1 # Copyright 1999-2016 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
4 # @ECLASS: linux-info.eclass
8 # Original author: John Mylchreest <johnm@gentoo.org>
9 # @BLURB: eclass used for accessing kernel related information
11 # This eclass is used as a central eclass for accessing kernel
12 # related information for source or binary already installed.
13 # It is vital for linux-mod.eclass to function correctly, and is split
14 # out so that any ebuild behaviour "templates" are abstracted out
15 # using additional eclasses.
17 # "kernel config" in this file means:
18 # The .config of the currently installed sources is used as the first
19 # preference, with a fall-back to bundled config (/proc/config.gz) if available.
21 # Before using any of the config-handling functions in this eclass, you must
22 # ensure that one of the following functions has been called (in order of
23 # preference), otherwise you will get bugs like #364041):
24 # linux-info_pkg_setup
25 # linux-info_get_any_version
29 # A Couple of env vars are available to effect usage of this eclass
30 # These are as follows:
32 # @ECLASS-VARIABLE: KERNEL_DIR
34 # A string containing the directory of the target kernel sources. The default value is
37 # @ECLASS-VARIABLE: CONFIG_CHECK
39 # A string containing a list of .config options to check for before
40 # proceeding with the install.
42 # e.g.: CONFIG_CHECK="MTRR"
44 # You can also check that an option doesn't exist by
45 # prepending it with an exclamation mark (!).
47 # e.g.: CONFIG_CHECK="!MTRR"
49 # To simply warn about a missing option, prepend a '~'.
50 # It may be combined with '!'.
52 # In general, most checks should be non-fatal. The only time fatal checks should
53 # be used is for building kernel modules or cases that a compile will fail
56 # This is to allow usage of binary kernels, and minimal systems without kernel
59 # @ECLASS-VARIABLE: ERROR_<CFG>
61 # A string containing the error message to display when the check against CONFIG_CHECK
62 # fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
64 # e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
66 # @ECLASS-VARIABLE: KBUILD_OUTPUT
68 # A string passed on commandline, or set from the kernel makefile. It contains the directory
69 # which is to be used as the kernel object directory.
71 # There are also a couple of variables which are set by this, and shouldn't be
72 # set by hand. These are as follows:
74 # @ECLASS-VARIABLE: KV_FULL
76 # A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
78 # @ECLASS-VARIABLE: KV_MAJOR
80 # A read-only variable. It's an integer containing the kernel major version. ie: 2
82 # @ECLASS-VARIABLE: KV_MINOR
84 # A read-only variable. It's an integer containing the kernel minor version. ie: 6
86 # @ECLASS-VARIABLE: KV_PATCH
88 # A read-only variable. It's an integer containing the kernel patch version. ie: 9
90 # @ECLASS-VARIABLE: KV_EXTRA
92 # A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
94 # @ECLASS-VARIABLE: KV_LOCAL
96 # A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
98 # @ECLASS-VARIABLE: KV_DIR
100 # A read-only variable. It's a string containing the kernel source directory, will be null if
101 # KERNEL_DIR is invalid.
103 # @ECLASS-VARIABLE: KV_OUT_DIR
105 # A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
106 # KBUILD_OUTPUT is used. This should be used for referencing .config.
108 # And to ensure all the weirdness with crosscompile
109 inherit toolchain-funcs versionator
111 EXPORT_FUNCTIONS pkg_setup
113 # Overwritable environment Var's
114 # ---------------------------------------
115 KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
121 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
122 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
125 # @FUNCTION: set_arch_to_kernel
127 # Set the env ARCH to match what the kernel expects.
128 set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
129 # @FUNCTION: set_arch_to_portage
131 # Set the env ARCH to match what portage expects.
132 set_arch_to_portage() { export ARCH=$(tc-arch); }
135 # -------------------
136 # qeinfo is a quiet einfo call when EBUILD_PHASE
137 # should not have visible output.
143 case "${EBUILD_PHASE}" in
144 depend) unset outputmsg;;
145 clean) unset outputmsg;;
146 preinst) unset outputmsg;;
148 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
151 qeinfo() { qout einfo "${@}" ; }
152 qewarn() { qout ewarn "${@}" ; }
153 qeerror() { qout eerror "${@}" ; }
156 # ---------------------------------------
158 # @FUNCTION: getfilevar
159 # @USAGE: variable configfile
160 # @RETURN: the value of the variable
162 # It detects the value of the variable defined in the file configfile. This is
163 # done by including the configfile, and printing the variable with Make.
164 # It WILL break if your makefile has missing dependencies!
166 local ERROR basefname basedname myARCH="${ARCH}" M="${S}"
169 [ -z "${1}" ] && ERROR=1
170 [ ! -f "${2}" ] && ERROR=1
172 if [ "${ERROR}" = 1 ]
175 eerror "getfilevar requires 2 variables, with the second a valid file."
176 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
178 basefname="$(basename ${2})"
179 basedname="$(dirname ${2})"
182 # We use nonfatal because we want the caller to take care of things #373151
183 [[ ${EAPI:-0} == [0123] ]] && nonfatal() { "$@"; }
184 case ${EBUILD_PHASE_FUNC} in
185 pkg_info|pkg_nofetch|pkg_pretend) M="${T}" ;;
187 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
188 nonfatal emake -C "${basedname}" M="${M}" ${BUILD_FIXES} -s -f - 2>/dev/null
194 # @FUNCTION: getfilevar_noexec
195 # @USAGE: variable configfile
196 # @RETURN: the value of the variable
198 # It detects the value of the variable defined in the file configfile.
199 # This is done with sed matching an expression only. If the variable is defined,
200 # you will run into problems. See getfilevar for those cases.
201 getfilevar_noexec() {
202 local ERROR basefname basedname mycat myARCH="${ARCH}"
206 [ -z "${1}" ] && ERROR=1
207 [ ! -f "${2}" ] && ERROR=1
208 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
210 if [ "${ERROR}" = 1 ]
213 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
214 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
218 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
219 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
220 s,[[:space:]]*\$,,g ;
226 # @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
229 # This is only set if one of the linux_config_*exists functions has been called.
230 # We use it for a QA warning that the check for a config has not been performed,
231 # as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
232 # config is available at all.
233 _LINUX_CONFIG_EXISTS_DONE=
235 linux_config_qa_check() {
237 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
238 ewarn "QA: You called $f before any linux_config_exists!"
239 ewarn "QA: The return value of $f will NOT guaranteed later!"
243 # @FUNCTION: linux_config_src_exists
244 # @RETURN: true or false
246 # It returns true if .config exists in a build directory otherwise false
247 linux_config_src_exists() {
248 export _LINUX_CONFIG_EXISTS_DONE=1
249 [[ -n ${KV_OUT_DIR} && -s ${KV_OUT_DIR}/.config ]]
252 # @FUNCTION: linux_config_bin_exists
253 # @RETURN: true or false
255 # It returns true if .config exists in /proc, otherwise false
256 linux_config_bin_exists() {
257 export _LINUX_CONFIG_EXISTS_DONE=1
258 [[ -s /proc/config.gz ]]
261 # @FUNCTION: linux_config_exists
262 # @RETURN: true or false
264 # It returns true if .config exists otherwise false
266 # This function MUST be checked before using any of the linux_chkconfig_*
268 linux_config_exists() {
269 linux_config_src_exists || linux_config_bin_exists
272 # @FUNCTION: linux_config_path
274 # Echo the name of the config file to use. If none are found,
276 linux_config_path() {
277 if linux_config_src_exists; then
278 echo "${KV_OUT_DIR}/.config"
279 elif linux_config_bin_exists; then
280 echo "/proc/config.gz"
286 # @FUNCTION: require_configured_kernel
288 # This function verifies that the current kernel is configured (it checks against the existence of .config)
290 require_configured_kernel() {
291 if ! linux_config_src_exists; then
292 qeerror "Could not find a usable .config in the kernel source directory."
293 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
294 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
295 qeerror "it points to the necessary object directory so that it might find .config."
296 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
300 # @FUNCTION: linux_chkconfig_present
302 # @RETURN: true or false
304 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
305 # If linux_config_exists returns false, the results of this are UNDEFINED. You
306 # MUST call linux_config_exists first.
307 linux_chkconfig_present() {
308 linux_config_qa_check linux_chkconfig_present
309 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == [my] ]]
312 # @FUNCTION: linux_chkconfig_module
314 # @RETURN: true or false
316 # It checks that CONFIG_<option>=m is present in the current kernel .config
317 # If linux_config_exists returns false, the results of this are UNDEFINED. You
318 # MUST call linux_config_exists first.
319 linux_chkconfig_module() {
320 linux_config_qa_check linux_chkconfig_module
321 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == m ]]
324 # @FUNCTION: linux_chkconfig_builtin
326 # @RETURN: true or false
328 # It checks that CONFIG_<option>=y is present in the current kernel .config
329 # If linux_config_exists returns false, the results of this are UNDEFINED. You
330 # MUST call linux_config_exists first.
331 linux_chkconfig_builtin() {
332 linux_config_qa_check linux_chkconfig_builtin
333 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == y ]]
336 # @FUNCTION: linux_chkconfig_string
338 # @RETURN: CONFIG_<option>
340 # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
341 # If linux_config_exists returns false, the results of this are UNDEFINED. You
342 # MUST call linux_config_exists first.
343 linux_chkconfig_string() {
344 linux_config_qa_check linux_chkconfig_string
345 getfilevar_noexec "CONFIG_$1" "$(linux_config_path)"
348 # Versioning Functions
349 # ---------------------------------------
351 # @FUNCTION: kernel_is
352 # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
353 # @RETURN: true or false
355 # It returns true when the current kernel version satisfies the comparison against the passed version.
356 # -eq is the default comparison.
359 # For Example where KV = 2.6.9
360 # kernel_is 2 4 returns false
361 # kernel_is 2 returns true
362 # kernel_is 2 6 returns true
363 # kernel_is 2 6 8 returns false
364 # kernel_is 2 6 9 returns true
367 # Note: duplicated in kernel-2.eclass
369 # if we haven't determined the version yet, we need to.
370 linux-info_get_any_version
372 # Now we can continue
373 local operator test value
376 lt) operator="-lt"; shift;;
377 gt) operator="-gt"; shift;;
378 le) operator="-le"; shift;;
379 ge) operator="-ge"; shift;;
380 eq) operator="-eq"; shift;;
383 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
385 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
386 : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
387 [ ${test} ${operator} ${value} ]
393 # ignore files with ~ in it.
394 for i in $(ls ${1}/localversion* 2>/dev/null); do
395 [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
398 for i in ${lv_list}; do
405 # Check if the Makefile is valid for direct parsing.
406 # Check status results:
407 # - PASS, use 'getfilevar' to extract values
408 # - FAIL, use 'getfilevar_noexec' to extract values
409 # The check may fail if:
410 # - make is not present
411 # - corruption exists in the kernel makefile
412 get_makefile_extract_function() {
413 local a='' b='' mkfunc='getfilevar'
414 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
415 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
416 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
420 # internal variable, so we know to only print the warning once
421 get_version_warning_done=
423 # @FUNCTION: get_version
425 # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
426 # (if KV_FULL is already set it does nothing).
428 # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
430 # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
431 # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
432 # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
436 # no need to execute this twice assuming KV_FULL is populated.
437 # we can force by unsetting KV_FULL
438 [ -n "${KV_FULL}" ] && return 0
440 # if we dont know KV_FULL, then we need too.
441 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
444 # KV_DIR will contain the full path to the sources directory we should use
445 [ -z "${get_version_warning_done}" ] && \
446 qeinfo "Determining the location of the kernel source code"
447 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
449 if [ -z "${KV_DIR}" ]
451 if [ -z "${get_version_warning_done}" ]; then
452 get_version_warning_done=1
453 qewarn "Unable to find kernel sources at ${KERNEL_DIR}"
454 #qeinfo "This package requires Linux sources."
455 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
456 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
457 qeinfo "(or the kernel you wish to build against)."
458 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
460 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
466 # See if the kernel dir is actually an output dir. #454294
467 if [ -z "${KBUILD_OUTPUT}" -a -L "${KERNEL_DIR}/source" ]; then
468 KBUILD_OUTPUT=${KERNEL_DIR}
469 KERNEL_DIR=$(readlink -f "${KERNEL_DIR}/source")
473 if [ -z "${get_version_warning_done}" ]; then
474 qeinfo "Found kernel source directory:"
478 if [ ! -s "${KV_DIR}/Makefile" ]
480 if [ -z "${get_version_warning_done}" ]; then
481 get_version_warning_done=1
482 qeerror "Could not find a Makefile in the kernel source directory."
483 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
488 # OK so now we know our sources directory, but they might be using
489 # KBUILD_OUTPUT, and we need this for .config and localversions-*
490 # so we better find it eh?
491 # do we pass KBUILD_OUTPUT on the CLI?
492 local OUTPUT_DIR=${KBUILD_OUTPUT}
495 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
497 if [[ -z ${OUTPUT_DIR} ]]; then
498 # Decide the function used to extract makefile variables.
499 local mkfunc=$(get_makefile_extract_function "${KERNEL_MAKEFILE}")
501 # And if we didn't pass it, we can take a nosey in the Makefile.
502 OUTPUT_DIR=$(${mkfunc} KBUILD_OUTPUT "${KERNEL_MAKEFILE}")
505 # And contrary to existing functions I feel we shouldn't trust the
506 # directory name to find version information as this seems insane.
507 # So we parse ${KERNEL_MAKEFILE}. We should be able to trust that
508 # the Makefile is simple enough to use the noexec extract function.
509 # This has been true for every release thus far, and it's faster
510 # than using make to evaluate the Makefile every time.
511 KV_MAJOR=$(getfilevar_noexec VERSION "${KERNEL_MAKEFILE}")
512 KV_MINOR=$(getfilevar_noexec PATCHLEVEL "${KERNEL_MAKEFILE}")
513 KV_PATCH=$(getfilevar_noexec SUBLEVEL "${KERNEL_MAKEFILE}")
514 KV_EXTRA=$(getfilevar_noexec EXTRAVERSION "${KERNEL_MAKEFILE}")
516 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
518 if [ -z "${get_version_warning_done}" ]; then
519 get_version_warning_done=1
520 qeerror "Could not detect kernel version."
521 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
526 # and in newer versions we can also pull LOCALVERSION if it is set.
527 # but before we do this, we need to find if we use a different object directory.
528 # This *WILL* break if the user is using localversions, but we assume it was
529 # caught before this if they are.
530 if [[ -z ${OUTPUT_DIR} ]] ; then
531 # Try to locate a kernel that is most relevant for us.
532 for OUTPUT_DIR in "${SYSROOT}" "${ROOT}" "" ; do
533 OUTPUT_DIR+="/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build"
534 if [[ -e ${OUTPUT_DIR} ]] ; then
540 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
541 if [ -n "${KV_OUT_DIR}" ];
543 qeinfo "Found kernel object directory:"
544 qeinfo " ${KV_OUT_DIR}"
546 # and if we STILL have not got it, then we better just set it to KV_DIR
547 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
549 # Grab the kernel release from the output directory.
550 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
552 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
553 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
554 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
555 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
560 # KV_LOCAL currently contains the full release; discard the first bits.
561 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
563 # If the updated local version was not changed, the tree is not prepared.
564 # Clear out KV_LOCAL in that case.
565 # TODO: this does not detect a change in the localversion part between
566 # kernel.release and the value that would be generated.
567 if [ "$KV_LOCAL" = "$tmplocal" ]; then
573 # And we should set KV_FULL to the full expanded version
574 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
576 qeinfo "Found sources for kernel version:"
582 # @FUNCTION: get_running_version
584 # It gets the version of the current running kernel and the result is the same as get_version() if the
585 # function can find the sources.
586 get_running_version() {
589 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
590 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
591 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
595 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
596 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
600 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
601 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
606 # This handles a variety of weird kernel versions. Make sure to update
607 # tests/linux-info_get_running_version.sh if you want to change this.
608 local kv_full=${KV_FULL//[-+_]*}
609 KV_MAJOR=$(get_version_component_range 1 ${kv_full})
610 KV_MINOR=$(get_version_component_range 2 ${kv_full})
611 KV_PATCH=$(get_version_component_range 3 ${kv_full})
612 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}${KV_PATCH:+.${KV_PATCH}}}"
618 # This next function is named with the eclass prefix to avoid conflicts with
619 # some old versionator-like eclass functions.
621 # @FUNCTION: linux-info_get_any_version
623 # This attempts to find the version of the sources, and otherwise falls back to
624 # the version of the running kernel.
625 linux-info_get_any_version() {
627 if [[ $? -ne 0 ]]; then
628 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
634 # ebuild check functions
635 # ---------------------------------------
637 # @FUNCTION: check_kernel_built
639 # This function verifies that the current kernel sources have been already prepared otherwise it dies.
640 check_kernel_built() {
641 # if we haven't determined the version yet, we need to
642 require_configured_kernel
646 if kernel_is -ge 3 7; then
647 versionh_path="include/generated/uapi/linux/version.h"
649 versionh_path="include/linux/version.h"
652 if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
654 eerror "These sources have not yet been prepared."
655 eerror "We cannot build against an unprepared tree."
656 eerror "To resolve this, please type the following:"
658 eerror "# cd ${KV_DIR}"
659 eerror "# make oldconfig"
660 eerror "# make modules_prepare"
662 eerror "Then please try merging this module again."
663 die "Kernel sources need compiling first"
667 # @FUNCTION: check_modules_supported
669 # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
670 check_modules_supported() {
671 # if we haven't determined the version yet, we need too.
672 require_configured_kernel
675 if ! linux_chkconfig_builtin "MODULES"; then
676 eerror "These sources do not support loading external modules."
677 eerror "to be able to use this module please enable \"Loadable modules support\""
678 eerror "in your kernel, recompile and then try merging this module again."
679 die "No support for external modules in ${KV_FULL} config"
683 # @FUNCTION: check_extra_config
685 # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
686 # the prefix ~ is not used) doesn't satisfy the directive.
687 check_extra_config() {
688 local config negate die error reworkmodulenames
689 local soft_errors_count=0 hard_errors_count=0 config_required=0
690 # store the value of the QA check, because otherwise we won't catch usages
691 # after if check_extra_config is called AND other direct calls are done
693 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
695 # if we haven't determined the version yet, we need to
696 linux-info_get_any_version
698 # Determine if we really need a .config. The only time when we don't need
699 # one is when all of the CONFIG_CHECK options are prefixed with "~".
700 for config in ${CONFIG_CHECK}; do
701 if [[ "${config:0:1}" != "~" ]]; then
707 if [[ ${config_required} == 0 ]]; then
708 # In the case where we don't require a .config, we can now bail out
709 # if the user has no .config as there is nothing to do. Otherwise
710 # code later will cause a failure due to missing .config.
711 if ! linux_config_exists; then
712 ewarn "Unable to check for the following kernel config options due"
713 ewarn "to absence of any configured kernel sources or compiled"
715 for config in ${CONFIG_CHECK}; do
718 local_error="ERROR_${config}"
719 msg="${!local_error}"
720 if [[ -z ${msg} ]]; then
721 local_error="WARNING_${config}"
722 msg="${!local_error}"
724 ewarn " - ${config}${msg:+ - }${msg}"
726 ewarn "You're on your own to make sure they are set if needed."
727 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
731 require_configured_kernel
734 einfo "Checking for suitable kernel configuration options..."
736 for config in ${CONFIG_CHECK}
738 # if we specify any fatal, ensure we honor them
744 if [[ ${config:0:1} == "~" ]]; then
747 elif [[ ${config:0:1} == "@" ]]; then
752 if [[ ${config:0:1} == "!" ]]; then
757 if [[ ${negate} == 1 ]]; then
758 linux_chkconfig_present ${config} && error=2
759 elif [[ ${reworkmodulenames} == 1 ]]; then
760 local temp_config="${config//*:}" i n
761 config="${config//:*}"
762 if linux_chkconfig_present ${config}; then
763 for i in ${MODULE_NAMES}; do
764 n="${i//${temp_config}}"
765 [[ -z ${n//\(*} ]] && \
766 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
771 linux_chkconfig_present ${config} || error=1
774 if [[ ${error} > 0 ]]; then
775 local report_func="eerror" local_error
776 local_error="ERROR_${config}"
777 local_error="${!local_error}"
779 if [[ -z "${local_error}" ]]; then
780 # using old, deprecated format.
781 local_error="${config}_ERROR"
782 local_error="${!local_error}"
784 if [[ ${die} == 0 && -z "${local_error}" ]]; then
785 #soft errors can be warnings
786 local_error="WARNING_${config}"
787 local_error="${!local_error}"
788 if [[ -n "${local_error}" ]] ; then
793 if [[ -z "${local_error}" ]]; then
794 [[ ${error} == 1 ]] \
795 && local_error="is not set when it should be." \
796 || local_error="should not be set. But it is."
797 local_error="CONFIG_${config}:\t ${local_error}"
799 if [[ ${die} == 0 ]]; then
800 ${report_func} " ${local_error}"
801 soft_errors_count=$[soft_errors_count + 1]
803 ${report_func} " ${local_error}"
804 hard_errors_count=$[hard_errors_count + 1]
809 if [[ ${hard_errors_count} > 0 ]]; then
810 eerror "Please check to make sure these options are set correctly."
811 eerror "Failure to do so may cause unexpected problems."
812 eerror "Once you have satisfied these options, please try merging"
813 eerror "this package again."
814 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
815 die "Incorrect kernel configuration options"
816 elif [[ ${soft_errors_count} > 0 ]]; then
817 ewarn "Please check to make sure these options are set correctly."
818 ewarn "Failure to do so may cause unexpected problems."
822 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
825 check_zlibinflate() {
826 # if we haven't determined the version yet, we need to
827 require_configured_kernel
830 # although I restructured this code - I really really really dont support it!
832 # bug #27882 - zlib routines are only linked into the kernel
833 # if something compiled into the kernel calls them
835 # plus, for the cloop module, it appears that there's no way
836 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
842 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
844 ebegin "checking ZLIB_INFLATE"
845 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
849 ebegin "checking ZLIB_DEFLATE"
850 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
859 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
860 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
861 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
862 (( LINENO_END = $LINENO_END - 1 ))
863 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
865 # okay, now we have a list of symbols
866 # we need to check each one in turn, to see whether it is set or not
867 for x in $SYMBOLS ; do
868 if [ "${!x}" = "y" ]; then
870 einfo "${x} ensures zlib is linked into your kernel - excellent"
876 eerror "This kernel module requires ZLIB library support."
877 eerror "You have enabled zlib support in your kernel, but haven't enabled"
878 eerror "enabled any option that will ensure that zlib is linked into your"
881 eerror "Please ensure that you enable at least one of these options:"
884 for x in $SYMBOLS ; do
889 eerror "Please remember to recompile and install your kernel, and reboot"
890 eerror "into your new kernel before attempting to load this kernel module."
892 die "Kernel doesn't include zlib support"
895 ################################
897 # Also used when inheriting linux-mod to force a get_version call
898 # @FUNCTION: linux-info_pkg_setup
900 # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
901 # to support the options specified in CONFIG_CHECK (if not null)
902 linux-info_pkg_setup() {
903 linux-info_get_any_version
905 if kernel_is 2 4; then
906 if [ "$( gcc-major-version )" -eq "4" ] ; then
908 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
909 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
911 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
912 ewarn "newer kernel that supports gcc-4."
914 ewarn "Also be aware that bugreports about gcc-4 not working"
915 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
921 [ -n "${CONFIG_CHECK}" ] && check_extra_config;