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Revision 1.1 Revision 1.61
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 1.1 2004/11/24 16:36:38 johnm 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# 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 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.
20
21# A Couple of env vars are available to effect usage of this eclass
22# These are as follows:
23
24# @ECLASS-VARIABLE: KERNEL_DIR
25# @DESCRIPTION:
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:
31# A string containing a list of .config options to check for before
32# proceeding with the install.
33#
34# e.g.: CONFIG_CHECK="MTRR"
35#
36# You can also check that an option doesn't exist by
37# prepending it with an exclamation mark (!).
38#
39# e.g.: CONFIG_CHECK="!MTRR"
40#
41# To simply warn about a missing option, prepend a '~'.
42
43# @ECLASS-VARIABLE: ERROR_<CFG>
44# @DESCRIPTION:
45# A string containing the error message to display when the check against CONFIG_CHECK
46# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
47#
48# e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
49
50# @ECLASS-VARIABLE: KBUILD_OUTPUT
51# @DESCRIPTION:
52# A string passed on commandline, or set from the kernel makefile. It contains the directory
53# which is to be used as the kernel object directory.
54
55# There are also a couple of variables which are set by this, and shouldn't be
56# set by hand. These are as follows:
57
58# @ECLASS-VARIABLE: KV_FULL
59# @DESCRIPTION:
60# A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
61
62# @ECLASS-VARIABLE: KV_MAJOR
63# @DESCRIPTION:
64# A read-only variable. It's an integer containing the kernel major version. ie: 2
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
85# KERNEL_DIR is invalid.
86
87# @ECLASS-VARIABLE: KV_OUT_DIR
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.
91
92# And to ensure all the weirdness with crosscompile
93inherit toolchain-funcs versionator
94
95EXPORT_FUNCTIONS pkg_setup
96
97DEPEND="kernel_linux? ( virtual/linux-sources )"
98RDEPEND=""
11 99
12# Overwritable environment Var's 100# Overwritable environment Var's
13# --------------------------------------- 101# ---------------------------------------
14KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" 102KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
15 103
16 104
105# Bug fixes
106# fix to bug #75034
107case ${ARCH} in
108 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
109 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
110esac
111
112# @FUNCTION: set_arch_to_kernel
113# @DESCRIPTION:
114# Set the env ARCH to match what the kernel expects.
115set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
116# @FUNCTION: set_arch_to_portage
117# @DESCRIPTION:
118# Set the env ARCH to match what portage expects.
119set_arch_to_portage() { export ARCH=$(tc-arch); }
120
121# qeinfo "Message"
122# -------------------
123# qeinfo is a quiet einfo call when EBUILD_PHASE
124# should not have visible output.
125qout() {
126 local outputmsg type
127 type=${1}
128 shift
129 outputmsg="${@}"
130 case "${EBUILD_PHASE}" in
131 depend) unset outputmsg;;
132 clean) unset outputmsg;;
133 preinst) unset outputmsg;;
134 esac
135 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
136}
137
138qeinfo() { qout einfo "${@}" ; }
139qeerror() { qout eerror "${@}" ; }
17 140
18# File Functions 141# File Functions
19# --------------------------------------- 142# ---------------------------------------
20 143
21# getfilevar accepts 2 vars as follows: 144# @FUNCTION: getfilevar
22# getfilevar <VARIABLE> <CONFIGFILE> 145# @USAGE: variable configfile
23 146# @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!
24getfilevar() { 151getfilevar() {
25local ERROR 152local ERROR basefname basedname myARCH="${ARCH}"
26 ERROR=0 153 ERROR=0
27 154
28 [ -z "${1}" ] && ERROR=1 155 [ -z "${1}" ] && ERROR=1
29 [ -z "${2}" ] && ERROR=1
30 [ ! -f "${2}" ] && ERROR=1 156 [ ! -f "${2}" ] && ERROR=1
31 157
32 if [ "${ERROR}" = 1 ] 158 if [ "${ERROR}" = 1 ]
33 then 159 then
160 echo -e "\n"
34 eerror "getfilevar requires 2 variables, with the second a valid file." 161 eerror "getfilevar requires 2 variables, with the second a valid file."
35 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 162 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
36 else 163 else
37 grep -e "^$1" $2 | sed 's: = :=:' | cut -d= -f2- 164 basefname="$(basename ${2})"
38 fi 165 basedname="$(dirname ${2})"
39} 166 unset ARCH
40 167
168 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
169 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
170
171 ARCH=${myARCH}
172 fi
173}
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.
41getfilevar_isset() { 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 ${KV_OUT_DIR}"
225 fi
226}
227
228# @FUNCTION: linux_chkconfig_present
229# @USAGE: option
230# @RETURN: true or false
231# @DESCRIPTION:
232# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
233linux_chkconfig_present() {
42local RESULT 234local RESULT
43 RESULT="$(getfilevar ${1} ${2})" 235 require_configured_kernel
236 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)"
44 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 237 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
45} 238}
46 239
47getfilevar_ismodule() { 240# @FUNCTION: linux_chkconfig_module
241# @USAGE: option
242# @RETURN: true or false
243# @DESCRIPTION:
244# It checks that CONFIG_<option>=m is present in the current kernel .config
245linux_chkconfig_module() {
48local RESULT 246local RESULT
49 RESULT="$(getfilevar ${1} ${2})" 247 require_configured_kernel
248 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)"
50 [ "${RESULT}" = "m" ] && return 0 || return 1 249 [ "${RESULT}" = "m" ] && return 0 || return 1
51} 250}
52 251
53getfilevar_isbuiltin() { 252# @FUNCTION: linux_chkconfig_builtin
253# @USAGE: option
254# @RETURN: true or false
255# @DESCRIPTION:
256# It checks that CONFIG_<option>=y is present in the current kernel .config
257linux_chkconfig_builtin() {
54local RESULT 258local RESULT
55 RESULT="$(getfilevar ${1} ${2})" 259 require_configured_kernel
260 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)"
56 [ "${RESULT}" = "y" ] && return 0 || return 1 261 [ "${RESULT}" = "y" ] && return 0 || return 1
262}
263
264# @FUNCTION: linux_chkconfig_string
265# @USAGE: option
266# @RETURN: CONFIG_<option>
267# @DESCRIPTION:
268# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
269linux_chkconfig_string() {
270 require_configured_kernel
271 getfilevar_noexec "CONFIG_${1}" "${KV_OUT_DIR}/.config"
57} 272}
58 273
59# Versioning Functions 274# Versioning Functions
60# --------------------------------------- 275# ---------------------------------------
61 276
62# 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.
63# 283#
284# @CODE
64# For Example where KV = 2.6.9 285# For Example where KV = 2.6.9
65# kernel_is 2 4 returns false 286# kernel_is 2 4 returns false
66# kernel_is 2 returns true 287# kernel_is 2 returns true
67# kernel_is 2 6 returns true 288# kernel_is 2 6 returns true
68# kernel_is 2 6 8 returns false 289# kernel_is 2 6 8 returns false
69# kernel_is 2 6 9 returns true 290# kernel_is 2 6 9 returns true
70# 291# @CODE
292
71# got the jist yet? 293# got the jist yet?
72 294
73kernel_is() { 295kernel_is() {
74 # if we haven't determined the version yet, we need too. 296 # if we haven't determined the version yet, we need to.
75 get_version; 297 get_version
298 local operator test value x=0 y=0 z=0
299
300 case ${1} in
301 lt) operator="-lt"; shift;;
302 gt) operator="-gt"; shift;;
303 le) operator="-le"; shift;;
304 ge) operator="-ge"; shift;;
305 eq) operator="-eq"; shift;;
306 *) operator="-eq";;
307 esac
308
309 for x in ${@}; do
310 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
311 value="${value}${x}"
312 z=$((${z} + 1))
313
314 case ${z} in
315 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
316 test="${test}${KV_MAJOR}";;
317 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
318 test="${test}${KV_MINOR}";;
319 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
320 test="${test}${KV_PATCH}";;
321 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
322 esac
323 done
76 324
77 local RESULT 325 [ ${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} 326}
98 327
328get_localversion() {
329 local lv_list i x
330
331 # ignore files with ~ in it.
332 for i in $(ls ${1}/localversion* 2>/dev/null); do
333 [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
334 done
335
336 for i in ${lv_list}; do
337 x="${x}$(<${i})"
338 done
339 x=${x/ /}
340 echo ${x}
341}
342
343# @FUNCTION: get_version
344# @DESCRIPTION:
345# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
346# (if KV_FULL is already set it does nothing).
347#
348# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
349#
350# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
351# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
352# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
99get_version() { 353get_version() {
354 local kbuild_output
355
100 # no need to execute this twice assuming KV_FULL is populated. 356 # no need to execute this twice assuming KV_FULL is populated.
101 # we can force by unsetting KV_FULL 357 # we can force by unsetting KV_FULL
102 if [ -n "${KV_FULL}" ] 358 [ -n "${KV_FULL}" ] && return 0
103 then
104 # Lets keep this quiet eh?
105 # einfo "\${KV_FULL} is already set. Not running get_version again"
106 return
107 fi
108 359
109 # if we dont know KV_FULL, then we need too. 360 # if we dont know KV_FULL, then we need too.
110 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 361 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
111 unset KV_DIR 362 unset KV_DIR
112 363
113 # KV_DIR will contain the full path to the sources directory we should use 364 # KV_DIR will contain the full path to the sources directory we should use
114 einfo "Determining the location of the kernel source code" 365 qeinfo "Determining the location of the kernel source code"
115 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 366 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
116 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 367 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
117 368
118 if [ -z "${KV_DIR}" ] 369 if [ -z "${KV_DIR}" ]
119 then 370 then
120 eerror "Unable to find kernel sources at ${KERNEL_DIR}" 371 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
121 die 372 qeinfo "This package requires Linux sources."
373 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
374 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
375 qeinfo "(or the kernel you wish to build against)."
376 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
377 else
378 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
122 fi 379 fi
123 380 return 1
381 fi
382
383 qeinfo "Found kernel source directory:"
384 qeinfo " ${KV_DIR}"
385
386 if [ ! -s "${KV_DIR}/Makefile" ]
387 then
388 qeerror "Could not find a Makefile in the kernel source directory."
389 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
390 return 1
391 fi
392
393 # OK so now we know our sources directory, but they might be using
394 # KBUILD_OUTPUT, and we need this for .config and localversions-*
395 # so we better find it eh?
396 # do we pass KBUILD_OUTPUT on the CLI?
397 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
398
399 # And if we didn't pass it, we can take a nosey in the Makefile
400 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
401 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
402
124 # 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
125 # directory name to find version information as this seems insane. 404 # directory name to find version information as this seems insane.
126 # so we parse ${KV_DIR}/Makefile 405 # so we parse ${KV_DIR}/Makefile
127 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 406 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
128 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 407 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
129 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 408 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
130 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 409 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
410
411 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
412 then
413 qeerror "Could not detect kernel version."
414 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
415 return 1
416 fi
417
131 # and in newer versions we can also pull LOCALVERSION if it is set. 418 # and in newer versions we can also pull LOCALVERSION if it is set.
132 KV_LOCAL="$(cat ${KV_DIR}/localversion* 2>/dev/null)$(getfilevar CONFIG_LOCALVERSION ${KV_DIR}/.config | sed 's:"::g')" 419 # but before we do this, we need to find if we use a different object directory.
133 420 # This *WILL* break if the user is using localversions, but we assume it was
421 # caught before this if they are.
422 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
423 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
424
425 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
426 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
427 if [ -n "${KV_OUT_DIR}" ];
428 then
429 qeinfo "Found kernel object directory:"
430 qeinfo " ${KV_OUT_DIR}"
431
432 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
433 fi
434 # and if we STILL have not got it, then we better just set it to KV_DIR
435 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
436
437 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
438 if linux_config_exists; then
439 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
440 KV_LOCAL="${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 ${KV_DIR})"
446 fi
447
134 # And we should set KV_FULL to the full expanded version 448 # And we should set KV_FULL to the full expanded version
135 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 449 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
136 450
137 if [ -z "${KV_FULL}" ] 451 qeinfo "Found sources for kernel version:"
138 then 452 qeinfo " ${KV_FULL}"
139 eerror "We are unable to find a usable kernel source tree in ${KV_DIR}" 453
140 eerror "Please check a kernel source exists in this directory." 454 return 0
141 die 455}
456
457# @FUNCTION: get_running_version
458# @DESCRIPTION:
459# It gets the version of the current running kernel and the result is the same as get_version() if the
460# function can find the sources.
461get_running_version() {
462 KV_FULL=$(uname -r)
463
464 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
465 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
466 unset KV_FULL
467 get_version
468 return $?
469 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
470 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
471 unset KV_FULL
472 get_version
473 return $?
142 else 474 else
143 einfo "Found kernel source directory:" 475 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
144 einfo " ${KV_DIR}" 476 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
145 einfo "with sources for kernel version:" 477 KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
146 einfo " ${KV_FULL}" 478 KV_PATCH=${KV_PATCH//-*}
479 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
480 && KV_EXTRA="-${KV_FULL#*-}"
147 fi 481 fi
482 return 0
148} 483}
149
150
151 484
152 485
153# ebuild check functions 486# ebuild check functions
154# --------------------------------------- 487# ---------------------------------------
155 488
489# @FUNCTION: check_kernel_built
490# @DESCRIPTION:
491# This function verifies that the current kernel sources have been already prepared otherwise it dies.
156check_kernel_built() { 492check_kernel_built() {
157 # if we haven't determined the version yet, we need too. 493 # if we haven't determined the version yet, we need to
494 require_configured_kernel
158 get_version; 495 get_version
159 496
160 if [ ! -f "${KV_DIR}/System.map" ] 497 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
161 then 498 then
162 eerror "These sources have not yet been compiled." 499 eerror "These sources have not yet been prepared."
163 eerror "We cannot build against an uncompiled tree." 500 eerror "We cannot build against an unprepared tree."
164 eerror "To resolve this, please type the following:" 501 eerror "To resolve this, please type the following:"
165 eerror 502 eerror
166 eerror "# cd ${KV_DIR}" 503 eerror "# cd ${KV_DIR}"
167 eerror "# make oldconfig" 504 eerror "# make oldconfig"
168 eerror "# make bzImage modules modules_install" 505 eerror "# make modules_prepare"
169 eerror 506 eerror
170 eerror "Then please try merging this module again." 507 eerror "Then please try merging this module again."
171 die "Kernel sources need compiling first" 508 die "Kernel sources need compiling first"
172 fi 509 fi
173} 510}
174 511
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.
175check_modules_supported() { 515check_modules_supported() {
176 # 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
177 get_version; 518 get_version
178 519
179 getfilevar_isset CONFIG_MODULES ${KV_DIR}/.config 520 if ! linux_chkconfig_builtin "MODULES"
180 if [ "$?" != 0 ]
181 then 521 then
182 eerror "These sources do not support loading external modules." 522 eerror "These sources do not support loading external modules."
183 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\""
184 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."
525 die "No support for external modules in ${KV_FULL} config"
526 fi
527}
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.
533check_extra_config() {
534 local config negate die error reworkmodulenames
535 local soft_errors_count=0 hard_errors_count=0 config_required=0
536
537 # if we haven't determined the version yet, we need to
538 get_version
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
567 einfo "Checking for suitable kernel configuration options..."
568
569 for config in ${CONFIG_CHECK}
570 do
571 # if we specify any fatal, ensure we honor them
572 die=1
573 error=0
574 negate=0
575 reworkmodulenames=0
576
577 if [[ ${config:0:1} == "~" ]]; then
578 die=0
579 config=${config:1}
580 elif [[ ${config:0:1} == "@" ]]; then
581 die=0
582 reworkmodulenames=1
583 config=${config:1}
584 fi
585 if [[ ${config:0:1} == "!" ]]; then
586 negate=1
587 config=${config:1}
588 fi
589
590 if [[ ${negate} == 1 ]]; then
591 linux_chkconfig_present ${config} && error=2
592 elif [[ ${reworkmodulenames} == 1 ]]; then
593 local temp_config="${config//*:}" i n
594 config="${config//:*}"
595 if linux_chkconfig_present ${config}; then
596 for i in ${MODULE_NAMES}; do
597 n="${i//${temp_config}}"
598 [[ -z ${n//\(*} ]] && \
599 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
600 done
601 error=2
602 fi
603 else
604 linux_chkconfig_present ${config} || error=1
605 fi
606
607 if [[ ${error} > 0 ]]; then
608 local report_func="eerror" local_error
609 local_error="ERROR_${config}"
610 local_error="${!local_error}"
611
612 if [[ -z "${local_error}" ]]; then
613 # using old, deprecated format.
614 local_error="${config}_ERROR"
615 local_error="${!local_error}"
616 fi
617 if [[ ${die} == 0 && -z "${local_error}" ]]; then
618 #soft errors can be warnings
619 local_error="WARNING_${config}"
620 local_error="${!local_error}"
621 if [[ -n "${local_error}" ]] ; then
622 report_func="ewarn"
623 fi
624 fi
625
626 if [[ -z "${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
639 fi
640 done
641
642 if [[ ${hard_errors_count} > 0 ]]; then
643 eerror "Please check to make sure these options are set correctly."
644 eerror "Failure to do so may cause unexpected problems."
645 eerror "Once you have satisfied these options, please try merging"
646 eerror "this package again."
647 die "Incorrect kernel configuration options"
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
185 fi 653 fi
186} 654}
187 655
188check_zlibinflate() { 656check_zlibinflate() {
189 # 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
190 get_version; 659 get_version
191 660
192 # 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!
193 662
194 # bug #27882 - zlib routines are only linked into the kernel 663 # bug #27882 - zlib routines are only linked into the kernel
195 # if something compiled into the kernel calls them 664 # if something compiled into the kernel calls them
196 # 665 #
197 # plus, for the cloop module, it appears that there's no way 666 # plus, for the cloop module, it appears that there's no way
198 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS 667 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
199 # is on 668 # is on
200 669
201local INFLATE 670 local INFLATE
202local DEFLATE 671 local DEFLATE
203 672
204 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 673 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
205 674
206 ebegin "checking ZLIB_INFLATE" 675 ebegin "checking ZLIB_INFLATE"
207 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 676 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
208 eend $? 677 eend $?
209 [ "$?" != 0 ] && die 678 [ "$?" != 0 ] && die
210 679
211 ebegin "checking ZLIB_DEFLATE" 680 ebegin "checking ZLIB_DEFLATE"
212 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 681 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
213 eend $? 682 eend $?
214 [ "$?" != 0 ] && die 683 [ "$?" != 0 ] && die
215 684
216
217 local LINENO_START 685 local LINENO_START
218 local LINENO_END 686 local LINENO_END
219 local SYMBOLS 687 local SYMBOLS
220 local x 688 local x
221 689
222 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 690 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
223 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" 691 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
224 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 692 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
225 (( LINENO_END = $LINENO_END - 1 )) 693 (( LINENO_END = $LINENO_END - 1 ))
226 SYMBOLS="$(head -n $LINENO_END ${KERNEL_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" 694 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
227 695
228 # okay, now we have a list of symbols 696 # okay, now we have a list of symbols
229 # we need to check each one in turn, to see whether it is set or not 697 # we need to check each one in turn, to see whether it is set or not
230 for x in $SYMBOLS ; do 698 for x in $SYMBOLS ; do
231 if [ "${!x}" = "y" ]; then 699 if [ "${!x}" = "y" ]; then
232 # we have a winner! 700 # we have a winner!
233 einfo "${x} ensures zlib is linked into your kernel - excellent" 701 einfo "${x} ensures zlib is linked into your kernel - excellent"
234 return 0 702 return 0
235 fi 703 fi
236 done 704 done
237 705
238 eerror 706 eerror
239 eerror "This kernel module requires ZLIB library support." 707 eerror "This kernel module requires ZLIB library support."
240 eerror "You have enabled zlib support in your kernel, but haven't enabled" 708 eerror "You have enabled zlib support in your kernel, but haven't enabled"
241 eerror "enabled any option that will ensure that zlib is linked into your" 709 eerror "enabled any option that will ensure that zlib is linked into your"
242 eerror "kernel." 710 eerror "kernel."
252 eerror "Please remember to recompile and install your kernel, and reboot" 720 eerror "Please remember to recompile and install your kernel, and reboot"
253 eerror "into your new kernel before attempting to load this kernel module." 721 eerror "into your new kernel before attempting to load this kernel module."
254 722
255 die "Kernel doesn't include zlib support" 723 die "Kernel doesn't include zlib support"
256} 724}
725
726################################
727# Default pkg_setup
728# Also used when inheriting linux-mod to force a get_version call
729# @FUNCTION: linux-info_pkg_setup
730# @DESCRIPTION:
731# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
732# to support the options specified in CONFIG_CHECK (if not null)
733linux-info_pkg_setup() {
734 get_version || die "Unable to calculate Linux Kernel version"
735
736 if kernel_is 2 4; then
737 if [ "$( 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
752 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
753}

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