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1# Copyright 1999-2006 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 1.71 2009/09/08 12:34:21 robbat2 Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.80 2010/01/10 09:25:12 robbat2 Exp $
4# 4#
5# Original author: John Mylchreest <johnm@gentoo.org> 5# Original author: John Mylchreest <johnm@gentoo.org>
6# Maintainer: kernel-misc@gentoo.org 6# Maintainer: kernel-misc@gentoo.org
7# 7#
8# Please direct your bugs to the current eclass maintainer :) 8# Please direct your bugs to the current eclass maintainer :)
99# @ECLASS-VARIABLE: KV_OUT_DIR 99# @ECLASS-VARIABLE: KV_OUT_DIR
100# @DESCRIPTION: 100# @DESCRIPTION:
101# A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless 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. 102# KBUILD_OUTPUT is used. This should be used for referencing .config.
103 103
104# @ECLASS-VARIABLE: I_KNOW_WHAT_I_AM_DOING
105# @DESCRIPTION:
106# Temporary variable for the migration to making linux-info non-fatal.
107
108# And to ensure all the weirdness with crosscompile 104# And to ensure all the weirdness with crosscompile
109inherit toolchain-funcs versionator 105inherit toolchain-funcs versionator
110 106
111EXPORT_FUNCTIONS pkg_setup 107EXPORT_FUNCTIONS pkg_setup
112 108
113DEPEND="" 109DEPEND=""
114RDEPEND="" 110RDEPEND=""
115
116[ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && \
117DEPEND="kernel_linux? ( virtual/linux-sources )"
118 111
119# Overwritable environment Var's 112# Overwritable environment Var's
120# --------------------------------------- 113# ---------------------------------------
121KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 114KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
122 115
221 p 214 p
222 }" 215 }"
223 fi 216 fi
224} 217}
225 218
219# @PRIVATE-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
220# @DESCRIPTION:
221# This is only set if one of the linux_config_*exists functions has been called.
222# We use it for a QA warning that the check for a config has not been performed,
223# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
224# config is available at all.
225_LINUX_CONFIG_EXISTS_DONE=
226
227linux_config_qa_check() {
228 local f="$1"
229 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
230 ewarn "QA: You called $f before any linux_config_exists!"
231 ewarn "QA: The return value of $f will NOT gaurenteed later!"
232 fi
233}
226 234
227# @FUNCTION: linux_config_src_exists 235# @FUNCTION: linux_config_src_exists
228# @RETURN: true or false 236# @RETURN: true or false
229# @DESCRIPTION: 237# @DESCRIPTION:
230# It returns true if .config exists in a build directory otherwise false 238# It returns true if .config exists in a build directory otherwise false
231linux_config_src_exists() { 239linux_config_src_exists() {
240 export _LINUX_CONFIG_EXISTS_DONE=1
232 [ -s "${KV_OUT_DIR}/.config" ] 241 [ -s "${KV_OUT_DIR}/.config" ]
233} 242}
234 243
235# @FUNCTION: linux_config_bin_exists 244# @FUNCTION: linux_config_bin_exists
236# @RETURN: true or false 245# @RETURN: true or false
237# @DESCRIPTION: 246# @DESCRIPTION:
238# It returns true if .config exists in /proc, otherwise false 247# It returns true if .config exists in /proc, otherwise false
239linux_config_bin_exists() { 248linux_config_bin_exists() {
249 export _LINUX_CONFIG_EXISTS_DONE=1
240 [ -s "/proc/config.gz" ] 250 [ -s "/proc/config.gz" ]
241} 251}
242 252
243# @FUNCTION: linux_config_exists 253# @FUNCTION: linux_config_exists
244# @RETURN: true or false 254# @RETURN: true or false
271# @DESCRIPTION: 281# @DESCRIPTION:
272# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config 282# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
273# If linux_config_exists returns false, the results of this are UNDEFINED. You 283# If linux_config_exists returns false, the results of this are UNDEFINED. You
274# MUST call linux_config_exists first. 284# MUST call linux_config_exists first.
275linux_chkconfig_present() { 285linux_chkconfig_present() {
286 linux_config_qa_check linux_chkconfig_present
276local RESULT 287 local RESULT
277 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
278 local config 288 local config
279 config="${KV_OUT_DIR}/.config" 289 config="${KV_OUT_DIR}/.config"
280 [ ! -f "${config}" ] && config="/proc/config.gz" 290 [ ! -f "${config}" ] && config="/proc/config.gz"
281 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")" 291 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
282 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 292 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
288# @DESCRIPTION: 298# @DESCRIPTION:
289# It checks that CONFIG_<option>=m is present in the current kernel .config 299# It checks that CONFIG_<option>=m is present in the current kernel .config
290# If linux_config_exists returns false, the results of this are UNDEFINED. You 300# If linux_config_exists returns false, the results of this are UNDEFINED. You
291# MUST call linux_config_exists first. 301# MUST call linux_config_exists first.
292linux_chkconfig_module() { 302linux_chkconfig_module() {
303 linux_config_qa_check linux_chkconfig_module
293local RESULT 304 local RESULT
294 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
295 local config 305 local config
296 config="${KV_OUT_DIR}/.config" 306 config="${KV_OUT_DIR}/.config"
297 [ ! -f "${config}" ] && config="/proc/config.gz" 307 [ ! -f "${config}" ] && config="/proc/config.gz"
298 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")" 308 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
299 [ "${RESULT}" = "m" ] && return 0 || return 1 309 [ "${RESULT}" = "m" ] && return 0 || return 1
305# @DESCRIPTION: 315# @DESCRIPTION:
306# It checks that CONFIG_<option>=y is present in the current kernel .config 316# It checks that CONFIG_<option>=y is present in the current kernel .config
307# If linux_config_exists returns false, the results of this are UNDEFINED. You 317# If linux_config_exists returns false, the results of this are UNDEFINED. You
308# MUST call linux_config_exists first. 318# MUST call linux_config_exists first.
309linux_chkconfig_builtin() { 319linux_chkconfig_builtin() {
320 linux_config_qa_check linux_chkconfig_builtin
310local RESULT 321 local RESULT
311 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
312 local config 322 local config
313 config="${KV_OUT_DIR}/.config" 323 config="${KV_OUT_DIR}/.config"
314 [ ! -f "${config}" ] && config="/proc/config.gz" 324 [ ! -f "${config}" ] && config="/proc/config.gz"
315 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")" 325 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
316 [ "${RESULT}" = "y" ] && return 0 || return 1 326 [ "${RESULT}" = "y" ] && return 0 || return 1
322# @DESCRIPTION: 332# @DESCRIPTION:
323# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel). 333# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
324# If linux_config_exists returns false, the results of this are UNDEFINED. You 334# If linux_config_exists returns false, the results of this are UNDEFINED. You
325# MUST call linux_config_exists first. 335# MUST call linux_config_exists first.
326linux_chkconfig_string() { 336linux_chkconfig_string() {
327 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 337 linux_config_qa_check linux_chkconfig_string
328 local config 338 local config
329 config="${KV_OUT_DIR}/.config" 339 config="${KV_OUT_DIR}/.config"
330 [ ! -f "${config}" ] && config="/proc/config.gz" 340 [ ! -f "${config}" ] && config="/proc/config.gz"
331 getfilevar_noexec "CONFIG_${1}" "${config}" 341 getfilevar_noexec "CONFIG_${1}" "${config}"
332} 342}
354 364
355kernel_is() { 365kernel_is() {
356 # if we haven't determined the version yet, we need to. 366 # if we haven't determined the version yet, we need to.
357 linux-info_get_any_version 367 linux-info_get_any_version
358 368
359 local operator test value x=0 y=0 z=0 369 local operator testagainst value x=0 y=0 z=0
360 370
361 case ${1} in 371 case ${1} in
362 -lt|lt) operator="-lt"; shift;; 372 -lt|lt) operator="-lt"; shift;;
363 -gt|gt) operator="-gt"; shift;; 373 -gt|gt) operator="-gt"; shift;;
364 -le|le) operator="-le"; shift;; 374 -le|le) operator="-le"; shift;;
371 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done 381 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
372 value="${value}${x}" 382 value="${value}${x}"
373 z=$((${z} + 1)) 383 z=$((${z} + 1))
374 384
375 case ${z} in 385 case ${z} in
376 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done; 386 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do testagainst="${testagainst}0"; done;
377 test="${test}${KV_MAJOR}";; 387 testagainst="${testagainst}${KV_MAJOR}";;
378 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done; 388 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do testagainst="${testagainst}0"; done;
379 test="${test}${KV_MINOR}";; 389 testagainst="${testagainst}${KV_MINOR}";;
380 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; 390 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do testagainst="${testagainst}0"; done;
381 test="${test}${KV_PATCH}";; 391 testagainst="${testagainst}${KV_PATCH}";;
382 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 392 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
383 esac 393 esac
384 done 394 done
385 395
386 [ ${test} ${operator} ${value} ] && return 0 || return 1 396 [ "${testagainst}" ${operator} "${value}" ] && return 0 || return 1
387} 397}
388 398
389get_localversion() { 399get_localversion() {
390 local lv_list i x 400 local lv_list i x
391 401
467 # KBUILD_OUTPUT, and we need this for .config and localversions-* 477 # KBUILD_OUTPUT, and we need this for .config and localversions-*
468 # so we better find it eh? 478 # so we better find it eh?
469 # do we pass KBUILD_OUTPUT on the CLI? 479 # do we pass KBUILD_OUTPUT on the CLI?
470 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 480 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
471 481
482 # keep track of it
483 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
484
485 # Check if the Makefile is valid for direct parsing.
486 # Check status results:
487 # - PASS, use 'getfilevar' to extract values
488 # - FAIL, use 'getfilevar_noexec' to extract values
489 # The check may fail if:
490 # - make is not present
491 # - corruption exists in the kernel makefile
492 local a='' b='' mkfunc='getfilevar'
493 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
494 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
495 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
496
472 # And if we didn't pass it, we can take a nosey in the Makefile 497 # And if we didn't pass it, we can take a nosey in the Makefile
473 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)" 498 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
474 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 499 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
475 500
476 # And contrary to existing functions I feel we shouldn't trust the 501 # And contrary to existing functions I feel we shouldn't trust the
477 # directory name to find version information as this seems insane. 502 # directory name to find version information as this seems insane.
478 # so we parse ${KV_DIR}/Makefile 503 # so we parse ${KERNEL_MAKEFILE}
479 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)" 504 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
480 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)" 505 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
481 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)" 506 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
482 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)" 507 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
483 508
484 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 509 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
485 then 510 then
486 if [ -z "${get_version_warning_done}" ]; then 511 if [ -z "${get_version_warning_done}" ]; then
487 get_version_warning_done=1 512 get_version_warning_done=1
564# @FUNCTION: linux-info_get_any_version 589# @FUNCTION: linux-info_get_any_version
565# @DESCRIPTION: 590# @DESCRIPTION:
566# This attempts to find the version of the sources, and otherwise falls back to 591# This attempts to find the version of the sources, and otherwise falls back to
567# the version of the running kernel. 592# the version of the running kernel.
568linux-info_get_any_version() { 593linux-info_get_any_version() {
569 get_version 594 get_version
570 if [[ $? -ne 0 ]]; then 595 if [[ $? -ne 0 ]]; then
571 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version" 596 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
572 get_running_version 597 get_running_version
573 fi 598 fi
574} 599}
575 600
576 601
577# ebuild check functions 602# ebuild check functions
622# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e. 647# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
623# the prefix ~ is not used) doesn't satisfy the directive. 648# the prefix ~ is not used) doesn't satisfy the directive.
624check_extra_config() { 649check_extra_config() {
625 local config negate die error reworkmodulenames 650 local config negate die error reworkmodulenames
626 local soft_errors_count=0 hard_errors_count=0 config_required=0 651 local soft_errors_count=0 hard_errors_count=0 config_required=0
652 # store the value of the QA check, because otherwise we won't catch usages
653 # after if check_extra_config is called AND other direct calls are done
654 # later.
655 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
627 656
628 # if we haven't determined the version yet, we need to 657 # if we haven't determined the version yet, we need to
629 linux-info_get_any_version 658 linux-info_get_any_version
630 659
631 # Determine if we really need a .config. The only time when we don't need 660 # Determine if we really need a .config. The only time when we don't need
645 if ! linux_config_exists; then 674 if ! linux_config_exists; then
646 ewarn "Unable to check for the following kernel config options due" 675 ewarn "Unable to check for the following kernel config options due"
647 ewarn "to absence of any configured kernel sources or compiled" 676 ewarn "to absence of any configured kernel sources or compiled"
648 ewarn "config:" 677 ewarn "config:"
649 for config in ${CONFIG_CHECK}; do 678 for config in ${CONFIG_CHECK}; do
679 local_error="ERROR_${config#\~}"
680 msg="${!local_error}"
681 if [[ "x${msg}" == "x" ]]; then
682 local_error="WARNING_${config#\~}"
683 msg="${!local_error}"
684 fi
650 ewarn " - ${config#\~}" 685 ewarn " - ${config#\~}${msg:+ - }${msg}"
651 done 686 done
652 ewarn "You're on your own to make sure they are set if needed." 687 ewarn "You're on your own to make sure they are set if needed."
688 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
653 return 0 689 return 0
654 fi 690 fi
655 else 691 else
656 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 692 require_configured_kernel
657 fi 693 fi
658 694
659 einfo "Checking for suitable kernel configuration options..." 695 einfo "Checking for suitable kernel configuration options..."
660 696
661 for config in ${CONFIG_CHECK} 697 for config in ${CONFIG_CHECK}
734 if [[ ${hard_errors_count} > 0 ]]; then 770 if [[ ${hard_errors_count} > 0 ]]; then
735 eerror "Please check to make sure these options are set correctly." 771 eerror "Please check to make sure these options are set correctly."
736 eerror "Failure to do so may cause unexpected problems." 772 eerror "Failure to do so may cause unexpected problems."
737 eerror "Once you have satisfied these options, please try merging" 773 eerror "Once you have satisfied these options, please try merging"
738 eerror "this package again." 774 eerror "this package again."
775 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
739 die "Incorrect kernel configuration options" 776 die "Incorrect kernel configuration options"
740 elif [[ ${soft_errors_count} > 0 ]]; then 777 elif [[ ${soft_errors_count} > 0 ]]; then
741 ewarn "Please check to make sure these options are set correctly." 778 ewarn "Please check to make sure these options are set correctly."
742 ewarn "Failure to do so may cause unexpected problems." 779 ewarn "Failure to do so may cause unexpected problems."
743 else 780 else
744 eend 0 781 eend 0
745 fi 782 fi
783 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
746} 784}
747 785
748check_zlibinflate() { 786check_zlibinflate() {
749 # if we haven't determined the version yet, we need to 787 # if we haven't determined the version yet, we need to
750 require_configured_kernel 788 require_configured_kernel

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