/[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 1.5 Revision 1.62
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 1.5 2004/12/01 18:08:57 johnm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.62 2009/09/06 22:54:58 robbat2 Exp $
4# 4#
5# 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="kernel_linux? ( virtual/linux-sources )"
114RDEPEND=""
11 115
12# Overwritable environment Var's 116# Overwritable environment Var's
13# --------------------------------------- 117# ---------------------------------------
14KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" 118KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
119
120
121# Bug fixes
122# fix to bug #75034
123case ${ARCH} in
124 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
125 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
126esac
127
128# @FUNCTION: set_arch_to_kernel
129# @DESCRIPTION:
130# Set the env ARCH to match what the kernel expects.
131set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
132# @FUNCTION: set_arch_to_portage
133# @DESCRIPTION:
134# Set the env ARCH to match what portage expects.
135set_arch_to_portage() { export ARCH=$(tc-arch); }
136
137# qeinfo "Message"
138# -------------------
139# qeinfo is a quiet einfo call when EBUILD_PHASE
140# should not have visible output.
141qout() {
142 local outputmsg type
143 type=${1}
144 shift
145 outputmsg="${@}"
146 case "${EBUILD_PHASE}" in
147 depend) unset outputmsg;;
148 clean) unset outputmsg;;
149 preinst) unset outputmsg;;
150 esac
151 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
152}
153
154qeinfo() { qout einfo "${@}" ; }
155qeerror() { qout eerror "${@}" ; }
15 156
16# File Functions 157# File Functions
17# --------------------------------------- 158# ---------------------------------------
18 159
19# getfilevar accepts 2 vars as follows: 160# @FUNCTION: getfilevar
20# getfilevar <VARIABLE> <CONFIGFILE> 161# @USAGE: variable configfile
21 162# @RETURN: the value of the variable
163# @DESCRIPTION:
164# It detects the value of the variable defined in the file configfile. This is
165# done by including the configfile, and printing the variable with Make.
166# It WILL break if your makefile has missing dependencies!
22getfilevar() { 167getfilevar() {
23local ERROR curpwd 168local ERROR basefname basedname myARCH="${ARCH}"
24 ERROR=0 169 ERROR=0
25 170
26 [ -z "${1}" ] && ERROR=1 171 [ -z "${1}" ] && ERROR=1
27 [ ! -f "${2}" ] && ERROR=1 172 [ ! -f "${2}" ] && ERROR=1
28 173
29 if [ "${ERROR}" = 1 ] 174 if [ "${ERROR}" = 1 ]
30 then 175 then
176 echo -e "\n"
31 eerror "getfilevar requires 2 variables, with the second a valid file." 177 eerror "getfilevar requires 2 variables, with the second a valid file."
32 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 178 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
33 else 179 else
34 curpwd="${PWD}" 180 basefname="$(basename ${2})"
35 cd $(dirname ${2}) 181 basedname="$(dirname ${2})"
36 echo $(echo -e "include $(basename ${2})\ne:\n\t@echo \$(${1})" | make -f - e) 182 unset ARCH
37 cd ${curpwd}
38 # grep -e "^$1[= ]" $2 | sed 's: = :=:' | cut -d= -f2-
39 fi
40}
41 183
184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
186
187 ARCH=${myARCH}
188 fi
189}
190
191# @FUNCTION: getfilevar_noexec
192# @USAGE: variable configfile
193# @RETURN: the value of the variable
194# @DESCRIPTION:
195# It detects the value of the variable defined in the file configfile.
196# This is done with sed matching an expression only. If the variable is defined,
197# you will run into problems. See getfilevar for those cases.
42getfilevar_isset() { 198getfilevar_noexec() {
199 local ERROR basefname basedname mycat myARCH="${ARCH}"
200 ERROR=0
201 mycat='cat'
202
203 [ -z "${1}" ] && ERROR=1
204 [ ! -f "${2}" ] && ERROR=1
205 [ "${2#.gz}" != "${2}" ] && mycat='zcat'
206
207 if [ "${ERROR}" = 1 ]
208 then
209 echo -e "\n"
210 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
211 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
212 else
213 ${mycat} "${2}" | \
214 sed -n \
215 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
216 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
217 s,[[:space:]]*\$,,g ;
218 p
219 }"
220 fi
221}
222
223
224# @FUNCTION: linux_config_src_exists
225# @RETURN: true or false
226# @DESCRIPTION:
227# It returns true if .config exists in a build directory otherwise false
228linux_config_src_exists() {
229 [ -s "${KV_OUT_DIR}/.config" ]
230}
231
232# @FUNCTION: linux_config_bin_exists
233# @RETURN: true or false
234# @DESCRIPTION:
235# It returns true if .config exists in /proc, otherwise false
236linux_config_bin_exists() {
237 [ -s "/proc/config.gz" ]
238}
239
240# @FUNCTION: linux_config_exists
241# @RETURN: true or false
242# @DESCRIPTION:
243# It returns true if .config exists otherwise false
244#
245# This function MUST be checked before using any of the linux_chkconfig_*
246# functions.
247linux_config_exists() {
248 linux_config_src_exists || linux_config_bin_exists
249}
250
251# @FUNCTION: require_configured_kernel
252# @DESCRIPTION:
253# This function verifies that the current kernel is configured (it checks against the existence of .config)
254# otherwise it dies.
255require_configured_kernel() {
256 if ! linux_config_src_exists; then
257 qeerror "Could not find a usable .config in the kernel source directory."
258 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
259 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
260 qeerror "it points to the necessary object directory so that it might find .config."
261 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
262 fi
263}
264
265# @FUNCTION: linux_chkconfig_present
266# @USAGE: option
267# @RETURN: true or false
268# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first.
272linux_chkconfig_present() {
43local RESULT 273local RESULT
44 RESULT="$(getfilevar ${1} ${2})" 274 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
275 local config
276 config="${KV_OUT_DIR}/.config"
277 [ ! -f "${config}" ] && config="/proc/config.gz"
278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
45 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
46} 280}
47 281
48getfilevar_ismodule() { 282# @FUNCTION: linux_chkconfig_module
283# @USAGE: option
284# @RETURN: true or false
285# @DESCRIPTION:
286# It checks that CONFIG_<option>=m is present in the current kernel .config
287# If linux_config_exists returns false, the results of this are UNDEFINED. You
288# MUST call linux_config_exists first.
289linux_chkconfig_module() {
49local RESULT 290local RESULT
50 RESULT="$(getfilevar ${1} ${2})" 291 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
292 local config
293 config="${KV_OUT_DIR}/.config"
294 [ ! -f "${config}" ] && config="/proc/config.gz"
295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
51 [ "${RESULT}" = "m" ] && return 0 || return 1 296 [ "${RESULT}" = "m" ] && return 0 || return 1
52} 297}
53 298
54getfilevar_isbuiltin() { 299# @FUNCTION: linux_chkconfig_builtin
300# @USAGE: option
301# @RETURN: true or false
302# @DESCRIPTION:
303# It checks that CONFIG_<option>=y is present in the current kernel .config
304# If linux_config_exists returns false, the results of this are UNDEFINED. You
305# MUST call linux_config_exists first.
306linux_chkconfig_builtin() {
55local RESULT 307local RESULT
56 RESULT="$(getfilevar ${1} ${2})" 308 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
309 local config
310 config="${KV_OUT_DIR}/.config"
311 [ ! -f "${config}" ] && config="/proc/config.gz"
312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
57 [ "${RESULT}" = "y" ] && return 0 || return 1 313 [ "${RESULT}" = "y" ] && return 0 || return 1
314}
315
316# @FUNCTION: linux_chkconfig_string
317# @USAGE: option
318# @RETURN: CONFIG_<option>
319# @DESCRIPTION:
320# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
321# If linux_config_exists returns false, the results of this are UNDEFINED. You
322# MUST call linux_config_exists first.
323linux_chkconfig_string() {
324 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
325 local config
326 config="${KV_OUT_DIR}/.config"
327 [ ! -f "${config}" ] && config="/proc/config.gz"
328 getfilevar_noexec "CONFIG_${1}" "${config}"
58} 329}
59 330
60# Versioning Functions 331# Versioning Functions
61# --------------------------------------- 332# ---------------------------------------
62 333
63# kernel_is returns true when the version is the same as the passed version 334# @FUNCTION: kernel_is
335# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
336# @RETURN: true or false
337# @DESCRIPTION:
338# It returns true when the current kernel version satisfies the comparison against the passed version.
339# -eq is the default comparison.
64# 340#
341# @CODE
65# For Example where KV = 2.6.9 342# For Example where KV = 2.6.9
66# kernel_is 2 4 returns false 343# kernel_is 2 4 returns false
67# kernel_is 2 returns true 344# kernel_is 2 returns true
68# kernel_is 2 6 returns true 345# kernel_is 2 6 returns true
69# kernel_is 2 6 8 returns false 346# kernel_is 2 6 8 returns false
70# kernel_is 2 6 9 returns true 347# kernel_is 2 6 9 returns true
71# 348# @CODE
349
72# got the jist yet? 350# got the jist yet?
73 351
74kernel_is() { 352kernel_is() {
75 # if we haven't determined the version yet, we need too. 353 # if we haven't determined the version yet, we need to.
76 get_version; 354 get_version
355 local operator test value x=0 y=0 z=0
356
357 case ${1} in
358 lt) operator="-lt"; shift;;
359 gt) operator="-gt"; shift;;
360 le) operator="-le"; shift;;
361 ge) operator="-ge"; shift;;
362 eq) operator="-eq"; shift;;
363 *) operator="-eq";;
364 esac
365
366 for x in ${@}; do
367 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
368 value="${value}${x}"
369 z=$((${z} + 1))
370
371 case ${z} in
372 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
373 test="${test}${KV_MAJOR}";;
374 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
375 test="${test}${KV_MINOR}";;
376 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
377 test="${test}${KV_PATCH}";;
378 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
379 esac
380 done
77 381
78 local RESULT 382 [ ${test} ${operator} ${value} ] && return 0 || return 1
79 RESULT=1
80
81 if [ -n "${1}" ]
82 then
83 [ "${1}" = "${KV_MAJOR}" ] && RESULT=0
84 fi
85
86 if [ -n "${2}" ]
87 then
88 RESULT=1
89 [ "${2}" = "${KV_MINOR}" ] && RESULT=0
90 fi
91
92 if [ -n "${3}" ]
93 then
94 RESULT=1
95 [ "${3}" = "${KV_PATCH}" ] && RESULT=0
96 fi
97 return ${RESULT}
98} 383}
99 384
385get_localversion() {
386 local lv_list i x
387
388 # ignore files with ~ in it.
389 for i in $(ls ${1}/localversion* 2>/dev/null); do
390 [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
391 done
392
393 for i in ${lv_list}; do
394 x="${x}$(<${i})"
395 done
396 x=${x/ /}
397 echo ${x}
398}
399
400# @FUNCTION: get_version
401# @DESCRIPTION:
402# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
403# (if KV_FULL is already set it does nothing).
404#
405# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
406#
407# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
408# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
409# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
100get_version() { 410get_version() {
101 local kbuild_output 411 local kbuild_output
102 412
103 # no need to execute this twice assuming KV_FULL is populated. 413 # no need to execute this twice assuming KV_FULL is populated.
104 # we can force by unsetting KV_FULL 414 # we can force by unsetting KV_FULL
105 [ -n "${KV_FULL}" ] && return 415 [ -n "${KV_FULL}" ] && return 0
106 416
107 # if we dont know KV_FULL, then we need too. 417 # if we dont know KV_FULL, then we need too.
108 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 418 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
109 unset KV_DIR 419 unset KV_DIR
110 420
111 # KV_DIR will contain the full path to the sources directory we should use 421 # KV_DIR will contain the full path to the sources directory we should use
112 einfo "Determining the location of the kernel source code" 422 qeinfo "Determining the location of the kernel source code"
113 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 423 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
114 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 424 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
115 425
116 if [ -z "${KV_DIR}" ] 426 if [ -z "${KV_DIR}" ]
117 then 427 then
118 eerror "Unable to find kernel sources at ${KERNEL_DIR}" 428 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
119 die 429 qeinfo "This package requires Linux sources."
430 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
431 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
432 qeinfo "(or the kernel you wish to build against)."
433 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
434 else
435 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
120 fi 436 fi
121 437 return 1
438 fi
439
440 qeinfo "Found kernel source directory:"
441 qeinfo " ${KV_DIR}"
442
443 if [ ! -s "${KV_DIR}/Makefile" ]
444 then
445 qeerror "Could not find a Makefile in the kernel source directory."
446 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
447 return 1
448 fi
449
122 # OK so now we know our sources directory, but they might be using 450 # OK so now we know our sources directory, but they might be using
123 # KBUILD_OUTPUT, and we need this for .config and localversions-* 451 # KBUILD_OUTPUT, and we need this for .config and localversions-*
124 # so we better find it eh? 452 # so we better find it eh?
125 # do we pass KBUILD_OUTPUT on the CLI? 453 # do we pass KBUILD_OUTPUT on the CLI?
126 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 454 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
127 455
128 # Or maybe KBUILD_OUTPUT is set in Makefile? 456 # And if we didn't pass it, we can take a nosey in the Makefile
129 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 457 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
130 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 458 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
131 459
132 # And contrary to existing functions I feel we shouldn't trust the 460 # And contrary to existing functions I feel we shouldn't trust the
133 # directory name to find version information as this seems insane. 461 # directory name to find version information as this seems insane.
134 # so we parse ${KV_DIR}/Makefile 462 # so we parse ${KV_DIR}/Makefile
135 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 463 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
136 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 464 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
137 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 465 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
138 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 466 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
139 467
468 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
469 then
470 qeerror "Could not detect kernel version."
471 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
472 return 1
473 fi
474
140 # and in newer versions we can also pull LOCALVERSION if it is set. 475 # and in newer versions we can also pull LOCALVERSION if it is set.
141 # but before we do this, we need to find if we use a different object directory. 476 # but before we do this, we need to find if we use a different object directory.
142 # This *WILL* break if the user is using localversions, but we assume it was 477 # This *WILL* break if the user is using localversions, but we assume it was
143 # caught before this if they are. 478 # caught before this if they are.
144 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 479 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
145 OUTPUT_DIR="/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build" 480 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
146 481
147 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 482 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
148 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 483 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
149 if [ -n "${KV_OUT_DIR}" ]; 484 if [ -n "${KV_OUT_DIR}" ];
150 then 485 then
151 einfo "Found kernel object directory:" 486 qeinfo "Found kernel object directory:"
152 einfo " ${KV_OUT_DIR}" 487 qeinfo " ${KV_OUT_DIR}"
153 488
154 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)" 489 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
155 fi 490 fi
156 # and if we STILL haven't got it, then we better just set it to KV_DIR 491 # and if we STILL have not got it, then we better just set it to KV_DIR
157 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 492 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
158 493
159 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)" 494 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
160 KV_LOCAL="${KV_LOCAL}$(getfilevar CONFIG_LOCALVERSION ${KV_OUT_DIR}/.config | sed 's:"::g')" 495 if linux_config_exists; then
161 496 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
497 KV_LOCAL="${KV_LOCAL//\"/}"
498
499 # For things like git that can append extra stuff:
500 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
501 linux_chkconfig_builtin LOCALVERSION_AUTO &&
502 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
503 fi
504
162 # And we should set KV_FULL to the full expanded version 505 # And we should set KV_FULL to the full expanded version
163 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 506 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
164 507
165 if [ -z "${KV_FULL}" ] 508 qeinfo "Found sources for kernel version:"
166 then 509 qeinfo " ${KV_FULL}"
167 eerror "We are unable to find a usable kernel source tree in ${KV_DIR}" 510
168 eerror "Please check a kernel source exists in this directory." 511 return 0
169 die 512}
513
514# @FUNCTION: get_running_version
515# @DESCRIPTION:
516# It gets the version of the current running kernel and the result is the same as get_version() if the
517# function can find the sources.
518get_running_version() {
519 KV_FULL=$(uname -r)
520
521 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
522 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
523 unset KV_FULL
524 get_version
525 return $?
526 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
527 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
528 unset KV_FULL
529 get_version
530 return $?
170 else 531 else
171 einfo "Found kernel source directory:" 532 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
172 einfo " ${KV_DIR}" 533 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
173 einfo "with sources for kernel version:" 534 KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
174 einfo " ${KV_FULL}" 535 KV_PATCH=${KV_PATCH//-*}
536 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
537 && KV_EXTRA="-${KV_FULL#*-}"
175 fi 538 fi
539 return 0
176} 540}
177
178
179 541
180 542
181# ebuild check functions 543# ebuild check functions
182# --------------------------------------- 544# ---------------------------------------
183 545
546# @FUNCTION: check_kernel_built
547# @DESCRIPTION:
548# This function verifies that the current kernel sources have been already prepared otherwise it dies.
184check_kernel_built() { 549check_kernel_built() {
185 # if we haven't determined the version yet, we need too. 550 # if we haven't determined the version yet, we need to
551 require_configured_kernel
186 get_version; 552 get_version
187 553
188 if [ ! -f "${KV_OUT_DIR}/System.map" ] 554 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
189 then 555 then
190 eerror "These sources have not yet been compiled." 556 eerror "These sources have not yet been prepared."
191 eerror "We cannot build against an uncompiled tree." 557 eerror "We cannot build against an unprepared tree."
192 eerror "To resolve this, please type the following:" 558 eerror "To resolve this, please type the following:"
193 eerror 559 eerror
194 eerror "# cd ${KV_DIR}" 560 eerror "# cd ${KV_DIR}"
195 eerror "# make oldconfig" 561 eerror "# make oldconfig"
196 eerror "# make bzImage modules modules_install" 562 eerror "# make modules_prepare"
197 eerror 563 eerror
198 eerror "Then please try merging this module again." 564 eerror "Then please try merging this module again."
199 die "Kernel sources need compiling first" 565 die "Kernel sources need compiling first"
200 fi 566 fi
201} 567}
202 568
569# @FUNCTION: check_modules_supported
570# @DESCRIPTION:
571# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
203check_modules_supported() { 572check_modules_supported() {
204 # if we haven't determined the version yet, we need too. 573 # if we haven't determined the version yet, we need too.
574 require_configured_kernel
205 get_version; 575 get_version
206 576
207 getfilevar_isset CONFIG_MODULES ${KV_OUT_DIR}/.config 577 if ! linux_chkconfig_builtin "MODULES"
208 if [ "$?" != 0 ]
209 then 578 then
210 eerror "These sources do not support loading external modules." 579 eerror "These sources do not support loading external modules."
211 eerror "to be able to use this module please enable \"Loadable modules support\"" 580 eerror "to be able to use this module please enable \"Loadable modules support\""
212 eerror "in your kernel, recompile and then try merging this module again." 581 eerror "in your kernel, recompile and then try merging this module again."
213 die No support for external modules in ${KV_FULL} config 582 die "No support for external modules in ${KV_FULL} config"
214 fi 583 fi
215} 584}
216 585
586# @FUNCTION: check_extra_config
587# @DESCRIPTION:
588# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
589# the prefix ~ is not used) doesn't satisfy the directive.
217check_extra_config() { 590check_extra_config() {
218local config negate error 591 local config negate die error reworkmodulenames
592 local soft_errors_count=0 hard_errors_count=0 config_required=0
219 593
220 # if we haven't determined the version yet, we need too. 594 # if we haven't determined the version yet, we need to
221 get_version; 595 get_version
222 596
223 einfo "Checking for suitable kernel configuration options" 597 # Determine if we really need a .config. The only time when we don't need
598 # one is when all of the CONFIG_CHECK options are prefixed with "~".
224 for config in ${CONFIG_CHECK} 599 for config in ${CONFIG_CHECK}
225 do 600 do
226 negate="${config:0:1}" 601 if [[ "${config:0:1}" != "~" ]]; then
227 if [ "${negate}" == "!" ]; 602 config_required=1
228 then 603 break
604 fi
605 done
606
607 if [[ ${config_required} == 0 ]]; then
608 # In the case where we don't require a .config, we can now bail out
609 # if the user has no .config as there is nothing to do. Otherwise
610 # code later will cause a failure due to missing .config.
611 if ! linux_config_exists; then
612 ewarn "Unable to check for the following kernel config options due"
613 ewarn "to absence of any configured kernel sources:"
614 for config in ${CONFIG_CHECK}; do
615 ewarn " - ${config#\~}"
616 done
617 ewarn "You're on your own to make sure they are set if needed."
618 return 0
619 fi
620 else
621 require_configured_kernel
622 fi
623
624 einfo "Checking for suitable kernel configuration options..."
625
626 for config in ${CONFIG_CHECK}
627 do
628 # if we specify any fatal, ensure we honor them
629 die=1
630 error=0
631 negate=0
632 reworkmodulenames=0
633
634 if [[ ${config:0:1} == "~" ]]; then
635 die=0
229 config="${config:1}" 636 config=${config:1}
230 if getfilevar_isset ${config} ${KV_OUT_DIR}/.config ; 637 elif [[ ${config:0:1} == "@" ]]; then
231 then 638 die=0
232 eerror " ${config}:\tshould not be set in the kernel configuration, but it is." 639 reworkmodulenames=1
640 config=${config:1}
641 fi
642 if [[ ${config:0:1} == "!" ]]; then
643 negate=1
644 config=${config:1}
645 fi
646
647 if [[ ${negate} == 1 ]]; then
648 linux_chkconfig_present ${config} && error=2
649 elif [[ ${reworkmodulenames} == 1 ]]; then
650 local temp_config="${config//*:}" i n
651 config="${config//:*}"
652 if linux_chkconfig_present ${config}; then
653 for i in ${MODULE_NAMES}; do
654 n="${i//${temp_config}}"
655 [[ -z ${n//\(*} ]] && \
656 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
657 done
233 error=1 658 error=2
234 fi 659 fi
235 else 660 else
236 if ! getfilevar_isset ${config} ${KV_OUT_DIR}/.config ; 661 linux_chkconfig_present ${config} || error=1
237 then 662 fi
238 eerror " ${config}:\tshould be set in the kernel configuration, but isn't" 663
239 error=1 664 if [[ ${error} > 0 ]]; then
665 local report_func="eerror" local_error
666 local_error="ERROR_${config}"
667 local_error="${!local_error}"
668
669 if [[ -z "${local_error}" ]]; then
670 # using old, deprecated format.
671 local_error="${config}_ERROR"
672 local_error="${!local_error}"
673 fi
674 if [[ ${die} == 0 && -z "${local_error}" ]]; then
675 #soft errors can be warnings
676 local_error="WARNING_${config}"
677 local_error="${!local_error}"
678 if [[ -n "${local_error}" ]] ; then
679 report_func="ewarn"
680 fi
681 fi
682
683 if [[ -z "${local_error}" ]]; then
684 [[ ${error} == 1 ]] \
685 && local_error="is not set when it should be." \
686 || local_error="should not be set. But it is."
687 local_error="CONFIG_${config}:\t ${local_error}"
688 fi
689 if [[ ${die} == 0 ]]; then
690 ${report_func} " ${local_error}"
691 soft_errors_count=$[soft_errors_count + 1]
692 else
693 ${report_func} " ${local_error}"
694 hard_errors_count=$[hard_errors_count + 1]
240 fi 695 fi
241 fi 696 fi
242 done 697 done
243 698
244 if [ -n "${error}" ] ; 699 if [[ ${hard_errors_count} > 0 ]]; then
245 then
246 eerror "Please check to make sure these options are set correctly." 700 eerror "Please check to make sure these options are set correctly."
701 eerror "Failure to do so may cause unexpected problems."
247 eerror "Once you have satisfied these options, please try merging" 702 eerror "Once you have satisfied these options, please try merging"
248 eerror "this package again." 703 eerror "this package again."
249 die Incorrect kernel configuration options 704 die "Incorrect kernel configuration options"
705 elif [[ ${soft_errors_count} > 0 ]]; then
706 ewarn "Please check to make sure these options are set correctly."
707 ewarn "Failure to do so may cause unexpected problems."
708 else
709 eend 0
250 fi 710 fi
251} 711}
252 712
253check_zlibinflate() { 713check_zlibinflate() {
254 # if we haven't determined the version yet, we need too. 714 # if we haven't determined the version yet, we need to
715 require_configured_kernel
255 get_version; 716 get_version
256 717
257 # although I restructured this code - I really really really dont support it! 718 # although I restructured this code - I really really really dont support it!
258 719
259 # bug #27882 - zlib routines are only linked into the kernel 720 # bug #27882 - zlib routines are only linked into the kernel
260 # if something compiled into the kernel calls them 721 # if something compiled into the kernel calls them
261 # 722 #
262 # plus, for the cloop module, it appears that there's no way 723 # plus, for the cloop module, it appears that there's no way
263 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS 724 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
264 # is on 725 # is on
265 726
266local INFLATE 727 local INFLATE
267local DEFLATE 728 local DEFLATE
268 729
269 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 730 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
270 731
271 ebegin "checking ZLIB_INFLATE" 732 ebegin "checking ZLIB_INFLATE"
272 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 733 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
273 eend $? 734 eend $?
274 [ "$?" != 0 ] && die 735 [ "$?" != 0 ] && die
275 736
276 ebegin "checking ZLIB_DEFLATE" 737 ebegin "checking ZLIB_DEFLATE"
277 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 738 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
278 eend $? 739 eend $?
279 [ "$?" != 0 ] && die 740 [ "$?" != 0 ] && die
280 741
281
282 local LINENO_START 742 local LINENO_START
283 local LINENO_END 743 local LINENO_END
284 local SYMBOLS 744 local SYMBOLS
285 local x 745 local x
286 746
287 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 747 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
288 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" 748 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
289 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 749 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
290 (( LINENO_END = $LINENO_END - 1 )) 750 (( LINENO_END = $LINENO_END - 1 ))
291 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" 751 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
297 # we have a winner! 757 # we have a winner!
298 einfo "${x} ensures zlib is linked into your kernel - excellent" 758 einfo "${x} ensures zlib is linked into your kernel - excellent"
299 return 0 759 return 0
300 fi 760 fi
301 done 761 done
302 762
303 eerror 763 eerror
304 eerror "This kernel module requires ZLIB library support." 764 eerror "This kernel module requires ZLIB library support."
305 eerror "You have enabled zlib support in your kernel, but haven't enabled" 765 eerror "You have enabled zlib support in your kernel, but haven't enabled"
306 eerror "enabled any option that will ensure that zlib is linked into your" 766 eerror "enabled any option that will ensure that zlib is linked into your"
307 eerror "kernel." 767 eerror "kernel."
317 eerror "Please remember to recompile and install your kernel, and reboot" 777 eerror "Please remember to recompile and install your kernel, and reboot"
318 eerror "into your new kernel before attempting to load this kernel module." 778 eerror "into your new kernel before attempting to load this kernel module."
319 779
320 die "Kernel doesn't include zlib support" 780 die "Kernel doesn't include zlib support"
321} 781}
782
783################################
784# Default pkg_setup
785# Also used when inheriting linux-mod to force a get_version call
786# @FUNCTION: linux-info_pkg_setup
787# @DESCRIPTION:
788# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
789# to support the options specified in CONFIG_CHECK (if not null)
790linux-info_pkg_setup() {
791 get_version
792 if [[ $rc -ne 0 ]]; then
793 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
794 get_running_version
795 fi
796
797 if kernel_is 2 4; then
798 if [ "$( gcc-major-version )" -eq "4" ] ; then
799 echo
800 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
801 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
802 echo
803 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
804 ewarn "newer kernel that supports gcc-4."
805 echo
806 ewarn "Also be aware that bugreports about gcc-4 not working"
807 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
808 echo
809 epause 10
810 fi
811 fi
812
813 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
814}

Legend:
Removed from v.1.5  
changed lines
  Added in v.1.62

  ViewVC Help
Powered by ViewVC 1.1.20