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Revision 1.98 - (hide annotations) (download)
Sun Feb 10 06:18:19 2013 UTC (20 months, 1 week ago) by vapier
Branch: MAIN
Changes since 1.97: +4 -2 lines
use emake rather than make to extract variable values #373151 by Kevin Pyle

1 zmedico 1.95 # Copyright 1999-2013 Gentoo Foundation
2 johnm 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.98 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.97 2013/02/10 02:21:55 vapier Exp $
4 johnm 1.10
5 dsd 1.56 # @ECLASS: linux-info.eclass
6     # @MAINTAINER:
7     # kernel-misc@gentoo.org
8 vapier 1.90 # @AUTHOR:
9     # Original author: John Mylchreest <johnm@gentoo.org>
10 dsd 1.56 # @BLURB: eclass used for accessing kernel related information
11     # @DESCRIPTION:
12     # This eclass is used as a central eclass for accessing kernel
13 robbat2 1.62 # related information for source or binary already installed.
14 dsd 1.56 # It is vital for linux-mod.eclass to function correctly, and is split
15     # out so that any ebuild behaviour "templates" are abstracted out
16     # using additional eclasses.
17 robbat2 1.62 #
18     # "kernel config" in this file means:
19     # The .config of the currently installed sources is used as the first
20     # preference, with a fall-back to bundled config (/proc/config.gz) if available.
21 robbat2 1.92 #
22     # Before using any of the config-handling functions in this eclass, you must
23     # ensure that one of the following functions has been called (in order of
24     # preference), otherwise you will get bugs like #364041):
25     # linux-info_pkg_setup
26     # linux-info_get_any_version
27     # get_version
28     # get_running_version
29 dsd 1.56
30 johnm 1.10 # A Couple of env vars are available to effect usage of this eclass
31     # These are as follows:
32 dsd 1.56
33     # @ECLASS-VARIABLE: KERNEL_DIR
34     # @DESCRIPTION:
35     # A string containing the directory of the target kernel sources. The default value is
36     # "/usr/src/linux"
37    
38     # @ECLASS-VARIABLE: CONFIG_CHECK
39     # @DESCRIPTION:
40     # A string containing a list of .config options to check for before
41     # proceeding with the install.
42     #
43     # e.g.: CONFIG_CHECK="MTRR"
44     #
45     # You can also check that an option doesn't exist by
46     # prepending it with an exclamation mark (!).
47     #
48     # e.g.: CONFIG_CHECK="!MTRR"
49     #
50 vapier 1.89 # To simply warn about a missing option, prepend a '~'.
51 robbat2 1.62 # It may be combined with '!'.
52     #
53     # In general, most checks should be non-fatal. The only time fatal checks should
54     # be used is for building kernel modules or cases that a compile will fail
55     # without the option.
56     #
57     # This is to allow usage of binary kernels, and minimal systems without kernel
58     # sources.
59 dsd 1.56
60     # @ECLASS-VARIABLE: ERROR_<CFG>
61     # @DESCRIPTION:
62     # A string containing the error message to display when the check against CONFIG_CHECK
63     # fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
64 swegener 1.29 #
65 dsd 1.56 # e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
66    
67     # @ECLASS-VARIABLE: KBUILD_OUTPUT
68     # @DESCRIPTION:
69     # A string passed on commandline, or set from the kernel makefile. It contains the directory
70     # which is to be used as the kernel object directory.
71 johnm 1.10
72     # There are also a couple of variables which are set by this, and shouldn't be
73     # set by hand. These are as follows:
74 dsd 1.56
75     # @ECLASS-VARIABLE: KV_FULL
76     # @DESCRIPTION:
77     # A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
78    
79     # @ECLASS-VARIABLE: KV_MAJOR
80     # @DESCRIPTION:
81     # A read-only variable. It's an integer containing the kernel major version. ie: 2
82    
83     # @ECLASS-VARIABLE: KV_MINOR
84     # @DESCRIPTION:
85     # A read-only variable. It's an integer containing the kernel minor version. ie: 6
86    
87     # @ECLASS-VARIABLE: KV_PATCH
88     # @DESCRIPTION:
89     # A read-only variable. It's an integer containing the kernel patch version. ie: 9
90    
91     # @ECLASS-VARIABLE: KV_EXTRA
92     # @DESCRIPTION:
93     # A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
94    
95     # @ECLASS-VARIABLE: KV_LOCAL
96     # @DESCRIPTION:
97     # A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
98    
99     # @ECLASS-VARIABLE: KV_DIR
100     # @DESCRIPTION:
101     # A read-only variable. It's a string containing the kernel source directory, will be null if
102     # KERNEL_DIR is invalid.
103    
104     # @ECLASS-VARIABLE: KV_OUT_DIR
105     # @DESCRIPTION:
106     # A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
107     # KBUILD_OUTPUT is used. This should be used for referencing .config.
108 johnm 1.10
109 johnm 1.21 # And to ensure all the weirdness with crosscompile
110 johnm 1.23 inherit toolchain-funcs versionator
111 johnm 1.1
112 johnm 1.8 EXPORT_FUNCTIONS pkg_setup
113 johnm 1.1
114 robbat2 1.65 DEPEND=""
115     RDEPEND=""
116    
117 johnm 1.1 # Overwritable environment Var's
118     # ---------------------------------------
119 johnm 1.21 KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
120 johnm 1.1
121 johnm 1.7
122 johnm 1.16 # Bug fixes
123     # fix to bug #75034
124     case ${ARCH} in
125 swegener 1.29 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
126     ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
127 johnm 1.16 esac
128    
129 vapier 1.51 # @FUNCTION: set_arch_to_kernel
130     # @DESCRIPTION:
131     # Set the env ARCH to match what the kernel expects.
132     set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
133     # @FUNCTION: set_arch_to_portage
134     # @DESCRIPTION:
135     # Set the env ARCH to match what portage expects.
136     set_arch_to_portage() { export ARCH=$(tc-arch); }
137 johnm 1.11
138     # qeinfo "Message"
139     # -------------------
140 johnm 1.21 # qeinfo is a quiet einfo call when EBUILD_PHASE
141 johnm 1.11 # should not have visible output.
142 johnm 1.21 qout() {
143     local outputmsg type
144     type=${1}
145     shift
146     outputmsg="${@}"
147 wolf31o2 1.26 case "${EBUILD_PHASE}" in
148     depend) unset outputmsg;;
149     clean) unset outputmsg;;
150     preinst) unset outputmsg;;
151     esac
152     [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
153 johnm 1.11 }
154    
155 johnm 1.21 qeinfo() { qout einfo "${@}" ; }
156 robbat2 1.82 qewarn() { qout ewarn "${@}" ; }
157 johnm 1.21 qeerror() { qout eerror "${@}" ; }
158 johnm 1.11
159 johnm 1.1 # File Functions
160     # ---------------------------------------
161    
162 dsd 1.56 # @FUNCTION: getfilevar
163     # @USAGE: variable configfile
164     # @RETURN: the value of the variable
165     # @DESCRIPTION:
166 robbat2 1.61 # It detects the value of the variable defined in the file configfile. This is
167     # done by including the configfile, and printing the variable with Make.
168     # It WILL break if your makefile has missing dependencies!
169 johnm 1.1 getfilevar() {
170 vapier 1.94 local ERROR basefname basedname myARCH="${ARCH}"
171 johnm 1.1 ERROR=0
172 johnm 1.16
173 johnm 1.1 [ -z "${1}" ] && ERROR=1
174     [ ! -f "${2}" ] && ERROR=1
175    
176     if [ "${ERROR}" = 1 ]
177     then
178 johnm 1.6 echo -e "\n"
179 johnm 1.1 eerror "getfilevar requires 2 variables, with the second a valid file."
180     eerror " getfilevar <VARIABLE> <CONFIGFILE>"
181     else
182 johnm 1.34 basefname="$(basename ${2})"
183     basedname="$(dirname ${2})"
184 johnm 1.6 unset ARCH
185 johnm 1.21
186 vapier 1.98 # We use nonfatal because we want the caller to take care of things #373151
187     [[ ${EAPI:-0} == [0123] ]] && nonfatal() { "$@"; }
188 johnm 1.42 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
189 vapier 1.98 nonfatal emake -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
190 johnm 1.21
191     ARCH=${myARCH}
192 johnm 1.1 fi
193     }
194    
195 robbat2 1.61 # @FUNCTION: getfilevar_noexec
196     # @USAGE: variable configfile
197     # @RETURN: the value of the variable
198     # @DESCRIPTION:
199     # It detects the value of the variable defined in the file configfile.
200     # This is done with sed matching an expression only. If the variable is defined,
201     # you will run into problems. See getfilevar for those cases.
202     getfilevar_noexec() {
203 vapier 1.94 local ERROR basefname basedname mycat myARCH="${ARCH}"
204 robbat2 1.61 ERROR=0
205 robbat2 1.62 mycat='cat'
206 robbat2 1.61
207     [ -z "${1}" ] && ERROR=1
208     [ ! -f "${2}" ] && ERROR=1
209 robbat2 1.64 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
210 robbat2 1.61
211     if [ "${ERROR}" = 1 ]
212     then
213     echo -e "\n"
214     eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
215     eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
216     else
217 robbat2 1.62 ${mycat} "${2}" | \
218 robbat2 1.61 sed -n \
219 vapier 1.89 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
220 robbat2 1.61 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
221     s,[[:space:]]*\$,,g ;
222     p
223 robbat2 1.62 }"
224 robbat2 1.61 fi
225     }
226    
227 vapier 1.90 # @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
228     # @INTERNAL
229 robbat2 1.75 # @DESCRIPTION:
230     # This is only set if one of the linux_config_*exists functions has been called.
231     # We use it for a QA warning that the check for a config has not been performed,
232     # as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
233     # config is available at all.
234     _LINUX_CONFIG_EXISTS_DONE=
235    
236     linux_config_qa_check() {
237 robbat2 1.76 local f="$1"
238 robbat2 1.75 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
239 robbat2 1.76 ewarn "QA: You called $f before any linux_config_exists!"
240 cardoe 1.87 ewarn "QA: The return value of $f will NOT guaranteed later!"
241 robbat2 1.75 fi
242     }
243 dsd 1.53
244 robbat2 1.62 # @FUNCTION: linux_config_src_exists
245     # @RETURN: true or false
246     # @DESCRIPTION:
247     # It returns true if .config exists in a build directory otherwise false
248     linux_config_src_exists() {
249 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
250 vapier 1.97 [[ -n ${KV_OUT_DIR} && -s ${KV_OUT_DIR}/.config ]]
251 robbat2 1.62 }
252    
253     # @FUNCTION: linux_config_bin_exists
254     # @RETURN: true or false
255     # @DESCRIPTION:
256     # It returns true if .config exists in /proc, otherwise false
257     linux_config_bin_exists() {
258 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
259 vapier 1.97 [[ -s /proc/config.gz ]]
260 robbat2 1.62 }
261    
262 dsd 1.56 # @FUNCTION: linux_config_exists
263     # @RETURN: true or false
264     # @DESCRIPTION:
265     # It returns true if .config exists otherwise false
266 robbat2 1.62 #
267     # This function MUST be checked before using any of the linux_chkconfig_*
268     # functions.
269 dsd 1.53 linux_config_exists() {
270 robbat2 1.62 linux_config_src_exists || linux_config_bin_exists
271 dsd 1.53 }
272    
273 vapier 1.97 # @FUNCTION: linux_config_path
274     # @DESCRIPTION:
275     # Echo the name of the config file to use. If none are found,
276     # then return false.
277     linux_config_path() {
278     if linux_config_src_exists; then
279     echo "${KV_OUT_DIR}/.config"
280     elif linux_config_bin_exists; then
281     echo "/proc/config.gz"
282     else
283     return 1
284     fi
285     }
286    
287 dsd 1.56 # @FUNCTION: require_configured_kernel
288     # @DESCRIPTION:
289     # This function verifies that the current kernel is configured (it checks against the existence of .config)
290     # otherwise it dies.
291 dsd 1.53 require_configured_kernel() {
292 robbat2 1.62 if ! linux_config_src_exists; then
293 dsd 1.53 qeerror "Could not find a usable .config in the kernel source directory."
294     qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
295     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
296     qeerror "it points to the necessary object directory so that it might find .config."
297     die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
298     fi
299     }
300    
301 dsd 1.56 # @FUNCTION: linux_chkconfig_present
302     # @USAGE: option
303     # @RETURN: true or false
304     # @DESCRIPTION:
305 loki_val 1.59 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
306 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
307     # MUST call linux_config_exists first.
308 johnm 1.7 linux_chkconfig_present() {
309 robbat2 1.76 linux_config_qa_check linux_chkconfig_present
310 vapier 1.97 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == [my] ]]
311 johnm 1.1 }
312    
313 dsd 1.56 # @FUNCTION: linux_chkconfig_module
314     # @USAGE: option
315     # @RETURN: true or false
316     # @DESCRIPTION:
317     # It checks that CONFIG_<option>=m is present in the current kernel .config
318 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
319     # MUST call linux_config_exists first.
320 johnm 1.7 linux_chkconfig_module() {
321 robbat2 1.76 linux_config_qa_check linux_chkconfig_module
322 vapier 1.97 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == m ]]
323 johnm 1.1 }
324    
325 dsd 1.56 # @FUNCTION: linux_chkconfig_builtin
326     # @USAGE: option
327     # @RETURN: true or false
328     # @DESCRIPTION:
329     # It checks that CONFIG_<option>=y is present in the current kernel .config
330 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
331     # MUST call linux_config_exists first.
332 johnm 1.7 linux_chkconfig_builtin() {
333 robbat2 1.76 linux_config_qa_check linux_chkconfig_builtin
334 vapier 1.97 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == y ]]
335 johnm 1.1 }
336    
337 dsd 1.56 # @FUNCTION: linux_chkconfig_string
338     # @USAGE: option
339     # @RETURN: CONFIG_<option>
340     # @DESCRIPTION:
341     # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
342 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
343     # MUST call linux_config_exists first.
344 johnm 1.7 linux_chkconfig_string() {
345 robbat2 1.76 linux_config_qa_check linux_chkconfig_string
346 vapier 1.97 getfilevar_noexec "CONFIG_$1" "$(linux_config_path)"
347 johnm 1.7 }
348    
349 johnm 1.1 # Versioning Functions
350     # ---------------------------------------
351    
352 dsd 1.56 # @FUNCTION: kernel_is
353     # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
354     # @RETURN: true or false
355     # @DESCRIPTION:
356     # It returns true when the current kernel version satisfies the comparison against the passed version.
357     # -eq is the default comparison.
358 johnm 1.1 #
359 dsd 1.56 # @CODE
360 johnm 1.1 # For Example where KV = 2.6.9
361 dsd 1.56 # kernel_is 2 4 returns false
362     # kernel_is 2 returns true
363     # kernel_is 2 6 returns true
364     # kernel_is 2 6 8 returns false
365     # kernel_is 2 6 9 returns true
366     # @CODE
367    
368 vapier 1.91 # Note: duplicated in kernel-2.eclass
369 johnm 1.1 kernel_is() {
370 dsd 1.53 # if we haven't determined the version yet, we need to.
371 robbat2 1.69 linux-info_get_any_version
372    
373 vapier 1.91 # Now we can continue
374     local operator test value
375 johnm 1.23
376 vapier 1.91 case ${1#-} in
377     lt) operator="-lt"; shift;;
378     gt) operator="-gt"; shift;;
379     le) operator="-le"; shift;;
380     ge) operator="-ge"; shift;;
381     eq) operator="-eq"; shift;;
382     *) operator="-eq";;
383 johnm 1.23 esac
384 vapier 1.91 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
385 johnm 1.23
386 vapier 1.91 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
387     : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
388     [ ${test} ${operator} ${value} ]
389 johnm 1.1 }
390    
391 johnm 1.30 get_localversion() {
392     local lv_list i x
393    
394     # ignore files with ~ in it.
395     for i in $(ls ${1}/localversion* 2>/dev/null); do
396     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
397     done
398    
399     for i in ${lv_list}; do
400     x="${x}$(<${i})"
401     done
402     x=${x/ /}
403     echo ${x}
404     }
405    
406 robbat2 1.83 # Check if the Makefile is valid for direct parsing.
407     # Check status results:
408     # - PASS, use 'getfilevar' to extract values
409     # - FAIL, use 'getfilevar_noexec' to extract values
410     # The check may fail if:
411     # - make is not present
412     # - corruption exists in the kernel makefile
413     get_makefile_extract_function() {
414     local a='' b='' mkfunc='getfilevar'
415     a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
416     b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
417     [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
418     echo "${mkfunc}"
419     }
420    
421 robbat2 1.63 # internal variable, so we know to only print the warning once
422     get_version_warning_done=
423    
424 dsd 1.56 # @FUNCTION: get_version
425     # @DESCRIPTION:
426     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
427     # (if KV_FULL is already set it does nothing).
428     #
429     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
430     #
431     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
432     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
433     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
434 johnm 1.1 get_version() {
435 robbat2 1.86 local kbuild_output mkfunc tmplocal
436 swegener 1.29
437 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
438     # we can force by unsetting KV_FULL
439 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
440 johnm 1.1
441     # if we dont know KV_FULL, then we need too.
442     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
443     unset KV_DIR
444    
445     # KV_DIR will contain the full path to the sources directory we should use
446 robbat2 1.63 [ -z "${get_version_warning_done}" ] && \
447 johnm 1.11 qeinfo "Determining the location of the kernel source code"
448 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
449     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
450 swegener 1.29
451 johnm 1.1 if [ -z "${KV_DIR}" ]
452     then
453 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
454     get_version_warning_done=1
455     qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
456     #qeinfo "This package requires Linux sources."
457     if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
458     qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
459     qeinfo "(or the kernel you wish to build against)."
460     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
461     else
462     qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
463     fi
464 johnm 1.7 fi
465 johnm 1.19 return 1
466 johnm 1.7 fi
467    
468 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
469     qeinfo "Found kernel source directory:"
470     qeinfo " ${KV_DIR}"
471     fi
472 johnm 1.7
473     if [ ! -s "${KV_DIR}/Makefile" ]
474     then
475 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
476     get_version_warning_done=1
477     qeerror "Could not find a Makefile in the kernel source directory."
478     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
479     fi
480 johnm 1.19 return 1
481 johnm 1.7 fi
482 swegener 1.29
483 johnm 1.4 # OK so now we know our sources directory, but they might be using
484     # KBUILD_OUTPUT, and we need this for .config and localversions-*
485     # so we better find it eh?
486     # do we pass KBUILD_OUTPUT on the CLI?
487     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
488 swegener 1.29
489 robbat2 1.78 # keep track of it
490     KERNEL_MAKEFILE="${KV_DIR}/Makefile"
491 vapier 1.89
492 robbat2 1.83 # Decide the function used to extract makefile variables.
493     mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
494 robbat2 1.78
495 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
496 robbat2 1.78 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
497 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
498 swegener 1.29
499 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
500     # directory name to find version information as this seems insane.
501 robbat2 1.78 # so we parse ${KERNEL_MAKEFILE}
502     KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
503     KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
504     KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
505     KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
506 swegener 1.29
507 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
508     then
509 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
510     get_version_warning_done=1
511     qeerror "Could not detect kernel version."
512     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
513     fi
514 johnm 1.19 return 1
515 johnm 1.7 fi
516 swegener 1.29
517 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
518 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
519     # This *WILL* break if the user is using localversions, but we assume it was
520     # caught before this if they are.
521 robbat2 1.81 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
522 johnm 1.4
523     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
524     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
525     if [ -n "${KV_OUT_DIR}" ];
526     then
527 johnm 1.11 qeinfo "Found kernel object directory:"
528     qeinfo " ${KV_OUT_DIR}"
529 johnm 1.4 fi
530 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
531 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
532 johnm 1.21
533 robbat2 1.86 # Grab the kernel release from the output directory.
534     # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
535     # this function.
536     if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
537     KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
538     elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
539     KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
540     else
541     KV_LOCAL=
542     fi
543 robbat2 1.85
544 robbat2 1.86 # KV_LOCAL currently contains the full release; discard the first bits.
545     tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
546 dsd 1.53
547 robbat2 1.86 # If the updated local version was not changed, the tree is not prepared.
548     # Clear out KV_LOCAL in that case.
549     # TODO: this does not detect a change in the localversion part between
550     # kernel.release and the value that would be generated.
551     if [ "$KV_LOCAL" = "$tmplocal" ]; then
552     KV_LOCAL=
553 robbat2 1.85 else
554 robbat2 1.86 KV_LOCAL=$tmplocal
555 johnm 1.41 fi
556    
557 johnm 1.1 # And we should set KV_FULL to the full expanded version
558     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
559 johnm 1.21
560 johnm 1.11 qeinfo "Found sources for kernel version:"
561     qeinfo " ${KV_FULL}"
562 johnm 1.21
563 johnm 1.19 return 0
564 johnm 1.1 }
565    
566 dsd 1.56 # @FUNCTION: get_running_version
567     # @DESCRIPTION:
568     # It gets the version of the current running kernel and the result is the same as get_version() if the
569     # function can find the sources.
570 johnm 1.23 get_running_version() {
571     KV_FULL=$(uname -r)
572 johnm 1.1
573 abcd 1.84 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
574     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
575     KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
576     unset KV_FULL
577     get_version
578     return $?
579     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
580 johnm 1.23 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
581     unset KV_FULL
582     get_version
583     return $?
584     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
585     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
586     unset KV_FULL
587     get_version
588     return $?
589     else
590 vapier 1.96 # This handles a variety of weird kernel versions. Make sure to update
591     # tests/linux-info:get_running_version.sh if you want to change this.
592     local kv_full=${KV_FULL//[-+_]*}
593     KV_MAJOR=$(get_version_component_range 1 ${kv_full})
594     KV_MINOR=$(get_version_component_range 2 ${kv_full})
595     KV_PATCH=$(get_version_component_range 3 ${kv_full})
596     KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}${KV_PATCH:+.${KV_PATCH}}}"
597     : ${KV_PATCH:=0}
598 johnm 1.23 fi
599     return 0
600     }
601 johnm 1.1
602 robbat2 1.66 # This next function is named with the eclass prefix to avoid conflicts with
603     # some old versionator-like eclass functions.
604    
605     # @FUNCTION: linux-info_get_any_version
606     # @DESCRIPTION:
607     # This attempts to find the version of the sources, and otherwise falls back to
608     # the version of the running kernel.
609     linux-info_get_any_version() {
610 maekke 1.73 get_version
611 robbat2 1.67 if [[ $? -ne 0 ]]; then
612 robbat2 1.66 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
613 maekke 1.73 get_running_version
614 robbat2 1.66 fi
615     }
616    
617 johnm 1.1
618     # ebuild check functions
619     # ---------------------------------------
620    
621 dsd 1.56 # @FUNCTION: check_kernel_built
622     # @DESCRIPTION:
623     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
624 johnm 1.1 check_kernel_built() {
625 dsd 1.53 # if we haven't determined the version yet, we need to
626 dsd 1.54 require_configured_kernel
627 dsd 1.53 get_version
628 swegener 1.29
629 mpagano 1.93 local versionh_path
630     if kernel_is -ge 3 7; then
631     versionh_path="include/generated/uapi/linux/version.h"
632     else
633     versionh_path="include/linux/version.h"
634     fi
635    
636     if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
637 johnm 1.1 then
638 johnm 1.16 eerror "These sources have not yet been prepared."
639     eerror "We cannot build against an unprepared tree."
640 johnm 1.1 eerror "To resolve this, please type the following:"
641     eerror
642     eerror "# cd ${KV_DIR}"
643     eerror "# make oldconfig"
644 johnm 1.16 eerror "# make modules_prepare"
645 johnm 1.1 eerror
646     eerror "Then please try merging this module again."
647     die "Kernel sources need compiling first"
648     fi
649     }
650    
651 dsd 1.56 # @FUNCTION: check_modules_supported
652     # @DESCRIPTION:
653     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
654 johnm 1.1 check_modules_supported() {
655     # if we haven't determined the version yet, we need too.
656 dsd 1.53 require_configured_kernel
657     get_version
658 swegener 1.29
659 vapier 1.94 if ! linux_chkconfig_builtin "MODULES"; then
660 johnm 1.1 eerror "These sources do not support loading external modules."
661     eerror "to be able to use this module please enable \"Loadable modules support\""
662     eerror "in your kernel, recompile and then try merging this module again."
663 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
664 johnm 1.3 fi
665     }
666    
667 dsd 1.56 # @FUNCTION: check_extra_config
668     # @DESCRIPTION:
669     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
670     # the prefix ~ is not used) doesn't satisfy the directive.
671 johnm 1.3 check_extra_config() {
672 vapier 1.94 local config negate die error reworkmodulenames
673     local soft_errors_count=0 hard_errors_count=0 config_required=0
674 robbat2 1.75 # store the value of the QA check, because otherwise we won't catch usages
675     # after if check_extra_config is called AND other direct calls are done
676     # later.
677 vapier 1.94 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
678 dsd 1.53
679 dsd 1.55 # if we haven't determined the version yet, we need to
680 robbat2 1.70 linux-info_get_any_version
681 dsd 1.55
682 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
683     # one is when all of the CONFIG_CHECK options are prefixed with "~".
684 vapier 1.94 for config in ${CONFIG_CHECK}; do
685 dsd 1.53 if [[ "${config:0:1}" != "~" ]]; then
686     config_required=1
687     break
688     fi
689     done
690    
691     if [[ ${config_required} == 0 ]]; then
692     # In the case where we don't require a .config, we can now bail out
693     # if the user has no .config as there is nothing to do. Otherwise
694     # code later will cause a failure due to missing .config.
695 robbat2 1.79 if ! linux_config_exists; then
696 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
697 robbat2 1.64 ewarn "to absence of any configured kernel sources or compiled"
698     ewarn "config:"
699 robbat2 1.60 for config in ${CONFIG_CHECK}; do
700 robbat2 1.77 local_error="ERROR_${config#\~}"
701     msg="${!local_error}"
702     if [[ "x${msg}" == "x" ]]; then
703     local_error="WARNING_${config#\~}"
704     msg="${!local_error}"
705     fi
706     ewarn " - ${config#\~}${msg:+ - }${msg}"
707 robbat2 1.60 done
708     ewarn "You're on your own to make sure they are set if needed."
709 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
710 dsd 1.53 return 0
711     fi
712     else
713 robbat2 1.79 require_configured_kernel
714 dsd 1.53 fi
715 johnm 1.3
716 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
717 maekke 1.58
718 johnm 1.3 for config in ${CONFIG_CHECK}
719     do
720 johnm 1.31 # if we specify any fatal, ensure we honor them
721     die=1
722     error=0
723     negate=0
724     reworkmodulenames=0
725    
726 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
727 mrness 1.45 die=0
728 johnm 1.31 config=${config:1}
729 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
730 mrness 1.45 die=0
731 johnm 1.31 reworkmodulenames=1
732     config=${config:1}
733     fi
734 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
735 mrness 1.45 negate=1
736 johnm 1.44 config=${config:1}
737     fi
738 johnm 1.17
739 johnm 1.31 if [[ ${negate} == 1 ]]; then
740     linux_chkconfig_present ${config} && error=2
741     elif [[ ${reworkmodulenames} == 1 ]]; then
742 mrness 1.45 local temp_config="${config//*:}" i n
743 johnm 1.17 config="${config//:*}"
744 johnm 1.31 if linux_chkconfig_present ${config}; then
745     for i in ${MODULE_NAMES}; do
746 johnm 1.17 n="${i//${temp_config}}"
747 dsd 1.38 [[ -z ${n//\(*} ]] && \
748 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
749 johnm 1.17 done
750 johnm 1.31 error=2
751 johnm 1.17 fi
752 johnm 1.3 else
753 johnm 1.31 linux_chkconfig_present ${config} || error=1
754     fi
755    
756 mrness 1.45 if [[ ${error} > 0 ]]; then
757     local report_func="eerror" local_error
758     local_error="ERROR_${config}"
759     local_error="${!local_error}"
760    
761     if [[ -z "${local_error}" ]]; then
762     # using old, deprecated format.
763     local_error="${config}_ERROR"
764     local_error="${!local_error}"
765     fi
766     if [[ ${die} == 0 && -z "${local_error}" ]]; then
767     #soft errors can be warnings
768     local_error="WARNING_${config}"
769 johnm 1.7 local_error="${!local_error}"
770 mrness 1.45 if [[ -n "${local_error}" ]] ; then
771     report_func="ewarn"
772 johnm 1.44 fi
773 mrness 1.45 fi
774 johnm 1.44
775 mrness 1.45 if [[ -z "${local_error}" ]]; then
776     [[ ${error} == 1 ]] \
777     && local_error="is not set when it should be." \
778     || local_error="should not be set. But it is."
779     local_error="CONFIG_${config}:\t ${local_error}"
780     fi
781     if [[ ${die} == 0 ]]; then
782     ${report_func} " ${local_error}"
783     soft_errors_count=$[soft_errors_count + 1]
784     else
785     ${report_func} " ${local_error}"
786     hard_errors_count=$[hard_errors_count + 1]
787 johnm 1.3 fi
788     fi
789     done
790    
791 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
792 johnm 1.3 eerror "Please check to make sure these options are set correctly."
793 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
794 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
795     eerror "this package again."
796 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
797 mrness 1.45 die "Incorrect kernel configuration options"
798     elif [[ ${soft_errors_count} > 0 ]]; then
799     ewarn "Please check to make sure these options are set correctly."
800     ewarn "Failure to do so may cause unexpected problems."
801     else
802     eend 0
803 johnm 1.1 fi
804 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
805 johnm 1.1 }
806    
807     check_zlibinflate() {
808 dsd 1.53 # if we haven't determined the version yet, we need to
809     require_configured_kernel
810     get_version
811 swegener 1.29
812 johnm 1.1 # although I restructured this code - I really really really dont support it!
813    
814     # bug #27882 - zlib routines are only linked into the kernel
815     # if something compiled into the kernel calls them
816     #
817     # plus, for the cloop module, it appears that there's no way
818     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
819     # is on
820 swegener 1.29
821     local INFLATE
822     local DEFLATE
823 johnm 1.1
824     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
825 swegener 1.29
826 johnm 1.1 ebegin "checking ZLIB_INFLATE"
827 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
828 johnm 1.1 eend $?
829     [ "$?" != 0 ] && die
830 swegener 1.29
831 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
832 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
833 johnm 1.1 eend $?
834     [ "$?" != 0 ] && die
835 swegener 1.29
836 johnm 1.1 local LINENO_START
837     local LINENO_END
838     local SYMBOLS
839     local x
840 swegener 1.29
841 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
842     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
843     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
844     (( LINENO_END = $LINENO_END - 1 ))
845 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
846 johnm 1.1
847     # okay, now we have a list of symbols
848     # we need to check each one in turn, to see whether it is set or not
849     for x in $SYMBOLS ; do
850     if [ "${!x}" = "y" ]; then
851     # we have a winner!
852     einfo "${x} ensures zlib is linked into your kernel - excellent"
853     return 0
854     fi
855     done
856 swegener 1.29
857 johnm 1.1 eerror
858     eerror "This kernel module requires ZLIB library support."
859     eerror "You have enabled zlib support in your kernel, but haven't enabled"
860     eerror "enabled any option that will ensure that zlib is linked into your"
861     eerror "kernel."
862     eerror
863     eerror "Please ensure that you enable at least one of these options:"
864     eerror
865    
866     for x in $SYMBOLS ; do
867     eerror " * $x"
868     done
869    
870     eerror
871     eerror "Please remember to recompile and install your kernel, and reboot"
872     eerror "into your new kernel before attempting to load this kernel module."
873    
874     die "Kernel doesn't include zlib support"
875     }
876 johnm 1.8
877     ################################
878     # Default pkg_setup
879     # Also used when inheriting linux-mod to force a get_version call
880 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
881     # @DESCRIPTION:
882     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
883     # to support the options specified in CONFIG_CHECK (if not null)
884 johnm 1.8 linux-info_pkg_setup() {
885 robbat2 1.66 linux-info_get_any_version
886 phreak 1.48
887     if kernel_is 2 4; then
888     if [ "$( gcc-major-version )" -eq "4" ] ; then
889     echo
890     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
891     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
892     echo
893     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
894     ewarn "newer kernel that supports gcc-4."
895     echo
896     ewarn "Also be aware that bugreports about gcc-4 not working"
897     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
898     echo
899     epause 10
900     fi
901     fi
902    
903 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
904 johnm 1.8 }

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