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Revision 1.84 - (hide annotations) (download)
Thu Jun 17 23:46:25 2010 UTC (4 years, 3 months ago) by abcd
Branch: MAIN
Changes since 1.83: +8 -2 lines
Add better support for finding out-of-tree builds when searching in /lib/modules

1 vapier 1.37 # Copyright 1999-2006 Gentoo Foundation
2 johnm 1.1 # Distributed under the terms of the GNU General Public License v2
3 abcd 1.84 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.83 2010/01/17 21:46:55 robbat2 Exp $
4 johnm 1.1 #
5 phreak 1.52 # Original author: John Mylchreest <johnm@gentoo.org>
6     # Maintainer: kernel-misc@gentoo.org
7 johnm 1.10 #
8     # Please direct your bugs to the current eclass maintainer :)
9    
10 dsd 1.56 # @ECLASS: linux-info.eclass
11     # @MAINTAINER:
12     # kernel-misc@gentoo.org
13     # @BLURB: eclass used for accessing kernel related information
14     # @DESCRIPTION:
15     # This eclass is used as a central eclass for accessing kernel
16 robbat2 1.62 # related information for source or binary already installed.
17 dsd 1.56 # It is vital for linux-mod.eclass to function correctly, and is split
18     # out so that any ebuild behaviour "templates" are abstracted out
19     # using additional eclasses.
20 robbat2 1.62 #
21     # "kernel config" in this file means:
22     # The .config of the currently installed sources is used as the first
23     # preference, with a fall-back to bundled config (/proc/config.gz) if available.
24 dsd 1.56
25 johnm 1.10 # A Couple of env vars are available to effect usage of this eclass
26     # These are as follows:
27 dsd 1.56
28     # @ECLASS-VARIABLE: KERNEL_DIR
29     # @DESCRIPTION:
30     # A string containing the directory of the target kernel sources. The default value is
31     # "/usr/src/linux"
32    
33     # @ECLASS-VARIABLE: CONFIG_CHECK
34     # @DESCRIPTION:
35     # A string containing a list of .config options to check for before
36     # proceeding with the install.
37     #
38     # e.g.: CONFIG_CHECK="MTRR"
39     #
40     # You can also check that an option doesn't exist by
41     # prepending it with an exclamation mark (!).
42     #
43     # e.g.: CONFIG_CHECK="!MTRR"
44     #
45 robbat2 1.62 # To simply warn about a missing option, prepend a '~'.
46     # It may be combined with '!'.
47     #
48     # In general, most checks should be non-fatal. The only time fatal checks should
49     # be used is for building kernel modules or cases that a compile will fail
50     # without the option.
51     #
52     # This is to allow usage of binary kernels, and minimal systems without kernel
53     # sources.
54 dsd 1.56
55     # @ECLASS-VARIABLE: ERROR_<CFG>
56     # @DESCRIPTION:
57     # A string containing the error message to display when the check against CONFIG_CHECK
58     # fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
59 swegener 1.29 #
60 dsd 1.56 # e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
61    
62     # @ECLASS-VARIABLE: KBUILD_OUTPUT
63     # @DESCRIPTION:
64     # A string passed on commandline, or set from the kernel makefile. It contains the directory
65     # which is to be used as the kernel object directory.
66 johnm 1.10
67     # There are also a couple of variables which are set by this, and shouldn't be
68     # set by hand. These are as follows:
69 dsd 1.56
70     # @ECLASS-VARIABLE: KV_FULL
71     # @DESCRIPTION:
72     # A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
73    
74     # @ECLASS-VARIABLE: KV_MAJOR
75     # @DESCRIPTION:
76     # A read-only variable. It's an integer containing the kernel major version. ie: 2
77    
78     # @ECLASS-VARIABLE: KV_MINOR
79     # @DESCRIPTION:
80     # A read-only variable. It's an integer containing the kernel minor version. ie: 6
81    
82     # @ECLASS-VARIABLE: KV_PATCH
83     # @DESCRIPTION:
84     # A read-only variable. It's an integer containing the kernel patch version. ie: 9
85    
86     # @ECLASS-VARIABLE: KV_EXTRA
87     # @DESCRIPTION:
88     # A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
89    
90     # @ECLASS-VARIABLE: KV_LOCAL
91     # @DESCRIPTION:
92     # A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
93    
94     # @ECLASS-VARIABLE: KV_DIR
95     # @DESCRIPTION:
96     # A read-only variable. It's a string containing the kernel source directory, will be null if
97     # KERNEL_DIR is invalid.
98    
99     # @ECLASS-VARIABLE: KV_OUT_DIR
100     # @DESCRIPTION:
101     # A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
102     # KBUILD_OUTPUT is used. This should be used for referencing .config.
103 johnm 1.10
104 johnm 1.21 # And to ensure all the weirdness with crosscompile
105 johnm 1.23 inherit toolchain-funcs versionator
106 johnm 1.1
107 johnm 1.8 EXPORT_FUNCTIONS pkg_setup
108 johnm 1.1
109 robbat2 1.65 DEPEND=""
110     RDEPEND=""
111    
112 johnm 1.1 # Overwritable environment Var's
113     # ---------------------------------------
114 johnm 1.21 KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
115 johnm 1.1
116 johnm 1.7
117 johnm 1.16 # Bug fixes
118     # fix to bug #75034
119     case ${ARCH} in
120 swegener 1.29 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
121     ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
122 johnm 1.16 esac
123    
124 vapier 1.51 # @FUNCTION: set_arch_to_kernel
125     # @DESCRIPTION:
126     # Set the env ARCH to match what the kernel expects.
127     set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
128     # @FUNCTION: set_arch_to_portage
129     # @DESCRIPTION:
130     # Set the env ARCH to match what portage expects.
131     set_arch_to_portage() { export ARCH=$(tc-arch); }
132 johnm 1.11
133     # qeinfo "Message"
134     # -------------------
135 johnm 1.21 # qeinfo is a quiet einfo call when EBUILD_PHASE
136 johnm 1.11 # should not have visible output.
137 johnm 1.21 qout() {
138     local outputmsg type
139     type=${1}
140     shift
141     outputmsg="${@}"
142 wolf31o2 1.26 case "${EBUILD_PHASE}" in
143     depend) unset outputmsg;;
144     clean) unset outputmsg;;
145     preinst) unset outputmsg;;
146     esac
147     [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
148 johnm 1.11 }
149    
150 johnm 1.21 qeinfo() { qout einfo "${@}" ; }
151 robbat2 1.82 qewarn() { qout ewarn "${@}" ; }
152 johnm 1.21 qeerror() { qout eerror "${@}" ; }
153 johnm 1.11
154 johnm 1.1 # File Functions
155     # ---------------------------------------
156    
157 dsd 1.56 # @FUNCTION: getfilevar
158     # @USAGE: variable configfile
159     # @RETURN: the value of the variable
160     # @DESCRIPTION:
161 robbat2 1.61 # It detects the value of the variable defined in the file configfile. This is
162     # done by including the configfile, and printing the variable with Make.
163     # It WILL break if your makefile has missing dependencies!
164 johnm 1.1 getfilevar() {
165 dsd 1.57 local ERROR basefname basedname myARCH="${ARCH}"
166 johnm 1.1 ERROR=0
167 johnm 1.16
168 johnm 1.1 [ -z "${1}" ] && ERROR=1
169     [ ! -f "${2}" ] && ERROR=1
170    
171     if [ "${ERROR}" = 1 ]
172     then
173 johnm 1.6 echo -e "\n"
174 johnm 1.1 eerror "getfilevar requires 2 variables, with the second a valid file."
175     eerror " getfilevar <VARIABLE> <CONFIGFILE>"
176     else
177 johnm 1.34 basefname="$(basename ${2})"
178     basedname="$(dirname ${2})"
179 johnm 1.6 unset ARCH
180 johnm 1.21
181 johnm 1.42 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
182 dsd 1.57 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
183 johnm 1.21
184     ARCH=${myARCH}
185 johnm 1.1 fi
186     }
187    
188 robbat2 1.61 # @FUNCTION: getfilevar_noexec
189     # @USAGE: variable configfile
190     # @RETURN: the value of the variable
191     # @DESCRIPTION:
192     # It detects the value of the variable defined in the file configfile.
193     # This is done with sed matching an expression only. If the variable is defined,
194     # you will run into problems. See getfilevar for those cases.
195     getfilevar_noexec() {
196 robbat2 1.62 local ERROR basefname basedname mycat myARCH="${ARCH}"
197 robbat2 1.61 ERROR=0
198 robbat2 1.62 mycat='cat'
199 robbat2 1.61
200     [ -z "${1}" ] && ERROR=1
201     [ ! -f "${2}" ] && ERROR=1
202 robbat2 1.64 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
203 robbat2 1.61
204     if [ "${ERROR}" = 1 ]
205     then
206     echo -e "\n"
207     eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
208     eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
209     else
210 robbat2 1.62 ${mycat} "${2}" | \
211 robbat2 1.61 sed -n \
212 robbat2 1.82 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
213 robbat2 1.61 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
214     s,[[:space:]]*\$,,g ;
215     p
216 robbat2 1.62 }"
217 robbat2 1.61 fi
218     }
219    
220 robbat2 1.75 # @PRIVATE-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
221     # @DESCRIPTION:
222     # This is only set if one of the linux_config_*exists functions has been called.
223     # We use it for a QA warning that the check for a config has not been performed,
224     # as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
225     # config is available at all.
226     _LINUX_CONFIG_EXISTS_DONE=
227    
228     linux_config_qa_check() {
229 robbat2 1.76 local f="$1"
230 robbat2 1.75 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
231 robbat2 1.76 ewarn "QA: You called $f before any linux_config_exists!"
232     ewarn "QA: The return value of $f will NOT gaurenteed later!"
233 robbat2 1.75 fi
234     }
235 dsd 1.53
236 robbat2 1.62 # @FUNCTION: linux_config_src_exists
237     # @RETURN: true or false
238     # @DESCRIPTION:
239     # It returns true if .config exists in a build directory otherwise false
240     linux_config_src_exists() {
241 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
242 robbat2 1.62 [ -s "${KV_OUT_DIR}/.config" ]
243     }
244    
245     # @FUNCTION: linux_config_bin_exists
246     # @RETURN: true or false
247     # @DESCRIPTION:
248     # It returns true if .config exists in /proc, otherwise false
249     linux_config_bin_exists() {
250 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
251 robbat2 1.79 [ -s "/proc/config.gz" ]
252 robbat2 1.62 }
253    
254 dsd 1.56 # @FUNCTION: linux_config_exists
255     # @RETURN: true or false
256     # @DESCRIPTION:
257     # It returns true if .config exists otherwise false
258 robbat2 1.62 #
259     # This function MUST be checked before using any of the linux_chkconfig_*
260     # functions.
261 dsd 1.53 linux_config_exists() {
262 robbat2 1.62 linux_config_src_exists || linux_config_bin_exists
263 dsd 1.53 }
264    
265 dsd 1.56 # @FUNCTION: require_configured_kernel
266     # @DESCRIPTION:
267     # This function verifies that the current kernel is configured (it checks against the existence of .config)
268     # otherwise it dies.
269 dsd 1.53 require_configured_kernel() {
270 robbat2 1.62 if ! linux_config_src_exists; then
271 dsd 1.53 qeerror "Could not find a usable .config in the kernel source directory."
272     qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
273     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
274     qeerror "it points to the necessary object directory so that it might find .config."
275     die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
276     fi
277     }
278    
279 dsd 1.56 # @FUNCTION: linux_chkconfig_present
280     # @USAGE: option
281     # @RETURN: true or false
282     # @DESCRIPTION:
283 loki_val 1.59 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
284 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
285     # MUST call linux_config_exists first.
286 johnm 1.7 linux_chkconfig_present() {
287 robbat2 1.76 linux_config_qa_check linux_chkconfig_present
288 robbat2 1.75 local RESULT
289 robbat2 1.62 local config
290     config="${KV_OUT_DIR}/.config"
291     [ ! -f "${config}" ] && config="/proc/config.gz"
292     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
293 johnm 1.1 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
294     }
295    
296 dsd 1.56 # @FUNCTION: linux_chkconfig_module
297     # @USAGE: option
298     # @RETURN: true or false
299     # @DESCRIPTION:
300     # It checks that CONFIG_<option>=m is present in the current kernel .config
301 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
302     # MUST call linux_config_exists first.
303 johnm 1.7 linux_chkconfig_module() {
304 robbat2 1.76 linux_config_qa_check linux_chkconfig_module
305 robbat2 1.75 local RESULT
306 robbat2 1.62 local config
307     config="${KV_OUT_DIR}/.config"
308     [ ! -f "${config}" ] && config="/proc/config.gz"
309     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
310 johnm 1.1 [ "${RESULT}" = "m" ] && return 0 || return 1
311     }
312    
313 dsd 1.56 # @FUNCTION: linux_chkconfig_builtin
314     # @USAGE: option
315     # @RETURN: true or false
316     # @DESCRIPTION:
317     # It checks that CONFIG_<option>=y 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_builtin() {
321 robbat2 1.76 linux_config_qa_check linux_chkconfig_builtin
322 robbat2 1.75 local RESULT
323 robbat2 1.62 local config
324     config="${KV_OUT_DIR}/.config"
325     [ ! -f "${config}" ] && config="/proc/config.gz"
326     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
327 johnm 1.1 [ "${RESULT}" = "y" ] && return 0 || return 1
328     }
329    
330 dsd 1.56 # @FUNCTION: linux_chkconfig_string
331     # @USAGE: option
332     # @RETURN: CONFIG_<option>
333     # @DESCRIPTION:
334     # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
335 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
336     # MUST call linux_config_exists first.
337 johnm 1.7 linux_chkconfig_string() {
338 robbat2 1.76 linux_config_qa_check linux_chkconfig_string
339 robbat2 1.62 local config
340     config="${KV_OUT_DIR}/.config"
341     [ ! -f "${config}" ] && config="/proc/config.gz"
342     getfilevar_noexec "CONFIG_${1}" "${config}"
343 johnm 1.7 }
344    
345 johnm 1.1 # Versioning Functions
346     # ---------------------------------------
347    
348 dsd 1.56 # @FUNCTION: kernel_is
349     # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
350     # @RETURN: true or false
351     # @DESCRIPTION:
352     # It returns true when the current kernel version satisfies the comparison against the passed version.
353     # -eq is the default comparison.
354 johnm 1.1 #
355 dsd 1.56 # @CODE
356 johnm 1.1 # For Example where KV = 2.6.9
357 dsd 1.56 # kernel_is 2 4 returns false
358     # kernel_is 2 returns true
359     # kernel_is 2 6 returns true
360     # kernel_is 2 6 8 returns false
361     # kernel_is 2 6 9 returns true
362     # @CODE
363    
364 johnm 1.1 # got the jist yet?
365    
366     kernel_is() {
367 dsd 1.53 # if we haven't determined the version yet, we need to.
368 robbat2 1.69 linux-info_get_any_version
369    
370 robbat2 1.80 local operator testagainst value x=0 y=0 z=0
371 johnm 1.23
372     case ${1} in
373 robbat2 1.68 -lt|lt) operator="-lt"; shift;;
374     -gt|gt) operator="-gt"; shift;;
375     -le|le) operator="-le"; shift;;
376     -ge|ge) operator="-ge"; shift;;
377     -eq|eq) operator="-eq"; shift;;
378     *) operator="-eq";;
379 johnm 1.23 esac
380    
381     for x in ${@}; do
382     for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
383     value="${value}${x}"
384     z=$((${z} + 1))
385    
386     case ${z} in
387 robbat2 1.80 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do testagainst="${testagainst}0"; done;
388     testagainst="${testagainst}${KV_MAJOR}";;
389     2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do testagainst="${testagainst}0"; done;
390     testagainst="${testagainst}${KV_MINOR}";;
391     3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do testagainst="${testagainst}0"; done;
392     testagainst="${testagainst}${KV_PATCH}";;
393 johnm 1.23 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
394     esac
395     done
396 maekke 1.73
397 robbat2 1.80 [ "${testagainst}" ${operator} "${value}" ] && return 0 || return 1
398 johnm 1.1 }
399    
400 johnm 1.30 get_localversion() {
401     local lv_list i x
402    
403     # ignore files with ~ in it.
404     for i in $(ls ${1}/localversion* 2>/dev/null); do
405     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
406     done
407    
408     for i in ${lv_list}; do
409     x="${x}$(<${i})"
410     done
411     x=${x/ /}
412     echo ${x}
413     }
414    
415 robbat2 1.83 # Check if the Makefile is valid for direct parsing.
416     # Check status results:
417     # - PASS, use 'getfilevar' to extract values
418     # - FAIL, use 'getfilevar_noexec' to extract values
419     # The check may fail if:
420     # - make is not present
421     # - corruption exists in the kernel makefile
422     get_makefile_extract_function() {
423     local a='' b='' mkfunc='getfilevar'
424     a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
425     b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
426     [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
427     echo "${mkfunc}"
428     }
429    
430 robbat2 1.63 # internal variable, so we know to only print the warning once
431     get_version_warning_done=
432    
433 dsd 1.56 # @FUNCTION: get_version
434     # @DESCRIPTION:
435     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
436     # (if KV_FULL is already set it does nothing).
437     #
438     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
439     #
440     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
441     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
442     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
443 johnm 1.1 get_version() {
444 robbat2 1.83 local kbuild_output mkfunc
445 swegener 1.29
446 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
447     # we can force by unsetting KV_FULL
448 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
449 johnm 1.1
450     # if we dont know KV_FULL, then we need too.
451     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
452     unset KV_DIR
453    
454     # KV_DIR will contain the full path to the sources directory we should use
455 robbat2 1.63 [ -z "${get_version_warning_done}" ] && \
456 johnm 1.11 qeinfo "Determining the location of the kernel source code"
457 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
458     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
459 swegener 1.29
460 johnm 1.1 if [ -z "${KV_DIR}" ]
461     then
462 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
463     get_version_warning_done=1
464     qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
465     #qeinfo "This package requires Linux sources."
466     if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
467     qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
468     qeinfo "(or the kernel you wish to build against)."
469     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
470     else
471     qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
472     fi
473 johnm 1.7 fi
474 johnm 1.19 return 1
475 johnm 1.7 fi
476    
477 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
478     qeinfo "Found kernel source directory:"
479     qeinfo " ${KV_DIR}"
480     fi
481 johnm 1.7
482     if [ ! -s "${KV_DIR}/Makefile" ]
483     then
484 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
485     get_version_warning_done=1
486     qeerror "Could not find a Makefile in the kernel source directory."
487     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
488     fi
489 johnm 1.19 return 1
490 johnm 1.7 fi
491 swegener 1.29
492 johnm 1.4 # OK so now we know our sources directory, but they might be using
493     # KBUILD_OUTPUT, and we need this for .config and localversions-*
494     # so we better find it eh?
495     # do we pass KBUILD_OUTPUT on the CLI?
496     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
497 swegener 1.29
498 robbat2 1.78 # keep track of it
499     KERNEL_MAKEFILE="${KV_DIR}/Makefile"
500 robbat2 1.83
501     # Decide the function used to extract makefile variables.
502     mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
503 robbat2 1.78
504 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
505 robbat2 1.78 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
506 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
507 swegener 1.29
508 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
509     # directory name to find version information as this seems insane.
510 robbat2 1.78 # so we parse ${KERNEL_MAKEFILE}
511     KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
512     KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
513     KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
514     KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
515 swegener 1.29
516 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
517     then
518 robbat2 1.63 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 ${KERNEL_DIR} points to a complete set of Linux sources."
522     fi
523 johnm 1.19 return 1
524 johnm 1.7 fi
525 swegener 1.29
526 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
527 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
528     # This *WILL* break if the user is using localversions, but we assume it was
529     # caught before this if they are.
530 robbat2 1.81 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
531 johnm 1.4
532     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
533     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
534     if [ -n "${KV_OUT_DIR}" ];
535     then
536 johnm 1.11 qeinfo "Found kernel object directory:"
537     qeinfo " ${KV_OUT_DIR}"
538 swegener 1.29
539 johnm 1.30 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
540 johnm 1.4 fi
541 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
542 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
543 johnm 1.21
544 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
545 robbat2 1.71 if linux_config_src_exists; then
546 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
547     KV_LOCAL="${KV_LOCAL//\"/}"
548    
549     # For things like git that can append extra stuff:
550     [ -e ${KV_DIR}/scripts/setlocalversion ] &&
551     linux_chkconfig_builtin LOCALVERSION_AUTO &&
552     KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
553 johnm 1.41 fi
554    
555 johnm 1.1 # And we should set KV_FULL to the full expanded version
556     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
557 johnm 1.21
558 johnm 1.11 qeinfo "Found sources for kernel version:"
559     qeinfo " ${KV_FULL}"
560 johnm 1.21
561 johnm 1.19 return 0
562 johnm 1.1 }
563    
564 dsd 1.56 # @FUNCTION: get_running_version
565     # @DESCRIPTION:
566     # It gets the version of the current running kernel and the result is the same as get_version() if the
567     # function can find the sources.
568 johnm 1.23 get_running_version() {
569     KV_FULL=$(uname -r)
570 johnm 1.1
571 abcd 1.84 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
572     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
573     KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
574     unset KV_FULL
575     get_version
576     return $?
577     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
578 johnm 1.23 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
579     unset KV_FULL
580     get_version
581     return $?
582     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
583     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
584     unset KV_FULL
585     get_version
586     return $?
587     else
588     KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
589     KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
590     KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
591     KV_PATCH=${KV_PATCH//-*}
592     [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
593     && KV_EXTRA="-${KV_FULL#*-}"
594     fi
595     return 0
596     }
597 johnm 1.1
598 robbat2 1.66 # This next function is named with the eclass prefix to avoid conflicts with
599     # some old versionator-like eclass functions.
600    
601     # @FUNCTION: linux-info_get_any_version
602     # @DESCRIPTION:
603     # This attempts to find the version of the sources, and otherwise falls back to
604     # the version of the running kernel.
605     linux-info_get_any_version() {
606 maekke 1.73 get_version
607 robbat2 1.67 if [[ $? -ne 0 ]]; then
608 robbat2 1.66 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
609 maekke 1.73 get_running_version
610 robbat2 1.66 fi
611     }
612    
613 johnm 1.1
614     # ebuild check functions
615     # ---------------------------------------
616    
617 dsd 1.56 # @FUNCTION: check_kernel_built
618     # @DESCRIPTION:
619     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
620 johnm 1.1 check_kernel_built() {
621 dsd 1.53 # if we haven't determined the version yet, we need to
622 dsd 1.54 require_configured_kernel
623 dsd 1.53 get_version
624 swegener 1.29
625 johnm 1.16 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
626 johnm 1.1 then
627 johnm 1.16 eerror "These sources have not yet been prepared."
628     eerror "We cannot build against an unprepared tree."
629 johnm 1.1 eerror "To resolve this, please type the following:"
630     eerror
631     eerror "# cd ${KV_DIR}"
632     eerror "# make oldconfig"
633 johnm 1.16 eerror "# make modules_prepare"
634 johnm 1.1 eerror
635     eerror "Then please try merging this module again."
636     die "Kernel sources need compiling first"
637     fi
638     }
639    
640 dsd 1.56 # @FUNCTION: check_modules_supported
641     # @DESCRIPTION:
642     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
643 johnm 1.1 check_modules_supported() {
644     # if we haven't determined the version yet, we need too.
645 dsd 1.53 require_configured_kernel
646     get_version
647 swegener 1.29
648 johnm 1.7 if ! linux_chkconfig_builtin "MODULES"
649 johnm 1.1 then
650     eerror "These sources do not support loading external modules."
651     eerror "to be able to use this module please enable \"Loadable modules support\""
652     eerror "in your kernel, recompile and then try merging this module again."
653 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
654 johnm 1.3 fi
655     }
656    
657 dsd 1.56 # @FUNCTION: check_extra_config
658     # @DESCRIPTION:
659     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
660     # the prefix ~ is not used) doesn't satisfy the directive.
661 johnm 1.3 check_extra_config() {
662 mrness 1.45 local config negate die error reworkmodulenames
663 dsd 1.53 local soft_errors_count=0 hard_errors_count=0 config_required=0
664 robbat2 1.75 # store the value of the QA check, because otherwise we won't catch usages
665     # after if check_extra_config is called AND other direct calls are done
666     # later.
667     local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
668 dsd 1.53
669 dsd 1.55 # if we haven't determined the version yet, we need to
670 robbat2 1.70 linux-info_get_any_version
671 dsd 1.55
672 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
673     # one is when all of the CONFIG_CHECK options are prefixed with "~".
674     for config in ${CONFIG_CHECK}
675     do
676     if [[ "${config:0:1}" != "~" ]]; then
677     config_required=1
678     break
679     fi
680     done
681    
682     if [[ ${config_required} == 0 ]]; then
683     # In the case where we don't require a .config, we can now bail out
684     # if the user has no .config as there is nothing to do. Otherwise
685     # code later will cause a failure due to missing .config.
686 robbat2 1.79 if ! linux_config_exists; then
687 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
688 robbat2 1.64 ewarn "to absence of any configured kernel sources or compiled"
689     ewarn "config:"
690 robbat2 1.60 for config in ${CONFIG_CHECK}; do
691 robbat2 1.77 local_error="ERROR_${config#\~}"
692     msg="${!local_error}"
693     if [[ "x${msg}" == "x" ]]; then
694     local_error="WARNING_${config#\~}"
695     msg="${!local_error}"
696     fi
697     ewarn " - ${config#\~}${msg:+ - }${msg}"
698 robbat2 1.60 done
699     ewarn "You're on your own to make sure they are set if needed."
700 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
701 dsd 1.53 return 0
702     fi
703     else
704 robbat2 1.79 require_configured_kernel
705 dsd 1.53 fi
706 johnm 1.3
707 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
708 maekke 1.58
709 johnm 1.3 for config in ${CONFIG_CHECK}
710     do
711 johnm 1.31 # if we specify any fatal, ensure we honor them
712     die=1
713     error=0
714     negate=0
715     reworkmodulenames=0
716    
717 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
718 mrness 1.45 die=0
719 johnm 1.31 config=${config:1}
720 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
721 mrness 1.45 die=0
722 johnm 1.31 reworkmodulenames=1
723     config=${config:1}
724     fi
725 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
726 mrness 1.45 negate=1
727 johnm 1.44 config=${config:1}
728     fi
729 johnm 1.17
730 johnm 1.31 if [[ ${negate} == 1 ]]; then
731     linux_chkconfig_present ${config} && error=2
732     elif [[ ${reworkmodulenames} == 1 ]]; then
733 mrness 1.45 local temp_config="${config//*:}" i n
734 johnm 1.17 config="${config//:*}"
735 johnm 1.31 if linux_chkconfig_present ${config}; then
736     for i in ${MODULE_NAMES}; do
737 johnm 1.17 n="${i//${temp_config}}"
738 dsd 1.38 [[ -z ${n//\(*} ]] && \
739 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
740 johnm 1.17 done
741 johnm 1.31 error=2
742 johnm 1.17 fi
743 johnm 1.3 else
744 johnm 1.31 linux_chkconfig_present ${config} || error=1
745     fi
746    
747 mrness 1.45 if [[ ${error} > 0 ]]; then
748     local report_func="eerror" local_error
749     local_error="ERROR_${config}"
750     local_error="${!local_error}"
751    
752     if [[ -z "${local_error}" ]]; then
753     # using old, deprecated format.
754     local_error="${config}_ERROR"
755     local_error="${!local_error}"
756     fi
757     if [[ ${die} == 0 && -z "${local_error}" ]]; then
758     #soft errors can be warnings
759     local_error="WARNING_${config}"
760 johnm 1.7 local_error="${!local_error}"
761 mrness 1.45 if [[ -n "${local_error}" ]] ; then
762     report_func="ewarn"
763 johnm 1.44 fi
764 mrness 1.45 fi
765 johnm 1.44
766 mrness 1.45 if [[ -z "${local_error}" ]]; then
767     [[ ${error} == 1 ]] \
768     && local_error="is not set when it should be." \
769     || local_error="should not be set. But it is."
770     local_error="CONFIG_${config}:\t ${local_error}"
771     fi
772     if [[ ${die} == 0 ]]; then
773     ${report_func} " ${local_error}"
774     soft_errors_count=$[soft_errors_count + 1]
775     else
776     ${report_func} " ${local_error}"
777     hard_errors_count=$[hard_errors_count + 1]
778 johnm 1.3 fi
779     fi
780     done
781    
782 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
783 johnm 1.3 eerror "Please check to make sure these options are set correctly."
784 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
785 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
786     eerror "this package again."
787 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
788 mrness 1.45 die "Incorrect kernel configuration options"
789     elif [[ ${soft_errors_count} > 0 ]]; then
790     ewarn "Please check to make sure these options are set correctly."
791     ewarn "Failure to do so may cause unexpected problems."
792     else
793     eend 0
794 johnm 1.1 fi
795 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
796 johnm 1.1 }
797    
798     check_zlibinflate() {
799 dsd 1.53 # if we haven't determined the version yet, we need to
800     require_configured_kernel
801     get_version
802 swegener 1.29
803 johnm 1.1 # although I restructured this code - I really really really dont support it!
804    
805     # bug #27882 - zlib routines are only linked into the kernel
806     # if something compiled into the kernel calls them
807     #
808     # plus, for the cloop module, it appears that there's no way
809     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
810     # is on
811 swegener 1.29
812     local INFLATE
813     local DEFLATE
814 johnm 1.1
815     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
816 swegener 1.29
817 johnm 1.1 ebegin "checking ZLIB_INFLATE"
818 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
819 johnm 1.1 eend $?
820     [ "$?" != 0 ] && die
821 swegener 1.29
822 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
823 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
824 johnm 1.1 eend $?
825     [ "$?" != 0 ] && die
826 swegener 1.29
827 johnm 1.1 local LINENO_START
828     local LINENO_END
829     local SYMBOLS
830     local x
831 swegener 1.29
832 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
833     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
834     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
835     (( LINENO_END = $LINENO_END - 1 ))
836 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
837 johnm 1.1
838     # okay, now we have a list of symbols
839     # we need to check each one in turn, to see whether it is set or not
840     for x in $SYMBOLS ; do
841     if [ "${!x}" = "y" ]; then
842     # we have a winner!
843     einfo "${x} ensures zlib is linked into your kernel - excellent"
844     return 0
845     fi
846     done
847 swegener 1.29
848 johnm 1.1 eerror
849     eerror "This kernel module requires ZLIB library support."
850     eerror "You have enabled zlib support in your kernel, but haven't enabled"
851     eerror "enabled any option that will ensure that zlib is linked into your"
852     eerror "kernel."
853     eerror
854     eerror "Please ensure that you enable at least one of these options:"
855     eerror
856    
857     for x in $SYMBOLS ; do
858     eerror " * $x"
859     done
860    
861     eerror
862     eerror "Please remember to recompile and install your kernel, and reboot"
863     eerror "into your new kernel before attempting to load this kernel module."
864    
865     die "Kernel doesn't include zlib support"
866     }
867 johnm 1.8
868     ################################
869     # Default pkg_setup
870     # Also used when inheriting linux-mod to force a get_version call
871 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
872     # @DESCRIPTION:
873     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
874     # to support the options specified in CONFIG_CHECK (if not null)
875 johnm 1.8 linux-info_pkg_setup() {
876 robbat2 1.66 linux-info_get_any_version
877 phreak 1.48
878     if kernel_is 2 4; then
879     if [ "$( gcc-major-version )" -eq "4" ] ; then
880     echo
881     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
882     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
883     echo
884     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
885     ewarn "newer kernel that supports gcc-4."
886     echo
887     ewarn "Also be aware that bugreports about gcc-4 not working"
888     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
889     echo
890     epause 10
891     fi
892     fi
893    
894 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
895 johnm 1.8 }

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