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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 1.10 2004/12/14 18:56:46 johnm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.62 2009/09/06 22:54:58 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# <CFG>_ERROR <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
48# koutput is used. This should be used for referencing
49# .config.
50 98
99# @ECLASS-VARIABLE: KV_OUT_DIR
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.
51 103
52ECLASS=linux-info 104# @ECLASS-VARIABLE: I_KNOW_WHAT_I_AM_DOING
53INHERITED="$INHERITED $ECLASS" 105# @DESCRIPTION:
106# Temporary variable for the migration to making linux-info non-fatal.
107
108# And to ensure all the weirdness with crosscompile
109inherit toolchain-funcs versionator
110
54EXPORT_FUNCTIONS pkg_setup 111EXPORT_FUNCTIONS pkg_setup
112
113DEPEND="kernel_linux? ( virtual/linux-sources )"
114RDEPEND=""
55 115
56# Overwritable environment Var's 116# Overwritable environment Var's
57# --------------------------------------- 117# ---------------------------------------
58KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" 118KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
59 119
60 120
61# Pulled from eutils as it might be more useful only being here since 121# Bug fixes
62# very few ebuilds which dont use this eclass will ever ever use these functions 122# fix to bug #75034
63set_arch_to_kernel() {
64 export PORTAGE_ARCH="${ARCH}"
65 case ${ARCH} in 123case ${ARCH} in
66 x86) export ARCH="i386";; 124 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
67 amd64) export ARCH="x86_64";; 125 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
68 hppa) export ARCH="parisc";; 126esac
69 mips) export ARCH="mips";; 127
70 *) export ARCH="${ARCH}";; 128# @FUNCTION: set_arch_to_kernel
129# @DESCRIPTION:
130# Set the env ARCH to match what the kernel expects.
131set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
132# @FUNCTION: set_arch_to_portage
133# @DESCRIPTION:
134# Set the env ARCH to match what portage expects.
135set_arch_to_portage() { export ARCH=$(tc-arch); }
136
137# qeinfo "Message"
138# -------------------
139# qeinfo is a quiet einfo call when EBUILD_PHASE
140# should not have visible output.
141qout() {
142 local outputmsg type
143 type=${1}
144 shift
145 outputmsg="${@}"
146 case "${EBUILD_PHASE}" in
147 depend) unset outputmsg;;
148 clean) unset outputmsg;;
149 preinst) unset outputmsg;;
71 esac 150 esac
151 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
72} 152}
73 153
74# set's ARCH back to what portage expects 154qeinfo() { qout einfo "${@}" ; }
75set_arch_to_portage() { 155qeerror() { qout eerror "${@}" ; }
76 export ARCH="${PORTAGE_ARCH}"
77}
78 156
79# File Functions 157# File Functions
80# --------------------------------------- 158# ---------------------------------------
81 159
82# getfilevar accepts 2 vars as follows: 160# @FUNCTION: getfilevar
83# getfilevar <VARIABLE> <CONFIGFILE> 161# @USAGE: variable configfile
84 162# @RETURN: the value of the variable
163# @DESCRIPTION:
164# It detects the value of the variable defined in the file configfile. This is
165# done by including the configfile, and printing the variable with Make.
166# It WILL break if your makefile has missing dependencies!
85getfilevar() { 167getfilevar() {
86local ERROR workingdir basefname basedname xarch 168local ERROR basefname basedname myARCH="${ARCH}"
87 ERROR=0 169 ERROR=0
88 170
89 [ -z "${1}" ] && ERROR=1 171 [ -z "${1}" ] && ERROR=1
90 [ ! -f "${2}" ] && ERROR=1 172 [ ! -f "${2}" ] && ERROR=1
91 173
92 if [ "${ERROR}" = 1 ] 174 if [ "${ERROR}" = 1 ]
93 then 175 then
94 ebeep
95 echo -e "\n" 176 echo -e "\n"
96 eerror "getfilevar requires 2 variables, with the second a valid file." 177 eerror "getfilevar requires 2 variables, with the second a valid file."
97 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 178 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
98 else 179 else
99 workingdir=${PWD}
100 basefname=$(basename ${2}) 180 basefname="$(basename ${2})"
101 basedname=$(dirname ${2}) 181 basedname="$(dirname ${2})"
102 xarch=${ARCH}
103 unset ARCH 182 unset ARCH
104
105 cd ${basedname}
106 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \
107 make -f - e 2>/dev/null
108 cd ${workingdir}
109
110 ARCH=${xarch}
111 fi
112}
113 183
184 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
185 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
186
187 ARCH=${myARCH}
188 fi
189}
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 ${KV_OUT_DIR}"
262 fi
263}
264
265# @FUNCTION: linux_chkconfig_present
266# @USAGE: option
267# @RETURN: true or false
268# @DESCRIPTION:
269# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270# If linux_config_exists returns false, the results of this are UNDEFINED. You
271# MUST call linux_config_exists first.
114linux_chkconfig_present() { 272linux_chkconfig_present() {
115local RESULT 273local RESULT
274 [ -z "${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"
116 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 278 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
117 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 279 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
118} 280}
119 281
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.
120linux_chkconfig_module() { 289linux_chkconfig_module() {
121local 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 "${config}" ] && config="/proc/config.gz"
122 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 295 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
123 [ "${RESULT}" = "m" ] && return 0 || return 1 296 [ "${RESULT}" = "m" ] && return 0 || return 1
124} 297}
125 298
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.
126linux_chkconfig_builtin() { 306linux_chkconfig_builtin() {
127local 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 "${config}" ] && config="/proc/config.gz"
128 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" 312 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
129 [ "${RESULT}" = "y" ] && return 0 || return 1 313 [ "${RESULT}" = "y" ] && return 0 || return 1
130} 314}
131 315
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.
132linux_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 "${config}" ] && config="/proc/config.gz"
133 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" 328 getfilevar_noexec "CONFIG_${1}" "${config}"
134} 329}
135 330
136# Versioning Functions 331# Versioning Functions
137# --------------------------------------- 332# ---------------------------------------
138 333
139# 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.
140# 340#
341# @CODE
141# For Example where KV = 2.6.9 342# For Example where KV = 2.6.9
142# kernel_is 2 4 returns false 343# kernel_is 2 4 returns false
143# kernel_is 2 returns true 344# kernel_is 2 returns true
144# kernel_is 2 6 returns true 345# kernel_is 2 6 returns true
145# kernel_is 2 6 8 returns false 346# kernel_is 2 6 8 returns false
146# kernel_is 2 6 9 returns true 347# kernel_is 2 6 9 returns true
147# 348# @CODE
349
148# got the jist yet? 350# got the jist yet?
149 351
150kernel_is() { 352kernel_is() {
151 # if we haven't determined the version yet, we need too. 353 # if we haven't determined the version yet, we need to.
152 get_version; 354 get_version
355 local operator test value x=0 y=0 z=0
356
357 case ${1} in
358 lt) operator="-lt"; shift;;
359 gt) operator="-gt"; shift;;
360 le) operator="-le"; shift;;
361 ge) operator="-ge"; shift;;
362 eq) operator="-eq"; shift;;
363 *) operator="-eq";;
364 esac
365
366 for x in ${@}; do
367 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
368 value="${value}${x}"
369 z=$((${z} + 1))
370
371 case ${z} in
372 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
373 test="${test}${KV_MAJOR}";;
374 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
375 test="${test}${KV_MINOR}";;
376 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
377 test="${test}${KV_PATCH}";;
378 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
379 esac
380 done
153 381
154 local RESULT 382 [ ${test} ${operator} ${value} ] && return 0 || return 1
155 RESULT=1
156
157 if [ -n "${1}" ]
158 then
159 [ "${1}" = "${KV_MAJOR}" ] && RESULT=0
160 fi
161
162 if [ -n "${2}" ]
163 then
164 RESULT=1
165 [ "${2}" = "${KV_MINOR}" ] && RESULT=0
166 fi
167
168 if [ -n "${3}" ]
169 then
170 RESULT=1
171 [ "${3}" = "${KV_PATCH}" ] && RESULT=0
172 fi
173 return ${RESULT}
174} 383}
175 384
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 ${x}
398}
399
400# @FUNCTION: get_version
401# @DESCRIPTION:
402# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
403# (if KV_FULL is already set it does nothing).
404#
405# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
406#
407# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
408# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
409# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
176get_version() { 410get_version() {
177 local kbuild_output 411 local kbuild_output
178 412
179 # no need to execute this twice assuming KV_FULL is populated. 413 # no need to execute this twice assuming KV_FULL is populated.
180 # we can force by unsetting KV_FULL 414 # we can force by unsetting KV_FULL
181 [ -n "${KV_FULL}" ] && return 415 [ -n "${KV_FULL}" ] && return 0
182 416
183 # if we dont know KV_FULL, then we need too. 417 # if we dont know KV_FULL, then we need too.
184 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 418 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
185 unset KV_DIR 419 unset KV_DIR
186 420
187 # KV_DIR will contain the full path to the sources directory we should use 421 # KV_DIR will contain the full path to the sources directory we should use
188 einfo "Determining the location of the kernel source code" 422 qeinfo "Determining the location of the kernel source code"
189 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 423 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
190 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 424 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
191 425
192 if [ -z "${KV_DIR}" ] 426 if [ -z "${KV_DIR}" ]
193 then 427 then
194 eerror "Unable to find kernel sources at ${KERNEL_DIR}" 428 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
195 einfo "This package requires Linux sources." 429 qeinfo "This package requires Linux sources."
196 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 430 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
197 einfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " 431 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
198 einfo "(or the kernel you wish to build against)." 432 qeinfo "(or the kernel you wish to build against)."
199 einfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" 433 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
200 else 434 else
201 einfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." 435 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
202 fi 436 fi
203 die "Cannot locate Linux sources at ${KERNEL_DIR}" 437 return 1
204 fi 438 fi
205 439
206 einfo "Found kernel source directory:" 440 qeinfo "Found kernel source directory:"
207 einfo " ${KV_DIR}" 441 qeinfo " ${KV_DIR}"
208 442
209 if [ ! -s "${KV_DIR}/Makefile" ] 443 if [ ! -s "${KV_DIR}/Makefile" ]
210 then 444 then
211 eerror "Could not find a Makefile in the kernel source directory." 445 qeerror "Could not find a Makefile in the kernel source directory."
212 eerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 446 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
213 die "Makefile not found in ${KV_DIR}" 447 return 1
214 fi 448 fi
215 449
216 # OK so now we know our sources directory, but they might be using 450 # OK so now we know our sources directory, but they might be using
217 # KBUILD_OUTPUT, and we need this for .config and localversions-* 451 # KBUILD_OUTPUT, and we need this for .config and localversions-*
218 # so we better find it eh? 452 # so we better find it eh?
219 # do we pass KBUILD_OUTPUT on the CLI? 453 # do we pass KBUILD_OUTPUT on the CLI?
220 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 454 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
221 455
222 # And if we didn't pass it, we can take a nosey in the Makefile 456 # And if we didn't pass it, we can take a nosey in the Makefile
223 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 457 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
224 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 458 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
225 459
226 # And contrary to existing functions I feel we shouldn't trust the 460 # And contrary to existing functions I feel we shouldn't trust the
227 # directory name to find version information as this seems insane. 461 # directory name to find version information as this seems insane.
228 # so we parse ${KV_DIR}/Makefile 462 # so we parse ${KV_DIR}/Makefile
229 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 463 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
230 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 464 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
231 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 465 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
232 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 466 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
233 467
234 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 468 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
235 then 469 then
236 eerror "Could not detect kernel version." 470 qeerror "Could not detect kernel version."
237 eerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 471 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
238 die "Could not parse version info from ${KV_DIR}/Makefile" 472 return 1
239 fi 473 fi
240 474
241 # and in newer versions we can also pull LOCALVERSION if it is set. 475 # and in newer versions we can also pull LOCALVERSION if it is set.
242 # but before we do this, we need to find if we use a different object directory. 476 # but before we do this, we need to find if we use a different object directory.
243 # This *WILL* break if the user is using localversions, but we assume it was 477 # This *WILL* break if the user is using localversions, but we assume it was
244 # caught before this if they are. 478 # caught before this if they are.
245 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 479 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
246 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" 480 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
247 481
248 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 482 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
249 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 483 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
250 if [ -n "${KV_OUT_DIR}" ]; 484 if [ -n "${KV_OUT_DIR}" ];
251 then 485 then
252 einfo "Found kernel object directory:" 486 qeinfo "Found kernel object directory:"
253 einfo " ${KV_OUT_DIR}" 487 qeinfo " ${KV_OUT_DIR}"
254 488
255 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)" 489 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
256 fi 490 fi
257 # and if we STILL haven't got it, then we better just set it to KV_DIR 491 # and if we STILL have not got it, then we better just set it to KV_DIR
258 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 492 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
259 493
260 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)" 494 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
495 if linux_config_exists; then
261 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 496 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
262 KV_LOCAL="${KV_LOCAL//\"/}" 497 KV_LOCAL="${KV_LOCAL//\"/}"
263 498
499 # For things like git that can append extra stuff:
500 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
501 linux_chkconfig_builtin LOCALVERSION_AUTO &&
502 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
503 fi
504
264 # And we should set KV_FULL to the full expanded version 505 # And we should set KV_FULL to the full expanded version
265 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 506 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
266 507
267 einfo "Found sources for kernel version:" 508 qeinfo "Found sources for kernel version:"
268 einfo " ${KV_FULL}" 509 qeinfo " ${KV_FULL}"
269
270 if [ ! -s "${KV_OUT_DIR}/.config" ]
271 then
272 eerror "Could not find a usable .config in the kernel source directory."
273 eerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources"
274 die ".config not found in ${KV_OUT_DIR}"
275 fi
276}
277 510
511 return 0
512}
278 513
514# @FUNCTION: get_running_version
515# @DESCRIPTION:
516# It gets the version of the current running kernel and the result is the same as get_version() if the
517# function can find the sources.
518get_running_version() {
519 KV_FULL=$(uname -r)
520
521 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
522 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
523 unset KV_FULL
524 get_version
525 return $?
526 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
527 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
528 unset KV_FULL
529 get_version
530 return $?
531 else
532 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
533 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
534 KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
535 KV_PATCH=${KV_PATCH//-*}
536 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
537 && KV_EXTRA="-${KV_FULL#*-}"
538 fi
539 return 0
540}
279 541
280 542
281# ebuild check functions 543# ebuild check functions
282# --------------------------------------- 544# ---------------------------------------
283 545
546# @FUNCTION: check_kernel_built
547# @DESCRIPTION:
548# This function verifies that the current kernel sources have been already prepared otherwise it dies.
284check_kernel_built() { 549check_kernel_built() {
285 # if we haven't determined the version yet, we need too. 550 # if we haven't determined the version yet, we need to
551 require_configured_kernel
286 get_version; 552 get_version
287 553
288 if [ ! -f "${KV_OUT_DIR}/System.map" ] 554 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
289 then 555 then
290 eerror "These sources have not yet been compiled." 556 eerror "These sources have not yet been prepared."
291 eerror "We cannot build against an uncompiled tree." 557 eerror "We cannot build against an unprepared tree."
292 eerror "To resolve this, please type the following:" 558 eerror "To resolve this, please type the following:"
293 eerror 559 eerror
294 eerror "# cd ${KV_DIR}" 560 eerror "# cd ${KV_DIR}"
295 eerror "# make oldconfig" 561 eerror "# make oldconfig"
296 eerror "# make bzImage modules modules_install" 562 eerror "# make modules_prepare"
297 eerror 563 eerror
298 eerror "Then please try merging this module again." 564 eerror "Then please try merging this module again."
299 die "Kernel sources need compiling first" 565 die "Kernel sources need compiling first"
300 fi 566 fi
301} 567}
302 568
569# @FUNCTION: check_modules_supported
570# @DESCRIPTION:
571# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
303check_modules_supported() { 572check_modules_supported() {
304 # if we haven't determined the version yet, we need too. 573 # if we haven't determined the version yet, we need too.
574 require_configured_kernel
305 get_version; 575 get_version
306 576
307 if ! linux_chkconfig_builtin "MODULES" 577 if ! linux_chkconfig_builtin "MODULES"
308 then 578 then
309 eerror "These sources do not support loading external modules." 579 eerror "These sources do not support loading external modules."
310 eerror "to be able to use this module please enable \"Loadable modules support\"" 580 eerror "to be able to use this module please enable \"Loadable modules support\""
311 eerror "in your kernel, recompile and then try merging this module again." 581 eerror "in your kernel, recompile and then try merging this module again."
312 die "No support for external modules in ${KV_FULL} config" 582 die "No support for external modules in ${KV_FULL} config"
313 fi 583 fi
314} 584}
315 585
586# @FUNCTION: check_extra_config
587# @DESCRIPTION:
588# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
589# the prefix ~ is not used) doesn't satisfy the directive.
316check_extra_config() { 590check_extra_config() {
317local config negate error local_error 591 local config negate die error reworkmodulenames
592 local soft_errors_count=0 hard_errors_count=0 config_required=0
318 593
319 # if we haven't determined the version yet, we need too. 594 # if we haven't determined the version yet, we need to
320 get_version; 595 get_version
321 596
322 einfo "Checking for suitable kernel configuration options" 597 # Determine if we really need a .config. The only time when we don't need
598 # one is when all of the CONFIG_CHECK options are prefixed with "~".
323 for config in ${CONFIG_CHECK} 599 for config in ${CONFIG_CHECK}
324 do 600 do
325 negate="${config:0:1}" 601 if [[ "${config:0:1}" != "~" ]]; then
326 if [ "${negate}" == "!" ]; 602 config_required=1
327 then 603 break
604 fi
605 done
606
607 if [[ ${config_required} == 0 ]]; then
608 # In the case where we don't require a .config, we can now bail out
609 # if the user has no .config as there is nothing to do. Otherwise
610 # code later will cause a failure due to missing .config.
611 if ! linux_config_exists; then
612 ewarn "Unable to check for the following kernel config options due"
613 ewarn "to absence of any configured kernel sources:"
614 for config in ${CONFIG_CHECK}; do
615 ewarn " - ${config#\~}"
616 done
617 ewarn "You're on your own to make sure they are set if needed."
618 return 0
619 fi
620 else
621 require_configured_kernel
622 fi
623
624 einfo "Checking for suitable kernel configuration options..."
625
626 for config in ${CONFIG_CHECK}
627 do
628 # if we specify any fatal, ensure we honor them
629 die=1
630 error=0
631 negate=0
632 reworkmodulenames=0
633
634 if [[ ${config:0:1} == "~" ]]; then
635 die=0
328 config="${config:1}" 636 config=${config:1}
637 elif [[ ${config:0:1} == "@" ]]; then
638 die=0
639 reworkmodulenames=1
640 config=${config:1}
641 fi
642 if [[ ${config:0:1} == "!" ]]; then
643 negate=1
644 config=${config:1}
645 fi
646
647 if [[ ${negate} == 1 ]]; then
648 linux_chkconfig_present ${config} && error=2
649 elif [[ ${reworkmodulenames} == 1 ]]; then
650 local temp_config="${config//*:}" i n
651 config="${config//:*}"
329 if linux_chkconfig_present ${config} 652 if linux_chkconfig_present ${config}; then
330 then 653 for i in ${MODULE_NAMES}; do
654 n="${i//${temp_config}}"
655 [[ -z ${n//\(*} ]] && \
656 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
657 done
658 error=2
659 fi
660 else
661 linux_chkconfig_present ${config} || error=1
662 fi
663
664 if [[ ${error} > 0 ]]; then
665 local report_func="eerror" local_error
666 local_error="ERROR_${config}"
667 local_error="${!local_error}"
668
669 if [[ -z "${local_error}" ]]; then
670 # using old, deprecated format.
331 local_error="${config}_ERROR" 671 local_error="${config}_ERROR"
332 local_error="${!local_error}" 672 local_error="${!local_error}"
333 [ -n "${local_error}" ] && eerror " ${local_error}" || \
334 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is."
335 error=1
336 fi 673 fi
337 else 674 if [[ ${die} == 0 && -z "${local_error}" ]]; then
338 if ! linux_chkconfig_present ${config} 675 #soft errors can be warnings
339 then
340 local_error="${config}_ERROR" 676 local_error="WARNING_${config}"
341 local_error="${!local_error}" 677 local_error="${!local_error}"
342 [ -n "${local_error}" ] && eerror " ${local_error}" || \ 678 if [[ -n "${local_error}" ]] ; then
343 eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't" 679 report_func="ewarn"
344 error=1 680 fi
681 fi
682
683 if [[ -z "${local_error}" ]]; then
684 [[ ${error} == 1 ]] \
685 && local_error="is not set when it should be." \
686 || local_error="should not be set. But it is."
687 local_error="CONFIG_${config}:\t ${local_error}"
688 fi
689 if [[ ${die} == 0 ]]; then
690 ${report_func} " ${local_error}"
691 soft_errors_count=$[soft_errors_count + 1]
692 else
693 ${report_func} " ${local_error}"
694 hard_errors_count=$[hard_errors_count + 1]
345 fi 695 fi
346 fi 696 fi
347 done 697 done
348 698
349 if [ -n "${error}" ] ; 699 if [[ ${hard_errors_count} > 0 ]]; then
350 then
351 eerror "Please check to make sure these options are set correctly." 700 eerror "Please check to make sure these options are set correctly."
701 eerror "Failure to do so may cause unexpected problems."
352 eerror "Once you have satisfied these options, please try merging" 702 eerror "Once you have satisfied these options, please try merging"
353 eerror "this package again." 703 eerror "this package again."
354 die "Incorrect kernel configuration options" 704 die "Incorrect kernel configuration options"
705 elif [[ ${soft_errors_count} > 0 ]]; then
706 ewarn "Please check to make sure these options are set correctly."
707 ewarn "Failure to do so may cause unexpected problems."
708 else
709 eend 0
355 fi 710 fi
356} 711}
357 712
358check_zlibinflate() { 713check_zlibinflate() {
359 # if we haven't determined the version yet, we need too. 714 # if we haven't determined the version yet, we need to
715 require_configured_kernel
360 get_version; 716 get_version
361 717
362 # although I restructured this code - I really really really dont support it! 718 # although I restructured this code - I really really really dont support it!
363 719
364 # bug #27882 - zlib routines are only linked into the kernel 720 # bug #27882 - zlib routines are only linked into the kernel
365 # if something compiled into the kernel calls them 721 # if something compiled into the kernel calls them
366 # 722 #
367 # plus, for the cloop module, it appears that there's no way 723 # plus, for the cloop module, it appears that there's no way
368 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS 724 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
369 # is on 725 # is on
370 726
371local INFLATE 727 local INFLATE
372local DEFLATE 728 local DEFLATE
373 729
374 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 730 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
375 731
376 ebegin "checking ZLIB_INFLATE" 732 ebegin "checking ZLIB_INFLATE"
377 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 733 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
378 eend $? 734 eend $?
379 [ "$?" != 0 ] && die 735 [ "$?" != 0 ] && die
380 736
381 ebegin "checking ZLIB_DEFLATE" 737 ebegin "checking ZLIB_DEFLATE"
382 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 738 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
383 eend $? 739 eend $?
384 [ "$?" != 0 ] && die 740 [ "$?" != 0 ] && die
385 741
386
387 local LINENO_START 742 local LINENO_START
388 local LINENO_END 743 local LINENO_END
389 local SYMBOLS 744 local SYMBOLS
390 local x 745 local x
391 746
392 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 747 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
393 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" 748 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
394 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 749 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
395 (( LINENO_END = $LINENO_END - 1 )) 750 (( LINENO_END = $LINENO_END - 1 ))
396 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" 751 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
402 # we have a winner! 757 # we have a winner!
403 einfo "${x} ensures zlib is linked into your kernel - excellent" 758 einfo "${x} ensures zlib is linked into your kernel - excellent"
404 return 0 759 return 0
405 fi 760 fi
406 done 761 done
407 762
408 eerror 763 eerror
409 eerror "This kernel module requires ZLIB library support." 764 eerror "This kernel module requires ZLIB library support."
410 eerror "You have enabled zlib support in your kernel, but haven't enabled" 765 eerror "You have enabled zlib support in your kernel, but haven't enabled"
411 eerror "enabled any option that will ensure that zlib is linked into your" 766 eerror "enabled any option that will ensure that zlib is linked into your"
412 eerror "kernel." 767 eerror "kernel."
426} 781}
427 782
428################################ 783################################
429# Default pkg_setup 784# Default pkg_setup
430# Also used when inheriting linux-mod to force a get_version call 785# Also used when inheriting linux-mod to force a get_version call
431 786# @FUNCTION: linux-info_pkg_setup
787# @DESCRIPTION:
788# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
789# to support the options specified in CONFIG_CHECK (if not null)
432linux-info_pkg_setup() { 790linux-info_pkg_setup() {
433 get_version; 791 get_version
792 if [[ $rc -ne 0 ]]; then
793 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
794 get_running_version
795 fi
796
797 if kernel_is 2 4; then
798 if [ "$( gcc-major-version )" -eq "4" ] ; then
799 echo
800 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
801 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
802 echo
803 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
804 ewarn "newer kernel that supports gcc-4."
805 echo
806 ewarn "Also be aware that bugreports about gcc-4 not working"
807 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
808 echo
809 epause 10
810 fi
811 fi
812
434 [ -n "${CONFIG_CHECK}" ] && check_extra_config; 813 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
435} 814}

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