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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 1.29 2005/07/11 15:08:06 swegener Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.63 2009/09/06 23:04:37 robbat2 Exp $
4# 4#
5# Description: This eclass is used as a central eclass for accessing kernel
6# related information for sources already installed.
7# It is vital for linux-mod to function correctly, and is split
8# out so that any ebuild behaviour "templates" are abstracted out
9# using additional eclasses.
10#
11# Maintainer: John Mylchreest <johnm@gentoo.org> 5# Original author: John Mylchreest <johnm@gentoo.org>
12# Copyright 2004 Gentoo Linux 6# Maintainer: kernel-misc@gentoo.org
13# 7#
14# Please direct your bugs to the current eclass maintainer :) 8# Please direct your bugs to the current eclass maintainer :)
9
10# @ECLASS: linux-info.eclass
11# @MAINTAINER:
12# kernel-misc@gentoo.org
13# @BLURB: eclass used for accessing kernel related information
14# @DESCRIPTION:
15# This eclass is used as a central eclass for accessing kernel
16# related information for 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.
15 24
16# A Couple of env vars are available to effect usage of this eclass 25# A Couple of env vars are available to effect usage of this eclass
17# These are as follows: 26# These are as follows:
18# 27
19# Env Var Option Description 28# @ECLASS-VARIABLE: KERNEL_DIR
20# KERNEL_DIR <string> The directory containing kernel the target kernel 29# @DESCRIPTION:
21# sources. 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:
22# CONFIG_CHECK <string> a list of .config options to check for before 35# A string containing a list of .config options to check for before
23# proceeding with the install. ie: CONFIG_CHECK="MTRR" 36# proceeding with the install.
37#
38# e.g.: CONFIG_CHECK="MTRR"
39#
24# You can also check that an option doesn't exist by 40# You can also check that an option doesn't exist by
25# prepending it with an exclamation mark (!). 41# prepending it with an exclamation mark (!).
42#
26# ie: CONFIG_CHECK="!MTRR" 43# e.g.: CONFIG_CHECK="!MTRR"
27# ERROR_CFG <string> The error message to display when the above check 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
28# fails. <CFG> should reference the appropriate option 58# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
29# as above. ie: ERROR_MTRR="MTRR exists in the .config 59#
30# but shouldn't!!" 60# e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
31# KBUILD_OUTPUT <string> This is passed on commandline, or can be set from 61
32# the kernel makefile. This contains the directory 62# @ECLASS-VARIABLE: KBUILD_OUTPUT
63# @DESCRIPTION:
64# A string passed on commandline, or set from the kernel makefile. It contains the directory
33# which is to be used as the kernel object directory. 65# which is to be used as the kernel object directory.
34 66
35# There are also a couple of variables which are set by this, and shouldn't be 67# There are also a couple of variables which are set by this, and shouldn't be
36# set by hand. These are as follows: 68# set by hand. These are as follows:
37# 69
38# Env Var Option Description 70# @ECLASS-VARIABLE: KV_FULL
39# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1 71# @DESCRIPTION:
40# KV_MAJOR <integer> The kernel major version. ie: 2 72# A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
41# KV_MINOR <integer> The kernel minor version. ie: 6 73
42# KV_PATCH <integer> The kernel patch version. ie: 9 74# @ECLASS-VARIABLE: KV_MAJOR
43# KV_EXTRA <string> The kernel EXTRAVERSION. ie: -gentoo 75# @DESCRIPTION:
44# KV_LOCAL <string> The kernel LOCALVERSION concatenation. ie: -johnm 76# A read-only variable. It's an integer containing the kernel major version. ie: 2
45# KV_DIR <string> The kernel source directory, will be null if 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
46# KERNEL_DIR is invalid. 97# KERNEL_DIR is invalid.
47# KV_OUT_DIR <string> The kernel object directory. will be KV_DIR unless 98
48# koutput is used. This should be used for referencing 99# @ECLASS-VARIABLE: KV_OUT_DIR
49# .config. 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.
50 107
51# And to ensure all the weirdness with crosscompile 108# And to ensure all the weirdness with crosscompile
52inherit toolchain-funcs versionator 109inherit toolchain-funcs versionator
53 110
54EXPORT_FUNCTIONS pkg_setup 111EXPORT_FUNCTIONS pkg_setup
112
113DEPEND="kernel_linux? ( virtual/linux-sources )"
114RDEPEND=""
55 115
56# Overwritable environment Var's 116# Overwritable environment Var's
57# --------------------------------------- 117# ---------------------------------------
58KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 118KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
59 119
63case ${ARCH} in 123case ${ARCH} in
64 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 124 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
65 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 125 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
66esac 126esac
67 127
68# These are legacy wrappers for toolchain-funcs. 128# @FUNCTION: set_arch_to_kernel
69# I dont like them here, but oh well. 129# @DESCRIPTION:
130# Set the env ARCH to match what the kernel expects.
70set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 131set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
132# @FUNCTION: set_arch_to_portage
133# @DESCRIPTION:
134# Set the env ARCH to match what portage expects.
71set_arch_to_portage() { export ARCH="$(tc-arch)"; } 135set_arch_to_portage() { export ARCH=$(tc-arch); }
72 136
73# qeinfo "Message" 137# qeinfo "Message"
74# ------------------- 138# -------------------
75# qeinfo is a quiet einfo call when EBUILD_PHASE 139# qeinfo is a quiet einfo call when EBUILD_PHASE
76# should not have visible output. 140# should not have visible output.
91qeerror() { qout eerror "${@}" ; } 155qeerror() { qout eerror "${@}" ; }
92 156
93# File Functions 157# File Functions
94# --------------------------------------- 158# ---------------------------------------
95 159
96# getfilevar accepts 2 vars as follows: 160# @FUNCTION: getfilevar
97# getfilevar <VARIABLE> <CONFIGFILE> 161# @USAGE: variable configfile
98 162# @RETURN: the value of the variable
163# @DESCRIPTION:
164# It detects the value of the variable defined in the file configfile. This is
165# done by including the configfile, and printing the variable with Make.
166# It WILL break if your makefile has missing dependencies!
99getfilevar() { 167getfilevar() {
100local ERROR workingdir basefname basedname myARCH="${ARCH}" 168local ERROR basefname basedname myARCH="${ARCH}"
101 ERROR=0 169 ERROR=0
102 170
103 [ -z "${1}" ] && ERROR=1 171 [ -z "${1}" ] && ERROR=1
104 [ ! -f "${2}" ] && ERROR=1 172 [ ! -f "${2}" ] && ERROR=1
105 173
107 then 175 then
108 echo -e "\n" 176 echo -e "\n"
109 eerror "getfilevar requires 2 variables, with the second a valid file." 177 eerror "getfilevar requires 2 variables, with the second a valid file."
110 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 178 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
111 else 179 else
112 workingdir=${PWD}
113 basefname=$(basename ${2}) 180 basefname="$(basename ${2})"
114 basedname=$(dirname ${2}) 181 basedname="$(dirname ${2})"
115 unset ARCH 182 unset ARCH
116 183
117 cd ${basedname} 184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
118 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ 185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
119 make ${BUILD_FIXES} -s -f - e 2>/dev/null
120 cd ${workingdir}
121 186
122 ARCH=${myARCH} 187 ARCH=${myARCH}
123 fi 188 fi
124} 189}
125 190
191# @FUNCTION: getfilevar_noexec
192# @USAGE: variable configfile
193# @RETURN: the value of the variable
194# @DESCRIPTION:
195# It detects the value of the variable defined in the file configfile.
196# This is done with sed matching an expression only. If the variable is defined,
197# you will run into problems. See getfilevar for those cases.
198getfilevar_noexec() {
199 local ERROR basefname basedname mycat myARCH="${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 ${KV_OUT_DIR}"
262 fi
263}
264
265# @FUNCTION: linux_chkconfig_present
266# @USAGE: option
267# @RETURN: true or false
268# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first.
126linux_chkconfig_present() { 272linux_chkconfig_present() {
127local RESULT 273local RESULT
274 [ -z "${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"
128 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
129 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
130} 280}
131 281
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.
132linux_chkconfig_module() { 289linux_chkconfig_module() {
133local RESULT 290local RESULT
291 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
292 local config
293 config="${KV_OUT_DIR}/.config"
294 [ ! -f "${config}" ] && config="/proc/config.gz"
134 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
135 [ "${RESULT}" = "m" ] && return 0 || return 1 296 [ "${RESULT}" = "m" ] && return 0 || return 1
136} 297}
137 298
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.
138linux_chkconfig_builtin() { 306linux_chkconfig_builtin() {
139local RESULT 307local RESULT
308 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
309 local config
310 config="${KV_OUT_DIR}/.config"
311 [ ! -f "${config}" ] && config="/proc/config.gz"
140 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
141 [ "${RESULT}" = "y" ] && return 0 || return 1 313 [ "${RESULT}" = "y" ] && return 0 || return 1
142} 314}
143 315
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.
144linux_chkconfig_string() { 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 "${config}" ] && config="/proc/config.gz"
145 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 328 getfilevar_noexec "CONFIG_${1}" "${config}"
146} 329}
147 330
148# Versioning Functions 331# Versioning Functions
149# --------------------------------------- 332# ---------------------------------------
150 333
151# 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.
152# 340#
341# @CODE
153# For Example where KV = 2.6.9 342# For Example where KV = 2.6.9
154# kernel_is 2 4 returns false 343# kernel_is 2 4 returns false
155# kernel_is 2 returns true 344# kernel_is 2 returns true
156# kernel_is 2 6 returns true 345# kernel_is 2 6 returns true
157# kernel_is 2 6 8 returns false 346# kernel_is 2 6 8 returns false
158# kernel_is 2 6 9 returns true 347# kernel_is 2 6 9 returns true
159# 348# @CODE
349
160# got the jist yet? 350# got the jist yet?
161 351
162kernel_is() { 352kernel_is() {
163 # if we haven't determined the version yet, we need too. 353 # if we haven't determined the version yet, we need to.
164 get_version; 354 get_version
165 local operator test value x=0 y=0 z=0 355 local operator test value x=0 y=0 z=0
166 356
167 case ${1} in 357 case ${1} in
168 lt) operator="-lt"; shift;; 358 lt) operator="-lt"; shift;;
169 gt) operator="-gt"; shift;; 359 gt) operator="-gt"; shift;;
186 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 376 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
187 test="${test}${KV_PATCH}";; 377 test="${test}${KV_PATCH}";;
188 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 378 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
189 esac 379 esac
190 done 380 done
191 381
192 [ ${test} ${operator} ${value} ] && return 0 || return 1 382 [ ${test} ${operator} ${value} ] && return 0 || return 1
193} 383}
194 384
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 ${x}
398}
399
400# internal variable, so we know to only print the warning once
401get_version_warning_done=
402
403# @FUNCTION: get_version
404# @DESCRIPTION:
405# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
406# (if KV_FULL is already set it does nothing).
407#
408# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
409#
410# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
411# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
412# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
195get_version() { 413get_version() {
196 local kbuild_output 414 local kbuild_output
197 415
198 # no need to execute this twice assuming KV_FULL is populated. 416 # no need to execute this twice assuming KV_FULL is populated.
199 # we can force by unsetting KV_FULL 417 # we can force by unsetting KV_FULL
202 # if we dont know KV_FULL, then we need too. 420 # if we dont know KV_FULL, then we need too.
203 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 421 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
204 unset KV_DIR 422 unset KV_DIR
205 423
206 # KV_DIR will contain the full path to the sources directory we should use 424 # KV_DIR will contain the full path to the sources directory we should use
425 [ -z "${get_version_warning_done}" ] && \
207 qeinfo "Determining the location of the kernel source code" 426 qeinfo "Determining the location of the kernel source code"
208 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 427 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
209 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 428 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
210 429
211 if [ -z "${KV_DIR}" ] 430 if [ -z "${KV_DIR}" ]
212 then 431 then
432 if [ -z "${get_version_warning_done}" ]; then
433 get_version_warning_done=1
213 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 434 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
214 qeinfo "This package requires Linux sources." 435 #qeinfo "This package requires Linux sources."
215 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 436 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
216 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 437 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
217 qeinfo "(or the kernel you wish to build against)." 438 qeinfo "(or the kernel you wish to build against)."
218 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 439 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
219 else 440 else
220 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 441 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
442 fi
221 fi 443 fi
222 return 1 444 return 1
223 fi 445 fi
224 446
447 if [ -z "${get_version_warning_done}" ]; then
225 qeinfo "Found kernel source directory:" 448 qeinfo "Found kernel source directory:"
226 qeinfo " ${KV_DIR}" 449 qeinfo " ${KV_DIR}"
450 fi
227 451
228 if [ ! -s "${KV_DIR}/Makefile" ] 452 if [ ! -s "${KV_DIR}/Makefile" ]
229 then 453 then
454 if [ -z "${get_version_warning_done}" ]; then
455 get_version_warning_done=1
230 qeerror "Could not find a Makefile in the kernel source directory." 456 qeerror "Could not find a Makefile in the kernel source directory."
231 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 457 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
458 fi
232 return 1 459 return 1
233 fi 460 fi
234 461
235 # OK so now we know our sources directory, but they might be using 462 # OK so now we know our sources directory, but they might be using
236 # KBUILD_OUTPUT, and we need this for .config and localversions-* 463 # KBUILD_OUTPUT, and we need this for .config and localversions-*
237 # so we better find it eh? 464 # so we better find it eh?
238 # do we pass KBUILD_OUTPUT on the CLI? 465 # do we pass KBUILD_OUTPUT on the CLI?
239 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 466 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
240 467
241 # And if we didn't pass it, we can take a nosey in the Makefile 468 # And if we didn't pass it, we can take a nosey in the Makefile
242 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 469 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
243 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 470 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
244 471
245 # And contrary to existing functions I feel we shouldn't trust the 472 # And contrary to existing functions I feel we shouldn't trust the
246 # directory name to find version information as this seems insane. 473 # directory name to find version information as this seems insane.
247 # so we parse ${KV_DIR}/Makefile 474 # so we parse ${KV_DIR}/Makefile
248 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 475 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
249 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 476 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
250 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 477 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
251 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 478 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
252 479
253 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 480 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
254 then 481 then
482 if [ -z "${get_version_warning_done}" ]; then
483 get_version_warning_done=1
255 qeerror "Could not detect kernel version." 484 qeerror "Could not detect kernel version."
256 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 485 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
486 fi
257 return 1 487 return 1
258 fi 488 fi
259 489
260 # and in newer versions we can also pull LOCALVERSION if it is set. 490 # and in newer versions we can also pull LOCALVERSION if it is set.
261 # but before we do this, we need to find if we use a different object directory. 491 # but before we do this, we need to find if we use a different object directory.
262 # This *WILL* break if the user is using localversions, but we assume it was 492 # This *WILL* break if the user is using localversions, but we assume it was
263 # caught before this if they are. 493 # caught before this if they are.
264 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 494 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
265 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" 495 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
266 496
267 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 497 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
268 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 498 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
269 if [ -n "${KV_OUT_DIR}" ]; 499 if [ -n "${KV_OUT_DIR}" ];
270 then 500 then
271 qeinfo "Found kernel object directory:" 501 qeinfo "Found kernel object directory:"
272 qeinfo " ${KV_OUT_DIR}" 502 qeinfo " ${KV_OUT_DIR}"
273 503
274 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)" 504 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
275 fi 505 fi
276 # and if we STILL haven't got it, then we better just set it to KV_DIR 506 # and if we STILL have not got it, then we better just set it to KV_DIR
277 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 507 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
278 508
279 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)" 509 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
510 if linux_config_exists; then
280 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 511 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
281 KV_LOCAL="${KV_LOCAL//\"/}" 512 KV_LOCAL="${KV_LOCAL//\"/}"
513
514 # For things like git that can append extra stuff:
515 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
516 linux_chkconfig_builtin LOCALVERSION_AUTO &&
517 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
518 fi
282 519
283 # And we should set KV_FULL to the full expanded version 520 # And we should set KV_FULL to the full expanded version
284 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 521 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
285 522
286 qeinfo "Found sources for kernel version:" 523 qeinfo "Found sources for kernel version:"
287 qeinfo " ${KV_FULL}" 524 qeinfo " ${KV_FULL}"
288 525
289 if [ ! -s "${KV_OUT_DIR}/.config" ]
290 then
291 qeerror "Could not find a usable .config in the kernel source directory."
292 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
293 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
294 qeerror "it points to the necessary object directory so that it might find .config."
295 return 1
296 fi
297
298 return 0 526 return 0
299} 527}
300 528
529# @FUNCTION: get_running_version
530# @DESCRIPTION:
531# It gets the version of the current running kernel and the result is the same as get_version() if the
532# function can find the sources.
301get_running_version() { 533get_running_version() {
302 KV_FULL=$(uname -r) 534 KV_FULL=$(uname -r)
303 535
304 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 536 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
305 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 537 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
324 556
325 557
326# ebuild check functions 558# ebuild check functions
327# --------------------------------------- 559# ---------------------------------------
328 560
561# @FUNCTION: check_kernel_built
562# @DESCRIPTION:
563# This function verifies that the current kernel sources have been already prepared otherwise it dies.
329check_kernel_built() { 564check_kernel_built() {
330 # if we haven't determined the version yet, we need too. 565 # if we haven't determined the version yet, we need to
566 require_configured_kernel
331 get_version; 567 get_version
332 568
333 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 569 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
334 then 570 then
335 eerror "These sources have not yet been prepared." 571 eerror "These sources have not yet been prepared."
336 eerror "We cannot build against an unprepared tree." 572 eerror "We cannot build against an unprepared tree."
343 eerror "Then please try merging this module again." 579 eerror "Then please try merging this module again."
344 die "Kernel sources need compiling first" 580 die "Kernel sources need compiling first"
345 fi 581 fi
346} 582}
347 583
584# @FUNCTION: check_modules_supported
585# @DESCRIPTION:
586# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
348check_modules_supported() { 587check_modules_supported() {
349 # if we haven't determined the version yet, we need too. 588 # if we haven't determined the version yet, we need too.
589 require_configured_kernel
350 get_version; 590 get_version
351 591
352 if ! linux_chkconfig_builtin "MODULES" 592 if ! linux_chkconfig_builtin "MODULES"
353 then 593 then
354 eerror "These sources do not support loading external modules." 594 eerror "These sources do not support loading external modules."
355 eerror "to be able to use this module please enable \"Loadable modules support\"" 595 eerror "to be able to use this module please enable \"Loadable modules support\""
356 eerror "in your kernel, recompile and then try merging this module again." 596 eerror "in your kernel, recompile and then try merging this module again."
357 die "No support for external modules in ${KV_FULL} config" 597 die "No support for external modules in ${KV_FULL} config"
358 fi 598 fi
359} 599}
360 600
601# @FUNCTION: check_extra_config
602# @DESCRIPTION:
603# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
604# the prefix ~ is not used) doesn't satisfy the directive.
361check_extra_config() { 605check_extra_config() {
362 local config negate error local_error i n temp_config 606 local config negate die error reworkmodulenames
607 local soft_errors_count=0 hard_errors_count=0 config_required=0
363 608
364 # if we haven't determined the version yet, we need too. 609 # if we haven't determined the version yet, we need to
365 get_version; 610 get_version
366 611
367 einfo "Checking for suitable kernel configuration options" 612 # Determine if we really need a .config. The only time when we don't need
613 # one is when all of the CONFIG_CHECK options are prefixed with "~".
368 for config in ${CONFIG_CHECK} 614 for config in ${CONFIG_CHECK}
369 do 615 do
370 negate="${config:0:1}" 616 if [[ "${config:0:1}" != "~" ]]; then
371 if [ "${negate}" == "!" ]; 617 config_required=1
372 then 618 break
619 fi
620 done
621
622 if [[ ${config_required} == 0 ]]; then
623 # In the case where we don't require a .config, we can now bail out
624 # if the user has no .config as there is nothing to do. Otherwise
625 # code later will cause a failure due to missing .config.
626 if ! linux_config_exists; then
627 ewarn "Unable to check for the following kernel config options due"
628 ewarn "to absence of any configured kernel sources:"
629 for config in ${CONFIG_CHECK}; do
630 ewarn " - ${config#\~}"
631 done
632 ewarn "You're on your own to make sure they are set if needed."
633 return 0
634 fi
635 else
636 require_configured_kernel
637 fi
638
639 einfo "Checking for suitable kernel configuration options..."
640
641 for config in ${CONFIG_CHECK}
642 do
643 # if we specify any fatal, ensure we honor them
644 die=1
645 error=0
646 negate=0
647 reworkmodulenames=0
648
649 if [[ ${config:0:1} == "~" ]]; then
650 die=0
373 config="${config:1}" 651 config=${config:1}
652 elif [[ ${config:0:1} == "@" ]]; then
653 die=0
654 reworkmodulenames=1
655 config=${config:1}
656 fi
657 if [[ ${config:0:1} == "!" ]]; then
658 negate=1
659 config=${config:1}
660 fi
661
662 if [[ ${negate} == 1 ]]; then
663 linux_chkconfig_present ${config} && error=2
664 elif [[ ${reworkmodulenames} == 1 ]]; then
665 local temp_config="${config//*:}" i n
666 config="${config//:*}"
374 if linux_chkconfig_present ${config} 667 if linux_chkconfig_present ${config}; then
375 then 668 for i in ${MODULE_NAMES}; do
669 n="${i//${temp_config}}"
670 [[ -z ${n//\(*} ]] && \
671 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
672 done
673 error=2
674 fi
675 else
676 linux_chkconfig_present ${config} || error=1
677 fi
678
679 if [[ ${error} > 0 ]]; then
680 local report_func="eerror" local_error
681 local_error="ERROR_${config}"
682 local_error="${!local_error}"
683
684 if [[ -z "${local_error}" ]]; then
685 # using old, deprecated format.
376 local_error="${config}_ERROR" 686 local_error="${config}_ERROR"
377 local_error="${!local_error}" 687 local_error="${!local_error}"
378 [ -n "${local_error}" ] && eerror " ${local_error}" || \
379 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is."
380 error=1
381 fi 688 fi
382 elif [ "${negate}" == "@" ]; 689 if [[ ${die} == 0 && -z "${local_error}" ]]; then
383 then 690 #soft errors can be warnings
384 # we never call this unless we are using MODULE_NAMES
385
386 config="${config:1}"
387 temp_config="${config//*:}"
388 config="${config//:*}"
389 if linux_chkconfig_present ${config}
390 then
391 local_error="${config}_ERROR" 691 local_error="WARNING_${config}"
392 local_error="${!local_error}" 692 local_error="${!local_error}"
393 [ -n "${local_error}" ] && eerror " ${local_error}" || \ 693 if [[ -n "${local_error}" ]] ; then
394 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is." 694 report_func="ewarn"
395 695 fi
396 for i in ${MODULE_NAMES}
397 do
398 n="${i//${temp_config}}"
399 [ -z "${n//(*}" ] && MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
400 done
401 error=0
402 fi 696 fi
403 else
404 if ! linux_chkconfig_present ${config}
405 then
406 # Support the new syntax first.
407 local_error="ERROR_${config}"
408 local_error="${!local_error}"
409 697
410 # then fall back on the older syntax.
411 if [[ -z ${local_error} ]] ; then 698 if [[ -z "${local_error}" ]]; then
412 local_error="${config}_ERROR" 699 [[ ${error} == 1 ]] \
413 local_error="${!local_error}" 700 && local_error="is not set when it should be." \
414 fi 701 || local_error="should not be set. But it is."
415 702 local_error="CONFIG_${config}:\t ${local_error}"
416 [[ -n ${local_error} ]] && eerror " ${local_error}" || \
417 eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't"
418 error=1
419 fi 703 fi
704 if [[ ${die} == 0 ]]; then
705 ${report_func} " ${local_error}"
706 soft_errors_count=$[soft_errors_count + 1]
707 else
708 ${report_func} " ${local_error}"
709 hard_errors_count=$[hard_errors_count + 1]
710 fi
420 fi 711 fi
421 done 712 done
422 713
423 if [ "${error}" == 1 ] ; 714 if [[ ${hard_errors_count} > 0 ]]; then
424 then
425 eerror "Please check to make sure these options are set correctly." 715 eerror "Please check to make sure these options are set correctly."
716 eerror "Failure to do so may cause unexpected problems."
426 eerror "Once you have satisfied these options, please try merging" 717 eerror "Once you have satisfied these options, please try merging"
427 eerror "this package again." 718 eerror "this package again."
428 die "Incorrect kernel configuration options" 719 die "Incorrect kernel configuration options"
720 elif [[ ${soft_errors_count} > 0 ]]; then
721 ewarn "Please check to make sure these options are set correctly."
722 ewarn "Failure to do so may cause unexpected problems."
723 else
724 eend 0
429 fi 725 fi
430} 726}
431 727
432check_zlibinflate() { 728check_zlibinflate() {
433 # if we haven't determined the version yet, we need too. 729 # if we haven't determined the version yet, we need to
730 require_configured_kernel
434 get_version; 731 get_version
435 732
436 # although I restructured this code - I really really really dont support it! 733 # although I restructured this code - I really really really dont support it!
437 734
438 # bug #27882 - zlib routines are only linked into the kernel 735 # bug #27882 - zlib routines are only linked into the kernel
439 # if something compiled into the kernel calls them 736 # if something compiled into the kernel calls them
446 local DEFLATE 743 local DEFLATE
447 744
448 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 745 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
449 746
450 ebegin "checking ZLIB_INFLATE" 747 ebegin "checking ZLIB_INFLATE"
451 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 748 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
452 eend $? 749 eend $?
453 [ "$?" != 0 ] && die 750 [ "$?" != 0 ] && die
454 751
455 ebegin "checking ZLIB_DEFLATE" 752 ebegin "checking ZLIB_DEFLATE"
456 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 753 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
457 eend $? 754 eend $?
458 [ "$?" != 0 ] && die 755 [ "$?" != 0 ] && die
459 756
460 local LINENO_START 757 local LINENO_START
461 local LINENO_END 758 local LINENO_END
499} 796}
500 797
501################################ 798################################
502# Default pkg_setup 799# Default pkg_setup
503# Also used when inheriting linux-mod to force a get_version call 800# Also used when inheriting linux-mod to force a get_version call
504 801# @FUNCTION: linux-info_pkg_setup
802# @DESCRIPTION:
803# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
804# to support the options specified in CONFIG_CHECK (if not null)
505linux-info_pkg_setup() { 805linux-info_pkg_setup() {
506 get_version || die "Unable to calculate Linux Kernel version" 806 get_version
807 if [[ $rc -ne 0 ]]; then
808 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
809 get_running_version
810 fi
811
812 if kernel_is 2 4; then
813 if [ "$( gcc-major-version )" -eq "4" ] ; then
814 echo
815 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
816 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
817 echo
818 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
819 ewarn "newer kernel that supports gcc-4."
820 echo
821 ewarn "Also be aware that bugreports about gcc-4 not working"
822 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
823 echo
824 epause 10
825 fi
826 fi
827
507 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 828 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
508} 829}

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