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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 1.71 2009/09/08 12:34:21 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=""
114RDEPEND=""
115
116[ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && \
117DEPEND="kernel_linux? ( virtual/linux-sources )"
56 118
57# Overwritable environment Var's 119# Overwritable environment Var's
58# --------------------------------------- 120# ---------------------------------------
59KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 121KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
60 122
64case ${ARCH} in 126case ${ARCH} in
65 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 127 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
66 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 128 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
67esac 129esac
68 130
69# These are legacy wrappers for toolchain-funcs. 131# @FUNCTION: set_arch_to_kernel
70# I dont like them here, but oh well. 132# @DESCRIPTION:
133# Set the env ARCH to match what the kernel expects.
71set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 134set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
135# @FUNCTION: set_arch_to_portage
136# @DESCRIPTION:
137# Set the env ARCH to match what portage expects.
72set_arch_to_portage() { export ARCH="$(tc-arch)"; } 138set_arch_to_portage() { export ARCH=$(tc-arch); }
73 139
74# qeinfo "Message" 140# qeinfo "Message"
75# ------------------- 141# -------------------
76# qeinfo is a quiet einfo call when EBUILD_PHASE 142# qeinfo is a quiet einfo call when EBUILD_PHASE
77# should not have visible output. 143# should not have visible output.
92qeerror() { qout eerror "${@}" ; } 158qeerror() { qout eerror "${@}" ; }
93 159
94# File Functions 160# File Functions
95# --------------------------------------- 161# ---------------------------------------
96 162
97# getfilevar accepts 2 vars as follows: 163# @FUNCTION: getfilevar
98# getfilevar <VARIABLE> <CONFIGFILE> 164# @USAGE: variable configfile
99 165# @RETURN: the value of the variable
166# @DESCRIPTION:
167# It detects the value of the variable defined in the file configfile. This is
168# done by including the configfile, and printing the variable with Make.
169# It WILL break if your makefile has missing dependencies!
100getfilevar() { 170getfilevar() {
101local ERROR workingdir basefname basedname myARCH="${ARCH}" 171local ERROR basefname basedname myARCH="${ARCH}"
102 ERROR=0 172 ERROR=0
103 173
104 [ -z "${1}" ] && ERROR=1 174 [ -z "${1}" ] && ERROR=1
105 [ ! -f "${2}" ] && ERROR=1 175 [ ! -f "${2}" ] && ERROR=1
106 176
108 then 178 then
109 echo -e "\n" 179 echo -e "\n"
110 eerror "getfilevar requires 2 variables, with the second a valid file." 180 eerror "getfilevar requires 2 variables, with the second a valid file."
111 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 181 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
112 else 182 else
113 workingdir="${PWD}"
114 basefname="$(basename ${2})" 183 basefname="$(basename ${2})"
115 basedname="$(dirname ${2})" 184 basedname="$(dirname ${2})"
116 unset ARCH 185 unset ARCH
117 186
118 cd "${basedname}" 187 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
119 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ 188 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}"
122 189
123 ARCH=${myARCH} 190 ARCH=${myARCH}
124 fi 191 fi
125} 192}
126 193
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 ${KV_OUT_DIR}"
265 fi
266}
267
268# @FUNCTION: linux_chkconfig_present
269# @USAGE: option
270# @RETURN: true or false
271# @DESCRIPTION:
272# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
273# If linux_config_exists returns false, the results of this are UNDEFINED. You
274# MUST call linux_config_exists first.
127linux_chkconfig_present() { 275linux_chkconfig_present() {
128local RESULT 276local RESULT
277 [ -z "${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"
129 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 281 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
130 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 282 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
131} 283}
132 284
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.
133linux_chkconfig_module() { 292linux_chkconfig_module() {
134local 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 "${config}" ] && config="/proc/config.gz"
135 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 298 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
136 [ "${RESULT}" = "m" ] && return 0 || return 1 299 [ "${RESULT}" = "m" ] && return 0 || return 1
137} 300}
138 301
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.
139linux_chkconfig_builtin() { 309linux_chkconfig_builtin() {
140local 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 "${config}" ] && config="/proc/config.gz"
141 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 315 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
142 [ "${RESULT}" = "y" ] && return 0 || return 1 316 [ "${RESULT}" = "y" ] && return 0 || return 1
143} 317}
144 318
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.
145linux_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 "${config}" ] && config="/proc/config.gz"
146 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 331 getfilevar_noexec "CONFIG_${1}" "${config}"
147} 332}
148 333
149# Versioning Functions 334# Versioning Functions
150# --------------------------------------- 335# ---------------------------------------
151 336
152# 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.
153# 343#
344# @CODE
154# For Example where KV = 2.6.9 345# For Example where KV = 2.6.9
155# kernel_is 2 4 returns false 346# kernel_is 2 4 returns false
156# kernel_is 2 returns true 347# kernel_is 2 returns true
157# kernel_is 2 6 returns true 348# kernel_is 2 6 returns true
158# kernel_is 2 6 8 returns false 349# kernel_is 2 6 8 returns false
159# kernel_is 2 6 9 returns true 350# kernel_is 2 6 9 returns true
160# 351# @CODE
352
161# got the jist yet? 353# got the jist yet?
162 354
163kernel_is() { 355kernel_is() {
164 # if we haven't determined the version yet, we need too. 356 # if we haven't determined the version yet, we need to.
165 get_version; 357 linux-info_get_any_version
358
166 local operator test value x=0 y=0 z=0 359 local operator test value x=0 y=0 z=0
167 360
168 case ${1} in 361 case ${1} in
169 lt) operator="-lt"; shift;; 362 -lt|lt) operator="-lt"; shift;;
170 gt) operator="-gt"; shift;; 363 -gt|gt) operator="-gt"; shift;;
171 le) operator="-le"; shift;; 364 -le|le) operator="-le"; shift;;
172 ge) operator="-ge"; shift;; 365 -ge|ge) operator="-ge"; shift;;
173 eq) operator="-eq"; shift;; 366 -eq|eq) operator="-eq"; shift;;
174 *) operator="-eq";; 367 *) operator="-eq";;
175 esac 368 esac
176 369
177 for x in ${@}; do 370 for x in ${@}; do
178 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done 371 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
179 value="${value}${x}" 372 value="${value}${x}"
187 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 380 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
188 test="${test}${KV_PATCH}";; 381 test="${test}${KV_PATCH}";;
189 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 382 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
190 esac 383 esac
191 done 384 done
192 385
193 [ ${test} ${operator} ${value} ] && return 0 || return 1 386 [ ${test} ${operator} ${value} ] && return 0 || return 1
194} 387}
195 388
196get_localversion() { 389get_localversion() {
197 local lv_list i x 390 local lv_list i x
206 done 399 done
207 x=${x/ /} 400 x=${x/ /}
208 echo ${x} 401 echo ${x}
209} 402}
210 403
404# internal variable, so we know to only print the warning once
405get_version_warning_done=
406
407# @FUNCTION: get_version
408# @DESCRIPTION:
409# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
410# (if KV_FULL is already set it does nothing).
411#
412# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
413#
414# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
415# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
416# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
211get_version() { 417get_version() {
212 local kbuild_output 418 local kbuild_output
213 419
214 # no need to execute this twice assuming KV_FULL is populated. 420 # no need to execute this twice assuming KV_FULL is populated.
215 # we can force by unsetting KV_FULL 421 # we can force by unsetting KV_FULL
218 # if we dont know KV_FULL, then we need too. 424 # if we dont know KV_FULL, then we need too.
219 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 425 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
220 unset KV_DIR 426 unset KV_DIR
221 427
222 # KV_DIR will contain the full path to the sources directory we should use 428 # KV_DIR will contain the full path to the sources directory we should use
429 [ -z "${get_version_warning_done}" ] && \
223 qeinfo "Determining the location of the kernel source code" 430 qeinfo "Determining the location of the kernel source code"
224 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 431 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
225 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 432 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
226 433
227 if [ -z "${KV_DIR}" ] 434 if [ -z "${KV_DIR}" ]
228 then 435 then
436 if [ -z "${get_version_warning_done}" ]; then
437 get_version_warning_done=1
229 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 438 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
230 qeinfo "This package requires Linux sources." 439 #qeinfo "This package requires Linux sources."
231 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 440 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
232 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 441 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
233 qeinfo "(or the kernel you wish to build against)." 442 qeinfo "(or the kernel you wish to build against)."
234 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 443 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
235 else 444 else
236 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 445 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
446 fi
237 fi 447 fi
238 return 1 448 return 1
239 fi 449 fi
240 450
451 if [ -z "${get_version_warning_done}" ]; then
241 qeinfo "Found kernel source directory:" 452 qeinfo "Found kernel source directory:"
242 qeinfo " ${KV_DIR}" 453 qeinfo " ${KV_DIR}"
454 fi
243 455
244 if [ ! -s "${KV_DIR}/Makefile" ] 456 if [ ! -s "${KV_DIR}/Makefile" ]
245 then 457 then
458 if [ -z "${get_version_warning_done}" ]; then
459 get_version_warning_done=1
246 qeerror "Could not find a Makefile in the kernel source directory." 460 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" 461 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
462 fi
248 return 1 463 return 1
249 fi 464 fi
250 465
251 # OK so now we know our sources directory, but they might be using 466 # OK so now we know our sources directory, but they might be using
252 # KBUILD_OUTPUT, and we need this for .config and localversions-* 467 # KBUILD_OUTPUT, and we need this for .config and localversions-*
253 # so we better find it eh? 468 # so we better find it eh?
254 # do we pass KBUILD_OUTPUT on the CLI? 469 # do we pass KBUILD_OUTPUT on the CLI?
255 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 470 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
256 471
257 # And if we didn't pass it, we can take a nosey in the Makefile 472 # And if we didn't pass it, we can take a nosey in the Makefile
258 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 473 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
259 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 474 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
260 475
261 # And contrary to existing functions I feel we shouldn't trust the 476 # And contrary to existing functions I feel we shouldn't trust the
262 # directory name to find version information as this seems insane. 477 # directory name to find version information as this seems insane.
263 # so we parse ${KV_DIR}/Makefile 478 # so we parse ${KV_DIR}/Makefile
264 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 479 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
265 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 480 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
266 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 481 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
267 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 482 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
268 483
269 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 484 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
270 then 485 then
486 if [ -z "${get_version_warning_done}" ]; then
487 get_version_warning_done=1
271 qeerror "Could not detect kernel version." 488 qeerror "Could not detect kernel version."
272 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 489 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
490 fi
273 return 1 491 return 1
274 fi 492 fi
275 493
276 # and in newer versions we can also pull LOCALVERSION if it is set. 494 # and in newer versions we can also pull LOCALVERSION if it is set.
277 # but before we do this, we need to find if we use a different object directory. 495 # but before we do this, we need to find if we use a different object directory.
278 # This *WILL* break if the user is using localversions, but we assume it was 496 # This *WILL* break if the user is using localversions, but we assume it was
279 # caught before this if they are. 497 # caught before this if they are.
280 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 498 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
281 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" 499 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
282 500
283 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 501 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
284 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 502 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
285 if [ -n "${KV_OUT_DIR}" ]; 503 if [ -n "${KV_OUT_DIR}" ];
286 then 504 then
287 qeinfo "Found kernel object directory:" 505 qeinfo "Found kernel object directory:"
288 qeinfo " ${KV_OUT_DIR}" 506 qeinfo " ${KV_OUT_DIR}"
289 507
290 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})" 508 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
291 fi 509 fi
292 # and if we STILL haven't got it, then we better just set it to KV_DIR 510 # and if we STILL have not got it, then we better just set it to KV_DIR
293 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 511 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
294 512
295 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 513 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
514 if linux_config_src_exists; then
296 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 515 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
297 KV_LOCAL="${KV_LOCAL//\"/}" 516 KV_LOCAL="${KV_LOCAL//\"/}"
517
518 # For things like git that can append extra stuff:
519 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
520 linux_chkconfig_builtin LOCALVERSION_AUTO &&
521 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
522 fi
298 523
299 # And we should set KV_FULL to the full expanded version 524 # And we should set KV_FULL to the full expanded version
300 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 525 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
301 526
302 qeinfo "Found sources for kernel version:" 527 qeinfo "Found sources for kernel version:"
303 qeinfo " ${KV_FULL}" 528 qeinfo " ${KV_FULL}"
304 529
305 if [ ! -s "${KV_OUT_DIR}/.config" ]
306 then
307 qeerror "Could not find a usable .config in the kernel source directory."
308 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
309 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
310 qeerror "it points to the necessary object directory so that it might find .config."
311 return 1
312 fi
313
314 return 0 530 return 0
315} 531}
316 532
533# @FUNCTION: get_running_version
534# @DESCRIPTION:
535# It gets the version of the current running kernel and the result is the same as get_version() if the
536# function can find the sources.
317get_running_version() { 537get_running_version() {
318 KV_FULL=$(uname -r) 538 KV_FULL=$(uname -r)
319 539
320 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 540 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
321 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 541 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
336 && KV_EXTRA="-${KV_FULL#*-}" 556 && KV_EXTRA="-${KV_FULL#*-}"
337 fi 557 fi
338 return 0 558 return 0
339} 559}
340 560
561# This next function is named with the eclass prefix to avoid conflicts with
562# some old versionator-like eclass functions.
563
564# @FUNCTION: linux-info_get_any_version
565# @DESCRIPTION:
566# This attempts to find the version of the sources, and otherwise falls back to
567# the version of the running kernel.
568linux-info_get_any_version() {
569 get_version
570 if [[ $? -ne 0 ]]; then
571 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
572 get_running_version
573 fi
574}
575
341 576
342# ebuild check functions 577# ebuild check functions
343# --------------------------------------- 578# ---------------------------------------
344 579
580# @FUNCTION: check_kernel_built
581# @DESCRIPTION:
582# This function verifies that the current kernel sources have been already prepared otherwise it dies.
345check_kernel_built() { 583check_kernel_built() {
346 # if we haven't determined the version yet, we need too. 584 # if we haven't determined the version yet, we need to
585 require_configured_kernel
347 get_version; 586 get_version
348 587
349 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 588 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
350 then 589 then
351 eerror "These sources have not yet been prepared." 590 eerror "These sources have not yet been prepared."
352 eerror "We cannot build against an unprepared tree." 591 eerror "We cannot build against an unprepared tree."
359 eerror "Then please try merging this module again." 598 eerror "Then please try merging this module again."
360 die "Kernel sources need compiling first" 599 die "Kernel sources need compiling first"
361 fi 600 fi
362} 601}
363 602
603# @FUNCTION: check_modules_supported
604# @DESCRIPTION:
605# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
364check_modules_supported() { 606check_modules_supported() {
365 # if we haven't determined the version yet, we need too. 607 # if we haven't determined the version yet, we need too.
608 require_configured_kernel
366 get_version; 609 get_version
367 610
368 if ! linux_chkconfig_builtin "MODULES" 611 if ! linux_chkconfig_builtin "MODULES"
369 then 612 then
370 eerror "These sources do not support loading external modules." 613 eerror "These sources do not support loading external modules."
371 eerror "to be able to use this module please enable \"Loadable modules support\"" 614 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." 615 eerror "in your kernel, recompile and then try merging this module again."
373 die "No support for external modules in ${KV_FULL} config" 616 die "No support for external modules in ${KV_FULL} config"
374 fi 617 fi
375} 618}
376 619
620# @FUNCTION: check_extra_config
621# @DESCRIPTION:
622# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
623# the prefix ~ is not used) doesn't satisfy the directive.
377check_extra_config() { 624check_extra_config() {
378 local config negate error local_error i n
379 local temp_config die reworkmodulenames 625 local config negate die error reworkmodulenames
626 local soft_errors_count=0 hard_errors_count=0 config_required=0
380 627
381 # if we haven't determined the version yet, we need too. 628 # if we haven't determined the version yet, we need to
382 get_version; 629 linux-info_get_any_version
383 630
631 # Determine if we really need a .config. The only time when we don't need
632 # one is when all of the CONFIG_CHECK options are prefixed with "~".
633 for config in ${CONFIG_CHECK}
634 do
635 if [[ "${config:0:1}" != "~" ]]; then
636 config_required=1
637 break
638 fi
639 done
640
641 if [[ ${config_required} == 0 ]]; then
642 # In the case where we don't require a .config, we can now bail out
643 # if the user has no .config as there is nothing to do. Otherwise
644 # code later will cause a failure due to missing .config.
645 if ! linux_config_exists; then
646 ewarn "Unable to check for the following kernel config options due"
647 ewarn "to absence of any configured kernel sources or compiled"
648 ewarn "config:"
649 for config in ${CONFIG_CHECK}; do
650 ewarn " - ${config#\~}"
651 done
652 ewarn "You're on your own to make sure they are set if needed."
653 return 0
654 fi
655 else
656 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
657 fi
658
384 einfo "Checking for suitable kernel configuration options:" 659 einfo "Checking for suitable kernel configuration options..."
660
385 for config in ${CONFIG_CHECK} 661 for config in ${CONFIG_CHECK}
386 do 662 do
387 # if we specify any fatal, ensure we honor them 663 # if we specify any fatal, ensure we honor them
388 die=1 664 die=1
389 error=0 665 error=0
390 negate=0 666 negate=0
391 reworkmodulenames=0 667 reworkmodulenames=0
392 668
393 if [[ -z ${config//\!*} ]]; then 669 if [[ ${config:0:1} == "~" ]]; then
394 negate=1 670 die=0
395 config=${config:1} 671 config=${config:1}
396 fi 672 elif [[ ${config:0:1} == "@" ]]; then
397 if [[ -z ${config/\@*} ]]; then
398 die=2 673 die=0
399 reworkmodulenames=1 674 reworkmodulenames=1
400 config=${config:1} 675 config=${config:1}
401 fi 676 fi
402 if [[ -z ${config/\~*} ]]; then 677 if [[ ${config:0:1} == "!" ]]; then
403 die=0 678 negate=1
404 config=${config:1} 679 config=${config:1}
405 fi 680 fi
406 681
407 if [[ ${negate} == 1 ]]; then 682 if [[ ${negate} == 1 ]]; then
408 linux_chkconfig_present ${config} && error=2 683 linux_chkconfig_present ${config} && error=2
409 elif [[ ${reworkmodulenames} == 1 ]]; then 684 elif [[ ${reworkmodulenames} == 1 ]]; then
410 temp_config="${config//*:}" 685 local temp_config="${config//*:}" i n
411 config="${config//:*}" 686 config="${config//:*}"
412 if linux_chkconfig_present ${config}; then 687 if linux_chkconfig_present ${config}; then
413 for i in ${MODULE_NAMES}; do 688 for i in ${MODULE_NAMES}; do
414 n="${i//${temp_config}}" 689 n="${i//${temp_config}}"
415 [[ -z ${n//(*} ]] && \ 690 [[ -z ${n//\(*} ]] && \
416 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}" 691 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
417 done 692 done
418 error=2 693 error=2
419 fi 694 fi
420 else 695 else
421 linux_chkconfig_present ${config} || error=1 696 linux_chkconfig_present ${config} || error=1
422 fi 697 fi
423 698
424 if [[ ${die} == 0 ]]; then
425 ebegin "CONFIG_${config}"
426 eend ${error}
427 else
428 if [[ ${error} > 0 ]]; then 699 if [[ ${error} > 0 ]]; then
700 local report_func="eerror" local_error
429 local_error="ERROR_${config}" 701 local_error="ERROR_${config}"
702 local_error="${!local_error}"
703
704 if [[ -z "${local_error}" ]]; then
705 # using old, deprecated format.
706 local_error="${config}_ERROR"
430 local_error="${!local_error}" 707 local_error="${!local_error}"
431 708 fi
432 if [[ -z "${local_error}" ]]; then 709 if [[ ${die} == 0 && -z "${local_error}" ]]; then
433 # using old, deprecated format. 710 #soft errors can be warnings
434 local_error="${config}_ERROR" 711 local_error="WARNING_${config}"
435 local_error="${!local_error}" 712 local_error="${!local_error}"
713 if [[ -n "${local_error}" ]] ; then
714 report_func="ewarn"
436 fi 715 fi
437
438 if [[ -z "${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 " ${local_error}"
445 fi 716 fi
717
718 if [[ -z "${local_error}" ]]; then
719 [[ ${error} == 1 ]] \
720 && local_error="is not set when it should be." \
721 || local_error="should not be set. But it is."
722 local_error="CONFIG_${config}:\t ${local_error}"
723 fi
724 if [[ ${die} == 0 ]]; then
725 ${report_func} " ${local_error}"
726 soft_errors_count=$[soft_errors_count + 1]
727 else
728 ${report_func} " ${local_error}"
729 hard_errors_count=$[hard_errors_count + 1]
730 fi
446 fi 731 fi
447 done 732 done
448 733
449 if [[ ${error} > 0 ]]; then 734 if [[ ${hard_errors_count} > 0 ]]; then
450 eerror "Please check to make sure these options are set correctly." 735 eerror "Please check to make sure these options are set correctly."
451 eerror "Failure to do so may cause unexpected problems." 736 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" 737 eerror "Once you have satisfied these options, please try merging"
454 eerror "this package again." 738 eerror "this package again."
455 die "Incorrect kernel configuration options" 739 die "Incorrect kernel configuration options"
456 fi 740 elif [[ ${soft_errors_count} > 0 ]]; then
741 ewarn "Please check to make sure these options are set correctly."
742 ewarn "Failure to do so may cause unexpected problems."
743 else
744 eend 0
457 fi 745 fi
458} 746}
459 747
460check_zlibinflate() { 748check_zlibinflate() {
461 # if we haven't determined the version yet, we need too. 749 # if we haven't determined the version yet, we need to
750 require_configured_kernel
462 get_version; 751 get_version
463 752
464 # although I restructured this code - I really really really dont support it! 753 # although I restructured this code - I really really really dont support it!
465 754
466 # bug #27882 - zlib routines are only linked into the kernel 755 # bug #27882 - zlib routines are only linked into the kernel
467 # if something compiled into the kernel calls them 756 # if something compiled into the kernel calls them
474 local DEFLATE 763 local DEFLATE
475 764
476 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 765 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
477 766
478 ebegin "checking ZLIB_INFLATE" 767 ebegin "checking ZLIB_INFLATE"
479 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 768 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
480 eend $? 769 eend $?
481 [ "$?" != 0 ] && die 770 [ "$?" != 0 ] && die
482 771
483 ebegin "checking ZLIB_DEFLATE" 772 ebegin "checking ZLIB_DEFLATE"
484 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 773 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
485 eend $? 774 eend $?
486 [ "$?" != 0 ] && die 775 [ "$?" != 0 ] && die
487 776
488 local LINENO_START 777 local LINENO_START
489 local LINENO_END 778 local LINENO_END
527} 816}
528 817
529################################ 818################################
530# Default pkg_setup 819# Default pkg_setup
531# Also used when inheriting linux-mod to force a get_version call 820# Also used when inheriting linux-mod to force a get_version call
532 821# @FUNCTION: linux-info_pkg_setup
822# @DESCRIPTION:
823# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
824# to support the options specified in CONFIG_CHECK (if not null)
533linux-info_pkg_setup() { 825linux-info_pkg_setup() {
534 get_version || die "Unable to calculate Linux Kernel version" 826 linux-info_get_any_version
827
828 if kernel_is 2 4; then
829 if [ "$( gcc-major-version )" -eq "4" ] ; then
830 echo
831 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
832 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
833 echo
834 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
835 ewarn "newer kernel that supports gcc-4."
836 echo
837 ewarn "Also be aware that bugreports about gcc-4 not working"
838 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
839 echo
840 epause 10
841 fi
842 fi
843
535 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 844 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
536} 845}

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