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Revision 1.6 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 1.6 2004/12/01 23:26:43 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 workingdir basefname basedname arch 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 [ "${ERROR}" = 1 ]
30 then 175 then
31 ebeep
32 echo -e "\n" 176 echo -e "\n"
33 eerror "getfilevar requires 2 variables, with the second a valid file." 177 eerror "getfilevar requires 2 variables, with the second a valid file."
34 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 178 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
35 else 179 else
36 workingdir=${PWD}
37 basefname=$(basename ${2}) 180 basefname="$(basename ${2})"
38 basedname=$(dirname ${2}) 181 basedname="$(dirname ${2})"
39 arch=${ARCH}
40 unset ARCH 182 unset ARCH
41
42 cd ${basedname}
43 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | make -f - e
44 cd ${workingdir}
45
46 ARCH=${arch}
47 fi
48}
49 183
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.
50getfilevar_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 ${KV_OUT_DIR}"
262 fi
263}
264
265# @FUNCTION: linux_chkconfig_present
266# @USAGE: option
267# @RETURN: true or false
268# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first.
272linux_chkconfig_present() {
51local RESULT 273local RESULT
52 RESULT="$(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} "${config}")"
53 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
54} 280}
55 281
56getfilevar_ismodule() { 282# @FUNCTION: linux_chkconfig_module
283# @USAGE: option
284# @RETURN: true or false
285# @DESCRIPTION:
286# It checks that CONFIG_<option>=m is present in the current kernel .config
287# If linux_config_exists returns false, the results of this are UNDEFINED. You
288# MUST call linux_config_exists first.
289linux_chkconfig_module() {
57local RESULT 290local RESULT
58 RESULT="$(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} "${config}")"
59 [ "${RESULT}" = "m" ] && return 0 || return 1 296 [ "${RESULT}" = "m" ] && return 0 || return 1
60} 297}
61 298
62getfilevar_isbuiltin() { 299# @FUNCTION: linux_chkconfig_builtin
300# @USAGE: option
301# @RETURN: true or false
302# @DESCRIPTION:
303# It checks that CONFIG_<option>=y is present in the current kernel .config
304# If linux_config_exists returns false, the results of this are UNDEFINED. You
305# MUST call linux_config_exists first.
306linux_chkconfig_builtin() {
63local RESULT 307local RESULT
64 RESULT="$(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} "${config}")"
65 [ "${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}"
66} 329}
67 330
68# Versioning Functions 331# Versioning Functions
69# --------------------------------------- 332# ---------------------------------------
70 333
71# 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.
72# 340#
341# @CODE
73# For Example where KV = 2.6.9 342# For Example where KV = 2.6.9
74# kernel_is 2 4 returns false 343# kernel_is 2 4 returns false
75# kernel_is 2 returns true 344# kernel_is 2 returns true
76# kernel_is 2 6 returns true 345# kernel_is 2 6 returns true
77# kernel_is 2 6 8 returns false 346# kernel_is 2 6 8 returns false
78# kernel_is 2 6 9 returns true 347# kernel_is 2 6 9 returns true
79# 348# @CODE
349
80# got the jist yet? 350# got the jist yet?
81 351
82kernel_is() { 352kernel_is() {
83 # if we haven't determined the version yet, we need too. 353 # if we haven't determined the version yet, we need to.
84 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
85 381
86 local RESULT 382 [ ${test} ${operator} ${value} ] && return 0 || return 1
87 RESULT=1
88
89 if [ -n "${1}" ]
90 then
91 [ "${1}" = "${KV_MAJOR}" ] && RESULT=0
92 fi
93
94 if [ -n "${2}" ]
95 then
96 RESULT=1
97 [ "${2}" = "${KV_MINOR}" ] && RESULT=0
98 fi
99
100 if [ -n "${3}" ]
101 then
102 RESULT=1
103 [ "${3}" = "${KV_PATCH}" ] && RESULT=0
104 fi
105 return ${RESULT}
106} 383}
107 384
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}${KV_EXTRA}/build).
108get_version() { 410get_version() {
109 local kbuild_output 411 local kbuild_output
110 412
111 # no need to execute this twice assuming KV_FULL is populated. 413 # no need to execute this twice assuming KV_FULL is populated.
112 # we can force by unsetting KV_FULL 414 # we can force by unsetting KV_FULL
113 [ -n "${KV_FULL}" ] && return 415 [ -n "${KV_FULL}" ] && return 0
114 416
115 # if we dont know KV_FULL, then we need too. 417 # if we dont know KV_FULL, then we need too.
116 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 418 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
117 unset KV_DIR 419 unset KV_DIR
118 420
119 # KV_DIR will contain the full path to the sources directory we should use 421 # KV_DIR will contain the full path to the sources directory we should use
120 einfo "Determining the location of the kernel source code" 422 qeinfo "Determining the location of the kernel source code"
121 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 423 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
122 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 424 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
123 425
124 if [ -z "${KV_DIR}" ] 426 if [ -z "${KV_DIR}" ]
125 then 427 then
126 eerror "Unable to find kernel sources at ${KERNEL_DIR}" 428 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
127 die 429 qeinfo "This package requires Linux sources."
430 if [ "${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."
128 fi 436 fi
129 437 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 ${KERNEL_DIR} points to a complete set of Linux sources"
447 return 1
448 fi
449
130 # OK so now we know our sources directory, but they might be using 450 # OK so now we know our sources directory, but they might be using
131 # KBUILD_OUTPUT, and we need this for .config and localversions-* 451 # KBUILD_OUTPUT, and we need this for .config and localversions-*
132 # so we better find it eh? 452 # so we better find it eh?
133 # do we pass KBUILD_OUTPUT on the CLI? 453 # do we pass KBUILD_OUTPUT on the CLI?
134 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 454 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
135 455
136 # And if we didn't pass it, we can take a nosey in the Makefile 456 # And if we didn't pass it, we can take a nosey in the Makefile
137 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 457 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
138 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 458 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
139 459
140 # 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
141 # directory name to find version information as this seems insane. 461 # directory name to find version information as this seems insane.
142 # so we parse ${KV_DIR}/Makefile 462 # so we parse ${KV_DIR}/Makefile
143 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 463 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
144 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 464 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
145 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 465 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
146 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 466 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
147 467
468 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
469 then
470 qeerror "Could not detect kernel version."
471 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
472 return 1
473 fi
474
148 # and in newer versions we can also pull LOCALVERSION if it is set. 475 # and in newer versions we can also pull LOCALVERSION if it is set.
149 # but before we do this, we need to find if we use a different object directory. 476 # but before we do this, we need to find if we use a different object directory.
150 # This *WILL* break if the user is using localversions, but we assume it was 477 # This *WILL* break if the user is using localversions, but we assume it was
151 # caught before this if they are. 478 # caught before this if they are.
152 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 479 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
153 OUTPUT_DIR="/lib/modules/${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}"
154 481
155 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 482 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
156 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 483 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
157 if [ -n "${KV_OUT_DIR}" ]; 484 if [ -n "${KV_OUT_DIR}" ];
158 then 485 then
159 einfo "Found kernel object directory:" 486 qeinfo "Found kernel object directory:"
160 einfo " ${KV_OUT_DIR}" 487 qeinfo " ${KV_OUT_DIR}"
161 488
162 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)" 489 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
163 fi 490 fi
164 # and if we STILL haven't got it, then we better just set it to KV_DIR 491 # and if we STILL have not got it, then we better just set it to KV_DIR
165 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 492 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
166 493
167 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)" 494 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
168 KV_LOCAL="${KV_LOCAL}$(getfilevar CONFIG_LOCALVERSION ${KV_OUT_DIR}/.config | sed 's:"::g')" 495 if linux_config_exists; then
169 496 KV_LOCAL="${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 ${KV_DIR})"
503 fi
504
170 # And we should set KV_FULL to the full expanded version 505 # And we should set KV_FULL to the full expanded version
171 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 506 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
172 507
173 if [ -z "${KV_FULL}" ] 508 qeinfo "Found sources for kernel version:"
174 then 509 qeinfo " ${KV_FULL}"
175 eerror "We are unable to find a usable kernel source tree in ${KV_DIR}" 510
176 eerror "Please check a kernel source exists in this directory." 511 return 0
177 die 512}
513
514# @FUNCTION: get_running_version
515# @DESCRIPTION:
516# It gets the version of the current running kernel and the result is the same as get_version() if the
517# function can find the sources.
518get_running_version() {
519 KV_FULL=$(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 $?
178 else 531 else
179 einfo "Found kernel source directory:" 532 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
180 einfo " ${KV_DIR}" 533 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
181 einfo "with sources for kernel version:" 534 KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
182 einfo " ${KV_FULL}" 535 KV_PATCH=${KV_PATCH//-*}
536 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
537 && KV_EXTRA="-${KV_FULL#*-}"
183 fi 538 fi
539 return 0
184} 540}
185
186
187 541
188 542
189# ebuild check functions 543# ebuild check functions
190# --------------------------------------- 544# ---------------------------------------
191 545
546# @FUNCTION: check_kernel_built
547# @DESCRIPTION:
548# This function verifies that the current kernel sources have been already prepared otherwise it dies.
192check_kernel_built() { 549check_kernel_built() {
193 # if we haven't determined the version yet, we need too. 550 # if we haven't determined the version yet, we need to
551 require_configured_kernel
194 get_version; 552 get_version
195 553
196 if [ ! -f "${KV_OUT_DIR}/System.map" ] 554 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
197 then 555 then
198 eerror "These sources have not yet been compiled." 556 eerror "These sources have not yet been prepared."
199 eerror "We cannot build against an uncompiled tree." 557 eerror "We cannot build against an unprepared tree."
200 eerror "To resolve this, please type the following:" 558 eerror "To resolve this, please type the following:"
201 eerror 559 eerror
202 eerror "# cd ${KV_DIR}" 560 eerror "# cd ${KV_DIR}"
203 eerror "# make oldconfig" 561 eerror "# make oldconfig"
204 eerror "# make bzImage modules modules_install" 562 eerror "# make modules_prepare"
205 eerror 563 eerror
206 eerror "Then please try merging this module again." 564 eerror "Then please try merging this module again."
207 die "Kernel sources need compiling first" 565 die "Kernel sources need compiling first"
208 fi 566 fi
209} 567}
210 568
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.
211check_modules_supported() { 572check_modules_supported() {
212 # 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
213 get_version; 575 get_version
214 576
215 getfilevar_isset CONFIG_MODULES ${KV_OUT_DIR}/.config 577 if ! linux_chkconfig_builtin "MODULES"
216 if [ "$?" != 0 ]
217 then 578 then
218 eerror "These sources do not support loading external modules." 579 eerror "These sources do not support loading external modules."
219 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\""
220 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."
221 die No support for external modules in ${KV_FULL} config 582 die "No support for external modules in ${KV_FULL} config"
222 fi 583 fi
223} 584}
224 585
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.
225check_extra_config() { 590check_extra_config() {
226local config negate error 591 local config negate die error reworkmodulenames
592 local soft_errors_count=0 hard_errors_count=0 config_required=0
227 593
228 # if we haven't determined the version yet, we need too. 594 # if we haven't determined the version yet, we need to
229 get_version; 595 get_version
230 596
231 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 "~".
232 for config in ${CONFIG_CHECK} 599 for config in ${CONFIG_CHECK}
233 do 600 do
234 negate="${config:0:1}" 601 if [[ "${config:0:1}" != "~" ]]; then
235 if [ "${negate}" == "!" ]; 602 config_required=1
236 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 [[ ${config:0:1} == "~" ]]; then
635 die=0
237 config="${config:1}" 636 config=${config:1}
238 if getfilevar_isset ${config} ${KV_OUT_DIR}/.config ; 637 elif [[ ${config:0:1} == "@" ]]; then
239 then 638 die=0
240 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
241 error=1 658 error=2
242 fi 659 fi
243 else 660 else
244 if ! getfilevar_isset ${config} ${KV_OUT_DIR}/.config ; 661 linux_chkconfig_present ${config} || error=1
245 then 662 fi
246 eerror " ${config}:\tshould be set in the kernel configuration, but isn't" 663
247 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]
248 fi 695 fi
249 fi 696 fi
250 done 697 done
251 698
252 if [ -n "${error}" ] ; 699 if [[ ${hard_errors_count} > 0 ]]; then
253 then
254 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."
255 eerror "Once you have satisfied these options, please try merging" 702 eerror "Once you have satisfied these options, please try merging"
256 eerror "this package again." 703 eerror "this package again."
257 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
258 fi 710 fi
259} 711}
260 712
261check_zlibinflate() { 713check_zlibinflate() {
262 # 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
263 get_version; 716 get_version
264 717
265 # 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!
266 719
267 # bug #27882 - zlib routines are only linked into the kernel 720 # bug #27882 - zlib routines are only linked into the kernel
268 # if something compiled into the kernel calls them 721 # if something compiled into the kernel calls them
269 # 722 #
270 # 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
271 # 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
272 # is on 725 # is on
273 726
274local INFLATE 727 local INFLATE
275local DEFLATE 728 local DEFLATE
276 729
277 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 730 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
278 731
279 ebegin "checking ZLIB_INFLATE" 732 ebegin "checking ZLIB_INFLATE"
280 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 733 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
281 eend $? 734 eend $?
282 [ "$?" != 0 ] && die 735 [ "$?" != 0 ] && die
283 736
284 ebegin "checking ZLIB_DEFLATE" 737 ebegin "checking ZLIB_DEFLATE"
285 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 738 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
286 eend $? 739 eend $?
287 [ "$?" != 0 ] && die 740 [ "$?" != 0 ] && die
288 741
289
290 local LINENO_START 742 local LINENO_START
291 local LINENO_END 743 local LINENO_END
292 local SYMBOLS 744 local SYMBOLS
293 local x 745 local x
294 746
295 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 747 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
296 LINENO_START="$(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)"
297 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 749 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
298 (( LINENO_END = $LINENO_END - 1 )) 750 (( LINENO_END = $LINENO_END - 1 ))
299 SYMBOLS="$(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;')"
305 # we have a winner! 757 # we have a winner!
306 einfo "${x} ensures zlib is linked into your kernel - excellent" 758 einfo "${x} ensures zlib is linked into your kernel - excellent"
307 return 0 759 return 0
308 fi 760 fi
309 done 761 done
310 762
311 eerror 763 eerror
312 eerror "This kernel module requires ZLIB library support." 764 eerror "This kernel module requires ZLIB library support."
313 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"
314 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"
315 eerror "kernel." 767 eerror "kernel."
325 eerror "Please remember to recompile and install your kernel, and reboot" 777 eerror "Please remember to recompile and install your kernel, and reboot"
326 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."
327 779
328 die "Kernel doesn't include zlib support" 780 die "Kernel doesn't include zlib support"
329} 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}

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