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1# Copyright 1999-2006 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 1.40 2006/02/16 21:46:50 exg Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.64 2009/09/06 23:12:29 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"
44#
27# To simply warn about a missing option, prepend a '~'. 45# To simply warn about a missing option, prepend a '~'.
28# ERROR_CFG <string> The error message to display when the above check 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
29# fails. <CFG> should reference the appropriate option 58# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
30# as above. ie: ERROR_MTRR="MTRR exists in the .config 59#
31# but shouldn't!!" 60# e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
32# KBUILD_OUTPUT <string> This is passed on commandline, or can be set from 61
33# 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
34# which is to be used as the kernel object directory. 65# which is to be used as the kernel object directory.
35 66
36# 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
37# set by hand. These are as follows: 68# set by hand. These are as follows:
38# 69
39# Env Var Option Description 70# @ECLASS-VARIABLE: KV_FULL
40# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1 71# @DESCRIPTION:
41# 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
42# KV_MINOR <integer> The kernel minor version. ie: 6 73
43# KV_PATCH <integer> The kernel patch version. ie: 9 74# @ECLASS-VARIABLE: KV_MAJOR
44# KV_EXTRA <string> The kernel EXTRAVERSION. ie: -gentoo 75# @DESCRIPTION:
45# 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
46# 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
47# KERNEL_DIR is invalid. 97# KERNEL_DIR is invalid.
48# KV_OUT_DIR <string> The kernel object directory. will be KV_DIR unless 98
49# koutput is used. This should be used for referencing 99# @ECLASS-VARIABLE: KV_OUT_DIR
50# .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.
51 107
52# And to ensure all the weirdness with crosscompile 108# And to ensure all the weirdness with crosscompile
53inherit toolchain-funcs versionator 109inherit toolchain-funcs versionator
54 110
55EXPORT_FUNCTIONS pkg_setup 111EXPORT_FUNCTIONS pkg_setup
67case ${ARCH} in 123case ${ARCH} in
68 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 124 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
69 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 125 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
70esac 126esac
71 127
72# These are legacy wrappers for toolchain-funcs. 128# @FUNCTION: set_arch_to_kernel
73# I dont like them here, but oh well. 129# @DESCRIPTION:
130# Set the env ARCH to match what the kernel expects.
74set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 131set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
132# @FUNCTION: set_arch_to_portage
133# @DESCRIPTION:
134# Set the env ARCH to match what portage expects.
75set_arch_to_portage() { export ARCH="$(tc-arch)"; } 135set_arch_to_portage() { export ARCH=$(tc-arch); }
76 136
77# qeinfo "Message" 137# qeinfo "Message"
78# ------------------- 138# -------------------
79# qeinfo is a quiet einfo call when EBUILD_PHASE 139# qeinfo is a quiet einfo call when EBUILD_PHASE
80# should not have visible output. 140# should not have visible output.
95qeerror() { qout eerror "${@}" ; } 155qeerror() { qout eerror "${@}" ; }
96 156
97# File Functions 157# File Functions
98# --------------------------------------- 158# ---------------------------------------
99 159
100# getfilevar accepts 2 vars as follows: 160# @FUNCTION: getfilevar
101# getfilevar <VARIABLE> <CONFIGFILE> 161# @USAGE: variable configfile
102 162# @RETURN: the value of the variable
163# @DESCRIPTION:
164# It detects the value of the variable defined in the file configfile. This is
165# done by including the configfile, and printing the variable with Make.
166# It WILL break if your makefile has missing dependencies!
103getfilevar() { 167getfilevar() {
104local ERROR workingdir basefname basedname myARCH="${ARCH}" 168local ERROR basefname basedname myARCH="${ARCH}"
105 ERROR=0 169 ERROR=0
106 170
107 [ -z "${1}" ] && ERROR=1 171 [ -z "${1}" ] && ERROR=1
108 [ ! -f "${2}" ] && ERROR=1 172 [ ! -f "${2}" ] && ERROR=1
109 173
111 then 175 then
112 echo -e "\n" 176 echo -e "\n"
113 eerror "getfilevar requires 2 variables, with the second a valid file." 177 eerror "getfilevar requires 2 variables, with the second a valid file."
114 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 178 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
115 else 179 else
116 workingdir="${PWD}"
117 basefname="$(basename ${2})" 180 basefname="$(basename ${2})"
118 basedname="$(dirname ${2})" 181 basedname="$(dirname ${2})"
119 unset ARCH 182 unset ARCH
120 183
121 cd "${basedname}" 184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
122 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ 185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
123 make ${BUILD_FIXES} -s -f - e 2>/dev/null
124 cd "${workingdir}"
125 186
126 ARCH=${myARCH} 187 ARCH=${myARCH}
127 fi 188 fi
128} 189}
129 190
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 ${KV_OUT_DIR}"
262 fi
263}
264
265# @FUNCTION: linux_chkconfig_present
266# @USAGE: option
267# @RETURN: true or false
268# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first.
130linux_chkconfig_present() { 272linux_chkconfig_present() {
131local RESULT 273local RESULT
274 [ -z "${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"
132 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
133 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
134} 280}
135 281
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.
136linux_chkconfig_module() { 289linux_chkconfig_module() {
137local 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 "${config}" ] && config="/proc/config.gz"
138 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
139 [ "${RESULT}" = "m" ] && return 0 || return 1 296 [ "${RESULT}" = "m" ] && return 0 || return 1
140} 297}
141 298
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.
142linux_chkconfig_builtin() { 306linux_chkconfig_builtin() {
143local 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 "${config}" ] && config="/proc/config.gz"
144 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
145 [ "${RESULT}" = "y" ] && return 0 || return 1 313 [ "${RESULT}" = "y" ] && return 0 || return 1
146} 314}
147 315
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.
148linux_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 "${config}" ] && config="/proc/config.gz"
149 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 328 getfilevar_noexec "CONFIG_${1}" "${config}"
150} 329}
151 330
152# Versioning Functions 331# Versioning Functions
153# --------------------------------------- 332# ---------------------------------------
154 333
155# 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.
156# 340#
341# @CODE
157# For Example where KV = 2.6.9 342# For Example where KV = 2.6.9
158# kernel_is 2 4 returns false 343# kernel_is 2 4 returns false
159# kernel_is 2 returns true 344# kernel_is 2 returns true
160# kernel_is 2 6 returns true 345# kernel_is 2 6 returns true
161# kernel_is 2 6 8 returns false 346# kernel_is 2 6 8 returns false
162# kernel_is 2 6 9 returns true 347# kernel_is 2 6 9 returns true
163# 348# @CODE
349
164# got the jist yet? 350# got the jist yet?
165 351
166kernel_is() { 352kernel_is() {
167 # if we haven't determined the version yet, we need too. 353 # if we haven't determined the version yet, we need to.
168 get_version; 354 get_version
169 local operator test value x=0 y=0 z=0 355 local operator test value x=0 y=0 z=0
170 356
171 case ${1} in 357 case ${1} in
172 lt) operator="-lt"; shift;; 358 lt) operator="-lt"; shift;;
173 gt) operator="-gt"; shift;; 359 gt) operator="-gt"; shift;;
190 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 376 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
191 test="${test}${KV_PATCH}";; 377 test="${test}${KV_PATCH}";;
192 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 378 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
193 esac 379 esac
194 done 380 done
195 381
196 [ ${test} ${operator} ${value} ] && return 0 || return 1 382 [ ${test} ${operator} ${value} ] && return 0 || return 1
197} 383}
198 384
199get_localversion() { 385get_localversion() {
200 local lv_list i x 386 local lv_list i x
209 done 395 done
210 x=${x/ /} 396 x=${x/ /}
211 echo ${x} 397 echo ${x}
212} 398}
213 399
400# internal variable, so we know to only print the warning once
401get_version_warning_done=
402
403# @FUNCTION: get_version
404# @DESCRIPTION:
405# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
406# (if KV_FULL is already set it does nothing).
407#
408# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
409#
410# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
411# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
412# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
214get_version() { 413get_version() {
215 local kbuild_output 414 local kbuild_output
216 415
217 # no need to execute this twice assuming KV_FULL is populated. 416 # no need to execute this twice assuming KV_FULL is populated.
218 # we can force by unsetting KV_FULL 417 # we can force by unsetting KV_FULL
221 # if we dont know KV_FULL, then we need too. 420 # if we dont know KV_FULL, then we need too.
222 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 421 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
223 unset KV_DIR 422 unset KV_DIR
224 423
225 # KV_DIR will contain the full path to the sources directory we should use 424 # KV_DIR will contain the full path to the sources directory we should use
425 [ -z "${get_version_warning_done}" ] && \
226 qeinfo "Determining the location of the kernel source code" 426 qeinfo "Determining the location of the kernel source code"
227 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 427 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
228 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 428 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
229 429
230 if [ -z "${KV_DIR}" ] 430 if [ -z "${KV_DIR}" ]
231 then 431 then
432 if [ -z "${get_version_warning_done}" ]; then
433 get_version_warning_done=1
232 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 434 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
233 qeinfo "This package requires Linux sources." 435 #qeinfo "This package requires Linux sources."
234 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 436 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
235 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 437 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
236 qeinfo "(or the kernel you wish to build against)." 438 qeinfo "(or the kernel you wish to build against)."
237 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 439 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
238 else 440 else
239 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 441 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
442 fi
240 fi 443 fi
241 return 1 444 return 1
242 fi 445 fi
243 446
447 if [ -z "${get_version_warning_done}" ]; then
244 qeinfo "Found kernel source directory:" 448 qeinfo "Found kernel source directory:"
245 qeinfo " ${KV_DIR}" 449 qeinfo " ${KV_DIR}"
450 fi
246 451
247 if [ ! -s "${KV_DIR}/Makefile" ] 452 if [ ! -s "${KV_DIR}/Makefile" ]
248 then 453 then
454 if [ -z "${get_version_warning_done}" ]; then
455 get_version_warning_done=1
249 qeerror "Could not find a Makefile in the kernel source directory." 456 qeerror "Could not find a Makefile in the kernel source directory."
250 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 457 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
458 fi
251 return 1 459 return 1
252 fi 460 fi
253 461
254 # OK so now we know our sources directory, but they might be using 462 # OK so now we know our sources directory, but they might be using
255 # KBUILD_OUTPUT, and we need this for .config and localversions-* 463 # KBUILD_OUTPUT, and we need this for .config and localversions-*
256 # so we better find it eh? 464 # so we better find it eh?
257 # do we pass KBUILD_OUTPUT on the CLI? 465 # do we pass KBUILD_OUTPUT on the CLI?
258 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 466 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
259 467
260 # And if we didn't pass it, we can take a nosey in the Makefile 468 # And if we didn't pass it, we can take a nosey in the Makefile
261 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 469 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
262 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 470 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
263 471
264 # 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
265 # directory name to find version information as this seems insane. 473 # directory name to find version information as this seems insane.
266 # so we parse ${KV_DIR}/Makefile 474 # so we parse ${KV_DIR}/Makefile
267 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 475 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
268 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 476 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
269 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 477 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
270 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 478 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
271 479
272 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 480 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
273 then 481 then
482 if [ -z "${get_version_warning_done}" ]; then
483 get_version_warning_done=1
274 qeerror "Could not detect kernel version." 484 qeerror "Could not detect kernel version."
275 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 485 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
486 fi
276 return 1 487 return 1
277 fi 488 fi
278 489
279 # and in newer versions we can also pull LOCALVERSION if it is set. 490 # and in newer versions we can also pull LOCALVERSION if it is set.
280 # but before we do this, we need to find if we use a different object directory. 491 # but before we do this, we need to find if we use a different object directory.
281 # This *WILL* break if the user is using localversions, but we assume it was 492 # This *WILL* break if the user is using localversions, but we assume it was
282 # caught before this if they are. 493 # caught before this if they are.
283 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 494 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
284 OUTPUT_DIR="${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}${KV_EXTRA}/build}"
285 496
286 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 497 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
287 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 498 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
288 if [ -n "${KV_OUT_DIR}" ]; 499 if [ -n "${KV_OUT_DIR}" ];
289 then 500 then
290 qeinfo "Found kernel object directory:" 501 qeinfo "Found kernel object directory:"
291 qeinfo " ${KV_OUT_DIR}" 502 qeinfo " ${KV_OUT_DIR}"
292 503
293 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})" 504 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
294 fi 505 fi
295 # and if we STILL haven't got it, then we better just set it to KV_DIR 506 # and if we STILL have not got it, then we better just set it to KV_DIR
296 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 507 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
297 508
298 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 509 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
510 if linux_config_exists; then
299 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 511 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
300 KV_LOCAL="${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 ${KV_DIR})"
518 fi
301 519
302 # And we should set KV_FULL to the full expanded version 520 # And we should set KV_FULL to the full expanded version
303 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 521 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
304 522
305 qeinfo "Found sources for kernel version:" 523 qeinfo "Found sources for kernel version:"
306 qeinfo " ${KV_FULL}" 524 qeinfo " ${KV_FULL}"
307 525
308 if [ ! -s "${KV_OUT_DIR}/.config" ]
309 then
310 qeerror "Could not find a usable .config in the kernel source directory."
311 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
312 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
313 qeerror "it points to the necessary object directory so that it might find .config."
314 return 1
315 fi
316
317 return 0 526 return 0
318} 527}
319 528
529# @FUNCTION: get_running_version
530# @DESCRIPTION:
531# It gets the version of the current running kernel and the result is the same as get_version() if the
532# function can find the sources.
320get_running_version() { 533get_running_version() {
321 KV_FULL=$(uname -r) 534 KV_FULL=$(uname -r)
322 535
323 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 536 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
324 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 537 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
343 556
344 557
345# ebuild check functions 558# ebuild check functions
346# --------------------------------------- 559# ---------------------------------------
347 560
561# @FUNCTION: check_kernel_built
562# @DESCRIPTION:
563# This function verifies that the current kernel sources have been already prepared otherwise it dies.
348check_kernel_built() { 564check_kernel_built() {
349 # 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
350 get_version; 567 get_version
351 568
352 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 569 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
353 then 570 then
354 eerror "These sources have not yet been prepared." 571 eerror "These sources have not yet been prepared."
355 eerror "We cannot build against an unprepared tree." 572 eerror "We cannot build against an unprepared tree."
362 eerror "Then please try merging this module again." 579 eerror "Then please try merging this module again."
363 die "Kernel sources need compiling first" 580 die "Kernel sources need compiling first"
364 fi 581 fi
365} 582}
366 583
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.
367check_modules_supported() { 587check_modules_supported() {
368 # 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
369 get_version; 590 get_version
370 591
371 if ! linux_chkconfig_builtin "MODULES" 592 if ! linux_chkconfig_builtin "MODULES"
372 then 593 then
373 eerror "These sources do not support loading external modules." 594 eerror "These sources do not support loading external modules."
374 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\""
375 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."
376 die "No support for external modules in ${KV_FULL} config" 597 die "No support for external modules in ${KV_FULL} config"
377 fi 598 fi
378} 599}
379 600
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.
380check_extra_config() { 605check_extra_config() {
381 local config negate error local_error i n
382 local temp_config die reworkmodulenames 606 local config negate die error reworkmodulenames
607 local soft_errors_count=0 hard_errors_count=0 config_required=0
383 608
384 # if we haven't determined the version yet, we need too. 609 # if we haven't determined the version yet, we need to
385 get_version; 610 get_version
386 611
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 "~".
614 for config in ${CONFIG_CHECK}
615 do
616 if [[ "${config:0:1}" != "~" ]]; then
617 config_required=1
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 or compiled"
629 ewarn "config:"
630 for config in ${CONFIG_CHECK}; do
631 ewarn " - ${config#\~}"
632 done
633 ewarn "You're on your own to make sure they are set if needed."
634 return 0
635 fi
636 else
637 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
638 fi
639
387 einfo "Checking for suitable kernel configuration options:" 640 einfo "Checking for suitable kernel configuration options..."
641
388 for config in ${CONFIG_CHECK} 642 for config in ${CONFIG_CHECK}
389 do 643 do
390 # if we specify any fatal, ensure we honor them 644 # if we specify any fatal, ensure we honor them
391 die=1 645 die=1
392 error=0 646 error=0
393 negate=0 647 negate=0
394 reworkmodulenames=0 648 reworkmodulenames=0
395 649
396 if [[ -z ${config//\!*} ]]; then 650 if [[ ${config:0:1} == "~" ]]; then
397 negate=1 651 die=0
398 config=${config:1} 652 config=${config:1}
399 fi 653 elif [[ ${config:0:1} == "@" ]]; then
400 if [[ -z ${config/\@*} ]]; then
401 die=2 654 die=0
402 reworkmodulenames=1 655 reworkmodulenames=1
403 config=${config:1} 656 config=${config:1}
404 fi 657 fi
405 if [[ -z ${config/\~*} ]]; then 658 if [[ ${config:0:1} == "!" ]]; then
406 die=0 659 negate=1
407 config=${config:1} 660 config=${config:1}
408 fi 661 fi
409 662
410 if [[ ${negate} == 1 ]]; then 663 if [[ ${negate} == 1 ]]; then
411 linux_chkconfig_present ${config} && error=2 664 linux_chkconfig_present ${config} && error=2
412 elif [[ ${reworkmodulenames} == 1 ]]; then 665 elif [[ ${reworkmodulenames} == 1 ]]; then
413 temp_config="${config//*:}" 666 local temp_config="${config//*:}" i n
414 config="${config//:*}" 667 config="${config//:*}"
415 if linux_chkconfig_present ${config}; then 668 if linux_chkconfig_present ${config}; then
416 for i in ${MODULE_NAMES}; do 669 for i in ${MODULE_NAMES}; do
417 n="${i//${temp_config}}" 670 n="${i//${temp_config}}"
418 [[ -z ${n//\(*} ]] && \ 671 [[ -z ${n//\(*} ]] && \
422 fi 675 fi
423 else 676 else
424 linux_chkconfig_present ${config} || error=1 677 linux_chkconfig_present ${config} || error=1
425 fi 678 fi
426 679
427 if [[ ${die} == 0 ]]; then
428 ebegin "CONFIG_${config}"
429 eend ${error}
430 else
431 if [[ ${error} > 0 ]]; then 680 if [[ ${error} > 0 ]]; then
681 local report_func="eerror" local_error
432 local_error="ERROR_${config}" 682 local_error="ERROR_${config}"
683 local_error="${!local_error}"
684
685 if [[ -z "${local_error}" ]]; then
686 # using old, deprecated format.
687 local_error="${config}_ERROR"
433 local_error="${!local_error}" 688 local_error="${!local_error}"
434 689 fi
435 if [[ -z "${local_error}" ]]; then 690 if [[ ${die} == 0 && -z "${local_error}" ]]; then
436 # using old, deprecated format. 691 #soft errors can be warnings
437 local_error="${config}_ERROR" 692 local_error="WARNING_${config}"
438 local_error="${!local_error}" 693 local_error="${!local_error}"
694 if [[ -n "${local_error}" ]] ; then
695 report_func="ewarn"
439 fi 696 fi
440
441 if [[ -z "${local_error}" ]]; then
442 [[ ${error} == 1 ]] \
443 && local_error="is not set when it should be." \
444 || local_error="should not be set. But it is."
445 local_error="CONFIG_${config}:\t ${local_error}"
446 fi
447 eerror " ${local_error}"
448 fi 697 fi
698
699 if [[ -z "${local_error}" ]]; then
700 [[ ${error} == 1 ]] \
701 && local_error="is not set when it should be." \
702 || local_error="should not be set. But it is."
703 local_error="CONFIG_${config}:\t ${local_error}"
704 fi
705 if [[ ${die} == 0 ]]; then
706 ${report_func} " ${local_error}"
707 soft_errors_count=$[soft_errors_count + 1]
708 else
709 ${report_func} " ${local_error}"
710 hard_errors_count=$[hard_errors_count + 1]
711 fi
449 fi 712 fi
450 done 713 done
451 714
452 if [[ ${error} > 0 ]]; then 715 if [[ ${hard_errors_count} > 0 ]]; then
453 eerror "Please check to make sure these options are set correctly." 716 eerror "Please check to make sure these options are set correctly."
454 eerror "Failure to do so may cause unexpected problems." 717 eerror "Failure to do so may cause unexpected problems."
455 if [[ ${die} == 1 ]]; then
456 eerror "Once you have satisfied these options, please try merging" 718 eerror "Once you have satisfied these options, please try merging"
457 eerror "this package again." 719 eerror "this package again."
458 die "Incorrect kernel configuration options" 720 die "Incorrect kernel configuration options"
459 fi 721 elif [[ ${soft_errors_count} > 0 ]]; then
722 ewarn "Please check to make sure these options are set correctly."
723 ewarn "Failure to do so may cause unexpected problems."
724 else
725 eend 0
460 fi 726 fi
461} 727}
462 728
463check_zlibinflate() { 729check_zlibinflate() {
464 # if we haven't determined the version yet, we need too. 730 # if we haven't determined the version yet, we need to
731 require_configured_kernel
465 get_version; 732 get_version
466 733
467 # although I restructured this code - I really really really dont support it! 734 # although I restructured this code - I really really really dont support it!
468 735
469 # bug #27882 - zlib routines are only linked into the kernel 736 # bug #27882 - zlib routines are only linked into the kernel
470 # if something compiled into the kernel calls them 737 # if something compiled into the kernel calls them
477 local DEFLATE 744 local DEFLATE
478 745
479 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 746 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
480 747
481 ebegin "checking ZLIB_INFLATE" 748 ebegin "checking ZLIB_INFLATE"
482 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 749 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
483 eend $? 750 eend $?
484 [ "$?" != 0 ] && die 751 [ "$?" != 0 ] && die
485 752
486 ebegin "checking ZLIB_DEFLATE" 753 ebegin "checking ZLIB_DEFLATE"
487 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 754 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
488 eend $? 755 eend $?
489 [ "$?" != 0 ] && die 756 [ "$?" != 0 ] && die
490 757
491 local LINENO_START 758 local LINENO_START
492 local LINENO_END 759 local LINENO_END
530} 797}
531 798
532################################ 799################################
533# Default pkg_setup 800# Default pkg_setup
534# Also used when inheriting linux-mod to force a get_version call 801# Also used when inheriting linux-mod to force a get_version call
535 802# @FUNCTION: linux-info_pkg_setup
803# @DESCRIPTION:
804# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
805# to support the options specified in CONFIG_CHECK (if not null)
536linux-info_pkg_setup() { 806linux-info_pkg_setup() {
537 get_version || die "Unable to calculate Linux Kernel version" 807 get_version
808 if [[ $rc -ne 0 ]]; then
809 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
810 get_running_version
811 fi
812
813 if kernel_is 2 4; then
814 if [ "$( gcc-major-version )" -eq "4" ] ; then
815 echo
816 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
817 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
818 echo
819 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
820 ewarn "newer kernel that supports gcc-4."
821 echo
822 ewarn "Also be aware that bugreports about gcc-4 not working"
823 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
824 echo
825 epause 10
826 fi
827 fi
828
538 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 829 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
539} 830}

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