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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 1.24 2005/04/12 12:28:14 johnm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.63 2009/09/06 23:04:37 robbat2 Exp $
4# 4#
5# Description: This eclass is used as a central eclass for accessing kernel
6# related information for sources already installed.
7# It is vital for linux-mod to function correctly, and is split
8# out so that any ebuild behaviour "templates" are abstracted out
9# using additional eclasses.
10#
11# Maintainer: John Mylchreest <johnm@gentoo.org> 5# Original author: John Mylchreest <johnm@gentoo.org>
12# Copyright 2004 Gentoo Linux 6# Maintainer: kernel-misc@gentoo.org
13# 7#
14# Please direct your bugs to the current eclass maintainer :) 8# Please direct your bugs to the current eclass maintainer :)
9
10# @ECLASS: linux-info.eclass
11# @MAINTAINER:
12# kernel-misc@gentoo.org
13# @BLURB: eclass used for accessing kernel related information
14# @DESCRIPTION:
15# This eclass is used as a central eclass for accessing kernel
16# related information for source or binary already installed.
17# It is vital for linux-mod.eclass to function correctly, and is split
18# out so that any ebuild behaviour "templates" are abstracted out
19# using additional eclasses.
20#
21# "kernel config" in this file means:
22# The .config of the currently installed sources is used as the first
23# preference, with a fall-back to bundled config (/proc/config.gz) if available.
15 24
16# A Couple of env vars are available to effect usage of this eclass 25# A Couple of env vars are available to effect usage of this eclass
17# These are as follows: 26# These are as follows:
18# 27
19# Env Var Option Description 28# @ECLASS-VARIABLE: KERNEL_DIR
20# KERNEL_DIR <string> The directory containing kernel the target kernel 29# @DESCRIPTION:
21# sources. 30# A string containing the directory of the target kernel sources. The default value is
31# "/usr/src/linux"
32
33# @ECLASS-VARIABLE: CONFIG_CHECK
34# @DESCRIPTION:
22# CONFIG_CHECK <string> a list of .config options to check for before 35# A string containing a list of .config options to check for before
23# proceeding with the install. ie: CONFIG_CHECK="MTRR" 36# proceeding with the install.
37#
38# e.g.: CONFIG_CHECK="MTRR"
39#
24# You can also check that an option doesn't exist by 40# You can also check that an option doesn't exist by
25# prepending it with an exclamation mark (!). 41# prepending it with an exclamation mark (!).
42#
26# ie: CONFIG_CHECK="!MTRR" 43# e.g.: CONFIG_CHECK="!MTRR"
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.
103
104# @ECLASS-VARIABLE: I_KNOW_WHAT_I_AM_DOING
105# @DESCRIPTION:
106# Temporary variable for the migration to making linux-info non-fatal.
50 107
51# And to ensure all the weirdness with crosscompile 108# And to ensure all the weirdness with crosscompile
52inherit toolchain-funcs versionator 109inherit toolchain-funcs versionator
53 110
54ECLASS=linux-info
55INHERITED="$INHERITED $ECLASS"
56EXPORT_FUNCTIONS pkg_setup 111EXPORT_FUNCTIONS pkg_setup
112
113DEPEND="kernel_linux? ( virtual/linux-sources )"
114RDEPEND=""
57 115
58# Overwritable environment Var's 116# Overwritable environment Var's
59# --------------------------------------- 117# ---------------------------------------
60KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 118KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
61 119
62 120
63# Bug fixes 121# Bug fixes
64# fix to bug #75034 122# fix to bug #75034
65case ${ARCH} in 123case ${ARCH} in
66 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 124 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
67 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 125 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
68esac 126esac
69 127
70# These are legacy wrappers for toolchain-funcs. 128# @FUNCTION: set_arch_to_kernel
71# I dont like them here, but oh well. 129# @DESCRIPTION:
130# Set the env ARCH to match what the kernel expects.
72set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 131set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
132# @FUNCTION: set_arch_to_portage
133# @DESCRIPTION:
134# Set the env ARCH to match what portage expects.
73set_arch_to_portage() { export ARCH="$(tc-arch)"; } 135set_arch_to_portage() { export ARCH=$(tc-arch); }
74 136
75# qeinfo "Message" 137# qeinfo "Message"
76# ------------------- 138# -------------------
77# qeinfo is a quiet einfo call when EBUILD_PHASE 139# qeinfo is a quiet einfo call when EBUILD_PHASE
78# should not have visible output. 140# should not have visible output.
79qout() { 141qout() {
80 local outputmsg type 142 local outputmsg type
81 type=${1} 143 type=${1}
82 shift 144 shift
83 outputmsg="${@}" 145 outputmsg="${@}"
84 case "${EBUILD_PHASE}" in 146 case "${EBUILD_PHASE}" in
85 depend) unset outputmsg;; 147 depend) unset outputmsg;;
86 clean) unset outputmsg;; 148 clean) unset outputmsg;;
87 preinst) unset outputmsg;; 149 preinst) unset outputmsg;;
88 esac 150 esac
89 [ -n "${outputmsg}" ] && ${type} "${outputmsg}" 151 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
90} 152}
91 153
92qeinfo() { qout einfo "${@}" ; } 154qeinfo() { qout einfo "${@}" ; }
93qeerror() { qout eerror "${@}" ; } 155qeerror() { qout eerror "${@}" ; }
94 156
95# File Functions 157# File Functions
96# --------------------------------------- 158# ---------------------------------------
97 159
98# getfilevar accepts 2 vars as follows: 160# @FUNCTION: getfilevar
99# getfilevar <VARIABLE> <CONFIGFILE> 161# @USAGE: variable configfile
100 162# @RETURN: the value of the variable
163# @DESCRIPTION:
164# It detects the value of the variable defined in the file configfile. This is
165# done by including the configfile, and printing the variable with Make.
166# It WILL break if your makefile has missing dependencies!
101getfilevar() { 167getfilevar() {
102local ERROR workingdir basefname basedname myARCH="${ARCH}" 168local ERROR basefname basedname myARCH="${ARCH}"
103 ERROR=0 169 ERROR=0
104 170
105 [ -z "${1}" ] && ERROR=1 171 [ -z "${1}" ] && ERROR=1
106 [ ! -f "${2}" ] && ERROR=1 172 [ ! -f "${2}" ] && ERROR=1
107 173
109 then 175 then
110 echo -e "\n" 176 echo -e "\n"
111 eerror "getfilevar requires 2 variables, with the second a valid file." 177 eerror "getfilevar requires 2 variables, with the second a valid file."
112 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 178 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
113 else 179 else
114 workingdir=${PWD}
115 basefname=$(basename ${2}) 180 basefname="$(basename ${2})"
116 basedname=$(dirname ${2}) 181 basedname="$(dirname ${2})"
117 unset ARCH 182 unset ARCH
118 183
119 cd ${basedname} 184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
120 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ 185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
121 make ${BUILD_FIXES} -s -f - e 2>/dev/null
122 cd ${workingdir}
123 186
124 ARCH=${myARCH} 187 ARCH=${myARCH}
125 fi 188 fi
126} 189}
127 190
191# @FUNCTION: getfilevar_noexec
192# @USAGE: variable configfile
193# @RETURN: the value of the variable
194# @DESCRIPTION:
195# It detects the value of the variable defined in the file configfile.
196# This is done with sed matching an expression only. If the variable is defined,
197# you will run into problems. See getfilevar for those cases.
198getfilevar_noexec() {
199 local ERROR basefname basedname mycat myARCH="${ARCH}"
200 ERROR=0
201 mycat='cat'
202
203 [ -z "${1}" ] && ERROR=1
204 [ ! -f "${2}" ] && ERROR=1
205 [ "${2#.gz}" != "${2}" ] && mycat='zcat'
206
207 if [ "${ERROR}" = 1 ]
208 then
209 echo -e "\n"
210 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
211 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
212 else
213 ${mycat} "${2}" | \
214 sed -n \
215 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
216 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
217 s,[[:space:]]*\$,,g ;
218 p
219 }"
220 fi
221}
222
223
224# @FUNCTION: linux_config_src_exists
225# @RETURN: true or false
226# @DESCRIPTION:
227# It returns true if .config exists in a build directory otherwise false
228linux_config_src_exists() {
229 [ -s "${KV_OUT_DIR}/.config" ]
230}
231
232# @FUNCTION: linux_config_bin_exists
233# @RETURN: true or false
234# @DESCRIPTION:
235# It returns true if .config exists in /proc, otherwise false
236linux_config_bin_exists() {
237 [ -s "/proc/config.gz" ]
238}
239
240# @FUNCTION: linux_config_exists
241# @RETURN: true or false
242# @DESCRIPTION:
243# It returns true if .config exists otherwise false
244#
245# This function MUST be checked before using any of the linux_chkconfig_*
246# functions.
247linux_config_exists() {
248 linux_config_src_exists || linux_config_bin_exists
249}
250
251# @FUNCTION: require_configured_kernel
252# @DESCRIPTION:
253# This function verifies that the current kernel is configured (it checks against the existence of .config)
254# otherwise it dies.
255require_configured_kernel() {
256 if ! linux_config_src_exists; then
257 qeerror "Could not find a usable .config in the kernel source directory."
258 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
259 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
260 qeerror "it points to the necessary object directory so that it might find .config."
261 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
262 fi
263}
264
265# @FUNCTION: linux_chkconfig_present
266# @USAGE: option
267# @RETURN: true or false
268# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first.
128linux_chkconfig_present() { 272linux_chkconfig_present() {
129local RESULT 273local RESULT
274 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
275 local config
276 config="${KV_OUT_DIR}/.config"
277 [ ! -f "${config}" ] && config="/proc/config.gz"
130 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
131 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
132} 280}
133 281
282# @FUNCTION: linux_chkconfig_module
283# @USAGE: option
284# @RETURN: true or false
285# @DESCRIPTION:
286# It checks that CONFIG_<option>=m is present in the current kernel .config
287# If linux_config_exists returns false, the results of this are UNDEFINED. You
288# MUST call linux_config_exists first.
134linux_chkconfig_module() { 289linux_chkconfig_module() {
135local RESULT 290local RESULT
291 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
292 local config
293 config="${KV_OUT_DIR}/.config"
294 [ ! -f "${config}" ] && config="/proc/config.gz"
136 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
137 [ "${RESULT}" = "m" ] && return 0 || return 1 296 [ "${RESULT}" = "m" ] && return 0 || return 1
138} 297}
139 298
299# @FUNCTION: linux_chkconfig_builtin
300# @USAGE: option
301# @RETURN: true or false
302# @DESCRIPTION:
303# It checks that CONFIG_<option>=y is present in the current kernel .config
304# If linux_config_exists returns false, the results of this are UNDEFINED. You
305# MUST call linux_config_exists first.
140linux_chkconfig_builtin() { 306linux_chkconfig_builtin() {
141local RESULT 307local RESULT
308 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
309 local config
310 config="${KV_OUT_DIR}/.config"
311 [ ! -f "${config}" ] && config="/proc/config.gz"
142 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
143 [ "${RESULT}" = "y" ] && return 0 || return 1 313 [ "${RESULT}" = "y" ] && return 0 || return 1
144} 314}
145 315
316# @FUNCTION: linux_chkconfig_string
317# @USAGE: option
318# @RETURN: CONFIG_<option>
319# @DESCRIPTION:
320# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
321# If linux_config_exists returns false, the results of this are UNDEFINED. You
322# MUST call linux_config_exists first.
146linux_chkconfig_string() { 323linux_chkconfig_string() {
324 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
325 local config
326 config="${KV_OUT_DIR}/.config"
327 [ ! -f "${config}" ] && config="/proc/config.gz"
147 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 328 getfilevar_noexec "CONFIG_${1}" "${config}"
148} 329}
149 330
150# Versioning Functions 331# Versioning Functions
151# --------------------------------------- 332# ---------------------------------------
152 333
153# kernel_is returns true when the version is the same as the passed version 334# @FUNCTION: kernel_is
335# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
336# @RETURN: true or false
337# @DESCRIPTION:
338# It returns true when the current kernel version satisfies the comparison against the passed version.
339# -eq is the default comparison.
154# 340#
341# @CODE
155# For Example where KV = 2.6.9 342# For Example where KV = 2.6.9
156# kernel_is 2 4 returns false 343# kernel_is 2 4 returns false
157# kernel_is 2 returns true 344# kernel_is 2 returns true
158# kernel_is 2 6 returns true 345# kernel_is 2 6 returns true
159# kernel_is 2 6 8 returns false 346# kernel_is 2 6 8 returns false
160# kernel_is 2 6 9 returns true 347# kernel_is 2 6 9 returns true
161# 348# @CODE
349
162# got the jist yet? 350# got the jist yet?
163 351
164kernel_is() { 352kernel_is() {
165 # if we haven't determined the version yet, we need too. 353 # if we haven't determined the version yet, we need to.
166 get_version; 354 get_version
167 local operator test value x=0 y=0 z=0 355 local operator test value x=0 y=0 z=0
168 356
169 case ${1} in 357 case ${1} in
170 lt) operator="-lt"; shift;; 358 lt) operator="-lt"; shift;;
171 gt) operator="-gt"; shift;; 359 gt) operator="-gt"; shift;;
188 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 376 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
189 test="${test}${KV_PATCH}";; 377 test="${test}${KV_PATCH}";;
190 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 378 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
191 esac 379 esac
192 done 380 done
193 381
194 [ ${test} ${operator} ${value} ] && return 0 || return 1 382 [ ${test} ${operator} ${value} ] && return 0 || return 1
195} 383}
196 384
385get_localversion() {
386 local lv_list i x
387
388 # ignore files with ~ in it.
389 for i in $(ls ${1}/localversion* 2>/dev/null); do
390 [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
391 done
392
393 for i in ${lv_list}; do
394 x="${x}$(<${i})"
395 done
396 x=${x/ /}
397 echo ${x}
398}
399
400# internal variable, so we know to only print the warning once
401get_version_warning_done=
402
403# @FUNCTION: get_version
404# @DESCRIPTION:
405# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
406# (if KV_FULL is already set it does nothing).
407#
408# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
409#
410# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
411# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
412# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
197get_version() { 413get_version() {
198 local kbuild_output 414 local kbuild_output
199 415
200 # no need to execute this twice assuming KV_FULL is populated. 416 # no need to execute this twice assuming KV_FULL is populated.
201 # we can force by unsetting KV_FULL 417 # we can force by unsetting KV_FULL
202 [ -n "${KV_FULL}" ] && return 0 418 [ -n "${KV_FULL}" ] && return 0
203 419
204 # if we dont know KV_FULL, then we need too. 420 # if we dont know KV_FULL, then we need too.
205 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 421 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
206 unset KV_DIR 422 unset KV_DIR
207 423
208 # KV_DIR will contain the full path to the sources directory we should use 424 # KV_DIR will contain the full path to the sources directory we should use
425 [ -z "${get_version_warning_done}" ] && \
209 qeinfo "Determining the location of the kernel source code" 426 qeinfo "Determining the location of the kernel source code"
210 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 427 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
211 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 428 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
212 429
213 if [ -z "${KV_DIR}" ] 430 if [ -z "${KV_DIR}" ]
214 then 431 then
432 if [ -z "${get_version_warning_done}" ]; then
433 get_version_warning_done=1
215 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 434 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
216 qeinfo "This package requires Linux sources." 435 #qeinfo "This package requires Linux sources."
217 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 436 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
218 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 437 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
219 qeinfo "(or the kernel you wish to build against)." 438 qeinfo "(or the kernel you wish to build against)."
220 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 439 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
221 else 440 else
222 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 441 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
442 fi
223 fi 443 fi
224 return 1 444 return 1
225 fi 445 fi
226 446
447 if [ -z "${get_version_warning_done}" ]; then
227 qeinfo "Found kernel source directory:" 448 qeinfo "Found kernel source directory:"
228 qeinfo " ${KV_DIR}" 449 qeinfo " ${KV_DIR}"
450 fi
229 451
230 if [ ! -s "${KV_DIR}/Makefile" ] 452 if [ ! -s "${KV_DIR}/Makefile" ]
231 then 453 then
454 if [ -z "${get_version_warning_done}" ]; then
455 get_version_warning_done=1
232 qeerror "Could not find a Makefile in the kernel source directory." 456 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" 457 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
458 fi
234 return 1 459 return 1
235 fi 460 fi
236 461
237 # OK so now we know our sources directory, but they might be using 462 # OK so now we know our sources directory, but they might be using
238 # KBUILD_OUTPUT, and we need this for .config and localversions-* 463 # KBUILD_OUTPUT, and we need this for .config and localversions-*
239 # so we better find it eh? 464 # so we better find it eh?
240 # do we pass KBUILD_OUTPUT on the CLI? 465 # do we pass KBUILD_OUTPUT on the CLI?
241 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 466 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
242 467
243 # And if we didn't pass it, we can take a nosey in the Makefile 468 # And if we didn't pass it, we can take a nosey in the Makefile
244 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 469 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
245 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 470 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
246 471
247 # And contrary to existing functions I feel we shouldn't trust the 472 # And contrary to existing functions I feel we shouldn't trust the
248 # directory name to find version information as this seems insane. 473 # directory name to find version information as this seems insane.
249 # so we parse ${KV_DIR}/Makefile 474 # so we parse ${KV_DIR}/Makefile
250 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 475 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
251 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 476 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
252 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 477 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
253 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 478 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
254 479
255 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 480 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
256 then 481 then
482 if [ -z "${get_version_warning_done}" ]; then
483 get_version_warning_done=1
257 qeerror "Could not detect kernel version." 484 qeerror "Could not detect kernel version."
258 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 485 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
486 fi
259 return 1 487 return 1
260 fi 488 fi
261 489
262 # and in newer versions we can also pull LOCALVERSION if it is set. 490 # and in newer versions we can also pull LOCALVERSION if it is set.
263 # but before we do this, we need to find if we use a different object directory. 491 # but before we do this, we need to find if we use a different object directory.
264 # This *WILL* break if the user is using localversions, but we assume it was 492 # This *WILL* break if the user is using localversions, but we assume it was
265 # caught before this if they are. 493 # caught before this if they are.
266 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 494 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
267 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" 495 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
268 496
269 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 497 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
270 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 498 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
271 if [ -n "${KV_OUT_DIR}" ]; 499 if [ -n "${KV_OUT_DIR}" ];
272 then 500 then
273 qeinfo "Found kernel object directory:" 501 qeinfo "Found kernel object directory:"
274 qeinfo " ${KV_OUT_DIR}" 502 qeinfo " ${KV_OUT_DIR}"
275 503
276 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)" 504 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
277 fi 505 fi
278 # and if we STILL haven't got it, then we better just set it to KV_DIR 506 # and if we STILL have not got it, then we better just set it to KV_DIR
279 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 507 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
280 508
281 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)" 509 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
510 if linux_config_exists; then
282 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 511 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
283 KV_LOCAL="${KV_LOCAL//\"/}" 512 KV_LOCAL="${KV_LOCAL//\"/}"
513
514 # For things like git that can append extra stuff:
515 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
516 linux_chkconfig_builtin LOCALVERSION_AUTO &&
517 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
518 fi
284 519
285 # And we should set KV_FULL to the full expanded version 520 # And we should set KV_FULL to the full expanded version
286 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 521 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
287 522
288 qeinfo "Found sources for kernel version:" 523 qeinfo "Found sources for kernel version:"
289 qeinfo " ${KV_FULL}" 524 qeinfo " ${KV_FULL}"
290 525
291 if [ ! -s "${KV_OUT_DIR}/.config" ]
292 then
293 qeerror "Could not find a usable .config in the kernel source directory."
294 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
295 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
296 qeerror "it points to the necessary object directory so that it might find .config."
297 return 1
298 fi
299
300 return 0 526 return 0
301} 527}
302 528
529# @FUNCTION: get_running_version
530# @DESCRIPTION:
531# It gets the version of the current running kernel and the result is the same as get_version() if the
532# function can find the sources.
303get_running_version() { 533get_running_version() {
304 KV_FULL=$(uname -r) 534 KV_FULL=$(uname -r)
305 535
306 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 536 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
307 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 537 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
326 556
327 557
328# ebuild check functions 558# ebuild check functions
329# --------------------------------------- 559# ---------------------------------------
330 560
561# @FUNCTION: check_kernel_built
562# @DESCRIPTION:
563# This function verifies that the current kernel sources have been already prepared otherwise it dies.
331check_kernel_built() { 564check_kernel_built() {
332 # if we haven't determined the version yet, we need too. 565 # if we haven't determined the version yet, we need to
566 require_configured_kernel
333 get_version; 567 get_version
334 568
335 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 569 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
336 then 570 then
337 eerror "These sources have not yet been prepared." 571 eerror "These sources have not yet been prepared."
338 eerror "We cannot build against an unprepared tree." 572 eerror "We cannot build against an unprepared tree."
339 eerror "To resolve this, please type the following:" 573 eerror "To resolve this, please type the following:"
345 eerror "Then please try merging this module again." 579 eerror "Then please try merging this module again."
346 die "Kernel sources need compiling first" 580 die "Kernel sources need compiling first"
347 fi 581 fi
348} 582}
349 583
584# @FUNCTION: check_modules_supported
585# @DESCRIPTION:
586# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
350check_modules_supported() { 587check_modules_supported() {
351 # if we haven't determined the version yet, we need too. 588 # if we haven't determined the version yet, we need too.
589 require_configured_kernel
352 get_version; 590 get_version
353 591
354 if ! linux_chkconfig_builtin "MODULES" 592 if ! linux_chkconfig_builtin "MODULES"
355 then 593 then
356 eerror "These sources do not support loading external modules." 594 eerror "These sources do not support loading external modules."
357 eerror "to be able to use this module please enable \"Loadable modules support\"" 595 eerror "to be able to use this module please enable \"Loadable modules support\""
358 eerror "in your kernel, recompile and then try merging this module again." 596 eerror "in your kernel, recompile and then try merging this module again."
359 die "No support for external modules in ${KV_FULL} config" 597 die "No support for external modules in ${KV_FULL} config"
360 fi 598 fi
361} 599}
362 600
601# @FUNCTION: check_extra_config
602# @DESCRIPTION:
603# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
604# the prefix ~ is not used) doesn't satisfy the directive.
363check_extra_config() { 605check_extra_config() {
364 local config negate error local_error i n temp_config 606 local config negate die error reworkmodulenames
607 local soft_errors_count=0 hard_errors_count=0 config_required=0
365 608
366 # if we haven't determined the version yet, we need too. 609 # if we haven't determined the version yet, we need to
367 get_version; 610 get_version
368 611
369 einfo "Checking for suitable kernel configuration options" 612 # Determine if we really need a .config. The only time when we don't need
613 # one is when all of the CONFIG_CHECK options are prefixed with "~".
370 for config in ${CONFIG_CHECK} 614 for config in ${CONFIG_CHECK}
371 do 615 do
372 negate="${config:0:1}" 616 if [[ "${config:0:1}" != "~" ]]; then
373 if [ "${negate}" == "!" ]; 617 config_required=1
374 then 618 break
619 fi
620 done
621
622 if [[ ${config_required} == 0 ]]; then
623 # In the case where we don't require a .config, we can now bail out
624 # if the user has no .config as there is nothing to do. Otherwise
625 # code later will cause a failure due to missing .config.
626 if ! linux_config_exists; then
627 ewarn "Unable to check for the following kernel config options due"
628 ewarn "to absence of any configured kernel sources:"
629 for config in ${CONFIG_CHECK}; do
630 ewarn " - ${config#\~}"
631 done
632 ewarn "You're on your own to make sure they are set if needed."
633 return 0
634 fi
635 else
636 require_configured_kernel
637 fi
638
639 einfo "Checking for suitable kernel configuration options..."
640
641 for config in ${CONFIG_CHECK}
642 do
643 # if we specify any fatal, ensure we honor them
644 die=1
645 error=0
646 negate=0
647 reworkmodulenames=0
648
649 if [[ ${config:0:1} == "~" ]]; then
650 die=0
375 config="${config:1}" 651 config=${config:1}
652 elif [[ ${config:0:1} == "@" ]]; then
653 die=0
654 reworkmodulenames=1
655 config=${config:1}
656 fi
657 if [[ ${config:0:1} == "!" ]]; then
658 negate=1
659 config=${config:1}
660 fi
661
662 if [[ ${negate} == 1 ]]; then
663 linux_chkconfig_present ${config} && error=2
664 elif [[ ${reworkmodulenames} == 1 ]]; then
665 local temp_config="${config//*:}" i n
666 config="${config//:*}"
376 if linux_chkconfig_present ${config} 667 if linux_chkconfig_present ${config}; then
377 then 668 for i in ${MODULE_NAMES}; do
669 n="${i//${temp_config}}"
670 [[ -z ${n//\(*} ]] && \
671 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
672 done
673 error=2
674 fi
675 else
676 linux_chkconfig_present ${config} || error=1
677 fi
678
679 if [[ ${error} > 0 ]]; then
680 local report_func="eerror" local_error
681 local_error="ERROR_${config}"
682 local_error="${!local_error}"
683
684 if [[ -z "${local_error}" ]]; then
685 # using old, deprecated format.
378 local_error="${config}_ERROR" 686 local_error="${config}_ERROR"
379 local_error="${!local_error}" 687 local_error="${!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 688 fi
384 elif [ "${negate}" == "@" ]; 689 if [[ ${die} == 0 && -z "${local_error}" ]]; then
385 then 690 #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" 691 local_error="WARNING_${config}"
394 local_error="${!local_error}" 692 local_error="${!local_error}"
395 [ -n "${local_error}" ] && eerror " ${local_error}" || \ 693 if [[ -n "${local_error}" ]] ; then
396 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is." 694 report_func="ewarn"
397 695 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 696 fi
405 else 697
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 ${local_error} ]] ; then 698 if [[ -z "${local_error}" ]]; then
414 local_error="${config}_ERROR" 699 [[ ${error} == 1 ]] \
415 local_error="${!local_error}" 700 && local_error="is not set when it should be." \
416 fi 701 || local_error="should not be set. But it is."
417 702 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 703 fi
704 if [[ ${die} == 0 ]]; then
705 ${report_func} " ${local_error}"
706 soft_errors_count=$[soft_errors_count + 1]
707 else
708 ${report_func} " ${local_error}"
709 hard_errors_count=$[hard_errors_count + 1]
710 fi
422 fi 711 fi
423 done 712 done
424 713
425 if [ "${error}" == 1 ] ; 714 if [[ ${hard_errors_count} > 0 ]]; then
426 then
427 eerror "Please check to make sure these options are set correctly." 715 eerror "Please check to make sure these options are set correctly."
716 eerror "Failure to do so may cause unexpected problems."
428 eerror "Once you have satisfied these options, please try merging" 717 eerror "Once you have satisfied these options, please try merging"
429 eerror "this package again." 718 eerror "this package again."
430 die "Incorrect kernel configuration options" 719 die "Incorrect kernel configuration options"
720 elif [[ ${soft_errors_count} > 0 ]]; then
721 ewarn "Please check to make sure these options are set correctly."
722 ewarn "Failure to do so may cause unexpected problems."
723 else
724 eend 0
431 fi 725 fi
432} 726}
433 727
434check_zlibinflate() { 728check_zlibinflate() {
435 # if we haven't determined the version yet, we need too. 729 # if we haven't determined the version yet, we need to
730 require_configured_kernel
436 get_version; 731 get_version
437 732
438 # although I restructured this code - I really really really dont support it! 733 # although I restructured this code - I really really really dont support it!
439 734
440 # bug #27882 - zlib routines are only linked into the kernel 735 # bug #27882 - zlib routines are only linked into the kernel
441 # if something compiled into the kernel calls them 736 # if something compiled into the kernel calls them
442 # 737 #
443 # plus, for the cloop module, it appears that there's no way 738 # 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 739 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
445 # is on 740 # is on
446 741
447local INFLATE 742 local INFLATE
448local DEFLATE 743 local DEFLATE
449 744
450 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 745 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
451 746
452 ebegin "checking ZLIB_INFLATE" 747 ebegin "checking ZLIB_INFLATE"
453 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 748 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
454 eend $? 749 eend $?
455 [ "$?" != 0 ] && die 750 [ "$?" != 0 ] && die
456 751
457 ebegin "checking ZLIB_DEFLATE" 752 ebegin "checking ZLIB_DEFLATE"
458 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 753 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
459 eend $? 754 eend $?
460 [ "$?" != 0 ] && die 755 [ "$?" != 0 ] && die
461 756
462
463 local LINENO_START 757 local LINENO_START
464 local LINENO_END 758 local LINENO_END
465 local SYMBOLS 759 local SYMBOLS
466 local x 760 local x
467 761
468 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 762 LINENO_END="$(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)" 763 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 )) 764 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
471 (( LINENO_END = $LINENO_END - 1 )) 765 (( 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;')" 766 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! 772 # we have a winner!
479 einfo "${x} ensures zlib is linked into your kernel - excellent" 773 einfo "${x} ensures zlib is linked into your kernel - excellent"
480 return 0 774 return 0
481 fi 775 fi
482 done 776 done
483 777
484 eerror 778 eerror
485 eerror "This kernel module requires ZLIB library support." 779 eerror "This kernel module requires ZLIB library support."
486 eerror "You have enabled zlib support in your kernel, but haven't enabled" 780 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" 781 eerror "enabled any option that will ensure that zlib is linked into your"
488 eerror "kernel." 782 eerror "kernel."
502} 796}
503 797
504################################ 798################################
505# Default pkg_setup 799# Default pkg_setup
506# Also used when inheriting linux-mod to force a get_version call 800# Also used when inheriting linux-mod to force a get_version call
507 801# @FUNCTION: linux-info_pkg_setup
802# @DESCRIPTION:
803# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
804# to support the options specified in CONFIG_CHECK (if not null)
508linux-info_pkg_setup() { 805linux-info_pkg_setup() {
509 get_version || die "Unable to calculate Linux Kernel version" 806 get_version
807 if [[ $rc -ne 0 ]]; then
808 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
809 get_running_version
810 fi
811
812 if kernel_is 2 4; then
813 if [ "$( gcc-major-version )" -eq "4" ] ; then
814 echo
815 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
816 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
817 echo
818 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
819 ewarn "newer kernel that supports gcc-4."
820 echo
821 ewarn "Also be aware that bugreports about gcc-4 not working"
822 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
823 echo
824 epause 10
825 fi
826 fi
827
510 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 828 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
511} 829}

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