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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2006 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.23 2005/04/08 18:42:23 johnm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.89 2011/08/18 14:58:57 vapier Exp $
4# 4#
5# Description: This eclass is used as a central eclass for accessing kernel
6# related information for sources already installed.
7# It is vital for linux-mod to function correctly, and is split
8# out so that any ebuild behaviour "templates" are abstracted out
9# using additional eclasses.
10#
11# Maintainer: John Mylchreest <johnm@gentoo.org> 5# Original author: John Mylchreest <johnm@gentoo.org>
12# Copyright 2004 Gentoo Linux 6# Maintainer: kernel-misc@gentoo.org
13# 7#
14# Please direct your bugs to the current eclass maintainer :) 8# Please direct your bugs to the current eclass maintainer :)
9
10# @ECLASS: linux-info.eclass
11# @MAINTAINER:
12# kernel-misc@gentoo.org
13# @BLURB: eclass used for accessing kernel related information
14# @DESCRIPTION:
15# This eclass is used as a central eclass for accessing kernel
16# related information for source or binary already installed.
17# It is vital for linux-mod.eclass to function correctly, and is split
18# out so that any ebuild behaviour "templates" are abstracted out
19# using additional eclasses.
20#
21# "kernel config" in this file means:
22# The .config of the currently installed sources is used as the first
23# preference, with a fall-back to bundled config (/proc/config.gz) if available.
15 24
16# A Couple of env vars are available to effect usage of this eclass 25# A Couple of env vars are available to effect usage of this eclass
17# These are as follows: 26# These are as follows:
18# 27
19# Env Var Option Description 28# @ECLASS-VARIABLE: KERNEL_DIR
20# KERNEL_DIR <string> The directory containing kernel the target kernel 29# @DESCRIPTION:
21# sources. 30# A string containing the directory of the target kernel sources. The default value is
31# "/usr/src/linux"
32
33# @ECLASS-VARIABLE: CONFIG_CHECK
34# @DESCRIPTION:
22# CONFIG_CHECK <string> a list of .config options to check for before 35# A string containing a list of .config options to check for before
23# proceeding with the install. ie: CONFIG_CHECK="MTRR" 36# proceeding with the install.
37#
38# e.g.: CONFIG_CHECK="MTRR"
39#
24# You can also check that an option doesn't exist by 40# You can also check that an option doesn't exist by
25# prepending it with an exclamation mark (!). 41# prepending it with an exclamation mark (!).
42#
26# ie: CONFIG_CHECK="!MTRR" 43# e.g.: CONFIG_CHECK="!MTRR"
27# ERROR_CFG <string> The error message to display when the above check 44#
45# To simply warn about a missing option, prepend a '~'.
46# It may be combined with '!'.
47#
48# In general, most checks should be non-fatal. The only time fatal checks should
49# be used is for building kernel modules or cases that a compile will fail
50# without the option.
51#
52# This is to allow usage of binary kernels, and minimal systems without kernel
53# sources.
54
55# @ECLASS-VARIABLE: ERROR_<CFG>
56# @DESCRIPTION:
57# A string containing the error message to display when the check against CONFIG_CHECK
28# fails. <CFG> should reference the appropriate option 58# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
29# as above. ie: MTRR_ERROR="MTRR exists in the .config 59#
30# but shouldn't!!" 60# e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
31# KBUILD_OUTPUT <string> This is passed on commandline, or can be set from 61
32# the kernel makefile. This contains the directory 62# @ECLASS-VARIABLE: KBUILD_OUTPUT
63# @DESCRIPTION:
64# A string passed on commandline, or set from the kernel makefile. It contains the directory
33# which is to be used as the kernel object directory. 65# which is to be used as the kernel object directory.
34 66
35# There are also a couple of variables which are set by this, and shouldn't be 67# There are also a couple of variables which are set by this, and shouldn't be
36# set by hand. These are as follows: 68# set by hand. These are as follows:
37# 69
38# Env Var Option Description 70# @ECLASS-VARIABLE: KV_FULL
39# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1 71# @DESCRIPTION:
40# KV_MAJOR <integer> The kernel major version. ie: 2 72# A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
41# KV_MINOR <integer> The kernel minor version. ie: 6 73
42# KV_PATCH <integer> The kernel patch version. ie: 9 74# @ECLASS-VARIABLE: KV_MAJOR
43# KV_EXTRA <string> The kernel EXTRAVERSION. ie: -gentoo 75# @DESCRIPTION:
44# KV_LOCAL <string> The kernel LOCALVERSION concatenation. ie: -johnm 76# A read-only variable. It's an integer containing the kernel major version. ie: 2
45# KV_DIR <string> The kernel source directory, will be null if 77
78# @ECLASS-VARIABLE: KV_MINOR
79# @DESCRIPTION:
80# A read-only variable. It's an integer containing the kernel minor version. ie: 6
81
82# @ECLASS-VARIABLE: KV_PATCH
83# @DESCRIPTION:
84# A read-only variable. It's an integer containing the kernel patch version. ie: 9
85
86# @ECLASS-VARIABLE: KV_EXTRA
87# @DESCRIPTION:
88# A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
89
90# @ECLASS-VARIABLE: KV_LOCAL
91# @DESCRIPTION:
92# A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
93
94# @ECLASS-VARIABLE: KV_DIR
95# @DESCRIPTION:
96# A read-only variable. It's a string containing the kernel source directory, will be null if
46# KERNEL_DIR is invalid. 97# KERNEL_DIR is invalid.
47# KV_OUT_DIR <string> The kernel object directory. will be KV_DIR unless 98
48# koutput is used. This should be used for referencing 99# @ECLASS-VARIABLE: KV_OUT_DIR
49# .config. 100# @DESCRIPTION:
101# A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
102# KBUILD_OUTPUT is used. This should be used for referencing .config.
50 103
51# And to ensure all the weirdness with crosscompile 104# And to ensure all the weirdness with crosscompile
52inherit toolchain-funcs versionator 105inherit toolchain-funcs versionator
53 106
54ECLASS=linux-info
55INHERITED="$INHERITED $ECLASS"
56EXPORT_FUNCTIONS pkg_setup 107EXPORT_FUNCTIONS pkg_setup
108
109DEPEND=""
110RDEPEND=""
57 111
58# Overwritable environment Var's 112# Overwritable environment Var's
59# --------------------------------------- 113# ---------------------------------------
60KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 114KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
61 115
62 116
63# Bug fixes 117# Bug fixes
64# fix to bug #75034 118# fix to bug #75034
65case ${ARCH} in 119case ${ARCH} in
66 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 120 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
67 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 121 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
68esac 122esac
69 123
70# These are legacy wrappers for toolchain-funcs. 124# @FUNCTION: set_arch_to_kernel
71# I dont like them here, but oh well. 125# @DESCRIPTION:
126# Set the env ARCH to match what the kernel expects.
72set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 127set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
128# @FUNCTION: set_arch_to_portage
129# @DESCRIPTION:
130# Set the env ARCH to match what portage expects.
73set_arch_to_portage() { export ARCH="$(tc-arch)"; } 131set_arch_to_portage() { export ARCH=$(tc-arch); }
74 132
75# qeinfo "Message" 133# qeinfo "Message"
76# ------------------- 134# -------------------
77# qeinfo is a quiet einfo call when EBUILD_PHASE 135# qeinfo is a quiet einfo call when EBUILD_PHASE
78# should not have visible output. 136# should not have visible output.
79qout() { 137qout() {
80 local outputmsg type 138 local outputmsg type
81 type=${1} 139 type=${1}
82 shift 140 shift
83 outputmsg="${@}" 141 outputmsg="${@}"
84 case "${EBUILD_PHASE}" in 142 case "${EBUILD_PHASE}" in
85 depend) unset outputmsg;; 143 depend) unset outputmsg;;
86 clean) unset outputmsg;; 144 clean) unset outputmsg;;
87 preinst) unset outputmsg;; 145 preinst) unset outputmsg;;
88 esac 146 esac
89 [ -n "${outputmsg}" ] && ${type} "${outputmsg}" 147 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
90} 148}
91 149
92qeinfo() { qout einfo "${@}" ; } 150qeinfo() { qout einfo "${@}" ; }
151qewarn() { qout ewarn "${@}" ; }
93qeerror() { qout eerror "${@}" ; } 152qeerror() { qout eerror "${@}" ; }
94 153
95# File Functions 154# File Functions
96# --------------------------------------- 155# ---------------------------------------
97 156
98# getfilevar accepts 2 vars as follows: 157# @FUNCTION: getfilevar
99# getfilevar <VARIABLE> <CONFIGFILE> 158# @USAGE: variable configfile
100 159# @RETURN: the value of the variable
160# @DESCRIPTION:
161# It detects the value of the variable defined in the file configfile. This is
162# done by including the configfile, and printing the variable with Make.
163# It WILL break if your makefile has missing dependencies!
101getfilevar() { 164getfilevar() {
102local ERROR workingdir basefname basedname myARCH="${ARCH}" 165local ERROR basefname basedname myARCH="${ARCH}"
103 ERROR=0 166 ERROR=0
104 167
105 [ -z "${1}" ] && ERROR=1 168 [ -z "${1}" ] && ERROR=1
106 [ ! -f "${2}" ] && ERROR=1 169 [ ! -f "${2}" ] && ERROR=1
107 170
109 then 172 then
110 echo -e "\n" 173 echo -e "\n"
111 eerror "getfilevar requires 2 variables, with the second a valid file." 174 eerror "getfilevar requires 2 variables, with the second a valid file."
112 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 175 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
113 else 176 else
114 workingdir=${PWD}
115 basefname=$(basename ${2}) 177 basefname="$(basename ${2})"
116 basedname=$(dirname ${2}) 178 basedname="$(dirname ${2})"
117 unset ARCH 179 unset ARCH
118 180
119 cd ${basedname} 181 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
120 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ 182 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
121 make ${BUILD_FIXES} -f - e 2>/dev/null
122 cd ${workingdir}
123 183
124 ARCH=${myARCH} 184 ARCH=${myARCH}
125 fi 185 fi
126} 186}
127 187
188# @FUNCTION: getfilevar_noexec
189# @USAGE: variable configfile
190# @RETURN: the value of the variable
191# @DESCRIPTION:
192# It detects the value of the variable defined in the file configfile.
193# This is done with sed matching an expression only. If the variable is defined,
194# you will run into problems. See getfilevar for those cases.
195getfilevar_noexec() {
196 local ERROR basefname basedname mycat myARCH="${ARCH}"
197 ERROR=0
198 mycat='cat'
199
200 [ -z "${1}" ] && ERROR=1
201 [ ! -f "${2}" ] && ERROR=1
202 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
203
204 if [ "${ERROR}" = 1 ]
205 then
206 echo -e "\n"
207 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
208 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
209 else
210 ${mycat} "${2}" | \
211 sed -n \
212 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
213 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
214 s,[[:space:]]*\$,,g ;
215 p
216 }"
217 fi
218}
219
220# @PRIVATE-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
221# @DESCRIPTION:
222# This is only set if one of the linux_config_*exists functions has been called.
223# We use it for a QA warning that the check for a config has not been performed,
224# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
225# config is available at all.
226_LINUX_CONFIG_EXISTS_DONE=
227
228linux_config_qa_check() {
229 local f="$1"
230 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
231 ewarn "QA: You called $f before any linux_config_exists!"
232 ewarn "QA: The return value of $f will NOT guaranteed later!"
233 fi
234}
235
236# @FUNCTION: linux_config_src_exists
237# @RETURN: true or false
238# @DESCRIPTION:
239# It returns true if .config exists in a build directory otherwise false
240linux_config_src_exists() {
241 export _LINUX_CONFIG_EXISTS_DONE=1
242 [ -s "${KV_OUT_DIR}/.config" ]
243}
244
245# @FUNCTION: linux_config_bin_exists
246# @RETURN: true or false
247# @DESCRIPTION:
248# It returns true if .config exists in /proc, otherwise false
249linux_config_bin_exists() {
250 export _LINUX_CONFIG_EXISTS_DONE=1
251 [ -s "/proc/config.gz" ]
252}
253
254# @FUNCTION: linux_config_exists
255# @RETURN: true or false
256# @DESCRIPTION:
257# It returns true if .config exists otherwise false
258#
259# This function MUST be checked before using any of the linux_chkconfig_*
260# functions.
261linux_config_exists() {
262 linux_config_src_exists || linux_config_bin_exists
263}
264
265# @FUNCTION: require_configured_kernel
266# @DESCRIPTION:
267# This function verifies that the current kernel is configured (it checks against the existence of .config)
268# otherwise it dies.
269require_configured_kernel() {
270 if ! linux_config_src_exists; then
271 qeerror "Could not find a usable .config in the kernel source directory."
272 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
273 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
274 qeerror "it points to the necessary object directory so that it might find .config."
275 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
276 fi
277}
278
279# @FUNCTION: linux_chkconfig_present
280# @USAGE: option
281# @RETURN: true or false
282# @DESCRIPTION:
283# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
284# If linux_config_exists returns false, the results of this are UNDEFINED. You
285# MUST call linux_config_exists first.
128linux_chkconfig_present() { 286linux_chkconfig_present() {
287 linux_config_qa_check linux_chkconfig_present
129local RESULT 288 local RESULT
289 local config
290 config="${KV_OUT_DIR}/.config"
291 [ ! -f "${config}" ] && config="/proc/config.gz"
130 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 292 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
131 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 293 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
132} 294}
133 295
296# @FUNCTION: linux_chkconfig_module
297# @USAGE: option
298# @RETURN: true or false
299# @DESCRIPTION:
300# It checks that CONFIG_<option>=m is present in the current kernel .config
301# If linux_config_exists returns false, the results of this are UNDEFINED. You
302# MUST call linux_config_exists first.
134linux_chkconfig_module() { 303linux_chkconfig_module() {
304 linux_config_qa_check linux_chkconfig_module
135local RESULT 305 local RESULT
306 local config
307 config="${KV_OUT_DIR}/.config"
308 [ ! -f "${config}" ] && config="/proc/config.gz"
136 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 309 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
137 [ "${RESULT}" = "m" ] && return 0 || return 1 310 [ "${RESULT}" = "m" ] && return 0 || return 1
138} 311}
139 312
313# @FUNCTION: linux_chkconfig_builtin
314# @USAGE: option
315# @RETURN: true or false
316# @DESCRIPTION:
317# It checks that CONFIG_<option>=y is present in the current kernel .config
318# If linux_config_exists returns false, the results of this are UNDEFINED. You
319# MUST call linux_config_exists first.
140linux_chkconfig_builtin() { 320linux_chkconfig_builtin() {
321 linux_config_qa_check linux_chkconfig_builtin
141local RESULT 322 local RESULT
323 local config
324 config="${KV_OUT_DIR}/.config"
325 [ ! -f "${config}" ] && config="/proc/config.gz"
142 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 326 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
143 [ "${RESULT}" = "y" ] && return 0 || return 1 327 [ "${RESULT}" = "y" ] && return 0 || return 1
144} 328}
145 329
330# @FUNCTION: linux_chkconfig_string
331# @USAGE: option
332# @RETURN: CONFIG_<option>
333# @DESCRIPTION:
334# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
335# If linux_config_exists returns false, the results of this are UNDEFINED. You
336# MUST call linux_config_exists first.
146linux_chkconfig_string() { 337linux_chkconfig_string() {
338 linux_config_qa_check linux_chkconfig_string
339 local config
340 config="${KV_OUT_DIR}/.config"
341 [ ! -f "${config}" ] && config="/proc/config.gz"
147 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 342 getfilevar_noexec "CONFIG_${1}" "${config}"
148} 343}
149 344
150# Versioning Functions 345# Versioning Functions
151# --------------------------------------- 346# ---------------------------------------
152 347
153# kernel_is returns true when the version is the same as the passed version 348# @FUNCTION: kernel_is
349# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
350# @RETURN: true or false
351# @DESCRIPTION:
352# It returns true when the current kernel version satisfies the comparison against the passed version.
353# -eq is the default comparison.
154# 354#
355# @CODE
155# For Example where KV = 2.6.9 356# For Example where KV = 2.6.9
156# kernel_is 2 4 returns false 357# kernel_is 2 4 returns false
157# kernel_is 2 returns true 358# kernel_is 2 returns true
158# kernel_is 2 6 returns true 359# kernel_is 2 6 returns true
159# kernel_is 2 6 8 returns false 360# kernel_is 2 6 8 returns false
160# kernel_is 2 6 9 returns true 361# kernel_is 2 6 9 returns true
161# 362# @CODE
363
162# got the jist yet? 364# got the jist yet?
163 365
164kernel_is() { 366kernel_is() {
165 # if we haven't determined the version yet, we need too. 367 # if we haven't determined the version yet, we need to.
166 get_version; 368 linux-info_get_any_version
369
167 local operator test value x=0 y=0 z=0 370 local operator testagainst value x=0 y=0 z=0
168 371
169 case ${1} in 372 case ${1} in
170 lt) operator="-lt"; shift;; 373 -lt|lt) operator="-lt"; shift;;
171 gt) operator="-gt"; shift;; 374 -gt|gt) operator="-gt"; shift;;
172 le) operator="-le"; shift;; 375 -le|le) operator="-le"; shift;;
173 ge) operator="-ge"; shift;; 376 -ge|ge) operator="-ge"; shift;;
174 eq) operator="-eq"; shift;; 377 -eq|eq) operator="-eq"; shift;;
175 *) operator="-eq";; 378 *) operator="-eq";;
176 esac 379 esac
177 380
178 for x in ${@}; do 381 for x in ${@}; do
179 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done 382 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
180 value="${value}${x}" 383 value="${value}${x}"
181 z=$((${z} + 1)) 384 z=$((${z} + 1))
182 385
183 case ${z} in 386 case ${z} in
184 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done; 387 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do testagainst="${testagainst}0"; done;
185 test="${test}${KV_MAJOR}";; 388 testagainst="${testagainst}${KV_MAJOR}";;
186 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done; 389 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do testagainst="${testagainst}0"; done;
187 test="${test}${KV_MINOR}";; 390 testagainst="${testagainst}${KV_MINOR}";;
188 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 391 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do testagainst="${testagainst}0"; done;
189 test="${test}${KV_PATCH}";; 392 testagainst="${testagainst}${KV_PATCH}";;
190 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 393 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
191 esac 394 esac
192 done 395 done
193 396
194 [ ${test} ${operator} ${value} ] && return 0 || return 1 397 [ "${testagainst}" ${operator} "${value}" ] && return 0 || return 1
195} 398}
196 399
400get_localversion() {
401 local lv_list i x
402
403 # ignore files with ~ in it.
404 for i in $(ls ${1}/localversion* 2>/dev/null); do
405 [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
406 done
407
408 for i in ${lv_list}; do
409 x="${x}$(<${i})"
410 done
411 x=${x/ /}
412 echo ${x}
413}
414
415# Check if the Makefile is valid for direct parsing.
416# Check status results:
417# - PASS, use 'getfilevar' to extract values
418# - FAIL, use 'getfilevar_noexec' to extract values
419# The check may fail if:
420# - make is not present
421# - corruption exists in the kernel makefile
422get_makefile_extract_function() {
423 local a='' b='' mkfunc='getfilevar'
424 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
425 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
426 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
427 echo "${mkfunc}"
428}
429
430# internal variable, so we know to only print the warning once
431get_version_warning_done=
432
433# @FUNCTION: get_version
434# @DESCRIPTION:
435# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
436# (if KV_FULL is already set it does nothing).
437#
438# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
439#
440# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
441# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
442# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
197get_version() { 443get_version() {
198 local kbuild_output 444 local kbuild_output mkfunc tmplocal
199 445
200 # no need to execute this twice assuming KV_FULL is populated. 446 # no need to execute this twice assuming KV_FULL is populated.
201 # we can force by unsetting KV_FULL 447 # we can force by unsetting KV_FULL
202 [ -n "${KV_FULL}" ] && return 0 448 [ -n "${KV_FULL}" ] && return 0
203 449
204 # if we dont know KV_FULL, then we need too. 450 # if we dont know KV_FULL, then we need too.
205 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 451 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
206 unset KV_DIR 452 unset KV_DIR
207 453
208 # KV_DIR will contain the full path to the sources directory we should use 454 # KV_DIR will contain the full path to the sources directory we should use
455 [ -z "${get_version_warning_done}" ] && \
209 qeinfo "Determining the location of the kernel source code" 456 qeinfo "Determining the location of the kernel source code"
210 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 457 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
211 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 458 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
212 459
213 if [ -z "${KV_DIR}" ] 460 if [ -z "${KV_DIR}" ]
214 then 461 then
462 if [ -z "${get_version_warning_done}" ]; then
463 get_version_warning_done=1
215 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 464 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
216 qeinfo "This package requires Linux sources." 465 #qeinfo "This package requires Linux sources."
217 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 466 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
218 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 467 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
219 qeinfo "(or the kernel you wish to build against)." 468 qeinfo "(or the kernel you wish to build against)."
220 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 469 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
221 else 470 else
222 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 471 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
472 fi
223 fi 473 fi
224 return 1 474 return 1
225 fi 475 fi
226 476
477 if [ -z "${get_version_warning_done}" ]; then
227 qeinfo "Found kernel source directory:" 478 qeinfo "Found kernel source directory:"
228 qeinfo " ${KV_DIR}" 479 qeinfo " ${KV_DIR}"
480 fi
229 481
230 if [ ! -s "${KV_DIR}/Makefile" ] 482 if [ ! -s "${KV_DIR}/Makefile" ]
231 then 483 then
484 if [ -z "${get_version_warning_done}" ]; then
485 get_version_warning_done=1
232 qeerror "Could not find a Makefile in the kernel source directory." 486 qeerror "Could not find a Makefile in the kernel source directory."
233 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 487 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
488 fi
234 return 1 489 return 1
235 fi 490 fi
236 491
237 # OK so now we know our sources directory, but they might be using 492 # OK so now we know our sources directory, but they might be using
238 # KBUILD_OUTPUT, and we need this for .config and localversions-* 493 # KBUILD_OUTPUT, and we need this for .config and localversions-*
239 # so we better find it eh? 494 # so we better find it eh?
240 # do we pass KBUILD_OUTPUT on the CLI? 495 # do we pass KBUILD_OUTPUT on the CLI?
241 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 496 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
242 497
498 # keep track of it
499 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
500
501 # Decide the function used to extract makefile variables.
502 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
503
243 # And if we didn't pass it, we can take a nosey in the Makefile 504 # And if we didn't pass it, we can take a nosey in the Makefile
244 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 505 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
245 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 506 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
246 507
247 # And contrary to existing functions I feel we shouldn't trust the 508 # And contrary to existing functions I feel we shouldn't trust the
248 # directory name to find version information as this seems insane. 509 # directory name to find version information as this seems insane.
249 # so we parse ${KV_DIR}/Makefile 510 # so we parse ${KERNEL_MAKEFILE}
250 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 511 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
251 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 512 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
252 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 513 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
253 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 514 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
254 515
255 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 516 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
256 then 517 then
518 if [ -z "${get_version_warning_done}" ]; then
519 get_version_warning_done=1
257 qeerror "Could not detect kernel version." 520 qeerror "Could not detect kernel version."
258 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 521 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
522 fi
259 return 1 523 return 1
260 fi 524 fi
261 525
262 # and in newer versions we can also pull LOCALVERSION if it is set. 526 # and in newer versions we can also pull LOCALVERSION if it is set.
263 # but before we do this, we need to find if we use a different object directory. 527 # but before we do this, we need to find if we use a different object directory.
264 # This *WILL* break if the user is using localversions, but we assume it was 528 # This *WILL* break if the user is using localversions, but we assume it was
265 # caught before this if they are. 529 # caught before this if they are.
266 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \
267 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" 530 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
268 531
269 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 532 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
270 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 533 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
271 if [ -n "${KV_OUT_DIR}" ]; 534 if [ -n "${KV_OUT_DIR}" ];
272 then 535 then
273 qeinfo "Found kernel object directory:" 536 qeinfo "Found kernel object directory:"
274 qeinfo " ${KV_OUT_DIR}" 537 qeinfo " ${KV_OUT_DIR}"
275
276 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)"
277 fi 538 fi
278 # and if we STILL haven't got it, then we better just set it to KV_DIR 539 # and if we STILL have not got it, then we better just set it to KV_DIR
279 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 540 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
280 541
281 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)" 542 # Grab the kernel release from the output directory.
282 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 543 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
283 KV_LOCAL="${KV_LOCAL//\"/}" 544 # this function.
545 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
546 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
547 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
548 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
549 else
550 KV_LOCAL=
551 fi
552
553 # KV_LOCAL currently contains the full release; discard the first bits.
554 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
555
556 # If the updated local version was not changed, the tree is not prepared.
557 # Clear out KV_LOCAL in that case.
558 # TODO: this does not detect a change in the localversion part between
559 # kernel.release and the value that would be generated.
560 if [ "$KV_LOCAL" = "$tmplocal" ]; then
561 KV_LOCAL=
562 else
563 KV_LOCAL=$tmplocal
564 fi
284 565
285 # And we should set KV_FULL to the full expanded version 566 # And we should set KV_FULL to the full expanded version
286 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 567 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
287 568
288 qeinfo "Found sources for kernel version:" 569 qeinfo "Found sources for kernel version:"
289 qeinfo " ${KV_FULL}" 570 qeinfo " ${KV_FULL}"
290 571
291 if [ ! -s "${KV_OUT_DIR}/.config" ]
292 then
293 qeerror "Could not find a usable .config in the kernel source directory."
294 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
295 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
296 qeerror "it points to the necessary object directory so that it might find .config."
297 return 1
298 fi
299
300 return 0 572 return 0
301} 573}
302 574
575# @FUNCTION: get_running_version
576# @DESCRIPTION:
577# It gets the version of the current running kernel and the result is the same as get_version() if the
578# function can find the sources.
303get_running_version() { 579get_running_version() {
304 KV_FULL=$(uname -r) 580 KV_FULL=$(uname -r)
305 581
582 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
583 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
584 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
585 unset KV_FULL
586 get_version
587 return $?
306 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 588 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
307 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 589 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
308 unset KV_FULL 590 unset KV_FULL
309 get_version 591 get_version
310 return $? 592 return $?
311 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then 593 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
314 get_version 596 get_version
315 return $? 597 return $?
316 else 598 else
317 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 599 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
318 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 600 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
319 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 601 KV_PATCH=$(get_version_component_range 3 ${KV_FULL})
320 KV_PATCH=${KV_PATCH//-*} 602 KV_PATCH=${KV_PATCH//-*}
321 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 603 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}}"
322 && KV_EXTRA="-${KV_FULL#*-}"
323 fi 604 fi
324 return 0 605 return 0
606}
607
608# This next function is named with the eclass prefix to avoid conflicts with
609# some old versionator-like eclass functions.
610
611# @FUNCTION: linux-info_get_any_version
612# @DESCRIPTION:
613# This attempts to find the version of the sources, and otherwise falls back to
614# the version of the running kernel.
615linux-info_get_any_version() {
616 get_version
617 if [[ $? -ne 0 ]]; then
618 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
619 get_running_version
620 fi
325} 621}
326 622
327 623
328# ebuild check functions 624# ebuild check functions
329# --------------------------------------- 625# ---------------------------------------
330 626
627# @FUNCTION: check_kernel_built
628# @DESCRIPTION:
629# This function verifies that the current kernel sources have been already prepared otherwise it dies.
331check_kernel_built() { 630check_kernel_built() {
332 # if we haven't determined the version yet, we need too. 631 # if we haven't determined the version yet, we need to
632 require_configured_kernel
333 get_version; 633 get_version
334 634
335 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 635 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
336 then 636 then
337 eerror "These sources have not yet been prepared." 637 eerror "These sources have not yet been prepared."
338 eerror "We cannot build against an unprepared tree." 638 eerror "We cannot build against an unprepared tree."
339 eerror "To resolve this, please type the following:" 639 eerror "To resolve this, please type the following:"
345 eerror "Then please try merging this module again." 645 eerror "Then please try merging this module again."
346 die "Kernel sources need compiling first" 646 die "Kernel sources need compiling first"
347 fi 647 fi
348} 648}
349 649
650# @FUNCTION: check_modules_supported
651# @DESCRIPTION:
652# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
350check_modules_supported() { 653check_modules_supported() {
351 # if we haven't determined the version yet, we need too. 654 # if we haven't determined the version yet, we need too.
655 require_configured_kernel
352 get_version; 656 get_version
353 657
354 if ! linux_chkconfig_builtin "MODULES" 658 if ! linux_chkconfig_builtin "MODULES"
355 then 659 then
356 eerror "These sources do not support loading external modules." 660 eerror "These sources do not support loading external modules."
357 eerror "to be able to use this module please enable \"Loadable modules support\"" 661 eerror "to be able to use this module please enable \"Loadable modules support\""
358 eerror "in your kernel, recompile and then try merging this module again." 662 eerror "in your kernel, recompile and then try merging this module again."
359 die "No support for external modules in ${KV_FULL} config" 663 die "No support for external modules in ${KV_FULL} config"
360 fi 664 fi
361} 665}
362 666
667# @FUNCTION: check_extra_config
668# @DESCRIPTION:
669# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
670# the prefix ~ is not used) doesn't satisfy the directive.
363check_extra_config() { 671check_extra_config() {
364 local config negate error local_error i n temp_config 672 local config negate die error reworkmodulenames
673 local soft_errors_count=0 hard_errors_count=0 config_required=0
674 # store the value of the QA check, because otherwise we won't catch usages
675 # after if check_extra_config is called AND other direct calls are done
676 # later.
677 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
365 678
366 # if we haven't determined the version yet, we need too. 679 # if we haven't determined the version yet, we need to
367 get_version; 680 linux-info_get_any_version
368 681
369 einfo "Checking for suitable kernel configuration options" 682 # Determine if we really need a .config. The only time when we don't need
683 # one is when all of the CONFIG_CHECK options are prefixed with "~".
370 for config in ${CONFIG_CHECK} 684 for config in ${CONFIG_CHECK}
371 do 685 do
372 negate="${config:0:1}" 686 if [[ "${config:0:1}" != "~" ]]; then
373 if [ "${negate}" == "!" ]; 687 config_required=1
374 then 688 break
689 fi
690 done
691
692 if [[ ${config_required} == 0 ]]; then
693 # In the case where we don't require a .config, we can now bail out
694 # if the user has no .config as there is nothing to do. Otherwise
695 # code later will cause a failure due to missing .config.
696 if ! linux_config_exists; then
697 ewarn "Unable to check for the following kernel config options due"
698 ewarn "to absence of any configured kernel sources or compiled"
699 ewarn "config:"
700 for config in ${CONFIG_CHECK}; do
701 local_error="ERROR_${config#\~}"
702 msg="${!local_error}"
703 if [[ "x${msg}" == "x" ]]; then
704 local_error="WARNING_${config#\~}"
705 msg="${!local_error}"
706 fi
707 ewarn " - ${config#\~}${msg:+ - }${msg}"
708 done
709 ewarn "You're on your own to make sure they are set if needed."
710 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
711 return 0
712 fi
713 else
714 require_configured_kernel
715 fi
716
717 einfo "Checking for suitable kernel configuration options..."
718
719 for config in ${CONFIG_CHECK}
720 do
721 # if we specify any fatal, ensure we honor them
722 die=1
723 error=0
724 negate=0
725 reworkmodulenames=0
726
727 if [[ ${config:0:1} == "~" ]]; then
728 die=0
375 config="${config:1}" 729 config=${config:1}
730 elif [[ ${config:0:1} == "@" ]]; then
731 die=0
732 reworkmodulenames=1
733 config=${config:1}
734 fi
735 if [[ ${config:0:1} == "!" ]]; then
736 negate=1
737 config=${config:1}
738 fi
739
740 if [[ ${negate} == 1 ]]; then
741 linux_chkconfig_present ${config} && error=2
742 elif [[ ${reworkmodulenames} == 1 ]]; then
743 local temp_config="${config//*:}" i n
744 config="${config//:*}"
376 if linux_chkconfig_present ${config} 745 if linux_chkconfig_present ${config}; then
377 then 746 for i in ${MODULE_NAMES}; do
747 n="${i//${temp_config}}"
748 [[ -z ${n//\(*} ]] && \
749 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
750 done
751 error=2
752 fi
753 else
754 linux_chkconfig_present ${config} || error=1
755 fi
756
757 if [[ ${error} > 0 ]]; then
758 local report_func="eerror" local_error
759 local_error="ERROR_${config}"
760 local_error="${!local_error}"
761
762 if [[ -z "${local_error}" ]]; then
763 # using old, deprecated format.
378 local_error="${config}_ERROR" 764 local_error="${config}_ERROR"
379 local_error="${!local_error}" 765 local_error="${!local_error}"
380 [ -n "${local_error}" ] && eerror " ${local_error}" || \
381 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is."
382 error=1
383 fi 766 fi
384 elif [ "${negate}" == "@" ]; 767 if [[ ${die} == 0 && -z "${local_error}" ]]; then
385 then 768 #soft errors can be warnings
386 # we never call this unless we are using MODULE_NAMES
387
388 config="${config:1}"
389 temp_config="${config//*:}"
390 config="${config//:*}"
391 if linux_chkconfig_present ${config}
392 then
393 local_error="${config}_ERROR" 769 local_error="WARNING_${config}"
394 local_error="${!local_error}" 770 local_error="${!local_error}"
395 [ -n "${local_error}" ] && eerror " ${local_error}" || \ 771 if [[ -n "${local_error}" ]] ; then
396 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is." 772 report_func="ewarn"
397 773 fi
398 for i in ${MODULE_NAMES}
399 do
400 n="${i//${temp_config}}"
401 [ -z "${n//(*}" ] && MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
402 done
403 error=0
404 fi 774 fi
405 else 775
406 if ! linux_chkconfig_present ${config}
407 then
408 # Support the new syntax first.
409 local_error="ERROR_${config}"
410 local_error="${!local_error}"
411
412 # then fall back on the older syntax.
413 if [[ -z ${local_error} ]] ; then 776 if [[ -z "${local_error}" ]]; then
414 local_error="${config}_ERROR" 777 [[ ${error} == 1 ]] \
415 local_error="${!local_error}" 778 && local_error="is not set when it should be." \
416 fi 779 || local_error="should not be set. But it is."
417 780 local_error="CONFIG_${config}:\t ${local_error}"
418 [[ -n ${local_error} ]] && eerror " ${local_error}" || \
419 eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't"
420 error=1
421 fi 781 fi
782 if [[ ${die} == 0 ]]; then
783 ${report_func} " ${local_error}"
784 soft_errors_count=$[soft_errors_count + 1]
785 else
786 ${report_func} " ${local_error}"
787 hard_errors_count=$[hard_errors_count + 1]
788 fi
422 fi 789 fi
423 done 790 done
424 791
425 if [ "${error}" == 1 ] ; 792 if [[ ${hard_errors_count} > 0 ]]; then
426 then
427 eerror "Please check to make sure these options are set correctly." 793 eerror "Please check to make sure these options are set correctly."
794 eerror "Failure to do so may cause unexpected problems."
428 eerror "Once you have satisfied these options, please try merging" 795 eerror "Once you have satisfied these options, please try merging"
429 eerror "this package again." 796 eerror "this package again."
797 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
430 die "Incorrect kernel configuration options" 798 die "Incorrect kernel configuration options"
799 elif [[ ${soft_errors_count} > 0 ]]; then
800 ewarn "Please check to make sure these options are set correctly."
801 ewarn "Failure to do so may cause unexpected problems."
802 else
803 eend 0
431 fi 804 fi
805 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
432} 806}
433 807
434check_zlibinflate() { 808check_zlibinflate() {
435 # if we haven't determined the version yet, we need too. 809 # if we haven't determined the version yet, we need to
810 require_configured_kernel
436 get_version; 811 get_version
437 812
438 # although I restructured this code - I really really really dont support it! 813 # although I restructured this code - I really really really dont support it!
439 814
440 # bug #27882 - zlib routines are only linked into the kernel 815 # bug #27882 - zlib routines are only linked into the kernel
441 # if something compiled into the kernel calls them 816 # if something compiled into the kernel calls them
442 # 817 #
443 # plus, for the cloop module, it appears that there's no way 818 # plus, for the cloop module, it appears that there's no way
444 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS 819 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
445 # is on 820 # is on
446 821
447local INFLATE 822 local INFLATE
448local DEFLATE 823 local DEFLATE
449 824
450 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 825 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
451 826
452 ebegin "checking ZLIB_INFLATE" 827 ebegin "checking ZLIB_INFLATE"
453 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 828 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
454 eend $? 829 eend $?
455 [ "$?" != 0 ] && die 830 [ "$?" != 0 ] && die
456 831
457 ebegin "checking ZLIB_DEFLATE" 832 ebegin "checking ZLIB_DEFLATE"
458 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 833 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
459 eend $? 834 eend $?
460 [ "$?" != 0 ] && die 835 [ "$?" != 0 ] && die
461 836
462
463 local LINENO_START 837 local LINENO_START
464 local LINENO_END 838 local LINENO_END
465 local SYMBOLS 839 local SYMBOLS
466 local x 840 local x
467 841
468 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 842 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
469 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" 843 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
470 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 844 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
471 (( LINENO_END = $LINENO_END - 1 )) 845 (( LINENO_END = $LINENO_END - 1 ))
472 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" 846 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
478 # we have a winner! 852 # we have a winner!
479 einfo "${x} ensures zlib is linked into your kernel - excellent" 853 einfo "${x} ensures zlib is linked into your kernel - excellent"
480 return 0 854 return 0
481 fi 855 fi
482 done 856 done
483 857
484 eerror 858 eerror
485 eerror "This kernel module requires ZLIB library support." 859 eerror "This kernel module requires ZLIB library support."
486 eerror "You have enabled zlib support in your kernel, but haven't enabled" 860 eerror "You have enabled zlib support in your kernel, but haven't enabled"
487 eerror "enabled any option that will ensure that zlib is linked into your" 861 eerror "enabled any option that will ensure that zlib is linked into your"
488 eerror "kernel." 862 eerror "kernel."
502} 876}
503 877
504################################ 878################################
505# Default pkg_setup 879# Default pkg_setup
506# Also used when inheriting linux-mod to force a get_version call 880# Also used when inheriting linux-mod to force a get_version call
507 881# @FUNCTION: linux-info_pkg_setup
882# @DESCRIPTION:
883# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
884# to support the options specified in CONFIG_CHECK (if not null)
508linux-info_pkg_setup() { 885linux-info_pkg_setup() {
509 get_version || die "Unable to calculate Linux Kernel version" 886 linux-info_get_any_version
887
888 if kernel_is 2 4; then
889 if [ "$( gcc-major-version )" -eq "4" ] ; then
890 echo
891 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
892 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
893 echo
894 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
895 ewarn "newer kernel that supports gcc-4."
896 echo
897 ewarn "Also be aware that bugreports about gcc-4 not working"
898 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
899 echo
900 epause 10
901 fi
902 fi
903
510 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 904 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
511} 905}

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