > 0 ]]; then 607 if [[ ${error} > 0 ]]; then
608 local report_func="eerror" local_error
432 local_error="ERROR_${config}" 609 local_error="ERROR_${config}"
610 local_error="${!local_error}"
611
612 if [[ -z "${local_error}" ]]; then
613 # using old, deprecated format.
614 local_error="${config}_ERROR"
433 local_error="${!local_error}" 615 local_error="${!local_error}"
434 616 fi
435 if [[ -z "${local_error}" ]]; then 617 if [[ ${die} == 0 && -z "${local_error}" ]]; then
436 # using old, deprecated format. 618 #soft errors can be warnings
437 local_error="${config}_ERROR" 619 local_error="WARNING_${config}"
438 local_error="${!local_error}" 620 local_error="${!local_error}"
621 if [[ -n "${local_error}" ]] ; then
622 report_func="ewarn"
439 fi 623 fi
440
441 if [[ -z "${local_error}" ]]; then
442 [[ ${error} == 1 ]] \
443 && local_error="is not set when it should be." \
444 || local_error="should not be set. But it is."
445 local_error="CONFIG_${config}:\t ${local_error}"
446 fi
447 eerror " ${local_error}"
448 fi 624 fi
625
626 if [[ -z "${local_error}" ]]; then
627 [[ ${error} == 1 ]] \
628 && local_error="is not set when it should be." \
629 || local_error="should not be set. But it is."
630 local_error="CONFIG_${config}:\t ${local_error}"
631 fi
632 if [[ ${die} == 0 ]]; then
633 ${report_func} " ${local_error}"
634 soft_errors_count=$[soft_errors_count + 1]
635 else
636 ${report_func} " ${local_error}"
637 hard_errors_count=$[hard_errors_count + 1]
638 fi
449 fi 639 fi
450 done 640 done
451 641
452 if [[ ${error} > 0 ]]; then 642 if [[ ${hard_errors_count} > 0 ]]; then
453 eerror "Please check to make sure these options are set correctly." 643 eerror "Please check to make sure these options are set correctly."
454 eerror "Failure to do so may cause unexpected problems." 644 eerror "Failure to do so may cause unexpected problems."
455 if [[ ${die} == 1 ]]; then
456 eerror "Once you have satisfied these options, please try merging" 645 eerror "Once you have satisfied these options, please try merging"
457 eerror "this package again." 646 eerror "this package again."
458 die "Incorrect kernel configuration options" 647 die "Incorrect kernel configuration options"
459 fi 648 elif [[ ${soft_errors_count} > 0 ]]; then
649 ewarn "Please check to make sure these options are set correctly."
650 ewarn "Failure to do so may cause unexpected problems."
651 else
652 eend 0
460 fi 653 fi
461} 654}
462 655
463check_zlibinflate() { 656check_zlibinflate() {
464 # if we haven't determined the version yet, we need too. 657 # if we haven't determined the version yet, we need to
658 require_configured_kernel
465 get_version; 659 get_version
466 660
467 # although I restructured this code - I really really really dont support it! 661 # although I restructured this code - I really really really dont support it!
468 662
469 # bug #27882 - zlib routines are only linked into the kernel 663 # bug #27882 - zlib routines are only linked into the kernel
470 # if something compiled into the kernel calls them 664 # if something compiled into the kernel calls them
477 local DEFLATE 671 local DEFLATE
478 672
479 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 673 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
480 674
481 ebegin "checking ZLIB_INFLATE" 675 ebegin "checking ZLIB_INFLATE"
482 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 676 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
483 eend $? 677 eend $?
484 [ "$?" != 0 ] && die 678 [ "$?" != 0 ] && die
485 679
486 ebegin "checking ZLIB_DEFLATE" 680 ebegin "checking ZLIB_DEFLATE"
487 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 681 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
488 eend $? 682 eend $?
489 [ "$?" != 0 ] && die 683 [ "$?" != 0 ] && die
490 684
491 local LINENO_START 685 local LINENO_START
492 local LINENO_END 686 local LINENO_END
530} 724}
531 725
532################################ 726################################
533# Default pkg_setup 727# Default pkg_setup
534# Also used when inheriting linux-mod to force a get_version call 728# Also used when inheriting linux-mod to force a get_version call
535 729# @FUNCTION: linux-info_pkg_setup
730# @DESCRIPTION:
731# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
732# to support the options specified in CONFIG_CHECK (if not null)
536linux-info_pkg_setup() { 733linux-info_pkg_setup() {
537 get_version || die "Unable to calculate Linux Kernel version" 734 get_version || die "Unable to calculate Linux Kernel version"
735
736 if kernel_is 2 4; then
737 if [ "$( gcc-major-version )" -eq "4" ] ; then
738 echo
739 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
740 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
741 echo
742 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
743 ewarn "newer kernel that supports gcc-4."
744 echo
745 ewarn "Also be aware that bugreports about gcc-4 not working"
746 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
747 echo
748 epause 10
749 fi
750 fi
751
538 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 752 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
539} 753}

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