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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 1.66 2009/09/06 23:24:49 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
56 112
113DEPEND=""
114RDEPEND=""
115
116[ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && \
57DEPEND="kernel_linux? ( virtual/linux-sources )" 117DEPEND="kernel_linux? ( virtual/linux-sources )"
58RDEPEND=""
59 118
60# Overwritable environment Var's 119# Overwritable environment Var's
61# --------------------------------------- 120# ---------------------------------------
62KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 121KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
63 122
67case ${ARCH} in 126case ${ARCH} in
68 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 127 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
69 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 128 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
70esac 129esac
71 130
72# These are legacy wrappers for toolchain-funcs. 131# @FUNCTION: set_arch_to_kernel
73# I dont like them here, but oh well. 132# @DESCRIPTION:
133# Set the env ARCH to match what the kernel expects.
74set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 134set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
135# @FUNCTION: set_arch_to_portage
136# @DESCRIPTION:
137# Set the env ARCH to match what portage expects.
75set_arch_to_portage() { export ARCH="$(tc-arch)"; } 138set_arch_to_portage() { export ARCH=$(tc-arch); }
76 139
77# qeinfo "Message" 140# qeinfo "Message"
78# ------------------- 141# -------------------
79# qeinfo is a quiet einfo call when EBUILD_PHASE 142# qeinfo is a quiet einfo call when EBUILD_PHASE
80# should not have visible output. 143# should not have visible output.
95qeerror() { qout eerror "${@}" ; } 158qeerror() { qout eerror "${@}" ; }
96 159
97# File Functions 160# File Functions
98# --------------------------------------- 161# ---------------------------------------
99 162
100# getfilevar accepts 2 vars as follows: 163# @FUNCTION: getfilevar
101# getfilevar <VARIABLE> <CONFIGFILE> 164# @USAGE: variable configfile
102 165# @RETURN: the value of the variable
166# @DESCRIPTION:
167# It detects the value of the variable defined in the file configfile. This is
168# done by including the configfile, and printing the variable with Make.
169# It WILL break if your makefile has missing dependencies!
103getfilevar() { 170getfilevar() {
104local ERROR workingdir basefname basedname myARCH="${ARCH}" 171local ERROR basefname basedname myARCH="${ARCH}"
105 ERROR=0 172 ERROR=0
106 173
107 [ -z "${1}" ] && ERROR=1 174 [ -z "${1}" ] && ERROR=1
108 [ ! -f "${2}" ] && ERROR=1 175 [ ! -f "${2}" ] && ERROR=1
109 176
111 then 178 then
112 echo -e "\n" 179 echo -e "\n"
113 eerror "getfilevar requires 2 variables, with the second a valid file." 180 eerror "getfilevar requires 2 variables, with the second a valid file."
114 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 181 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
115 else 182 else
116 workingdir="${PWD}"
117 basefname="$(basename ${2})" 183 basefname="$(basename ${2})"
118 basedname="$(dirname ${2})" 184 basedname="$(dirname ${2})"
119 unset ARCH 185 unset ARCH
120 186
121 cd "${basedname}" 187 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
122 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ 188 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}"
125 189
126 ARCH=${myARCH} 190 ARCH=${myARCH}
127 fi 191 fi
128} 192}
129 193
194# @FUNCTION: getfilevar_noexec
195# @USAGE: variable configfile
196# @RETURN: the value of the variable
197# @DESCRIPTION:
198# It detects the value of the variable defined in the file configfile.
199# This is done with sed matching an expression only. If the variable is defined,
200# you will run into problems. See getfilevar for those cases.
201getfilevar_noexec() {
202 local ERROR basefname basedname mycat myARCH="${ARCH}"
203 ERROR=0
204 mycat='cat'
205
206 [ -z "${1}" ] && ERROR=1
207 [ ! -f "${2}" ] && ERROR=1
208 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
209
210 if [ "${ERROR}" = 1 ]
211 then
212 echo -e "\n"
213 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
214 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
215 else
216 ${mycat} "${2}" | \
217 sed -n \
218 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
219 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
220 s,[[:space:]]*\$,,g ;
221 p
222 }"
223 fi
224}
225
226
227# @FUNCTION: linux_config_src_exists
228# @RETURN: true or false
229# @DESCRIPTION:
230# It returns true if .config exists in a build directory otherwise false
231linux_config_src_exists() {
232 [ -s "${KV_OUT_DIR}/.config" ]
233}
234
235# @FUNCTION: linux_config_bin_exists
236# @RETURN: true or false
237# @DESCRIPTION:
238# It returns true if .config exists in /proc, otherwise false
239linux_config_bin_exists() {
240 [ -s "/proc/config.gz" ]
241}
242
243# @FUNCTION: linux_config_exists
244# @RETURN: true or false
245# @DESCRIPTION:
246# It returns true if .config exists otherwise false
247#
248# This function MUST be checked before using any of the linux_chkconfig_*
249# functions.
250linux_config_exists() {
251 linux_config_src_exists || linux_config_bin_exists
252}
253
254# @FUNCTION: require_configured_kernel
255# @DESCRIPTION:
256# This function verifies that the current kernel is configured (it checks against the existence of .config)
257# otherwise it dies.
258require_configured_kernel() {
259 if ! linux_config_src_exists; then
260 qeerror "Could not find a usable .config in the kernel source directory."
261 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
262 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
263 qeerror "it points to the necessary object directory so that it might find .config."
264 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
265 fi
266}
267
268# @FUNCTION: linux_chkconfig_present
269# @USAGE: option
270# @RETURN: true or false
271# @DESCRIPTION:
272# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
273# If linux_config_exists returns false, the results of this are UNDEFINED. You
274# MUST call linux_config_exists first.
130linux_chkconfig_present() { 275linux_chkconfig_present() {
131local RESULT 276local RESULT
277 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
278 local config
279 config="${KV_OUT_DIR}/.config"
280 [ ! -f "${config}" ] && config="/proc/config.gz"
132 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 281 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
133 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 282 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
134} 283}
135 284
285# @FUNCTION: linux_chkconfig_module
286# @USAGE: option
287# @RETURN: true or false
288# @DESCRIPTION:
289# It checks that CONFIG_<option>=m is present in the current kernel .config
290# If linux_config_exists returns false, the results of this are UNDEFINED. You
291# MUST call linux_config_exists first.
136linux_chkconfig_module() { 292linux_chkconfig_module() {
137local RESULT 293local RESULT
294 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
295 local config
296 config="${KV_OUT_DIR}/.config"
297 [ ! -f "${config}" ] && config="/proc/config.gz"
138 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 298 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
139 [ "${RESULT}" = "m" ] && return 0 || return 1 299 [ "${RESULT}" = "m" ] && return 0 || return 1
140} 300}
141 301
302# @FUNCTION: linux_chkconfig_builtin
303# @USAGE: option
304# @RETURN: true or false
305# @DESCRIPTION:
306# It checks that CONFIG_<option>=y is present in the current kernel .config
307# If linux_config_exists returns false, the results of this are UNDEFINED. You
308# MUST call linux_config_exists first.
142linux_chkconfig_builtin() { 309linux_chkconfig_builtin() {
143local RESULT 310local RESULT
311 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
312 local config
313 config="${KV_OUT_DIR}/.config"
314 [ ! -f "${config}" ] && config="/proc/config.gz"
144 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 315 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
145 [ "${RESULT}" = "y" ] && return 0 || return 1 316 [ "${RESULT}" = "y" ] && return 0 || return 1
146} 317}
147 318
319# @FUNCTION: linux_chkconfig_string
320# @USAGE: option
321# @RETURN: CONFIG_<option>
322# @DESCRIPTION:
323# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
324# If linux_config_exists returns false, the results of this are UNDEFINED. You
325# MUST call linux_config_exists first.
148linux_chkconfig_string() { 326linux_chkconfig_string() {
327 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
328 local config
329 config="${KV_OUT_DIR}/.config"
330 [ ! -f "${config}" ] && config="/proc/config.gz"
149 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 331 getfilevar_noexec "CONFIG_${1}" "${config}"
150} 332}
151 333
152# Versioning Functions 334# Versioning Functions
153# --------------------------------------- 335# ---------------------------------------
154 336
155# kernel_is returns true when the version is the same as the passed version 337# @FUNCTION: kernel_is
338# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
339# @RETURN: true or false
340# @DESCRIPTION:
341# It returns true when the current kernel version satisfies the comparison against the passed version.
342# -eq is the default comparison.
156# 343#
344# @CODE
157# For Example where KV = 2.6.9 345# For Example where KV = 2.6.9
158# kernel_is 2 4 returns false 346# kernel_is 2 4 returns false
159# kernel_is 2 returns true 347# kernel_is 2 returns true
160# kernel_is 2 6 returns true 348# kernel_is 2 6 returns true
161# kernel_is 2 6 8 returns false 349# kernel_is 2 6 8 returns false
162# kernel_is 2 6 9 returns true 350# kernel_is 2 6 9 returns true
163# 351# @CODE
352
164# got the jist yet? 353# got the jist yet?
165 354
166kernel_is() { 355kernel_is() {
167 # if we haven't determined the version yet, we need too. 356 # if we haven't determined the version yet, we need to.
168 get_version; 357 get_version
169 local operator test value x=0 y=0 z=0 358 local operator test value x=0 y=0 z=0
170 359
171 case ${1} in 360 case ${1} in
172 lt) operator="-lt"; shift;; 361 lt) operator="-lt"; shift;;
173 gt) operator="-gt"; shift;; 362 gt) operator="-gt"; shift;;
190 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 379 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
191 test="${test}${KV_PATCH}";; 380 test="${test}${KV_PATCH}";;
192 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 381 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
193 esac 382 esac
194 done 383 done
195 384
196 [ ${test} ${operator} ${value} ] && return 0 || return 1 385 [ ${test} ${operator} ${value} ] && return 0 || return 1
197} 386}
198 387
199get_localversion() { 388get_localversion() {
200 local lv_list i x 389 local lv_list i x
209 done 398 done
210 x=${x/ /} 399 x=${x/ /}
211 echo ${x} 400 echo ${x}
212} 401}
213 402
403# internal variable, so we know to only print the warning once
404get_version_warning_done=
405
406# @FUNCTION: get_version
407# @DESCRIPTION:
408# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
409# (if KV_FULL is already set it does nothing).
410#
411# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
412#
413# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
414# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
415# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
214get_version() { 416get_version() {
215 local kbuild_output 417 local kbuild_output
216 418
217 # no need to execute this twice assuming KV_FULL is populated. 419 # no need to execute this twice assuming KV_FULL is populated.
218 # we can force by unsetting KV_FULL 420 # we can force by unsetting KV_FULL
221 # if we dont know KV_FULL, then we need too. 423 # if we dont know KV_FULL, then we need too.
222 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 424 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
223 unset KV_DIR 425 unset KV_DIR
224 426
225 # KV_DIR will contain the full path to the sources directory we should use 427 # KV_DIR will contain the full path to the sources directory we should use
428 [ -z "${get_version_warning_done}" ] && \
226 qeinfo "Determining the location of the kernel source code" 429 qeinfo "Determining the location of the kernel source code"
227 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 430 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
228 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 431 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
229 432
230 if [ -z "${KV_DIR}" ] 433 if [ -z "${KV_DIR}" ]
231 then 434 then
435 if [ -z "${get_version_warning_done}" ]; then
436 get_version_warning_done=1
232 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 437 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
233 qeinfo "This package requires Linux sources." 438 #qeinfo "This package requires Linux sources."
234 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 439 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
235 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 440 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
236 qeinfo "(or the kernel you wish to build against)." 441 qeinfo "(or the kernel you wish to build against)."
237 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 442 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
238 else 443 else
239 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 444 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
445 fi
240 fi 446 fi
241 return 1 447 return 1
242 fi 448 fi
243 449
450 if [ -z "${get_version_warning_done}" ]; then
244 qeinfo "Found kernel source directory:" 451 qeinfo "Found kernel source directory:"
245 qeinfo " ${KV_DIR}" 452 qeinfo " ${KV_DIR}"
453 fi
246 454
247 if [ ! -s "${KV_DIR}/Makefile" ] 455 if [ ! -s "${KV_DIR}/Makefile" ]
248 then 456 then
457 if [ -z "${get_version_warning_done}" ]; then
458 get_version_warning_done=1
249 qeerror "Could not find a Makefile in the kernel source directory." 459 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" 460 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
461 fi
251 return 1 462 return 1
252 fi 463 fi
253 464
254 # OK so now we know our sources directory, but they might be using 465 # OK so now we know our sources directory, but they might be using
255 # KBUILD_OUTPUT, and we need this for .config and localversions-* 466 # KBUILD_OUTPUT, and we need this for .config and localversions-*
256 # so we better find it eh? 467 # so we better find it eh?
257 # do we pass KBUILD_OUTPUT on the CLI? 468 # do we pass KBUILD_OUTPUT on the CLI?
258 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 469 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
259 470
260 # And if we didn't pass it, we can take a nosey in the Makefile 471 # And if we didn't pass it, we can take a nosey in the Makefile
261 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 472 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
262 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 473 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
263 474
264 # And contrary to existing functions I feel we shouldn't trust the 475 # And contrary to existing functions I feel we shouldn't trust the
265 # directory name to find version information as this seems insane. 476 # directory name to find version information as this seems insane.
266 # so we parse ${KV_DIR}/Makefile 477 # so we parse ${KV_DIR}/Makefile
267 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 478 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
268 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 479 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
269 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 480 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
270 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 481 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
271 482
272 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 483 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
273 then 484 then
485 if [ -z "${get_version_warning_done}" ]; then
486 get_version_warning_done=1
274 qeerror "Could not detect kernel version." 487 qeerror "Could not detect kernel version."
275 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 488 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
489 fi
276 return 1 490 return 1
277 fi 491 fi
278 492
279 # and in newer versions we can also pull LOCALVERSION if it is set. 493 # and in newer versions we can also pull LOCALVERSION if it is set.
280 # but before we do this, we need to find if we use a different object directory. 494 # but before we do this, we need to find if we use a different object directory.
281 # This *WILL* break if the user is using localversions, but we assume it was 495 # This *WILL* break if the user is using localversions, but we assume it was
282 # caught before this if they are. 496 # caught before this if they are.
283 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 497 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
284 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" 498 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
285 499
286 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 500 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
287 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 501 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
288 if [ -n "${KV_OUT_DIR}" ]; 502 if [ -n "${KV_OUT_DIR}" ];
289 then 503 then
290 qeinfo "Found kernel object directory:" 504 qeinfo "Found kernel object directory:"
291 qeinfo " ${KV_OUT_DIR}" 505 qeinfo " ${KV_OUT_DIR}"
292 506
293 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})" 507 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
294 fi 508 fi
295 # and if we STILL haven't got it, then we better just set it to KV_DIR 509 # and if we STILL have not got it, then we better just set it to KV_DIR
296 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 510 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
297 511
298 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 512 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
513 if linux_config_exists; then
299 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 514 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
300 KV_LOCAL="${KV_LOCAL//\"/}" 515 KV_LOCAL="${KV_LOCAL//\"/}"
516
517 # For things like git that can append extra stuff:
518 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
519 linux_chkconfig_builtin LOCALVERSION_AUTO &&
520 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
521 fi
301 522
302 # And we should set KV_FULL to the full expanded version 523 # And we should set KV_FULL to the full expanded version
303 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 524 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
304 525
305 qeinfo "Found sources for kernel version:" 526 qeinfo "Found sources for kernel version:"
306 qeinfo " ${KV_FULL}" 527 qeinfo " ${KV_FULL}"
307 528
308 if [ ! -s "${KV_OUT_DIR}/.config" ]
309 then
310 qeerror "Could not find a usable .config in the kernel source directory."
311 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
312 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
313 qeerror "it points to the necessary object directory so that it might find .config."
314 return 1
315 fi
316
317 return 0 529 return 0
318} 530}
319 531
532# @FUNCTION: get_running_version
533# @DESCRIPTION:
534# It gets the version of the current running kernel and the result is the same as get_version() if the
535# function can find the sources.
320get_running_version() { 536get_running_version() {
321 KV_FULL=$(uname -r) 537 KV_FULL=$(uname -r)
322 538
323 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 539 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
324 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 540 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
339 && KV_EXTRA="-${KV_FULL#*-}" 555 && KV_EXTRA="-${KV_FULL#*-}"
340 fi 556 fi
341 return 0 557 return 0
342} 558}
343 559
560# This next function is named with the eclass prefix to avoid conflicts with
561# some old versionator-like eclass functions.
562
563# @FUNCTION: linux-info_get_any_version
564# @DESCRIPTION:
565# This attempts to find the version of the sources, and otherwise falls back to
566# the version of the running kernel.
567linux-info_get_any_version() {
568 get_version
569 if [[ $rc -ne 0 ]]; then
570 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
571 get_running_version
572 fi
573}
574
344 575
345# ebuild check functions 576# ebuild check functions
346# --------------------------------------- 577# ---------------------------------------
347 578
579# @FUNCTION: check_kernel_built
580# @DESCRIPTION:
581# This function verifies that the current kernel sources have been already prepared otherwise it dies.
348check_kernel_built() { 582check_kernel_built() {
349 # if we haven't determined the version yet, we need too. 583 # if we haven't determined the version yet, we need to
584 require_configured_kernel
350 get_version; 585 get_version
351 586
352 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 587 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
353 then 588 then
354 eerror "These sources have not yet been prepared." 589 eerror "These sources have not yet been prepared."
355 eerror "We cannot build against an unprepared tree." 590 eerror "We cannot build against an unprepared tree."
362 eerror "Then please try merging this module again." 597 eerror "Then please try merging this module again."
363 die "Kernel sources need compiling first" 598 die "Kernel sources need compiling first"
364 fi 599 fi
365} 600}
366 601
602# @FUNCTION: check_modules_supported
603# @DESCRIPTION:
604# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
367check_modules_supported() { 605check_modules_supported() {
368 # if we haven't determined the version yet, we need too. 606 # if we haven't determined the version yet, we need too.
607 require_configured_kernel
369 get_version; 608 get_version
370 609
371 if ! linux_chkconfig_builtin "MODULES" 610 if ! linux_chkconfig_builtin "MODULES"
372 then 611 then
373 eerror "These sources do not support loading external modules." 612 eerror "These sources do not support loading external modules."
374 eerror "to be able to use this module please enable \"Loadable modules support\"" 613 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." 614 eerror "in your kernel, recompile and then try merging this module again."
376 die "No support for external modules in ${KV_FULL} config" 615 die "No support for external modules in ${KV_FULL} config"
377 fi 616 fi
378} 617}
379 618
619# @FUNCTION: check_extra_config
620# @DESCRIPTION:
621# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
622# the prefix ~ is not used) doesn't satisfy the directive.
380check_extra_config() { 623check_extra_config() {
381 local config negate error local_error i n
382 local temp_config die reworkmodulenames 624 local config negate die error reworkmodulenames
625 local soft_errors_count=0 hard_errors_count=0 config_required=0
383 626
384 # if we haven't determined the version yet, we need too. 627 # if we haven't determined the version yet, we need to
385 get_version; 628 get_version
386 629
630 # Determine if we really need a .config. The only time when we don't need
631 # one is when all of the CONFIG_CHECK options are prefixed with "~".
632 for config in ${CONFIG_CHECK}
633 do
634 if [[ "${config:0:1}" != "~" ]]; then
635 config_required=1
636 break
637 fi
638 done
639
640 if [[ ${config_required} == 0 ]]; then
641 # In the case where we don't require a .config, we can now bail out
642 # if the user has no .config as there is nothing to do. Otherwise
643 # code later will cause a failure due to missing .config.
644 if ! linux_config_exists; then
645 ewarn "Unable to check for the following kernel config options due"
646 ewarn "to absence of any configured kernel sources or compiled"
647 ewarn "config:"
648 for config in ${CONFIG_CHECK}; do
649 ewarn " - ${config#\~}"
650 done
651 ewarn "You're on your own to make sure they are set if needed."
652 return 0
653 fi
654 else
655 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
656 fi
657
387 einfo "Checking for suitable kernel configuration options:" 658 einfo "Checking for suitable kernel configuration options..."
659
388 for config in ${CONFIG_CHECK} 660 for config in ${CONFIG_CHECK}
389 do 661 do
390 # if we specify any fatal, ensure we honor them 662 # if we specify any fatal, ensure we honor them
391 die=1 663 die=1
392 error=0 664 error=0
393 negate=0 665 negate=0
394 reworkmodulenames=0 666 reworkmodulenames=0
395 667
396 if [[ -z ${config//\!*} ]]; then 668 if [[ ${config:0:1} == "~" ]]; then
397 negate=1 669 die=0
398 config=${config:1} 670 config=${config:1}
399 fi 671 elif [[ ${config:0:1} == "@" ]]; then
400 if [[ -z ${config/\@*} ]]; then
401 die=2 672 die=0
402 reworkmodulenames=1 673 reworkmodulenames=1
403 config=${config:1} 674 config=${config:1}
404 fi 675 fi
405 if [[ -z ${config/\~*} ]]; then 676 if [[ ${config:0:1} == "!" ]]; then
406 die=0 677 negate=1
407 config=${config:1} 678 config=${config:1}
408 fi 679 fi
409 680
410 if [[ ${negate} == 1 ]]; then 681 if [[ ${negate} == 1 ]]; then
411 linux_chkconfig_present ${config} && error=2 682 linux_chkconfig_present ${config} && error=2
412 elif [[ ${reworkmodulenames} == 1 ]]; then 683 elif [[ ${reworkmodulenames} == 1 ]]; then
413 temp_config="${config//*:}" 684 local temp_config="${config//*:}" i n
414 config="${config//:*}" 685 config="${config//:*}"
415 if linux_chkconfig_present ${config}; then 686 if linux_chkconfig_present ${config}; then
416 for i in ${MODULE_NAMES}; do 687 for i in ${MODULE_NAMES}; do
417 n="${i//${temp_config}}" 688 n="${i//${temp_config}}"
418 [[ -z ${n//\(*} ]] && \ 689 [[ -z ${n//\(*} ]] && \
422 fi 693 fi
423 else 694 else
424 linux_chkconfig_present ${config} || error=1 695 linux_chkconfig_present ${config} || error=1
425 fi 696 fi
426 697
427 if [[ ${die} == 0 ]]; then
428 ebegin "CONFIG_${config}"
429 eend ${error}
430 else
431 if [[ ${error} > 0 ]]; then 698 if [[ ${error} > 0 ]]; then
699 local report_func="eerror" local_error
432 local_error="ERROR_${config}" 700 local_error="ERROR_${config}"
701 local_error="${!local_error}"
702
703 if [[ -z "${local_error}" ]]; then
704 # using old, deprecated format.
705 local_error="${config}_ERROR"
433 local_error="${!local_error}" 706 local_error="${!local_error}"
434 707 fi
435 if [[ -z "${local_error}" ]]; then 708 if [[ ${die} == 0 && -z "${local_error}" ]]; then
436 # using old, deprecated format. 709 #soft errors can be warnings
437 local_error="${config}_ERROR" 710 local_error="WARNING_${config}"
438 local_error="${!local_error}" 711 local_error="${!local_error}"
712 if [[ -n "${local_error}" ]] ; then
713 report_func="ewarn"
439 fi 714 fi
440
441 if [[ -z "${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 " ${local_error}"
448 fi 715 fi
716
717 if [[ -z "${local_error}" ]]; then
718 [[ ${error} == 1 ]] \
719 && local_error="is not set when it should be." \
720 || local_error="should not be set. But it is."
721 local_error="CONFIG_${config}:\t ${local_error}"
722 fi
723 if [[ ${die} == 0 ]]; then
724 ${report_func} " ${local_error}"
725 soft_errors_count=$[soft_errors_count + 1]
726 else
727 ${report_func} " ${local_error}"
728 hard_errors_count=$[hard_errors_count + 1]
729 fi
449 fi 730 fi
450 done 731 done
451 732
452 if [[ ${error} > 0 ]]; then 733 if [[ ${hard_errors_count} > 0 ]]; then
453 eerror "Please check to make sure these options are set correctly." 734 eerror "Please check to make sure these options are set correctly."
454 eerror "Failure to do so may cause unexpected problems." 735 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" 736 eerror "Once you have satisfied these options, please try merging"
457 eerror "this package again." 737 eerror "this package again."
458 die "Incorrect kernel configuration options" 738 die "Incorrect kernel configuration options"
459 fi 739 elif [[ ${soft_errors_count} > 0 ]]; then
740 ewarn "Please check to make sure these options are set correctly."
741 ewarn "Failure to do so may cause unexpected problems."
742 else
743 eend 0
460 fi 744 fi
461} 745}
462 746
463check_zlibinflate() { 747check_zlibinflate() {
464 # if we haven't determined the version yet, we need too. 748 # if we haven't determined the version yet, we need to
749 require_configured_kernel
465 get_version; 750 get_version
466 751
467 # although I restructured this code - I really really really dont support it! 752 # although I restructured this code - I really really really dont support it!
468 753
469 # bug #27882 - zlib routines are only linked into the kernel 754 # bug #27882 - zlib routines are only linked into the kernel
470 # if something compiled into the kernel calls them 755 # if something compiled into the kernel calls them
477 local DEFLATE 762 local DEFLATE
478 763
479 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 764 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
480 765
481 ebegin "checking ZLIB_INFLATE" 766 ebegin "checking ZLIB_INFLATE"
482 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 767 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
483 eend $? 768 eend $?
484 [ "$?" != 0 ] && die 769 [ "$?" != 0 ] && die
485 770
486 ebegin "checking ZLIB_DEFLATE" 771 ebegin "checking ZLIB_DEFLATE"
487 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 772 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
488 eend $? 773 eend $?
489 [ "$?" != 0 ] && die 774 [ "$?" != 0 ] && die
490 775
491 local LINENO_START 776 local LINENO_START
492 local LINENO_END 777 local LINENO_END
530} 815}
531 816
532################################ 817################################
533# Default pkg_setup 818# Default pkg_setup
534# Also used when inheriting linux-mod to force a get_version call 819# Also used when inheriting linux-mod to force a get_version call
535 820# @FUNCTION: linux-info_pkg_setup
821# @DESCRIPTION:
822# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
823# to support the options specified in CONFIG_CHECK (if not null)
536linux-info_pkg_setup() { 824linux-info_pkg_setup() {
537 get_version || die "Unable to calculate Linux Kernel version" 825 linux-info_get_any_version
826
827 if kernel_is 2 4; then
828 if [ "$( gcc-major-version )" -eq "4" ] ; then
829 echo
830 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
831 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
832 echo
833 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
834 ewarn "newer kernel that supports gcc-4."
835 echo
836 ewarn "Also be aware that bugreports about gcc-4 not working"
837 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
838 echo
839 epause 10
840 fi
841 fi
842
538 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 843 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
539} 844}

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