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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 1.37 2006/01/14 00:15:07 vapier 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"
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
112
113DEPEND="kernel_linux? ( virtual/linux-sources )"
114RDEPEND=""
56 115
57# Overwritable environment Var's 116# Overwritable environment Var's
58# --------------------------------------- 117# ---------------------------------------
59KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 118KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
60 119
64case ${ARCH} in 123case ${ARCH} in
65 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 124 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
66 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 125 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
67esac 126esac
68 127
69# These are legacy wrappers for toolchain-funcs. 128# @FUNCTION: set_arch_to_kernel
70# I dont like them here, but oh well. 129# @DESCRIPTION:
130# Set the env ARCH to match what the kernel expects.
71set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 131set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
132# @FUNCTION: set_arch_to_portage
133# @DESCRIPTION:
134# Set the env ARCH to match what portage expects.
72set_arch_to_portage() { export ARCH="$(tc-arch)"; } 135set_arch_to_portage() { export ARCH=$(tc-arch); }
73 136
74# qeinfo "Message" 137# qeinfo "Message"
75# ------------------- 138# -------------------
76# qeinfo is a quiet einfo call when EBUILD_PHASE 139# qeinfo is a quiet einfo call when EBUILD_PHASE
77# should not have visible output. 140# should not have visible output.
92qeerror() { qout eerror "${@}" ; } 155qeerror() { qout eerror "${@}" ; }
93 156
94# File Functions 157# File Functions
95# --------------------------------------- 158# ---------------------------------------
96 159
97# getfilevar accepts 2 vars as follows: 160# @FUNCTION: getfilevar
98# getfilevar <VARIABLE> <CONFIGFILE> 161# @USAGE: variable configfile
99 162# @RETURN: the value of the variable
163# @DESCRIPTION:
164# It detects the value of the variable defined in the file configfile. This is
165# done by including the configfile, and printing the variable with Make.
166# It WILL break if your makefile has missing dependencies!
100getfilevar() { 167getfilevar() {
101local ERROR workingdir basefname basedname myARCH="${ARCH}" 168local ERROR basefname basedname myARCH="${ARCH}"
102 ERROR=0 169 ERROR=0
103 170
104 [ -z "${1}" ] && ERROR=1 171 [ -z "${1}" ] && ERROR=1
105 [ ! -f "${2}" ] && ERROR=1 172 [ ! -f "${2}" ] && ERROR=1
106 173
108 then 175 then
109 echo -e "\n" 176 echo -e "\n"
110 eerror "getfilevar requires 2 variables, with the second a valid file." 177 eerror "getfilevar requires 2 variables, with the second a valid file."
111 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 178 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
112 else 179 else
113 workingdir="${PWD}"
114 basefname="$(basename ${2})" 180 basefname="$(basename ${2})"
115 basedname="$(dirname ${2})" 181 basedname="$(dirname ${2})"
116 unset ARCH 182 unset ARCH
117 183
118 cd "${basedname}" 184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
119 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ 185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
120 make ${BUILD_FIXES} -s -f - e 2>/dev/null
121 cd "${workingdir}"
122 186
123 ARCH=${myARCH} 187 ARCH=${myARCH}
124 fi 188 fi
125} 189}
126 190
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 ${KV_OUT_DIR}"
262 fi
263}
264
265# @FUNCTION: linux_chkconfig_present
266# @USAGE: option
267# @RETURN: true or false
268# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first.
127linux_chkconfig_present() { 272linux_chkconfig_present() {
128local RESULT 273local RESULT
274 [ -z "${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"
129 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
130 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
131} 280}
132 281
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.
133linux_chkconfig_module() { 289linux_chkconfig_module() {
134local 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 "${config}" ] && config="/proc/config.gz"
135 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
136 [ "${RESULT}" = "m" ] && return 0 || return 1 296 [ "${RESULT}" = "m" ] && return 0 || return 1
137} 297}
138 298
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.
139linux_chkconfig_builtin() { 306linux_chkconfig_builtin() {
140local 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 "${config}" ] && config="/proc/config.gz"
141 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
142 [ "${RESULT}" = "y" ] && return 0 || return 1 313 [ "${RESULT}" = "y" ] && return 0 || return 1
143} 314}
144 315
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.
145linux_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 "${config}" ] && config="/proc/config.gz"
146 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 328 getfilevar_noexec "CONFIG_${1}" "${config}"
147} 329}
148 330
149# Versioning Functions 331# Versioning Functions
150# --------------------------------------- 332# ---------------------------------------
151 333
152# 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.
153# 340#
341# @CODE
154# For Example where KV = 2.6.9 342# For Example where KV = 2.6.9
155# kernel_is 2 4 returns false 343# kernel_is 2 4 returns false
156# kernel_is 2 returns true 344# kernel_is 2 returns true
157# kernel_is 2 6 returns true 345# kernel_is 2 6 returns true
158# kernel_is 2 6 8 returns false 346# kernel_is 2 6 8 returns false
159# kernel_is 2 6 9 returns true 347# kernel_is 2 6 9 returns true
160# 348# @CODE
349
161# got the jist yet? 350# got the jist yet?
162 351
163kernel_is() { 352kernel_is() {
164 # if we haven't determined the version yet, we need too. 353 # if we haven't determined the version yet, we need to.
165 get_version; 354 get_version
166 local operator test value x=0 y=0 z=0 355 local operator test value x=0 y=0 z=0
167 356
168 case ${1} in 357 case ${1} in
169 lt) operator="-lt"; shift;; 358 lt) operator="-lt"; shift;;
170 gt) operator="-gt"; shift;; 359 gt) operator="-gt"; shift;;
187 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 376 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
188 test="${test}${KV_PATCH}";; 377 test="${test}${KV_PATCH}";;
189 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 378 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
190 esac 379 esac
191 done 380 done
192 381
193 [ ${test} ${operator} ${value} ] && return 0 || return 1 382 [ ${test} ${operator} ${value} ] && return 0 || return 1
194} 383}
195 384
196get_localversion() { 385get_localversion() {
197 local lv_list i x 386 local lv_list i x
206 done 395 done
207 x=${x/ /} 396 x=${x/ /}
208 echo ${x} 397 echo ${x}
209} 398}
210 399
400# internal variable, so we know to only print the warning once
401get_version_warning_done=
402
403# @FUNCTION: get_version
404# @DESCRIPTION:
405# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
406# (if KV_FULL is already set it does nothing).
407#
408# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
409#
410# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
411# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
412# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
211get_version() { 413get_version() {
212 local kbuild_output 414 local kbuild_output
213 415
214 # no need to execute this twice assuming KV_FULL is populated. 416 # no need to execute this twice assuming KV_FULL is populated.
215 # we can force by unsetting KV_FULL 417 # we can force by unsetting KV_FULL
218 # if we dont know KV_FULL, then we need too. 420 # if we dont know KV_FULL, then we need too.
219 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 421 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
220 unset KV_DIR 422 unset KV_DIR
221 423
222 # KV_DIR will contain the full path to the sources directory we should use 424 # KV_DIR will contain the full path to the sources directory we should use
425 [ -z "${get_version_warning_done}" ] && \
223 qeinfo "Determining the location of the kernel source code" 426 qeinfo "Determining the location of the kernel source code"
224 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 427 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
225 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 428 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
226 429
227 if [ -z "${KV_DIR}" ] 430 if [ -z "${KV_DIR}" ]
228 then 431 then
432 if [ -z "${get_version_warning_done}" ]; then
433 get_version_warning_done=1
229 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 434 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
230 qeinfo "This package requires Linux sources." 435 #qeinfo "This package requires Linux sources."
231 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 436 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
232 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 437 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
233 qeinfo "(or the kernel you wish to build against)." 438 qeinfo "(or the kernel you wish to build against)."
234 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 439 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
235 else 440 else
236 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 441 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
442 fi
237 fi 443 fi
238 return 1 444 return 1
239 fi 445 fi
240 446
447 if [ -z "${get_version_warning_done}" ]; then
241 qeinfo "Found kernel source directory:" 448 qeinfo "Found kernel source directory:"
242 qeinfo " ${KV_DIR}" 449 qeinfo " ${KV_DIR}"
450 fi
243 451
244 if [ ! -s "${KV_DIR}/Makefile" ] 452 if [ ! -s "${KV_DIR}/Makefile" ]
245 then 453 then
454 if [ -z "${get_version_warning_done}" ]; then
455 get_version_warning_done=1
246 qeerror "Could not find a Makefile in the kernel source directory." 456 qeerror "Could not find a Makefile in the kernel source directory."
247 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 457 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
458 fi
248 return 1 459 return 1
249 fi 460 fi
250 461
251 # OK so now we know our sources directory, but they might be using 462 # OK so now we know our sources directory, but they might be using
252 # KBUILD_OUTPUT, and we need this for .config and localversions-* 463 # KBUILD_OUTPUT, and we need this for .config and localversions-*
253 # so we better find it eh? 464 # so we better find it eh?
254 # do we pass KBUILD_OUTPUT on the CLI? 465 # do we pass KBUILD_OUTPUT on the CLI?
255 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 466 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
256 467
257 # And if we didn't pass it, we can take a nosey in the Makefile 468 # And if we didn't pass it, we can take a nosey in the Makefile
258 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 469 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
259 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 470 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
260 471
261 # 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
262 # directory name to find version information as this seems insane. 473 # directory name to find version information as this seems insane.
263 # so we parse ${KV_DIR}/Makefile 474 # so we parse ${KV_DIR}/Makefile
264 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 475 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
265 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 476 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
266 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 477 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
267 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 478 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
268 479
269 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 480 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
270 then 481 then
482 if [ -z "${get_version_warning_done}" ]; then
483 get_version_warning_done=1
271 qeerror "Could not detect kernel version." 484 qeerror "Could not detect kernel version."
272 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 485 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
486 fi
273 return 1 487 return 1
274 fi 488 fi
275 489
276 # and in newer versions we can also pull LOCALVERSION if it is set. 490 # and in newer versions we can also pull LOCALVERSION if it is set.
277 # but before we do this, we need to find if we use a different object directory. 491 # but before we do this, we need to find if we use a different object directory.
278 # This *WILL* break if the user is using localversions, but we assume it was 492 # This *WILL* break if the user is using localversions, but we assume it was
279 # caught before this if they are. 493 # caught before this if they are.
280 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 494 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
281 OUTPUT_DIR="${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}${KV_EXTRA}/build}"
282 496
283 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 497 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
284 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 498 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
285 if [ -n "${KV_OUT_DIR}" ]; 499 if [ -n "${KV_OUT_DIR}" ];
286 then 500 then
287 qeinfo "Found kernel object directory:" 501 qeinfo "Found kernel object directory:"
288 qeinfo " ${KV_OUT_DIR}" 502 qeinfo " ${KV_OUT_DIR}"
289 503
290 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})" 504 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
291 fi 505 fi
292 # and if we STILL haven't got it, then we better just set it to KV_DIR 506 # and if we STILL have not got it, then we better just set it to KV_DIR
293 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 507 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
294 508
295 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 509 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
510 if linux_config_exists; then
296 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 511 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
297 KV_LOCAL="${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 ${KV_DIR})"
518 fi
298 519
299 # And we should set KV_FULL to the full expanded version 520 # And we should set KV_FULL to the full expanded version
300 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 521 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
301 522
302 qeinfo "Found sources for kernel version:" 523 qeinfo "Found sources for kernel version:"
303 qeinfo " ${KV_FULL}" 524 qeinfo " ${KV_FULL}"
304 525
305 if [ ! -s "${KV_OUT_DIR}/.config" ]
306 then
307 qeerror "Could not find a usable .config in the kernel source directory."
308 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
309 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
310 qeerror "it points to the necessary object directory so that it might find .config."
311 return 1
312 fi
313
314 return 0 526 return 0
315} 527}
316 528
529# @FUNCTION: get_running_version
530# @DESCRIPTION:
531# It gets the version of the current running kernel and the result is the same as get_version() if the
532# function can find the sources.
317get_running_version() { 533get_running_version() {
318 KV_FULL=$(uname -r) 534 KV_FULL=$(uname -r)
319 535
320 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 536 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
321 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 537 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
340 556
341 557
342# ebuild check functions 558# ebuild check functions
343# --------------------------------------- 559# ---------------------------------------
344 560
561# @FUNCTION: check_kernel_built
562# @DESCRIPTION:
563# This function verifies that the current kernel sources have been already prepared otherwise it dies.
345check_kernel_built() { 564check_kernel_built() {
346 # 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
347 get_version; 567 get_version
348 568
349 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 569 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
350 then 570 then
351 eerror "These sources have not yet been prepared." 571 eerror "These sources have not yet been prepared."
352 eerror "We cannot build against an unprepared tree." 572 eerror "We cannot build against an unprepared tree."
359 eerror "Then please try merging this module again." 579 eerror "Then please try merging this module again."
360 die "Kernel sources need compiling first" 580 die "Kernel sources need compiling first"
361 fi 581 fi
362} 582}
363 583
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.
364check_modules_supported() { 587check_modules_supported() {
365 # 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
366 get_version; 590 get_version
367 591
368 if ! linux_chkconfig_builtin "MODULES" 592 if ! linux_chkconfig_builtin "MODULES"
369 then 593 then
370 eerror "These sources do not support loading external modules." 594 eerror "These sources do not support loading external modules."
371 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\""
372 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."
373 die "No support for external modules in ${KV_FULL} config" 597 die "No support for external modules in ${KV_FULL} config"
374 fi 598 fi
375} 599}
376 600
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.
377check_extra_config() { 605check_extra_config() {
378 local config negate error local_error i n
379 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
380 608
381 # if we haven't determined the version yet, we need too. 609 # if we haven't determined the version yet, we need to
382 get_version; 610 get_version
383 611
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:"
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
384 einfo "Checking for suitable kernel configuration options:" 639 einfo "Checking for suitable kernel configuration options..."
640
385 for config in ${CONFIG_CHECK} 641 for config in ${CONFIG_CHECK}
386 do 642 do
387 # if we specify any fatal, ensure we honor them 643 # if we specify any fatal, ensure we honor them
388 die=1 644 die=1
389 error=0 645 error=0
390 negate=0 646 negate=0
391 reworkmodulenames=0 647 reworkmodulenames=0
392 648
393 if [[ -z ${config//\!*} ]]; then 649 if [[ ${config:0:1} == "~" ]]; then
394 negate=1 650 die=0
395 config=${config:1} 651 config=${config:1}
396 fi 652 elif [[ ${config:0:1} == "@" ]]; then
397 if [[ -z ${config/\@*} ]]; then
398 die=2 653 die=0
399 reworkmodulenames=1 654 reworkmodulenames=1
400 config=${config:1} 655 config=${config:1}
401 fi 656 fi
402 if [[ -z ${config/\~*} ]]; then 657 if [[ ${config:0:1} == "!" ]]; then
403 die=0 658 negate=1
404 config=${config:1} 659 config=${config:1}
405 fi 660 fi
406 661
407 if [[ ${negate} == 1 ]]; then 662 if [[ ${negate} == 1 ]]; then
408 linux_chkconfig_present ${config} && error=2 663 linux_chkconfig_present ${config} && error=2
409 elif [[ ${reworkmodulenames} == 1 ]]; then 664 elif [[ ${reworkmodulenames} == 1 ]]; then
410 temp_config="${config//*:}" 665 local temp_config="${config//*:}" i n
411 config="${config//:*}" 666 config="${config//:*}"
412 if linux_chkconfig_present ${config}; then 667 if linux_chkconfig_present ${config}; then
413 for i in ${MODULE_NAMES}; do 668 for i in ${MODULE_NAMES}; do
414 n="${i//${temp_config}}" 669 n="${i//${temp_config}}"
415 [[ -z ${n//(*} ]] && \ 670 [[ -z ${n//\(*} ]] && \
416 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}" 671 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
417 done 672 done
418 error=2 673 error=2
419 fi 674 fi
420 else 675 else
421 linux_chkconfig_present ${config} || error=1 676 linux_chkconfig_present ${config} || error=1
422 fi 677 fi
423 678
424 if [[ ${die} == 0 ]]; then
425 ebegin "CONFIG_${config}"
426 eend ${error}
427 else
428 if [[ ${error} > 0 ]]; then 679 if [[ ${error} > 0 ]]; then
680 local report_func="eerror" local_error
429 local_error="ERROR_${config}" 681 local_error="ERROR_${config}"
682 local_error="${!local_error}"
683
684 if [[ -z "${local_error}" ]]; then
685 # using old, deprecated format.
686 local_error="${config}_ERROR"
430 local_error="${!local_error}" 687 local_error="${!local_error}"
431 688 fi
432 if [[ -z "${local_error}" ]]; then 689 if [[ ${die} == 0 && -z "${local_error}" ]]; then
433 # using old, deprecated format. 690 #soft errors can be warnings
434 local_error="${config}_ERROR" 691 local_error="WARNING_${config}"
435 local_error="${!local_error}" 692 local_error="${!local_error}"
693 if [[ -n "${local_error}" ]] ; then
694 report_func="ewarn"
436 fi 695 fi
437
438 if [[ -z "${local_error}" ]]; then
439 [[ ${error} == 1 ]] \
440 && local_error="is not set when it should be." \
441 || local_error="should not be set. But it is."
442 local_error="CONFIG_${config}:\t ${local_error}"
443 fi
444 eerror " ${local_error}"
445 fi 696 fi
697
698 if [[ -z "${local_error}" ]]; then
699 [[ ${error} == 1 ]] \
700 && local_error="is not set when it should be." \
701 || local_error="should not be set. But it is."
702 local_error="CONFIG_${config}:\t ${local_error}"
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
446 fi 711 fi
447 done 712 done
448 713
449 if [[ ${error} > 0 ]]; then 714 if [[ ${hard_errors_count} > 0 ]]; then
450 eerror "Please check to make sure these options are set correctly." 715 eerror "Please check to make sure these options are set correctly."
451 eerror "Failure to do so may cause unexpected problems." 716 eerror "Failure to do so may cause unexpected problems."
452 if [[ ${die} == 1 ]]; then
453 eerror "Once you have satisfied these options, please try merging" 717 eerror "Once you have satisfied these options, please try merging"
454 eerror "this package again." 718 eerror "this package again."
455 die "Incorrect kernel configuration options" 719 die "Incorrect kernel configuration options"
456 fi 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
457 fi 725 fi
458} 726}
459 727
460check_zlibinflate() { 728check_zlibinflate() {
461 # 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
462 get_version; 731 get_version
463 732
464 # 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!
465 734
466 # bug #27882 - zlib routines are only linked into the kernel 735 # bug #27882 - zlib routines are only linked into the kernel
467 # if something compiled into the kernel calls them 736 # if something compiled into the kernel calls them
474 local DEFLATE 743 local DEFLATE
475 744
476 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 745 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
477 746
478 ebegin "checking ZLIB_INFLATE" 747 ebegin "checking ZLIB_INFLATE"
479 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 748 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
480 eend $? 749 eend $?
481 [ "$?" != 0 ] && die 750 [ "$?" != 0 ] && die
482 751
483 ebegin "checking ZLIB_DEFLATE" 752 ebegin "checking ZLIB_DEFLATE"
484 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 753 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
485 eend $? 754 eend $?
486 [ "$?" != 0 ] && die 755 [ "$?" != 0 ] && die
487 756
488 local LINENO_START 757 local LINENO_START
489 local LINENO_END 758 local LINENO_END
527} 796}
528 797
529################################ 798################################
530# Default pkg_setup 799# Default pkg_setup
531# 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
532 801# @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)
533linux-info_pkg_setup() { 805linux-info_pkg_setup() {
534 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
535 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 828 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
536} 829}

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