/[gentoo-x86]/eclass/linux-info.eclass
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Revision 1.12 Revision 1.61
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 1.12 2004/12/28 20:05:45 johnm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.61 2009/08/30 22:37:06 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 sources 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.
15 20
16# A Couple of env vars are available to effect usage of this eclass 21# A Couple of env vars are available to effect usage of this eclass
17# These are as follows: 22# These are as follows:
18# 23
19# Env Var Option Description 24# @ECLASS-VARIABLE: KERNEL_DIR
20# KERNEL_DIR <string> The directory containing kernel the target kernel 25# @DESCRIPTION:
21# sources. 26# A string containing the directory of the target kernel sources. The default value is
27# "/usr/src/linux"
28
29# @ECLASS-VARIABLE: CONFIG_CHECK
30# @DESCRIPTION:
22# CONFIG_CHECK <string> a list of .config options to check for before 31# A string containing a list of .config options to check for before
23# proceeding with the install. ie: CONFIG_CHECK="MTRR" 32# proceeding with the install.
33#
34# e.g.: CONFIG_CHECK="MTRR"
35#
24# You can also check that an option doesn't exist by 36# You can also check that an option doesn't exist by
25# prepending it with an exclamation mark (!). 37# prepending it with an exclamation mark (!).
38#
26# ie: CONFIG_CHECK="!MTRR" 39# e.g.: CONFIG_CHECK="!MTRR"
27# <CFG>_ERROR <string> The error message to display when the above check 40#
41# To simply warn about a missing option, prepend a '~'.
42
43# @ECLASS-VARIABLE: ERROR_<CFG>
44# @DESCRIPTION:
45# A string containing the error message to display when the check against CONFIG_CHECK
28# fails. <CFG> should reference the appropriate option 46# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
29# as above. ie: MTRR_ERROR="MTRR exists in the .config 47#
30# but shouldn't!!" 48# 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 49
32# the kernel makefile. This contains the directory 50# @ECLASS-VARIABLE: KBUILD_OUTPUT
51# @DESCRIPTION:
52# 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. 53# which is to be used as the kernel object directory.
34 54
35# There are also a couple of variables which are set by this, and shouldn't be 55# There are also a couple of variables which are set by this, and shouldn't be
36# set by hand. These are as follows: 56# set by hand. These are as follows:
37# 57
38# Env Var Option Description 58# @ECLASS-VARIABLE: KV_FULL
39# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1 59# @DESCRIPTION:
40# KV_MAJOR <integer> The kernel major version. ie: 2 60# 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 61
42# KV_PATCH <integer> The kernel patch version. ie: 9 62# @ECLASS-VARIABLE: KV_MAJOR
43# KV_EXTRA <string> The kernel EXTRAVERSION. ie: -gentoo 63# @DESCRIPTION:
44# KV_LOCAL <string> The kernel LOCALVERSION concatenation. ie: -johnm 64# 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 65
66# @ECLASS-VARIABLE: KV_MINOR
67# @DESCRIPTION:
68# A read-only variable. It's an integer containing the kernel minor version. ie: 6
69
70# @ECLASS-VARIABLE: KV_PATCH
71# @DESCRIPTION:
72# A read-only variable. It's an integer containing the kernel patch version. ie: 9
73
74# @ECLASS-VARIABLE: KV_EXTRA
75# @DESCRIPTION:
76# A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
77
78# @ECLASS-VARIABLE: KV_LOCAL
79# @DESCRIPTION:
80# A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
81
82# @ECLASS-VARIABLE: KV_DIR
83# @DESCRIPTION:
84# A read-only variable. It's a string containing the kernel source directory, will be null if
46# KERNEL_DIR is invalid. 85# KERNEL_DIR is invalid.
47# KV_OUT_DIR <string> The kernel object directory. will be KV_DIR unless
48# koutput is used. This should be used for referencing
49# .config.
50 86
87# @ECLASS-VARIABLE: KV_OUT_DIR
88# @DESCRIPTION:
89# A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
90# KBUILD_OUTPUT is used. This should be used for referencing .config.
51 91
52ECLASS=linux-info 92# And to ensure all the weirdness with crosscompile
53INHERITED="$INHERITED $ECLASS" 93inherit toolchain-funcs versionator
94
54EXPORT_FUNCTIONS pkg_setup 95EXPORT_FUNCTIONS pkg_setup
96
97DEPEND="kernel_linux? ( virtual/linux-sources )"
98RDEPEND=""
55 99
56# Overwritable environment Var's 100# Overwritable environment Var's
57# --------------------------------------- 101# ---------------------------------------
58KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" 102KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
59 103
60 104
61# Pulled from eutils as it might be more useful only being here since 105# Bug fixes
62# very few ebuilds which dont use this eclass will ever ever use these functions 106# fix to bug #75034
63set_arch_to_kernel() {
64 export PORTAGE_ARCH="${ARCH}"
65 case ${ARCH} in 107case ${ARCH} in
66 x86) export ARCH="i386";; 108 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
67 amd64) export ARCH="x86_64";; 109 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
68 hppa) export ARCH="parisc";;
69 mips) export ARCH="mips";;
70 *) export ARCH="${ARCH}";;
71 esac 110esac
72}
73 111
74# set's ARCH back to what portage expects 112# @FUNCTION: set_arch_to_kernel
75set_arch_to_portage() { 113# @DESCRIPTION:
76 export ARCH="${PORTAGE_ARCH}" 114# Set the env ARCH to match what the kernel expects.
77} 115set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
116# @FUNCTION: set_arch_to_portage
117# @DESCRIPTION:
118# Set the env ARCH to match what portage expects.
119set_arch_to_portage() { export ARCH=$(tc-arch); }
78 120
79
80#
81# qeinfo "Message" 121# qeinfo "Message"
82# ------------------- 122# -------------------
83# qeinfo is a queit einfo call when EBUILD_PHASE 123# qeinfo is a quiet einfo call when EBUILD_PHASE
84# should not have visible output. 124# should not have visible output.
85# 125qout() {
86qeinfo() {
87 local outputmsg 126 local outputmsg type
127 type=${1}
128 shift
88 outputmsg="${@}" 129 outputmsg="${@}"
89 case "${EBUILD_PHASE}" in 130 case "${EBUILD_PHASE}" in
90 depend) unset outputmsg;; 131 depend) unset outputmsg;;
91 clean) unset outputmsg;; 132 clean) unset outputmsg;;
92 preinst) unset outputmsg;; 133 preinst) unset outputmsg;;
93 esac 134 esac
94 [ -n "${outputmsg}" ] && einfo "${outputmsg}" 135 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
95} 136}
96 137
97qeerror() { 138qeinfo() { qout einfo "${@}" ; }
98 local outputmsg 139qeerror() { qout eerror "${@}" ; }
99 outputmsg="${@}"
100 case "${EBUILD_PHASE}" in
101 depend) unset outputmsg;;
102 clean) unset outputmsg;;
103 preinst) unset outputmsg;;
104 esac
105 [ -n "${outputmsg}" ] && einfo "${outputmsg}"
106}
107
108
109 140
110# File Functions 141# File Functions
111# --------------------------------------- 142# ---------------------------------------
112 143
113# getfilevar accepts 2 vars as follows: 144# @FUNCTION: getfilevar
114# getfilevar <VARIABLE> <CONFIGFILE> 145# @USAGE: variable configfile
115 146# @RETURN: the value of the variable
147# @DESCRIPTION:
148# It detects the value of the variable defined in the file configfile. This is
149# done by including the configfile, and printing the variable with Make.
150# It WILL break if your makefile has missing dependencies!
116getfilevar() { 151getfilevar() {
117local ERROR workingdir basefname basedname xarch 152local ERROR basefname basedname myARCH="${ARCH}"
118 ERROR=0 153 ERROR=0
119 154
120 [ -z "${1}" ] && ERROR=1 155 [ -z "${1}" ] && ERROR=1
121 [ ! -f "${2}" ] && ERROR=1 156 [ ! -f "${2}" ] && ERROR=1
122 157
123 if [ "${ERROR}" = 1 ] 158 if [ "${ERROR}" = 1 ]
124 then 159 then
125 ebeep
126 echo -e "\n" 160 echo -e "\n"
127 eerror "getfilevar requires 2 variables, with the second a valid file." 161 eerror "getfilevar requires 2 variables, with the second a valid file."
128 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 162 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
129 else 163 else
130 workingdir=${PWD}
131 basefname=$(basename ${2}) 164 basefname="$(basename ${2})"
132 basedname=$(dirname ${2}) 165 basedname="$(dirname ${2})"
133 xarch=${ARCH}
134 unset ARCH 166 unset ARCH
135
136 cd ${basedname}
137 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \
138 make -f - e 2>/dev/null
139 cd ${workingdir}
140
141 ARCH=${xarch}
142 fi
143}
144 167
168 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
169 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
170
171 ARCH=${myARCH}
172 fi
173}
174
175# @FUNCTION: getfilevar_noexec
176# @USAGE: variable configfile
177# @RETURN: the value of the variable
178# @DESCRIPTION:
179# It detects the value of the variable defined in the file configfile.
180# This is done with sed matching an expression only. If the variable is defined,
181# you will run into problems. See getfilevar for those cases.
182getfilevar_noexec() {
183local ERROR basefname basedname myARCH="${ARCH}"
184 ERROR=0
185
186 [ -z "${1}" ] && ERROR=1
187 [ ! -f "${2}" ] && ERROR=1
188
189 if [ "${ERROR}" = 1 ]
190 then
191 echo -e "\n"
192 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
193 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
194 else
195 sed -n \
196 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
197 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
198 s,[[:space:]]*\$,,g ;
199 p
200 }" \
201 "${2}"
202 fi
203}
204
205
206# @FUNCTION: linux_config_exists
207# @RETURN: true or false
208# @DESCRIPTION:
209# It returns true if .config exists otherwise false
210linux_config_exists() {
211 [ -s "${KV_OUT_DIR}/.config" ]
212}
213
214# @FUNCTION: require_configured_kernel
215# @DESCRIPTION:
216# This function verifies that the current kernel is configured (it checks against the existence of .config)
217# otherwise it dies.
218require_configured_kernel() {
219 if ! linux_config_exists; then
220 qeerror "Could not find a usable .config in the kernel source directory."
221 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
222 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
223 qeerror "it points to the necessary object directory so that it might find .config."
224 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
225 fi
226}
227
228# @FUNCTION: linux_chkconfig_present
229# @USAGE: option
230# @RETURN: true or false
231# @DESCRIPTION:
232# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
145linux_chkconfig_present() { 233linux_chkconfig_present() {
146local RESULT 234local RESULT
235 require_configured_kernel
147 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 236 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)"
148 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 237 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
149} 238}
150 239
240# @FUNCTION: linux_chkconfig_module
241# @USAGE: option
242# @RETURN: true or false
243# @DESCRIPTION:
244# It checks that CONFIG_<option>=m is present in the current kernel .config
151linux_chkconfig_module() { 245linux_chkconfig_module() {
152local RESULT 246local RESULT
247 require_configured_kernel
153 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 248 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)"
154 [ "${RESULT}" = "m" ] && return 0 || return 1 249 [ "${RESULT}" = "m" ] && return 0 || return 1
155} 250}
156 251
252# @FUNCTION: linux_chkconfig_builtin
253# @USAGE: option
254# @RETURN: true or false
255# @DESCRIPTION:
256# It checks that CONFIG_<option>=y is present in the current kernel .config
157linux_chkconfig_builtin() { 257linux_chkconfig_builtin() {
158local RESULT 258local RESULT
259 require_configured_kernel
159 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 260 RESULT="$(getfilevar_noexec CONFIG_${1} ${KV_OUT_DIR}/.config)"
160 [ "${RESULT}" = "y" ] && return 0 || return 1 261 [ "${RESULT}" = "y" ] && return 0 || return 1
161} 262}
162 263
264# @FUNCTION: linux_chkconfig_string
265# @USAGE: option
266# @RETURN: CONFIG_<option>
267# @DESCRIPTION:
268# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
163linux_chkconfig_string() { 269linux_chkconfig_string() {
270 require_configured_kernel
164 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 271 getfilevar_noexec "CONFIG_${1}" "${KV_OUT_DIR}/.config"
165} 272}
166 273
167# Versioning Functions 274# Versioning Functions
168# --------------------------------------- 275# ---------------------------------------
169 276
170# kernel_is returns true when the version is the same as the passed version 277# @FUNCTION: kernel_is
278# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
279# @RETURN: true or false
280# @DESCRIPTION:
281# It returns true when the current kernel version satisfies the comparison against the passed version.
282# -eq is the default comparison.
171# 283#
284# @CODE
172# For Example where KV = 2.6.9 285# For Example where KV = 2.6.9
173# kernel_is 2 4 returns false 286# kernel_is 2 4 returns false
174# kernel_is 2 returns true 287# kernel_is 2 returns true
175# kernel_is 2 6 returns true 288# kernel_is 2 6 returns true
176# kernel_is 2 6 8 returns false 289# kernel_is 2 6 8 returns false
177# kernel_is 2 6 9 returns true 290# kernel_is 2 6 9 returns true
178# 291# @CODE
292
179# got the jist yet? 293# got the jist yet?
180 294
181kernel_is() { 295kernel_is() {
182 # if we haven't determined the version yet, we need too. 296 # if we haven't determined the version yet, we need to.
183 get_version; 297 get_version
298 local operator test value x=0 y=0 z=0
299
300 case ${1} in
301 lt) operator="-lt"; shift;;
302 gt) operator="-gt"; shift;;
303 le) operator="-le"; shift;;
304 ge) operator="-ge"; shift;;
305 eq) operator="-eq"; shift;;
306 *) operator="-eq";;
307 esac
308
309 for x in ${@}; do
310 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
311 value="${value}${x}"
312 z=$((${z} + 1))
313
314 case ${z} in
315 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
316 test="${test}${KV_MAJOR}";;
317 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
318 test="${test}${KV_MINOR}";;
319 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
320 test="${test}${KV_PATCH}";;
321 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
322 esac
323 done
184 324
185 local RESULT operator value test 325 [ ${test} ${operator} ${value} ] && return 0 || return 1
186 RESULT=0
187
188 operator="-eq"
189 if [ "${1}" == "lt" ]
190 then
191 operator="-lt"
192 shift
193 elif [ "${1}" == "gt" ]
194 then
195 operator="-gt"
196 shift
197 elif [ "${1}" == "le" ]
198 then
199 operator="-le"
200 shift
201 elif [ "${1}" == "ge" ]
202 then
203 operator="-ge"
204 shift
205 fi
206
207 if [ -n "${1}" ]
208 then
209 [ ${KV_MAJOR} ${operator} ${1} ] || RESULT=1
210 fi
211 if [ -n "${2}" ]
212 then
213 [ ${KV_MINOR} ${operator} ${2} -a ${RESULT} -eq 0 ] || RESULT=1
214 fi
215 if [ -n "${3}" ]
216 then
217 [ ${KV_PATCH} ${operator} ${3} -a ${RESULT} -eq 0 ] || RESULT=1
218 fi
219 return ${RESULT}
220} 326}
221 327
328get_localversion() {
329 local lv_list i x
330
331 # ignore files with ~ in it.
332 for i in $(ls ${1}/localversion* 2>/dev/null); do
333 [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
334 done
335
336 for i in ${lv_list}; do
337 x="${x}$(<${i})"
338 done
339 x=${x/ /}
340 echo ${x}
341}
342
343# @FUNCTION: get_version
344# @DESCRIPTION:
345# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
346# (if KV_FULL is already set it does nothing).
347#
348# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
349#
350# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
351# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
352# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
222get_version() { 353get_version() {
223 local kbuild_output 354 local kbuild_output
224 355
225 # no need to execute this twice assuming KV_FULL is populated. 356 # no need to execute this twice assuming KV_FULL is populated.
226 # we can force by unsetting KV_FULL 357 # we can force by unsetting KV_FULL
227 [ -n "${KV_FULL}" ] && return 358 [ -n "${KV_FULL}" ] && return 0
228 359
229 # if we dont know KV_FULL, then we need too. 360 # if we dont know KV_FULL, then we need too.
230 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 361 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
231 unset KV_DIR 362 unset KV_DIR
232 363
233 # KV_DIR will contain the full path to the sources directory we should use 364 # KV_DIR will contain the full path to the sources directory we should use
234 qeinfo "Determining the location of the kernel source code" 365 qeinfo "Determining the location of the kernel source code"
235 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 366 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
236 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 367 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
237 368
238 if [ -z "${KV_DIR}" ] 369 if [ -z "${KV_DIR}" ]
239 then 370 then
240 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 371 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
241 qeinfo "This package requires Linux sources." 372 qeinfo "This package requires Linux sources."
242 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 373 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
244 qeinfo "(or the kernel you wish to build against)." 375 qeinfo "(or the kernel you wish to build against)."
245 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 376 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
246 else 377 else
247 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 378 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
248 fi 379 fi
249 die "Cannot locate Linux sources at ${KERNEL_DIR}" 380 return 1
250 fi 381 fi
251 382
252 qeinfo "Found kernel source directory:" 383 qeinfo "Found kernel source directory:"
253 qeinfo " ${KV_DIR}" 384 qeinfo " ${KV_DIR}"
254 385
255 if [ ! -s "${KV_DIR}/Makefile" ] 386 if [ ! -s "${KV_DIR}/Makefile" ]
256 then 387 then
257 qeerror "Could not find a Makefile in the kernel source directory." 388 qeerror "Could not find a Makefile in the kernel source directory."
258 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 389 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
259 die "Makefile not found in ${KV_DIR}" 390 return 1
260 fi 391 fi
261 392
262 # OK so now we know our sources directory, but they might be using 393 # OK so now we know our sources directory, but they might be using
263 # KBUILD_OUTPUT, and we need this for .config and localversions-* 394 # KBUILD_OUTPUT, and we need this for .config and localversions-*
264 # so we better find it eh? 395 # so we better find it eh?
265 # do we pass KBUILD_OUTPUT on the CLI? 396 # do we pass KBUILD_OUTPUT on the CLI?
266 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 397 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
267 398
268 # And if we didn't pass it, we can take a nosey in the Makefile 399 # And if we didn't pass it, we can take a nosey in the Makefile
269 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 400 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
270 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 401 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
271 402
272 # And contrary to existing functions I feel we shouldn't trust the 403 # And contrary to existing functions I feel we shouldn't trust the
273 # directory name to find version information as this seems insane. 404 # directory name to find version information as this seems insane.
274 # so we parse ${KV_DIR}/Makefile 405 # so we parse ${KV_DIR}/Makefile
275 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 406 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
276 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 407 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
277 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 408 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
278 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 409 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
279 410
280 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 411 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
281 then 412 then
282 qeerror "Could not detect kernel version." 413 qeerror "Could not detect kernel version."
283 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 414 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
284 die "Could not parse version info from ${KV_DIR}/Makefile" 415 return 1
285 fi 416 fi
286 417
287 # and in newer versions we can also pull LOCALVERSION if it is set. 418 # and in newer versions we can also pull LOCALVERSION if it is set.
288 # but before we do this, we need to find if we use a different object directory. 419 # but before we do this, we need to find if we use a different object directory.
289 # This *WILL* break if the user is using localversions, but we assume it was 420 # This *WILL* break if the user is using localversions, but we assume it was
290 # caught before this if they are. 421 # caught before this if they are.
291 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 422 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
292 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" 423 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
293 424
294 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 425 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
295 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 426 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
296 if [ -n "${KV_OUT_DIR}" ]; 427 if [ -n "${KV_OUT_DIR}" ];
297 then 428 then
298 qeinfo "Found kernel object directory:" 429 qeinfo "Found kernel object directory:"
299 qeinfo " ${KV_OUT_DIR}" 430 qeinfo " ${KV_OUT_DIR}"
300 431
301 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)" 432 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
302 fi 433 fi
303 # and if we STILL haven't got it, then we better just set it to KV_DIR 434 # and if we STILL have not got it, then we better just set it to KV_DIR
304 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 435 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
305 436
306 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)" 437 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
438 if linux_config_exists; then
307 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 439 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
308 KV_LOCAL="${KV_LOCAL//\"/}" 440 KV_LOCAL="${KV_LOCAL//\"/}"
309 441
442 # For things like git that can append extra stuff:
443 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
444 linux_chkconfig_builtin LOCALVERSION_AUTO &&
445 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
446 fi
447
310 # And we should set KV_FULL to the full expanded version 448 # And we should set KV_FULL to the full expanded version
311 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 449 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
312 450
313 qeinfo "Found sources for kernel version:" 451 qeinfo "Found sources for kernel version:"
314 qeinfo " ${KV_FULL}" 452 qeinfo " ${KV_FULL}"
315
316 if [ ! -s "${KV_OUT_DIR}/.config" ]
317 then
318 qeerror "Could not find a usable .config in the kernel source directory."
319 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
320 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
321 qeerror "it points to the necessary object directory so that it might find .config."
322 die ".config not found in ${KV_OUT_DIR}"
323 fi
324}
325 453
454 return 0
455}
326 456
457# @FUNCTION: get_running_version
458# @DESCRIPTION:
459# It gets the version of the current running kernel and the result is the same as get_version() if the
460# function can find the sources.
461get_running_version() {
462 KV_FULL=$(uname -r)
463
464 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
465 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
466 unset KV_FULL
467 get_version
468 return $?
469 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
470 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
471 unset KV_FULL
472 get_version
473 return $?
474 else
475 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
476 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
477 KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
478 KV_PATCH=${KV_PATCH//-*}
479 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
480 && KV_EXTRA="-${KV_FULL#*-}"
481 fi
482 return 0
483}
327 484
328 485
329# ebuild check functions 486# ebuild check functions
330# --------------------------------------- 487# ---------------------------------------
331 488
489# @FUNCTION: check_kernel_built
490# @DESCRIPTION:
491# This function verifies that the current kernel sources have been already prepared otherwise it dies.
332check_kernel_built() { 492check_kernel_built() {
333 # if we haven't determined the version yet, we need too. 493 # if we haven't determined the version yet, we need to
494 require_configured_kernel
334 get_version; 495 get_version
335 496
336 if [ ! -f "${KV_OUT_DIR}/System.map" ] 497 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
337 then 498 then
338 eerror "These sources have not yet been compiled." 499 eerror "These sources have not yet been prepared."
339 eerror "We cannot build against an uncompiled tree." 500 eerror "We cannot build against an unprepared tree."
340 eerror "To resolve this, please type the following:" 501 eerror "To resolve this, please type the following:"
341 eerror 502 eerror
342 eerror "# cd ${KV_DIR}" 503 eerror "# cd ${KV_DIR}"
343 eerror "# make oldconfig" 504 eerror "# make oldconfig"
344 eerror "# make bzImage modules modules_install" 505 eerror "# make modules_prepare"
345 eerror 506 eerror
346 eerror "Then please try merging this module again." 507 eerror "Then please try merging this module again."
347 die "Kernel sources need compiling first" 508 die "Kernel sources need compiling first"
348 fi 509 fi
349} 510}
350 511
512# @FUNCTION: check_modules_supported
513# @DESCRIPTION:
514# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
351check_modules_supported() { 515check_modules_supported() {
352 # if we haven't determined the version yet, we need too. 516 # if we haven't determined the version yet, we need too.
517 require_configured_kernel
353 get_version; 518 get_version
354 519
355 if ! linux_chkconfig_builtin "MODULES" 520 if ! linux_chkconfig_builtin "MODULES"
356 then 521 then
357 eerror "These sources do not support loading external modules." 522 eerror "These sources do not support loading external modules."
358 eerror "to be able to use this module please enable \"Loadable modules support\"" 523 eerror "to be able to use this module please enable \"Loadable modules support\""
359 eerror "in your kernel, recompile and then try merging this module again." 524 eerror "in your kernel, recompile and then try merging this module again."
360 die "No support for external modules in ${KV_FULL} config" 525 die "No support for external modules in ${KV_FULL} config"
361 fi 526 fi
362} 527}
363 528
529# @FUNCTION: check_extra_config
530# @DESCRIPTION:
531# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
532# the prefix ~ is not used) doesn't satisfy the directive.
364check_extra_config() { 533check_extra_config() {
365local config negate error local_error 534 local config negate die error reworkmodulenames
535 local soft_errors_count=0 hard_errors_count=0 config_required=0
366 536
367 # if we haven't determined the version yet, we need too. 537 # if we haven't determined the version yet, we need to
368 get_version; 538 get_version
369 539
370 einfo "Checking for suitable kernel configuration options" 540 # Determine if we really need a .config. The only time when we don't need
541 # one is when all of the CONFIG_CHECK options are prefixed with "~".
371 for config in ${CONFIG_CHECK} 542 for config in ${CONFIG_CHECK}
372 do 543 do
373 negate="${config:0:1}" 544 if [[ "${config:0:1}" != "~" ]]; then
374 if [ "${negate}" == "!" ]; 545 config_required=1
375 then 546 break
547 fi
548 done
549
550 if [[ ${config_required} == 0 ]]; then
551 # In the case where we don't require a .config, we can now bail out
552 # if the user has no .config as there is nothing to do. Otherwise
553 # code later will cause a failure due to missing .config.
554 if ! linux_config_exists; then
555 ewarn "Unable to check for the following kernel config options due"
556 ewarn "to absence of any configured kernel sources:"
557 for config in ${CONFIG_CHECK}; do
558 ewarn " - ${config#\~}"
559 done
560 ewarn "You're on your own to make sure they are set if needed."
561 return 0
562 fi
563 else
564 require_configured_kernel
565 fi
566
567 einfo "Checking for suitable kernel configuration options..."
568
569 for config in ${CONFIG_CHECK}
570 do
571 # if we specify any fatal, ensure we honor them
572 die=1
573 error=0
574 negate=0
575 reworkmodulenames=0
576
577 if [[ ${config:0:1} == "~" ]]; then
578 die=0
376 config="${config:1}" 579 config=${config:1}
580 elif [[ ${config:0:1} == "@" ]]; then
581 die=0
582 reworkmodulenames=1
583 config=${config:1}
584 fi
585 if [[ ${config:0:1} == "!" ]]; then
586 negate=1
587 config=${config:1}
588 fi
589
590 if [[ ${negate} == 1 ]]; then
591 linux_chkconfig_present ${config} && error=2
592 elif [[ ${reworkmodulenames} == 1 ]]; then
593 local temp_config="${config//*:}" i n
594 config="${config//:*}"
377 if linux_chkconfig_present ${config} 595 if linux_chkconfig_present ${config}; then
378 then 596 for i in ${MODULE_NAMES}; do
597 n="${i//${temp_config}}"
598 [[ -z ${n//\(*} ]] && \
599 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
600 done
601 error=2
602 fi
603 else
604 linux_chkconfig_present ${config} || error=1
605 fi
606
607 if [[ ${error} > 0 ]]; then
608 local report_func="eerror" local_error
609 local_error="ERROR_${config}"
610 local_error="${!local_error}"
611
612 if [[ -z "${local_error}" ]]; then
613 # using old, deprecated format.
379 local_error="${config}_ERROR" 614 local_error="${config}_ERROR"
380 local_error="${!local_error}" 615 local_error="${!local_error}"
381 [ -n "${local_error}" ] && eerror " ${local_error}" || \
382 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is."
383 error=1
384 fi 616 fi
385 else 617 if [[ ${die} == 0 && -z "${local_error}" ]]; then
386 if ! linux_chkconfig_present ${config} 618 #soft errors can be warnings
387 then
388 local_error="${config}_ERROR" 619 local_error="WARNING_${config}"
389 local_error="${!local_error}" 620 local_error="${!local_error}"
390 [ -n "${local_error}" ] && eerror " ${local_error}" || \ 621 if [[ -n "${local_error}" ]] ; then
391 eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't" 622 report_func="ewarn"
392 error=1 623 fi
393 fi 624 fi
625
626 if [[ -z "${local_error}" ]]; then
627 [[ ${error} == 1 ]] \
628 && local_error="is not set when it should be." \
629 || local_error="should not be set. But it is."
630 local_error="CONFIG_${config}:\t ${local_error}"
631 fi
632 if [[ ${die} == 0 ]]; then
633 ${report_func} " ${local_error}"
634 soft_errors_count=$[soft_errors_count + 1]
635 else
636 ${report_func} " ${local_error}"
637 hard_errors_count=$[hard_errors_count + 1]
638 fi
394 fi 639 fi
395 done 640 done
396 641
397 if [ -n "${error}" ] ; 642 if [[ ${hard_errors_count} > 0 ]]; then
398 then
399 eerror "Please check to make sure these options are set correctly." 643 eerror "Please check to make sure these options are set correctly."
644 eerror "Failure to do so may cause unexpected problems."
400 eerror "Once you have satisfied these options, please try merging" 645 eerror "Once you have satisfied these options, please try merging"
401 eerror "this package again." 646 eerror "this package again."
402 die "Incorrect kernel configuration options" 647 die "Incorrect kernel configuration options"
648 elif [[ ${soft_errors_count} > 0 ]]; then
649 ewarn "Please check to make sure these options are set correctly."
650 ewarn "Failure to do so may cause unexpected problems."
651 else
652 eend 0
403 fi 653 fi
404} 654}
405 655
406check_zlibinflate() { 656check_zlibinflate() {
407 # if we haven't determined the version yet, we need too. 657 # if we haven't determined the version yet, we need to
658 require_configured_kernel
408 get_version; 659 get_version
409 660
410 # although I restructured this code - I really really really dont support it! 661 # although I restructured this code - I really really really dont support it!
411 662
412 # bug #27882 - zlib routines are only linked into the kernel 663 # bug #27882 - zlib routines are only linked into the kernel
413 # if something compiled into the kernel calls them 664 # if something compiled into the kernel calls them
414 # 665 #
415 # plus, for the cloop module, it appears that there's no way 666 # plus, for the cloop module, it appears that there's no way
416 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS 667 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
417 # is on 668 # is on
418 669
419local INFLATE 670 local INFLATE
420local DEFLATE 671 local DEFLATE
421 672
422 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 673 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
423 674
424 ebegin "checking ZLIB_INFLATE" 675 ebegin "checking ZLIB_INFLATE"
425 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 676 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
426 eend $? 677 eend $?
427 [ "$?" != 0 ] && die 678 [ "$?" != 0 ] && die
428 679
429 ebegin "checking ZLIB_DEFLATE" 680 ebegin "checking ZLIB_DEFLATE"
430 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 681 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
431 eend $? 682 eend $?
432 [ "$?" != 0 ] && die 683 [ "$?" != 0 ] && die
433 684
434
435 local LINENO_START 685 local LINENO_START
436 local LINENO_END 686 local LINENO_END
437 local SYMBOLS 687 local SYMBOLS
438 local x 688 local x
439 689
440 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 690 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
441 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" 691 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
442 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 692 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
443 (( LINENO_END = $LINENO_END - 1 )) 693 (( LINENO_END = $LINENO_END - 1 ))
444 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" 694 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
450 # we have a winner! 700 # we have a winner!
451 einfo "${x} ensures zlib is linked into your kernel - excellent" 701 einfo "${x} ensures zlib is linked into your kernel - excellent"
452 return 0 702 return 0
453 fi 703 fi
454 done 704 done
455 705
456 eerror 706 eerror
457 eerror "This kernel module requires ZLIB library support." 707 eerror "This kernel module requires ZLIB library support."
458 eerror "You have enabled zlib support in your kernel, but haven't enabled" 708 eerror "You have enabled zlib support in your kernel, but haven't enabled"
459 eerror "enabled any option that will ensure that zlib is linked into your" 709 eerror "enabled any option that will ensure that zlib is linked into your"
460 eerror "kernel." 710 eerror "kernel."
474} 724}
475 725
476################################ 726################################
477# Default pkg_setup 727# Default pkg_setup
478# Also used when inheriting linux-mod to force a get_version call 728# Also used when inheriting linux-mod to force a get_version call
479 729# @FUNCTION: linux-info_pkg_setup
730# @DESCRIPTION:
731# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
732# to support the options specified in CONFIG_CHECK (if not null)
480linux-info_pkg_setup() { 733linux-info_pkg_setup() {
481 get_version; 734 get_version || die "Unable to calculate Linux Kernel version"
735
736 if kernel_is 2 4; then
737 if [ "$( gcc-major-version )" -eq "4" ] ; then
738 echo
739 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
740 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
741 echo
742 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
743 ewarn "newer kernel that supports gcc-4."
744 echo
745 ewarn "Also be aware that bugreports about gcc-4 not working"
746 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
747 echo
748 epause 10
749 fi
750 fi
751
482 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 752 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
483} 753}

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