/[gentoo-x86]/eclass/linux-info.eclass
Gentoo

Diff of /eclass/linux-info.eclass

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

Revision 1.3 Revision 1.65
1# Copyright 1999-2004 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 1.3 2004/11/27 11:26:52 johnm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.65 2009/09/06 23:16:37 robbat2 Exp $
4# 4#
5# This eclass provides functions for querying the installed kernel 5# Original author: John Mylchreest <johnm@gentoo.org>
6# source version, selected kernel options etc. 6# Maintainer: kernel-misc@gentoo.org
7# 7#
8# Please direct your bugs to the current eclass maintainer :)
8 9
9ECLASS=linux-info 10# @ECLASS: linux-info.eclass
10INHERITED="$INHERITED $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
25# A Couple of env vars are available to effect usage of this eclass
26# These are as follows:
27
28# @ECLASS-VARIABLE: KERNEL_DIR
29# @DESCRIPTION:
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:
35# A string containing a list of .config options to check for before
36# proceeding with the install.
37#
38# e.g.: CONFIG_CHECK="MTRR"
39#
40# You can also check that an option doesn't exist by
41# prepending it with an exclamation mark (!).
42#
43# e.g.: CONFIG_CHECK="!MTRR"
44#
45# To simply warn about a missing option, prepend a '~'.
46# It may be combined with '!'.
47#
48# In general, most checks should be non-fatal. The only time fatal checks should
49# be used is for building kernel modules or cases that a compile will fail
50# without the option.
51#
52# This is to allow usage of binary kernels, and minimal systems without kernel
53# sources.
54
55# @ECLASS-VARIABLE: ERROR_<CFG>
56# @DESCRIPTION:
57# A string containing the error message to display when the check against CONFIG_CHECK
58# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
59#
60# e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
61
62# @ECLASS-VARIABLE: KBUILD_OUTPUT
63# @DESCRIPTION:
64# A string passed on commandline, or set from the kernel makefile. It contains the directory
65# which is to be used as the kernel object directory.
66
67# There are also a couple of variables which are set by this, and shouldn't be
68# set by hand. These are as follows:
69
70# @ECLASS-VARIABLE: KV_FULL
71# @DESCRIPTION:
72# A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
73
74# @ECLASS-VARIABLE: KV_MAJOR
75# @DESCRIPTION:
76# A read-only variable. It's an integer containing the kernel major version. ie: 2
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
97# KERNEL_DIR is invalid.
98
99# @ECLASS-VARIABLE: KV_OUT_DIR
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.
107
108# And to ensure all the weirdness with crosscompile
109inherit toolchain-funcs versionator
110
111EXPORT_FUNCTIONS pkg_setup
112
113DEPEND=""
114RDEPEND=""
115
116[ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && \
117DEPEND="kernel_linux? ( virtual/linux-sources )"
11 118
12# Overwritable environment Var's 119# Overwritable environment Var's
13# --------------------------------------- 120# ---------------------------------------
14KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" 121KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
15 122
16 123
124# Bug fixes
125# fix to bug #75034
126case ${ARCH} in
127 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
128 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
129esac
130
131# @FUNCTION: set_arch_to_kernel
132# @DESCRIPTION:
133# Set the env ARCH to match what the kernel expects.
134set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
135# @FUNCTION: set_arch_to_portage
136# @DESCRIPTION:
137# Set the env ARCH to match what portage expects.
138set_arch_to_portage() { export ARCH=$(tc-arch); }
139
140# qeinfo "Message"
141# -------------------
142# qeinfo is a quiet einfo call when EBUILD_PHASE
143# should not have visible output.
144qout() {
145 local outputmsg type
146 type=${1}
147 shift
148 outputmsg="${@}"
149 case "${EBUILD_PHASE}" in
150 depend) unset outputmsg;;
151 clean) unset outputmsg;;
152 preinst) unset outputmsg;;
153 esac
154 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
155}
156
157qeinfo() { qout einfo "${@}" ; }
158qeerror() { qout eerror "${@}" ; }
17 159
18# File Functions 160# File Functions
19# --------------------------------------- 161# ---------------------------------------
20 162
21# getfilevar accepts 2 vars as follows: 163# @FUNCTION: getfilevar
22# getfilevar <VARIABLE> <CONFIGFILE> 164# @USAGE: variable configfile
23 165# @RETURN: the value of the variable
166# @DESCRIPTION:
167# It detects the value of the variable defined in the file configfile. This is
168# done by including the configfile, and printing the variable with Make.
169# It WILL break if your makefile has missing dependencies!
24getfilevar() { 170getfilevar() {
25local ERROR 171local ERROR basefname basedname myARCH="${ARCH}"
26 ERROR=0 172 ERROR=0
27 173
28 [ -z "${1}" ] && ERROR=1 174 [ -z "${1}" ] && ERROR=1
29 [ -z "${2}" ] && ERROR=1
30 [ ! -f "${2}" ] && ERROR=1 175 [ ! -f "${2}" ] && ERROR=1
31 176
32 if [ "${ERROR}" = 1 ] 177 if [ "${ERROR}" = 1 ]
33 then 178 then
179 echo -e "\n"
34 eerror "getfilevar requires 2 variables, with the second a valid file." 180 eerror "getfilevar requires 2 variables, with the second a valid file."
35 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 181 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
36 else 182 else
37 grep -e "^$1[= ]" $2 | sed 's: = :=:' | cut -d= -f2- 183 basefname="$(basename ${2})"
38 fi 184 basedname="$(dirname ${2})"
39} 185 unset ARCH
40 186
187 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
188 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
189
190 ARCH=${myARCH}
191 fi
192}
193
194# @FUNCTION: getfilevar_noexec
195# @USAGE: variable configfile
196# @RETURN: the value of the variable
197# @DESCRIPTION:
198# It detects the value of the variable defined in the file configfile.
199# This is done with sed matching an expression only. If the variable is defined,
200# you will run into problems. See getfilevar for those cases.
41getfilevar_isset() { 201getfilevar_noexec() {
202 local ERROR basefname basedname mycat myARCH="${ARCH}"
203 ERROR=0
204 mycat='cat'
205
206 [ -z "${1}" ] && ERROR=1
207 [ ! -f "${2}" ] && ERROR=1
208 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
209
210 if [ "${ERROR}" = 1 ]
211 then
212 echo -e "\n"
213 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
214 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
215 else
216 ${mycat} "${2}" | \
217 sed -n \
218 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
219 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
220 s,[[:space:]]*\$,,g ;
221 p
222 }"
223 fi
224}
225
226
227# @FUNCTION: linux_config_src_exists
228# @RETURN: true or false
229# @DESCRIPTION:
230# It returns true if .config exists in a build directory otherwise false
231linux_config_src_exists() {
232 [ -s "${KV_OUT_DIR}/.config" ]
233}
234
235# @FUNCTION: linux_config_bin_exists
236# @RETURN: true or false
237# @DESCRIPTION:
238# It returns true if .config exists in /proc, otherwise false
239linux_config_bin_exists() {
240 [ -s "/proc/config.gz" ]
241}
242
243# @FUNCTION: linux_config_exists
244# @RETURN: true or false
245# @DESCRIPTION:
246# It returns true if .config exists otherwise false
247#
248# This function MUST be checked before using any of the linux_chkconfig_*
249# functions.
250linux_config_exists() {
251 linux_config_src_exists || linux_config_bin_exists
252}
253
254# @FUNCTION: require_configured_kernel
255# @DESCRIPTION:
256# This function verifies that the current kernel is configured (it checks against the existence of .config)
257# otherwise it dies.
258require_configured_kernel() {
259 if ! linux_config_src_exists; then
260 qeerror "Could not find a usable .config in the kernel source directory."
261 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
262 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
263 qeerror "it points to the necessary object directory so that it might find .config."
264 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
265 fi
266}
267
268# @FUNCTION: linux_chkconfig_present
269# @USAGE: option
270# @RETURN: true or false
271# @DESCRIPTION:
272# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
273# If linux_config_exists returns false, the results of this are UNDEFINED. You
274# MUST call linux_config_exists first.
275linux_chkconfig_present() {
42local RESULT 276local RESULT
43 RESULT="$(getfilevar ${1} ${2})" 277 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
278 local config
279 config="${KV_OUT_DIR}/.config"
280 [ ! -f "${config}" ] && config="/proc/config.gz"
281 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
44 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 282 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
45} 283}
46 284
47getfilevar_ismodule() { 285# @FUNCTION: linux_chkconfig_module
286# @USAGE: option
287# @RETURN: true or false
288# @DESCRIPTION:
289# It checks that CONFIG_<option>=m is present in the current kernel .config
290# If linux_config_exists returns false, the results of this are UNDEFINED. You
291# MUST call linux_config_exists first.
292linux_chkconfig_module() {
48local RESULT 293local RESULT
49 RESULT="$(getfilevar ${1} ${2})" 294 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
295 local config
296 config="${KV_OUT_DIR}/.config"
297 [ ! -f "${config}" ] && config="/proc/config.gz"
298 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
50 [ "${RESULT}" = "m" ] && return 0 || return 1 299 [ "${RESULT}" = "m" ] && return 0 || return 1
51} 300}
52 301
53getfilevar_isbuiltin() { 302# @FUNCTION: linux_chkconfig_builtin
303# @USAGE: option
304# @RETURN: true or false
305# @DESCRIPTION:
306# It checks that CONFIG_<option>=y is present in the current kernel .config
307# If linux_config_exists returns false, the results of this are UNDEFINED. You
308# MUST call linux_config_exists first.
309linux_chkconfig_builtin() {
54local RESULT 310local RESULT
55 RESULT="$(getfilevar ${1} ${2})" 311 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
312 local config
313 config="${KV_OUT_DIR}/.config"
314 [ ! -f "${config}" ] && config="/proc/config.gz"
315 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
56 [ "${RESULT}" = "y" ] && return 0 || return 1 316 [ "${RESULT}" = "y" ] && return 0 || return 1
317}
318
319# @FUNCTION: linux_chkconfig_string
320# @USAGE: option
321# @RETURN: CONFIG_<option>
322# @DESCRIPTION:
323# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
324# If linux_config_exists returns false, the results of this are UNDEFINED. You
325# MUST call linux_config_exists first.
326linux_chkconfig_string() {
327 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
328 local config
329 config="${KV_OUT_DIR}/.config"
330 [ ! -f "${config}" ] && config="/proc/config.gz"
331 getfilevar_noexec "CONFIG_${1}" "${config}"
57} 332}
58 333
59# Versioning Functions 334# Versioning Functions
60# --------------------------------------- 335# ---------------------------------------
61 336
62# kernel_is returns true when the version is the same as the passed version 337# @FUNCTION: kernel_is
338# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
339# @RETURN: true or false
340# @DESCRIPTION:
341# It returns true when the current kernel version satisfies the comparison against the passed version.
342# -eq is the default comparison.
63# 343#
344# @CODE
64# For Example where KV = 2.6.9 345# For Example where KV = 2.6.9
65# kernel_is 2 4 returns false 346# kernel_is 2 4 returns false
66# kernel_is 2 returns true 347# kernel_is 2 returns true
67# kernel_is 2 6 returns true 348# kernel_is 2 6 returns true
68# kernel_is 2 6 8 returns false 349# kernel_is 2 6 8 returns false
69# kernel_is 2 6 9 returns true 350# kernel_is 2 6 9 returns true
70# 351# @CODE
352
71# got the jist yet? 353# got the jist yet?
72 354
73kernel_is() { 355kernel_is() {
74 # if we haven't determined the version yet, we need too. 356 # if we haven't determined the version yet, we need to.
75 get_version; 357 get_version
358 local operator test value x=0 y=0 z=0
359
360 case ${1} in
361 lt) operator="-lt"; shift;;
362 gt) operator="-gt"; shift;;
363 le) operator="-le"; shift;;
364 ge) operator="-ge"; shift;;
365 eq) operator="-eq"; shift;;
366 *) operator="-eq";;
367 esac
368
369 for x in ${@}; do
370 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
371 value="${value}${x}"
372 z=$((${z} + 1))
373
374 case ${z} in
375 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
376 test="${test}${KV_MAJOR}";;
377 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
378 test="${test}${KV_MINOR}";;
379 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
380 test="${test}${KV_PATCH}";;
381 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
382 esac
383 done
76 384
77 local RESULT 385 [ ${test} ${operator} ${value} ] && return 0 || return 1
78 RESULT=1
79
80 if [ -n "${1}" ]
81 then
82 [ "${1}" = "${KV_MAJOR}" ] && RESULT=0
83 fi
84
85 if [ -n "${2}" ]
86 then
87 RESULT=1
88 [ "${2}" = "${KV_MINOR}" ] && RESULT=0
89 fi
90
91 if [ -n "${3}" ]
92 then
93 RESULT=1
94 [ "${3}" = "${KV_PATCH}" ] && RESULT=0
95 fi
96 return ${RESULT}
97} 386}
98 387
388get_localversion() {
389 local lv_list i x
390
391 # ignore files with ~ in it.
392 for i in $(ls ${1}/localversion* 2>/dev/null); do
393 [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
394 done
395
396 for i in ${lv_list}; do
397 x="${x}$(<${i})"
398 done
399 x=${x/ /}
400 echo ${x}
401}
402
403# internal variable, so we know to only print the warning once
404get_version_warning_done=
405
406# @FUNCTION: get_version
407# @DESCRIPTION:
408# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
409# (if KV_FULL is already set it does nothing).
410#
411# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
412#
413# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
414# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
415# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
99get_version() { 416get_version() {
417 local kbuild_output
418
100 # no need to execute this twice assuming KV_FULL is populated. 419 # no need to execute this twice assuming KV_FULL is populated.
101 # we can force by unsetting KV_FULL 420 # we can force by unsetting KV_FULL
102 if [ -n "${KV_FULL}" ] 421 [ -n "${KV_FULL}" ] && return 0
103 then
104 # Lets keep this quiet eh?
105 # einfo "\${KV_FULL} is already set. Not running get_version again"
106 return
107 fi
108 422
109 # if we dont know KV_FULL, then we need too. 423 # if we dont know KV_FULL, then we need too.
110 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 424 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
111 unset KV_DIR 425 unset KV_DIR
112 426
113 # KV_DIR will contain the full path to the sources directory we should use 427 # KV_DIR will contain the full path to the sources directory we should use
428 [ -z "${get_version_warning_done}" ] && \
114 einfo "Determining the location of the kernel source code" 429 qeinfo "Determining the location of the kernel source code"
115 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 430 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
116 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 431 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
117 432
118 if [ -z "${KV_DIR}" ] 433 if [ -z "${KV_DIR}" ]
119 then 434 then
435 if [ -z "${get_version_warning_done}" ]; then
436 get_version_warning_done=1
120 eerror "Unable to find kernel sources at ${KERNEL_DIR}" 437 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
121 die 438 #qeinfo "This package requires Linux sources."
439 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
440 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
441 qeinfo "(or the kernel you wish to build against)."
442 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
443 else
444 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
445 fi
122 fi 446 fi
123 447 return 1
448 fi
449
450 if [ -z "${get_version_warning_done}" ]; then
451 qeinfo "Found kernel source directory:"
452 qeinfo " ${KV_DIR}"
453 fi
454
455 if [ ! -s "${KV_DIR}/Makefile" ]
456 then
457 if [ -z "${get_version_warning_done}" ]; then
458 get_version_warning_done=1
459 qeerror "Could not find a Makefile in the kernel source directory."
460 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
461 fi
462 return 1
463 fi
464
465 # OK so now we know our sources directory, but they might be using
466 # KBUILD_OUTPUT, and we need this for .config and localversions-*
467 # so we better find it eh?
468 # do we pass KBUILD_OUTPUT on the CLI?
469 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
470
471 # And if we didn't pass it, we can take a nosey in the Makefile
472 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
473 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
474
124 # And contrary to existing functions I feel we shouldn't trust the 475 # And contrary to existing functions I feel we shouldn't trust the
125 # directory name to find version information as this seems insane. 476 # directory name to find version information as this seems insane.
126 # so we parse ${KV_DIR}/Makefile 477 # so we parse ${KV_DIR}/Makefile
127 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 478 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
128 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 479 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
129 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 480 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
130 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 481 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
482
483 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
484 then
485 if [ -z "${get_version_warning_done}" ]; then
486 get_version_warning_done=1
487 qeerror "Could not detect kernel version."
488 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
489 fi
490 return 1
491 fi
492
131 # and in newer versions we can also pull LOCALVERSION if it is set. 493 # and in newer versions we can also pull LOCALVERSION if it is set.
132 KV_LOCAL="$(cat ${KV_DIR}/localversion* 2>/dev/null)$(getfilevar CONFIG_LOCALVERSION ${KV_DIR}/.config | sed 's:"::g')" 494 # but before we do this, we need to find if we use a different object directory.
133 495 # This *WILL* break if the user is using localversions, but we assume it was
496 # caught before this if they are.
497 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
498 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
499
500 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
501 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
502 if [ -n "${KV_OUT_DIR}" ];
503 then
504 qeinfo "Found kernel object directory:"
505 qeinfo " ${KV_OUT_DIR}"
506
507 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
508 fi
509 # and if we STILL have not got it, then we better just set it to KV_DIR
510 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
511
512 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
513 if linux_config_exists; then
514 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
515 KV_LOCAL="${KV_LOCAL//\"/}"
516
517 # For things like git that can append extra stuff:
518 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
519 linux_chkconfig_builtin LOCALVERSION_AUTO &&
520 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
521 fi
522
134 # And we should set KV_FULL to the full expanded version 523 # And we should set KV_FULL to the full expanded version
135 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 524 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
136 525
137 if [ -z "${KV_FULL}" ] 526 qeinfo "Found sources for kernel version:"
138 then 527 qeinfo " ${KV_FULL}"
139 eerror "We are unable to find a usable kernel source tree in ${KV_DIR}" 528
140 eerror "Please check a kernel source exists in this directory." 529 return 0
141 die 530}
531
532# @FUNCTION: get_running_version
533# @DESCRIPTION:
534# It gets the version of the current running kernel and the result is the same as get_version() if the
535# function can find the sources.
536get_running_version() {
537 KV_FULL=$(uname -r)
538
539 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
540 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
541 unset KV_FULL
542 get_version
543 return $?
544 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
545 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
546 unset KV_FULL
547 get_version
548 return $?
142 else 549 else
143 einfo "Found kernel source directory:" 550 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
144 einfo " ${KV_DIR}" 551 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
145 einfo "with sources for kernel version:" 552 KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
146 einfo " ${KV_FULL}" 553 KV_PATCH=${KV_PATCH//-*}
554 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
555 && KV_EXTRA="-${KV_FULL#*-}"
147 fi 556 fi
557 return 0
148} 558}
149
150
151 559
152 560
153# ebuild check functions 561# ebuild check functions
154# --------------------------------------- 562# ---------------------------------------
155 563
564# @FUNCTION: check_kernel_built
565# @DESCRIPTION:
566# This function verifies that the current kernel sources have been already prepared otherwise it dies.
156check_kernel_built() { 567check_kernel_built() {
157 # if we haven't determined the version yet, we need too. 568 # if we haven't determined the version yet, we need to
569 require_configured_kernel
158 get_version; 570 get_version
159 571
160 if [ ! -f "${KV_DIR}/System.map" ] 572 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
161 then 573 then
162 eerror "These sources have not yet been compiled." 574 eerror "These sources have not yet been prepared."
163 eerror "We cannot build against an uncompiled tree." 575 eerror "We cannot build against an unprepared tree."
164 eerror "To resolve this, please type the following:" 576 eerror "To resolve this, please type the following:"
165 eerror 577 eerror
166 eerror "# cd ${KV_DIR}" 578 eerror "# cd ${KV_DIR}"
167 eerror "# make oldconfig" 579 eerror "# make oldconfig"
168 eerror "# make bzImage modules modules_install" 580 eerror "# make modules_prepare"
169 eerror 581 eerror
170 eerror "Then please try merging this module again." 582 eerror "Then please try merging this module again."
171 die "Kernel sources need compiling first" 583 die "Kernel sources need compiling first"
172 fi 584 fi
173} 585}
174 586
587# @FUNCTION: check_modules_supported
588# @DESCRIPTION:
589# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
175check_modules_supported() { 590check_modules_supported() {
176 # if we haven't determined the version yet, we need too. 591 # if we haven't determined the version yet, we need too.
592 require_configured_kernel
177 get_version; 593 get_version
178 594
179 getfilevar_isset CONFIG_MODULES ${KV_DIR}/.config 595 if ! linux_chkconfig_builtin "MODULES"
180 if [ "$?" != 0 ]
181 then 596 then
182 eerror "These sources do not support loading external modules." 597 eerror "These sources do not support loading external modules."
183 eerror "to be able to use this module please enable \"Loadable modules support\"" 598 eerror "to be able to use this module please enable \"Loadable modules support\""
184 eerror "in your kernel, recompile and then try merging this module again." 599 eerror "in your kernel, recompile and then try merging this module again."
185 die No support for external modules in ${KV_FUll} config 600 die "No support for external modules in ${KV_FULL} config"
186 fi 601 fi
187} 602}
188 603
604# @FUNCTION: check_extra_config
605# @DESCRIPTION:
606# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
607# the prefix ~ is not used) doesn't satisfy the directive.
189check_extra_config() { 608check_extra_config() {
190local config negate error 609 local config negate die error reworkmodulenames
610 local soft_errors_count=0 hard_errors_count=0 config_required=0
191 611
192 # if we haven't determined the version yet, we need too. 612 # if we haven't determined the version yet, we need to
193 get_version; 613 get_version
194 614
195 einfo "Checking for suitable kernel configuration options" 615 # Determine if we really need a .config. The only time when we don't need
616 # one is when all of the CONFIG_CHECK options are prefixed with "~".
196 for config in ${CONFIG_CHECK} 617 for config in ${CONFIG_CHECK}
197 do 618 do
198 negate="${config:0:1}" 619 if [[ "${config:0:1}" != "~" ]]; then
199 if [ "${negate}" == "!" ]; 620 config_required=1
200 then 621 break
622 fi
623 done
624
625 if [[ ${config_required} == 0 ]]; then
626 # In the case where we don't require a .config, we can now bail out
627 # if the user has no .config as there is nothing to do. Otherwise
628 # code later will cause a failure due to missing .config.
629 if ! linux_config_exists; then
630 ewarn "Unable to check for the following kernel config options due"
631 ewarn "to absence of any configured kernel sources or compiled"
632 ewarn "config:"
633 for config in ${CONFIG_CHECK}; do
634 ewarn " - ${config#\~}"
635 done
636 ewarn "You're on your own to make sure they are set if needed."
637 return 0
638 fi
639 else
640 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
641 fi
642
643 einfo "Checking for suitable kernel configuration options..."
644
645 for config in ${CONFIG_CHECK}
646 do
647 # if we specify any fatal, ensure we honor them
648 die=1
649 error=0
650 negate=0
651 reworkmodulenames=0
652
653 if [[ ${config:0:1} == "~" ]]; then
654 die=0
201 config="${config:1}" 655 config=${config:1}
202 if getfilevar_isset ${config} ${KV_DIR}/.config ; 656 elif [[ ${config:0:1} == "@" ]]; then
203 then 657 die=0
204 eerror " ${config}:\tshould not be set in the kernel configuration, but it is." 658 reworkmodulenames=1
659 config=${config:1}
660 fi
661 if [[ ${config:0:1} == "!" ]]; then
662 negate=1
663 config=${config:1}
664 fi
665
666 if [[ ${negate} == 1 ]]; then
667 linux_chkconfig_present ${config} && error=2
668 elif [[ ${reworkmodulenames} == 1 ]]; then
669 local temp_config="${config//*:}" i n
670 config="${config//:*}"
671 if linux_chkconfig_present ${config}; then
672 for i in ${MODULE_NAMES}; do
673 n="${i//${temp_config}}"
674 [[ -z ${n//\(*} ]] && \
675 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
676 done
205 error=1 677 error=2
206 fi 678 fi
207 else 679 else
208 if ! getfilevar_isset ${config} ${KV_DIR}/.config ; 680 linux_chkconfig_present ${config} || error=1
209 then 681 fi
210 eerror " ${config}:\tshould be set in the kernel configuration, but isn't" 682
211 error=1 683 if [[ ${error} > 0 ]]; then
684 local report_func="eerror" local_error
685 local_error="ERROR_${config}"
686 local_error="${!local_error}"
687
688 if [[ -z "${local_error}" ]]; then
689 # using old, deprecated format.
690 local_error="${config}_ERROR"
691 local_error="${!local_error}"
212 fi 692 fi
693 if [[ ${die} == 0 && -z "${local_error}" ]]; then
694 #soft errors can be warnings
695 local_error="WARNING_${config}"
696 local_error="${!local_error}"
697 if [[ -n "${local_error}" ]] ; then
698 report_func="ewarn"
699 fi
700 fi
701
702 if [[ -z "${local_error}" ]]; then
703 [[ ${error} == 1 ]] \
704 && local_error="is not set when it should be." \
705 || local_error="should not be set. But it is."
706 local_error="CONFIG_${config}:\t ${local_error}"
707 fi
708 if [[ ${die} == 0 ]]; then
709 ${report_func} " ${local_error}"
710 soft_errors_count=$[soft_errors_count + 1]
711 else
712 ${report_func} " ${local_error}"
713 hard_errors_count=$[hard_errors_count + 1]
714 fi
213 fi 715 fi
214 done 716 done
215 717
216 if [ -n "${error}" ] ; 718 if [[ ${hard_errors_count} > 0 ]]; then
217 then
218 eerror "Please check to make sure these options are set correctly." 719 eerror "Please check to make sure these options are set correctly."
720 eerror "Failure to do so may cause unexpected problems."
219 eerror "Once you have satisfied these options, please try merging" 721 eerror "Once you have satisfied these options, please try merging"
220 eerror "this package again." 722 eerror "this package again."
221 die Incorrect kernel configuration options 723 die "Incorrect kernel configuration options"
724 elif [[ ${soft_errors_count} > 0 ]]; then
725 ewarn "Please check to make sure these options are set correctly."
726 ewarn "Failure to do so may cause unexpected problems."
727 else
728 eend 0
222 fi 729 fi
223} 730}
224 731
225check_zlibinflate() { 732check_zlibinflate() {
226 # if we haven't determined the version yet, we need too. 733 # if we haven't determined the version yet, we need to
734 require_configured_kernel
227 get_version; 735 get_version
228 736
229 # although I restructured this code - I really really really dont support it! 737 # although I restructured this code - I really really really dont support it!
230 738
231 # bug #27882 - zlib routines are only linked into the kernel 739 # bug #27882 - zlib routines are only linked into the kernel
232 # if something compiled into the kernel calls them 740 # if something compiled into the kernel calls them
233 # 741 #
234 # plus, for the cloop module, it appears that there's no way 742 # plus, for the cloop module, it appears that there's no way
235 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS 743 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
236 # is on 744 # is on
237 745
238local INFLATE 746 local INFLATE
239local DEFLATE 747 local DEFLATE
240 748
241 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 749 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
242 750
243 ebegin "checking ZLIB_INFLATE" 751 ebegin "checking ZLIB_INFLATE"
244 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 752 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
245 eend $? 753 eend $?
246 [ "$?" != 0 ] && die 754 [ "$?" != 0 ] && die
247 755
248 ebegin "checking ZLIB_DEFLATE" 756 ebegin "checking ZLIB_DEFLATE"
249 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 757 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
250 eend $? 758 eend $?
251 [ "$?" != 0 ] && die 759 [ "$?" != 0 ] && die
252 760
253
254 local LINENO_START 761 local LINENO_START
255 local LINENO_END 762 local LINENO_END
256 local SYMBOLS 763 local SYMBOLS
257 local x 764 local x
258 765
259 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 766 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
260 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" 767 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
261 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 768 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
262 (( LINENO_END = $LINENO_END - 1 )) 769 (( LINENO_END = $LINENO_END - 1 ))
263 SYMBOLS="$(head -n $LINENO_END ${KERNEL_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" 770 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
264 771
265 # okay, now we have a list of symbols 772 # okay, now we have a list of symbols
266 # we need to check each one in turn, to see whether it is set or not 773 # we need to check each one in turn, to see whether it is set or not
267 for x in $SYMBOLS ; do 774 for x in $SYMBOLS ; do
268 if [ "${!x}" = "y" ]; then 775 if [ "${!x}" = "y" ]; then
269 # we have a winner! 776 # we have a winner!
270 einfo "${x} ensures zlib is linked into your kernel - excellent" 777 einfo "${x} ensures zlib is linked into your kernel - excellent"
271 return 0 778 return 0
272 fi 779 fi
273 done 780 done
274 781
275 eerror 782 eerror
276 eerror "This kernel module requires ZLIB library support." 783 eerror "This kernel module requires ZLIB library support."
277 eerror "You have enabled zlib support in your kernel, but haven't enabled" 784 eerror "You have enabled zlib support in your kernel, but haven't enabled"
278 eerror "enabled any option that will ensure that zlib is linked into your" 785 eerror "enabled any option that will ensure that zlib is linked into your"
279 eerror "kernel." 786 eerror "kernel."
289 eerror "Please remember to recompile and install your kernel, and reboot" 796 eerror "Please remember to recompile and install your kernel, and reboot"
290 eerror "into your new kernel before attempting to load this kernel module." 797 eerror "into your new kernel before attempting to load this kernel module."
291 798
292 die "Kernel doesn't include zlib support" 799 die "Kernel doesn't include zlib support"
293} 800}
801
802################################
803# Default pkg_setup
804# Also used when inheriting linux-mod to force a get_version call
805# @FUNCTION: linux-info_pkg_setup
806# @DESCRIPTION:
807# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
808# to support the options specified in CONFIG_CHECK (if not null)
809linux-info_pkg_setup() {
810 get_version
811 if [[ $rc -ne 0 ]]; then
812 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
813 get_running_version
814 fi
815
816 if kernel_is 2 4; then
817 if [ "$( gcc-major-version )" -eq "4" ] ; then
818 echo
819 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
820 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
821 echo
822 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
823 ewarn "newer kernel that supports gcc-4."
824 echo
825 ewarn "Also be aware that bugreports about gcc-4 not working"
826 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
827 echo
828 epause 10
829 fi
830 fi
831
832 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
833}

Legend:
Removed from v.1.3  
changed lines
  Added in v.1.65

  ViewVC Help
Powered by ViewVC 1.1.20