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Revision 1.79 - (hide annotations) (download)
Sun Jan 10 09:01:38 2010 UTC (4 years, 11 months ago) by robbat2
Branch: MAIN
Changes since 1.78: +4 -17 lines
Bug #283320: major change now, as warned about 1 month ago in http://thread.gmane.org/gmane.linux.gentoo.devel/64125. ALL linux_chkconfig calls MUST be preceeded by a linux_config*exists function. CONFIG_CHECK warning mode (~) no longer requires existence of kernel sources or any configuration. The eclass no longer introduces linux-sources into the dependency tree.

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 robbat2 1.79 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.78 2010/01/10 08:47:01 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 "${@}" ; }
151     qeerror() { qout eerror "${@}" ; }
152 johnm 1.11
153 johnm 1.1 # File Functions
154     # ---------------------------------------
155    
156 dsd 1.56 # @FUNCTION: getfilevar
157     # @USAGE: variable configfile
158     # @RETURN: the value of the variable
159     # @DESCRIPTION:
160 robbat2 1.61 # It detects the value of the variable defined in the file configfile. This is
161     # done by including the configfile, and printing the variable with Make.
162     # It WILL break if your makefile has missing dependencies!
163 johnm 1.1 getfilevar() {
164 dsd 1.57 local ERROR basefname basedname myARCH="${ARCH}"
165 johnm 1.1 ERROR=0
166 johnm 1.16
167 johnm 1.1 [ -z "${1}" ] && ERROR=1
168     [ ! -f "${2}" ] && ERROR=1
169    
170     if [ "${ERROR}" = 1 ]
171     then
172 johnm 1.6 echo -e "\n"
173 johnm 1.1 eerror "getfilevar requires 2 variables, with the second a valid file."
174     eerror " getfilevar <VARIABLE> <CONFIGFILE>"
175     else
176 johnm 1.34 basefname="$(basename ${2})"
177     basedname="$(dirname ${2})"
178 johnm 1.6 unset ARCH
179 johnm 1.21
180 johnm 1.42 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
181 dsd 1.57 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
182 johnm 1.21
183     ARCH=${myARCH}
184 johnm 1.1 fi
185     }
186    
187 robbat2 1.61 # @FUNCTION: getfilevar_noexec
188     # @USAGE: variable configfile
189     # @RETURN: the value of the variable
190     # @DESCRIPTION:
191     # It detects the value of the variable defined in the file configfile.
192     # This is done with sed matching an expression only. If the variable is defined,
193     # you will run into problems. See getfilevar for those cases.
194     getfilevar_noexec() {
195 robbat2 1.62 local ERROR basefname basedname mycat myARCH="${ARCH}"
196 robbat2 1.61 ERROR=0
197 robbat2 1.62 mycat='cat'
198 robbat2 1.61
199     [ -z "${1}" ] && ERROR=1
200     [ ! -f "${2}" ] && ERROR=1
201 robbat2 1.64 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
202 robbat2 1.61
203     if [ "${ERROR}" = 1 ]
204     then
205     echo -e "\n"
206     eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
207     eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
208     else
209 robbat2 1.62 ${mycat} "${2}" | \
210 robbat2 1.61 sed -n \
211     -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
212     s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
213     s,[[:space:]]*\$,,g ;
214     p
215 robbat2 1.62 }"
216 robbat2 1.61 fi
217     }
218    
219 robbat2 1.75 # @PRIVATE-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
220     # @DESCRIPTION:
221     # This is only set if one of the linux_config_*exists functions has been called.
222     # We use it for a QA warning that the check for a config has not been performed,
223     # as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
224     # config is available at all.
225     _LINUX_CONFIG_EXISTS_DONE=
226    
227     linux_config_qa_check() {
228 robbat2 1.76 local f="$1"
229 robbat2 1.75 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
230 robbat2 1.76 ewarn "QA: You called $f before any linux_config_exists!"
231     ewarn "QA: The return value of $f will NOT gaurenteed later!"
232 robbat2 1.75 fi
233     }
234 dsd 1.53
235 robbat2 1.62 # @FUNCTION: linux_config_src_exists
236     # @RETURN: true or false
237     # @DESCRIPTION:
238     # It returns true if .config exists in a build directory otherwise false
239     linux_config_src_exists() {
240 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
241 robbat2 1.62 [ -s "${KV_OUT_DIR}/.config" ]
242     }
243    
244     # @FUNCTION: linux_config_bin_exists
245     # @RETURN: true or false
246     # @DESCRIPTION:
247     # It returns true if .config exists in /proc, otherwise false
248     linux_config_bin_exists() {
249 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
250 robbat2 1.79 [ -s "/proc/config.gz" ]
251 robbat2 1.62 }
252    
253 dsd 1.56 # @FUNCTION: linux_config_exists
254     # @RETURN: true or false
255     # @DESCRIPTION:
256     # It returns true if .config exists otherwise false
257 robbat2 1.62 #
258     # This function MUST be checked before using any of the linux_chkconfig_*
259     # functions.
260 dsd 1.53 linux_config_exists() {
261 robbat2 1.62 linux_config_src_exists || linux_config_bin_exists
262 dsd 1.53 }
263    
264 dsd 1.56 # @FUNCTION: require_configured_kernel
265     # @DESCRIPTION:
266     # This function verifies that the current kernel is configured (it checks against the existence of .config)
267     # otherwise it dies.
268 dsd 1.53 require_configured_kernel() {
269 robbat2 1.62 if ! linux_config_src_exists; then
270 dsd 1.53 qeerror "Could not find a usable .config in the kernel source directory."
271     qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
272     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
273     qeerror "it points to the necessary object directory so that it might find .config."
274     die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
275     fi
276     }
277    
278 dsd 1.56 # @FUNCTION: linux_chkconfig_present
279     # @USAGE: option
280     # @RETURN: true or false
281     # @DESCRIPTION:
282 loki_val 1.59 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
283 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
284     # MUST call linux_config_exists first.
285 johnm 1.7 linux_chkconfig_present() {
286 robbat2 1.76 linux_config_qa_check linux_chkconfig_present
287 robbat2 1.75 local RESULT
288 robbat2 1.62 local config
289     config="${KV_OUT_DIR}/.config"
290     [ ! -f "${config}" ] && config="/proc/config.gz"
291     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
292 johnm 1.1 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
293     }
294    
295 dsd 1.56 # @FUNCTION: linux_chkconfig_module
296     # @USAGE: option
297     # @RETURN: true or false
298     # @DESCRIPTION:
299     # It checks that CONFIG_<option>=m is present in the current kernel .config
300 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
301     # MUST call linux_config_exists first.
302 johnm 1.7 linux_chkconfig_module() {
303 robbat2 1.76 linux_config_qa_check linux_chkconfig_module
304 robbat2 1.75 local RESULT
305 robbat2 1.62 local config
306     config="${KV_OUT_DIR}/.config"
307     [ ! -f "${config}" ] && config="/proc/config.gz"
308     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
309 johnm 1.1 [ "${RESULT}" = "m" ] && return 0 || return 1
310     }
311    
312 dsd 1.56 # @FUNCTION: linux_chkconfig_builtin
313     # @USAGE: option
314     # @RETURN: true or false
315     # @DESCRIPTION:
316     # It checks that CONFIG_<option>=y is present in the current kernel .config
317 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
318     # MUST call linux_config_exists first.
319 johnm 1.7 linux_chkconfig_builtin() {
320 robbat2 1.76 linux_config_qa_check linux_chkconfig_builtin
321 robbat2 1.75 local RESULT
322 robbat2 1.62 local config
323     config="${KV_OUT_DIR}/.config"
324     [ ! -f "${config}" ] && config="/proc/config.gz"
325     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
326 johnm 1.1 [ "${RESULT}" = "y" ] && return 0 || return 1
327     }
328    
329 dsd 1.56 # @FUNCTION: linux_chkconfig_string
330     # @USAGE: option
331     # @RETURN: CONFIG_<option>
332     # @DESCRIPTION:
333     # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
334 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
335     # MUST call linux_config_exists first.
336 johnm 1.7 linux_chkconfig_string() {
337 robbat2 1.76 linux_config_qa_check linux_chkconfig_string
338 robbat2 1.62 local config
339     config="${KV_OUT_DIR}/.config"
340     [ ! -f "${config}" ] && config="/proc/config.gz"
341     getfilevar_noexec "CONFIG_${1}" "${config}"
342 johnm 1.7 }
343    
344 johnm 1.1 # Versioning Functions
345     # ---------------------------------------
346    
347 dsd 1.56 # @FUNCTION: kernel_is
348     # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
349     # @RETURN: true or false
350     # @DESCRIPTION:
351     # It returns true when the current kernel version satisfies the comparison against the passed version.
352     # -eq is the default comparison.
353 johnm 1.1 #
354 dsd 1.56 # @CODE
355 johnm 1.1 # For Example where KV = 2.6.9
356 dsd 1.56 # kernel_is 2 4 returns false
357     # kernel_is 2 returns true
358     # kernel_is 2 6 returns true
359     # kernel_is 2 6 8 returns false
360     # kernel_is 2 6 9 returns true
361     # @CODE
362    
363 johnm 1.1 # got the jist yet?
364    
365     kernel_is() {
366 dsd 1.53 # if we haven't determined the version yet, we need to.
367 robbat2 1.69 linux-info_get_any_version
368    
369 johnm 1.23 local operator test value x=0 y=0 z=0
370    
371     case ${1} in
372 robbat2 1.68 -lt|lt) operator="-lt"; shift;;
373     -gt|gt) operator="-gt"; shift;;
374     -le|le) operator="-le"; shift;;
375     -ge|ge) operator="-ge"; shift;;
376     -eq|eq) operator="-eq"; shift;;
377     *) operator="-eq";;
378 johnm 1.23 esac
379    
380     for x in ${@}; do
381     for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
382     value="${value}${x}"
383     z=$((${z} + 1))
384    
385     case ${z} in
386     1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
387     test="${test}${KV_MAJOR}";;
388     2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
389     test="${test}${KV_MINOR}";;
390     3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
391     test="${test}${KV_PATCH}";;
392     *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
393     esac
394     done
395 maekke 1.73
396 swegener 1.29 [ ${test} ${operator} ${value} ] && return 0 || return 1
397 johnm 1.1 }
398    
399 johnm 1.30 get_localversion() {
400     local lv_list i x
401    
402     # ignore files with ~ in it.
403     for i in $(ls ${1}/localversion* 2>/dev/null); do
404     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
405     done
406    
407     for i in ${lv_list}; do
408     x="${x}$(<${i})"
409     done
410     x=${x/ /}
411     echo ${x}
412     }
413    
414 robbat2 1.63 # internal variable, so we know to only print the warning once
415     get_version_warning_done=
416    
417 dsd 1.56 # @FUNCTION: get_version
418     # @DESCRIPTION:
419     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
420     # (if KV_FULL is already set it does nothing).
421     #
422     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
423     #
424     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
425     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
426     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
427 johnm 1.1 get_version() {
428 johnm 1.4 local kbuild_output
429 swegener 1.29
430 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
431     # we can force by unsetting KV_FULL
432 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
433 johnm 1.1
434     # if we dont know KV_FULL, then we need too.
435     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
436     unset KV_DIR
437    
438     # KV_DIR will contain the full path to the sources directory we should use
439 robbat2 1.63 [ -z "${get_version_warning_done}" ] && \
440 johnm 1.11 qeinfo "Determining the location of the kernel source code"
441 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
442     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
443 swegener 1.29
444 johnm 1.1 if [ -z "${KV_DIR}" ]
445     then
446 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
447     get_version_warning_done=1
448     qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
449     #qeinfo "This package requires Linux sources."
450     if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
451     qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
452     qeinfo "(or the kernel you wish to build against)."
453     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
454     else
455     qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
456     fi
457 johnm 1.7 fi
458 johnm 1.19 return 1
459 johnm 1.7 fi
460    
461 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
462     qeinfo "Found kernel source directory:"
463     qeinfo " ${KV_DIR}"
464     fi
465 johnm 1.7
466     if [ ! -s "${KV_DIR}/Makefile" ]
467     then
468 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
469     get_version_warning_done=1
470     qeerror "Could not find a Makefile in the kernel source directory."
471     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
472     fi
473 johnm 1.19 return 1
474 johnm 1.7 fi
475 swegener 1.29
476 johnm 1.4 # OK so now we know our sources directory, but they might be using
477     # KBUILD_OUTPUT, and we need this for .config and localversions-*
478     # so we better find it eh?
479     # do we pass KBUILD_OUTPUT on the CLI?
480     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
481 swegener 1.29
482 robbat2 1.78 # keep track of it
483     KERNEL_MAKEFILE="${KV_DIR}/Makefile"
484    
485     # Check if the Makefile is valid for direct parsing.
486     # Check status results:
487     # - PASS, use 'getfilevar' to extract values
488     # - FAIL, use 'getfilevar_noexec' to extract values
489     # The check may fail if:
490     # - make is not present
491     # - corruption exists in the kernel makefile
492     local a='' b='' mkfunc='getfilevar'
493     a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
494     b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
495     [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
496    
497 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
498 robbat2 1.78 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
499 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
500 swegener 1.29
501 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
502     # directory name to find version information as this seems insane.
503 robbat2 1.78 # so we parse ${KERNEL_MAKEFILE}
504     KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
505     KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
506     KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
507     KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
508 swegener 1.29
509 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
510     then
511 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
512     get_version_warning_done=1
513     qeerror "Could not detect kernel version."
514     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
515     fi
516 johnm 1.19 return 1
517 johnm 1.7 fi
518 swegener 1.29
519 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
520 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
521     # This *WILL* break if the user is using localversions, but we assume it was
522     # caught before this if they are.
523 genstef 1.49 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
524     OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
525 johnm 1.4
526     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
527     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
528     if [ -n "${KV_OUT_DIR}" ];
529     then
530 johnm 1.11 qeinfo "Found kernel object directory:"
531     qeinfo " ${KV_OUT_DIR}"
532 swegener 1.29
533 johnm 1.30 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
534 johnm 1.4 fi
535 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
536 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
537 johnm 1.21
538 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
539 robbat2 1.71 if linux_config_src_exists; then
540 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
541     KV_LOCAL="${KV_LOCAL//\"/}"
542    
543     # For things like git that can append extra stuff:
544     [ -e ${KV_DIR}/scripts/setlocalversion ] &&
545     linux_chkconfig_builtin LOCALVERSION_AUTO &&
546     KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
547 johnm 1.41 fi
548    
549 johnm 1.1 # And we should set KV_FULL to the full expanded version
550     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
551 johnm 1.21
552 johnm 1.11 qeinfo "Found sources for kernel version:"
553     qeinfo " ${KV_FULL}"
554 johnm 1.21
555 johnm 1.19 return 0
556 johnm 1.1 }
557    
558 dsd 1.56 # @FUNCTION: get_running_version
559     # @DESCRIPTION:
560     # It gets the version of the current running kernel and the result is the same as get_version() if the
561     # function can find the sources.
562 johnm 1.23 get_running_version() {
563     KV_FULL=$(uname -r)
564 johnm 1.1
565 johnm 1.23 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
566     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
567     unset KV_FULL
568     get_version
569     return $?
570     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
571     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
572     unset KV_FULL
573     get_version
574     return $?
575     else
576     KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
577     KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
578     KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
579     KV_PATCH=${KV_PATCH//-*}
580     [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
581     && KV_EXTRA="-${KV_FULL#*-}"
582     fi
583     return 0
584     }
585 johnm 1.1
586 robbat2 1.66 # This next function is named with the eclass prefix to avoid conflicts with
587     # some old versionator-like eclass functions.
588    
589     # @FUNCTION: linux-info_get_any_version
590     # @DESCRIPTION:
591     # This attempts to find the version of the sources, and otherwise falls back to
592     # the version of the running kernel.
593     linux-info_get_any_version() {
594 maekke 1.73 get_version
595 robbat2 1.67 if [[ $? -ne 0 ]]; then
596 robbat2 1.66 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
597 maekke 1.73 get_running_version
598 robbat2 1.66 fi
599     }
600    
601 johnm 1.1
602     # ebuild check functions
603     # ---------------------------------------
604    
605 dsd 1.56 # @FUNCTION: check_kernel_built
606     # @DESCRIPTION:
607     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
608 johnm 1.1 check_kernel_built() {
609 dsd 1.53 # if we haven't determined the version yet, we need to
610 dsd 1.54 require_configured_kernel
611 dsd 1.53 get_version
612 swegener 1.29
613 johnm 1.16 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
614 johnm 1.1 then
615 johnm 1.16 eerror "These sources have not yet been prepared."
616     eerror "We cannot build against an unprepared tree."
617 johnm 1.1 eerror "To resolve this, please type the following:"
618     eerror
619     eerror "# cd ${KV_DIR}"
620     eerror "# make oldconfig"
621 johnm 1.16 eerror "# make modules_prepare"
622 johnm 1.1 eerror
623     eerror "Then please try merging this module again."
624     die "Kernel sources need compiling first"
625     fi
626     }
627    
628 dsd 1.56 # @FUNCTION: check_modules_supported
629     # @DESCRIPTION:
630     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
631 johnm 1.1 check_modules_supported() {
632     # if we haven't determined the version yet, we need too.
633 dsd 1.53 require_configured_kernel
634     get_version
635 swegener 1.29
636 johnm 1.7 if ! linux_chkconfig_builtin "MODULES"
637 johnm 1.1 then
638     eerror "These sources do not support loading external modules."
639     eerror "to be able to use this module please enable \"Loadable modules support\""
640     eerror "in your kernel, recompile and then try merging this module again."
641 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
642 johnm 1.3 fi
643     }
644    
645 dsd 1.56 # @FUNCTION: check_extra_config
646     # @DESCRIPTION:
647     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
648     # the prefix ~ is not used) doesn't satisfy the directive.
649 johnm 1.3 check_extra_config() {
650 mrness 1.45 local config negate die error reworkmodulenames
651 dsd 1.53 local soft_errors_count=0 hard_errors_count=0 config_required=0
652 robbat2 1.75 # store the value of the QA check, because otherwise we won't catch usages
653     # after if check_extra_config is called AND other direct calls are done
654     # later.
655     local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
656 dsd 1.53
657 dsd 1.55 # if we haven't determined the version yet, we need to
658 robbat2 1.70 linux-info_get_any_version
659 dsd 1.55
660 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
661     # one is when all of the CONFIG_CHECK options are prefixed with "~".
662     for config in ${CONFIG_CHECK}
663     do
664     if [[ "${config:0:1}" != "~" ]]; then
665     config_required=1
666     break
667     fi
668     done
669    
670     if [[ ${config_required} == 0 ]]; then
671     # In the case where we don't require a .config, we can now bail out
672     # if the user has no .config as there is nothing to do. Otherwise
673     # code later will cause a failure due to missing .config.
674 robbat2 1.79 if ! linux_config_exists; then
675 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
676 robbat2 1.64 ewarn "to absence of any configured kernel sources or compiled"
677     ewarn "config:"
678 robbat2 1.60 for config in ${CONFIG_CHECK}; do
679 robbat2 1.77 local_error="ERROR_${config#\~}"
680     msg="${!local_error}"
681     if [[ "x${msg}" == "x" ]]; then
682     local_error="WARNING_${config#\~}"
683     msg="${!local_error}"
684     fi
685     ewarn " - ${config#\~}${msg:+ - }${msg}"
686 robbat2 1.60 done
687     ewarn "You're on your own to make sure they are set if needed."
688 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
689 dsd 1.53 return 0
690     fi
691     else
692 robbat2 1.79 require_configured_kernel
693 dsd 1.53 fi
694 johnm 1.3
695 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
696 maekke 1.58
697 johnm 1.3 for config in ${CONFIG_CHECK}
698     do
699 johnm 1.31 # if we specify any fatal, ensure we honor them
700     die=1
701     error=0
702     negate=0
703     reworkmodulenames=0
704    
705 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
706 mrness 1.45 die=0
707 johnm 1.31 config=${config:1}
708 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
709 mrness 1.45 die=0
710 johnm 1.31 reworkmodulenames=1
711     config=${config:1}
712     fi
713 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
714 mrness 1.45 negate=1
715 johnm 1.44 config=${config:1}
716     fi
717 johnm 1.17
718 johnm 1.31 if [[ ${negate} == 1 ]]; then
719     linux_chkconfig_present ${config} && error=2
720     elif [[ ${reworkmodulenames} == 1 ]]; then
721 mrness 1.45 local temp_config="${config//*:}" i n
722 johnm 1.17 config="${config//:*}"
723 johnm 1.31 if linux_chkconfig_present ${config}; then
724     for i in ${MODULE_NAMES}; do
725 johnm 1.17 n="${i//${temp_config}}"
726 dsd 1.38 [[ -z ${n//\(*} ]] && \
727 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
728 johnm 1.17 done
729 johnm 1.31 error=2
730 johnm 1.17 fi
731 johnm 1.3 else
732 johnm 1.31 linux_chkconfig_present ${config} || error=1
733     fi
734    
735 mrness 1.45 if [[ ${error} > 0 ]]; then
736     local report_func="eerror" local_error
737     local_error="ERROR_${config}"
738     local_error="${!local_error}"
739    
740     if [[ -z "${local_error}" ]]; then
741     # using old, deprecated format.
742     local_error="${config}_ERROR"
743     local_error="${!local_error}"
744     fi
745     if [[ ${die} == 0 && -z "${local_error}" ]]; then
746     #soft errors can be warnings
747     local_error="WARNING_${config}"
748 johnm 1.7 local_error="${!local_error}"
749 mrness 1.45 if [[ -n "${local_error}" ]] ; then
750     report_func="ewarn"
751 johnm 1.44 fi
752 mrness 1.45 fi
753 johnm 1.44
754 mrness 1.45 if [[ -z "${local_error}" ]]; then
755     [[ ${error} == 1 ]] \
756     && local_error="is not set when it should be." \
757     || local_error="should not be set. But it is."
758     local_error="CONFIG_${config}:\t ${local_error}"
759     fi
760     if [[ ${die} == 0 ]]; then
761     ${report_func} " ${local_error}"
762     soft_errors_count=$[soft_errors_count + 1]
763     else
764     ${report_func} " ${local_error}"
765     hard_errors_count=$[hard_errors_count + 1]
766 johnm 1.3 fi
767     fi
768     done
769    
770 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
771 johnm 1.3 eerror "Please check to make sure these options are set correctly."
772 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
773 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
774     eerror "this package again."
775 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
776 mrness 1.45 die "Incorrect kernel configuration options"
777     elif [[ ${soft_errors_count} > 0 ]]; then
778     ewarn "Please check to make sure these options are set correctly."
779     ewarn "Failure to do so may cause unexpected problems."
780     else
781     eend 0
782 johnm 1.1 fi
783 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
784 johnm 1.1 }
785    
786     check_zlibinflate() {
787 dsd 1.53 # if we haven't determined the version yet, we need to
788     require_configured_kernel
789     get_version
790 swegener 1.29
791 johnm 1.1 # although I restructured this code - I really really really dont support it!
792    
793     # bug #27882 - zlib routines are only linked into the kernel
794     # if something compiled into the kernel calls them
795     #
796     # plus, for the cloop module, it appears that there's no way
797     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
798     # is on
799 swegener 1.29
800     local INFLATE
801     local DEFLATE
802 johnm 1.1
803     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
804 swegener 1.29
805 johnm 1.1 ebegin "checking ZLIB_INFLATE"
806 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
807 johnm 1.1 eend $?
808     [ "$?" != 0 ] && die
809 swegener 1.29
810 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
811 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
812 johnm 1.1 eend $?
813     [ "$?" != 0 ] && die
814 swegener 1.29
815 johnm 1.1 local LINENO_START
816     local LINENO_END
817     local SYMBOLS
818     local x
819 swegener 1.29
820 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
821     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
822     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
823     (( LINENO_END = $LINENO_END - 1 ))
824 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
825 johnm 1.1
826     # okay, now we have a list of symbols
827     # we need to check each one in turn, to see whether it is set or not
828     for x in $SYMBOLS ; do
829     if [ "${!x}" = "y" ]; then
830     # we have a winner!
831     einfo "${x} ensures zlib is linked into your kernel - excellent"
832     return 0
833     fi
834     done
835 swegener 1.29
836 johnm 1.1 eerror
837     eerror "This kernel module requires ZLIB library support."
838     eerror "You have enabled zlib support in your kernel, but haven't enabled"
839     eerror "enabled any option that will ensure that zlib is linked into your"
840     eerror "kernel."
841     eerror
842     eerror "Please ensure that you enable at least one of these options:"
843     eerror
844    
845     for x in $SYMBOLS ; do
846     eerror " * $x"
847     done
848    
849     eerror
850     eerror "Please remember to recompile and install your kernel, and reboot"
851     eerror "into your new kernel before attempting to load this kernel module."
852    
853     die "Kernel doesn't include zlib support"
854     }
855 johnm 1.8
856     ################################
857     # Default pkg_setup
858     # Also used when inheriting linux-mod to force a get_version call
859 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
860     # @DESCRIPTION:
861     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
862     # to support the options specified in CONFIG_CHECK (if not null)
863 johnm 1.8 linux-info_pkg_setup() {
864 robbat2 1.66 linux-info_get_any_version
865 phreak 1.48
866     if kernel_is 2 4; then
867     if [ "$( gcc-major-version )" -eq "4" ] ; then
868     echo
869     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
870     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
871     echo
872     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
873     ewarn "newer kernel that supports gcc-4."
874     echo
875     ewarn "Also be aware that bugreports about gcc-4 not working"
876     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
877     echo
878     epause 10
879     fi
880     fi
881    
882 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
883 johnm 1.8 }

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