/[gentoo-x86]/eclass/linux-info.eclass
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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2004 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 1.28 2005/07/06 20:23:20 agriffis Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.29 2005/07/11 15:08:06 swegener Exp $
4# 4#
5# Description: This eclass is used as a central eclass for accessing kernel 5# Description: This eclass is used as a central eclass for accessing kernel
6# related information for sources already installed. 6# related information for sources already installed.
7# It is vital for linux-mod to function correctly, and is split 7# It is vital for linux-mod to function correctly, and is split
8# out so that any ebuild behaviour "templates" are abstracted out 8# out so that any ebuild behaviour "templates" are abstracted out
13# 13#
14# Please direct your bugs to the current eclass maintainer :) 14# Please direct your bugs to the current eclass maintainer :)
15 15
16# A Couple of env vars are available to effect usage of this eclass 16# A Couple of env vars are available to effect usage of this eclass
17# These are as follows: 17# These are as follows:
18# 18#
19# Env Var Option Description 19# Env Var Option Description
20# KERNEL_DIR <string> The directory containing kernel the target kernel 20# KERNEL_DIR <string> The directory containing kernel the target kernel
21# sources. 21# sources.
22# CONFIG_CHECK <string> a list of .config options to check for before 22# CONFIG_CHECK <string> a list of .config options to check for before
23# proceeding with the install. ie: CONFIG_CHECK="MTRR" 23# proceeding with the install. ie: CONFIG_CHECK="MTRR"
24# You can also check that an option doesn't exist by 24# You can also check that an option doesn't exist by
25# prepending it with an exclamation mark (!). 25# prepending it with an exclamation mark (!).
26# ie: CONFIG_CHECK="!MTRR" 26# ie: CONFIG_CHECK="!MTRR"
27# ERROR_CFG <string> The error message to display when the above check 27# ERROR_CFG <string> The error message to display when the above check
28# fails. <CFG> should reference the appropriate option 28# fails. <CFG> should reference the appropriate option
29# as above. ie: ERROR_MTRR="MTRR exists in the .config 29# as above. ie: ERROR_MTRR="MTRR exists in the .config
32# the kernel makefile. This contains the directory 32# the kernel makefile. This contains the directory
33# which is to be used as the kernel object directory. 33# which is to be used as the kernel object directory.
34 34
35# There are also a couple of variables which are set by this, and shouldn't be 35# There are also a couple of variables which are set by this, and shouldn't be
36# set by hand. These are as follows: 36# set by hand. These are as follows:
37# 37#
38# Env Var Option Description 38# Env Var Option Description
39# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1 39# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1
40# KV_MAJOR <integer> The kernel major version. ie: 2 40# KV_MAJOR <integer> The kernel major version. ie: 2
41# KV_MINOR <integer> The kernel minor version. ie: 6 41# KV_MINOR <integer> The kernel minor version. ie: 6
42# KV_PATCH <integer> The kernel patch version. ie: 9 42# KV_PATCH <integer> The kernel patch version. ie: 9
59 59
60 60
61# Bug fixes 61# Bug fixes
62# fix to bug #75034 62# fix to bug #75034
63case ${ARCH} in 63case ${ARCH} in
64 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 64 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
65 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; 65 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
66esac 66esac
67 67
68# These are legacy wrappers for toolchain-funcs. 68# These are legacy wrappers for toolchain-funcs.
69# I dont like them here, but oh well. 69# I dont like them here, but oh well.
70set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } 70set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; }
187 test="${test}${KV_PATCH}";; 187 test="${test}${KV_PATCH}";;
188 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 188 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
189 esac 189 esac
190 done 190 done
191 191
192 [ ${test} ${operator} ${value} ] && return 0 || return 1 192 [ ${test} ${operator} ${value} ] && return 0 || return 1
193} 193}
194 194
195get_version() { 195get_version() {
196 local kbuild_output 196 local kbuild_output
197 197
198 # no need to execute this twice assuming KV_FULL is populated. 198 # no need to execute this twice assuming KV_FULL is populated.
199 # we can force by unsetting KV_FULL 199 # we can force by unsetting KV_FULL
200 [ -n "${KV_FULL}" ] && return 0 200 [ -n "${KV_FULL}" ] && return 0
201 201
202 # if we dont know KV_FULL, then we need too. 202 # if we dont know KV_FULL, then we need too.
205 205
206 # KV_DIR will contain the full path to the sources directory we should use 206 # KV_DIR will contain the full path to the sources directory we should use
207 qeinfo "Determining the location of the kernel source code" 207 qeinfo "Determining the location of the kernel source code"
208 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 208 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
209 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 209 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
210 210
211 if [ -z "${KV_DIR}" ] 211 if [ -z "${KV_DIR}" ]
212 then 212 then
213 qeerror "Unable to find kernel sources at ${KERNEL_DIR}" 213 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
214 qeinfo "This package requires Linux sources." 214 qeinfo "This package requires Linux sources."
215 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then 215 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
229 then 229 then
230 qeerror "Could not find a Makefile in the kernel source directory." 230 qeerror "Could not find a Makefile in the kernel source directory."
231 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" 231 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
232 return 1 232 return 1
233 fi 233 fi
234 234
235 # OK so now we know our sources directory, but they might be using 235 # OK so now we know our sources directory, but they might be using
236 # KBUILD_OUTPUT, and we need this for .config and localversions-* 236 # KBUILD_OUTPUT, and we need this for .config and localversions-*
237 # so we better find it eh? 237 # so we better find it eh?
238 # do we pass KBUILD_OUTPUT on the CLI? 238 # do we pass KBUILD_OUTPUT on the CLI?
239 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 239 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
240 240
241 # And if we didn't pass it, we can take a nosey in the Makefile 241 # And if we didn't pass it, we can take a nosey in the Makefile
242 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" 242 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)"
243 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 243 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
244 244
245 # And contrary to existing functions I feel we shouldn't trust the 245 # And contrary to existing functions I feel we shouldn't trust the
246 # directory name to find version information as this seems insane. 246 # directory name to find version information as this seems insane.
247 # so we parse ${KV_DIR}/Makefile 247 # so we parse ${KV_DIR}/Makefile
248 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 248 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)"
249 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 249 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)"
250 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 250 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)"
251 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 251 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)"
252 252
253 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 253 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
254 then 254 then
255 qeerror "Could not detect kernel version." 255 qeerror "Could not detect kernel version."
256 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." 256 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
257 return 1 257 return 1
258 fi 258 fi
259 259
260 # and in newer versions we can also pull LOCALVERSION if it is set. 260 # and in newer versions we can also pull LOCALVERSION if it is set.
261 # but before we do this, we need to find if we use a different object directory. 261 # but before we do this, we need to find if we use a different object directory.
262 # This *WILL* break if the user is using localversions, but we assume it was 262 # This *WILL* break if the user is using localversions, but we assume it was
263 # caught before this if they are. 263 # caught before this if they are.
264 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ 264 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \
268 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 268 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
269 if [ -n "${KV_OUT_DIR}" ]; 269 if [ -n "${KV_OUT_DIR}" ];
270 then 270 then
271 qeinfo "Found kernel object directory:" 271 qeinfo "Found kernel object directory:"
272 qeinfo " ${KV_OUT_DIR}" 272 qeinfo " ${KV_OUT_DIR}"
273 273
274 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)" 274 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)"
275 fi 275 fi
276 # and if we STILL haven't got it, then we better just set it to KV_DIR 276 # and if we STILL haven't got it, then we better just set it to KV_DIR
277 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 277 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
278 278
327# --------------------------------------- 327# ---------------------------------------
328 328
329check_kernel_built() { 329check_kernel_built() {
330 # if we haven't determined the version yet, we need too. 330 # if we haven't determined the version yet, we need too.
331 get_version; 331 get_version;
332 332
333 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 333 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
334 then 334 then
335 eerror "These sources have not yet been prepared." 335 eerror "These sources have not yet been prepared."
336 eerror "We cannot build against an unprepared tree." 336 eerror "We cannot build against an unprepared tree."
337 eerror "To resolve this, please type the following:" 337 eerror "To resolve this, please type the following:"
346} 346}
347 347
348check_modules_supported() { 348check_modules_supported() {
349 # if we haven't determined the version yet, we need too. 349 # if we haven't determined the version yet, we need too.
350 get_version; 350 get_version;
351 351
352 if ! linux_chkconfig_builtin "MODULES" 352 if ! linux_chkconfig_builtin "MODULES"
353 then 353 then
354 eerror "These sources do not support loading external modules." 354 eerror "These sources do not support loading external modules."
355 eerror "to be able to use this module please enable \"Loadable modules support\"" 355 eerror "to be able to use this module please enable \"Loadable modules support\""
356 eerror "in your kernel, recompile and then try merging this module again." 356 eerror "in your kernel, recompile and then try merging this module again."
404 if ! linux_chkconfig_present ${config} 404 if ! linux_chkconfig_present ${config}
405 then 405 then
406 # Support the new syntax first. 406 # Support the new syntax first.
407 local_error="ERROR_${config}" 407 local_error="ERROR_${config}"
408 local_error="${!local_error}" 408 local_error="${!local_error}"
409 409
410 # then fall back on the older syntax. 410 # then fall back on the older syntax.
411 if [[ -z ${local_error} ]] ; then 411 if [[ -z ${local_error} ]] ; then
412 local_error="${config}_ERROR" 412 local_error="${config}_ERROR"
413 local_error="${!local_error}" 413 local_error="${!local_error}"
414 fi 414 fi
415 415
416 [[ -n ${local_error} ]] && eerror " ${local_error}" || \ 416 [[ -n ${local_error} ]] && eerror " ${local_error}" || \
417 eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't" 417 eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't"
418 error=1 418 error=1
419 fi 419 fi
420 fi 420 fi
430} 430}
431 431
432check_zlibinflate() { 432check_zlibinflate() {
433 # if we haven't determined the version yet, we need too. 433 # if we haven't determined the version yet, we need too.
434 get_version; 434 get_version;
435 435
436 # although I restructured this code - I really really really dont support it! 436 # although I restructured this code - I really really really dont support it!
437 437
438 # bug #27882 - zlib routines are only linked into the kernel 438 # bug #27882 - zlib routines are only linked into the kernel
439 # if something compiled into the kernel calls them 439 # if something compiled into the kernel calls them
440 # 440 #
441 # plus, for the cloop module, it appears that there's no way 441 # plus, for the cloop module, it appears that there's no way
442 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS 442 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
443 # is on 443 # is on
444 444
445local INFLATE 445 local INFLATE
446local DEFLATE 446 local DEFLATE
447 447
448 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 448 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
449 449
450 ebegin "checking ZLIB_INFLATE" 450 ebegin "checking ZLIB_INFLATE"
451 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 451 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config
452 eend $? 452 eend $?
453 [ "$?" != 0 ] && die 453 [ "$?" != 0 ] && die
454 454
455 ebegin "checking ZLIB_DEFLATE" 455 ebegin "checking ZLIB_DEFLATE"
456 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 456 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config
457 eend $? 457 eend $?
458 [ "$?" != 0 ] && die 458 [ "$?" != 0 ] && die
459 459
460
461 local LINENO_START 460 local LINENO_START
462 local LINENO_END 461 local LINENO_END
463 local SYMBOLS 462 local SYMBOLS
464 local x 463 local x
465 464
466 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 465 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
467 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" 466 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
468 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 467 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
469 (( LINENO_END = $LINENO_END - 1 )) 468 (( LINENO_END = $LINENO_END - 1 ))
470 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" 469 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
476 # we have a winner! 475 # we have a winner!
477 einfo "${x} ensures zlib is linked into your kernel - excellent" 476 einfo "${x} ensures zlib is linked into your kernel - excellent"
478 return 0 477 return 0
479 fi 478 fi
480 done 479 done
481 480
482 eerror 481 eerror
483 eerror "This kernel module requires ZLIB library support." 482 eerror "This kernel module requires ZLIB library support."
484 eerror "You have enabled zlib support in your kernel, but haven't enabled" 483 eerror "You have enabled zlib support in your kernel, but haven't enabled"
485 eerror "enabled any option that will ensure that zlib is linked into your" 484 eerror "enabled any option that will ensure that zlib is linked into your"
486 eerror "kernel." 485 eerror "kernel."

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