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Revision 1.64 - (hide annotations) (download)
Sun Sep 6 23:12:29 2009 UTC (5 years ago) by robbat2
Branch: MAIN
Changes since 1.63: +5 -4 lines
Bug 283320: Fix minor typo for config.gz. Improve ewarn output, more migration.

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 1.64 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.63 2009/09/06 23:04:37 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 robbat2 1.62 # @ECLASS-VARIABLE: I_KNOW_WHAT_I_AM_DOING
105     # @DESCRIPTION:
106     # Temporary variable for the migration to making linux-info non-fatal.
107    
108 johnm 1.21 # And to ensure all the weirdness with crosscompile
109 johnm 1.23 inherit toolchain-funcs versionator
110 johnm 1.1
111 johnm 1.8 EXPORT_FUNCTIONS pkg_setup
112 johnm 1.1
113 exg 1.40 DEPEND="kernel_linux? ( virtual/linux-sources )"
114 brix 1.39 RDEPEND=""
115    
116 johnm 1.1 # Overwritable environment Var's
117     # ---------------------------------------
118 johnm 1.21 KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
119 johnm 1.1
120 johnm 1.7
121 johnm 1.16 # Bug fixes
122     # fix to bug #75034
123     case ${ARCH} in
124 swegener 1.29 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
125     ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
126 johnm 1.16 esac
127    
128 vapier 1.51 # @FUNCTION: set_arch_to_kernel
129     # @DESCRIPTION:
130     # Set the env ARCH to match what the kernel expects.
131     set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
132     # @FUNCTION: set_arch_to_portage
133     # @DESCRIPTION:
134     # Set the env ARCH to match what portage expects.
135     set_arch_to_portage() { export ARCH=$(tc-arch); }
136 johnm 1.11
137     # qeinfo "Message"
138     # -------------------
139 johnm 1.21 # qeinfo is a quiet einfo call when EBUILD_PHASE
140 johnm 1.11 # should not have visible output.
141 johnm 1.21 qout() {
142     local outputmsg type
143     type=${1}
144     shift
145     outputmsg="${@}"
146 wolf31o2 1.26 case "${EBUILD_PHASE}" in
147     depend) unset outputmsg;;
148     clean) unset outputmsg;;
149     preinst) unset outputmsg;;
150     esac
151     [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
152 johnm 1.11 }
153    
154 johnm 1.21 qeinfo() { qout einfo "${@}" ; }
155     qeerror() { qout eerror "${@}" ; }
156 johnm 1.11
157 johnm 1.1 # File Functions
158     # ---------------------------------------
159    
160 dsd 1.56 # @FUNCTION: getfilevar
161     # @USAGE: variable configfile
162     # @RETURN: the value of the variable
163     # @DESCRIPTION:
164 robbat2 1.61 # It detects the value of the variable defined in the file configfile. This is
165     # done by including the configfile, and printing the variable with Make.
166     # It WILL break if your makefile has missing dependencies!
167 johnm 1.1 getfilevar() {
168 dsd 1.57 local ERROR basefname basedname myARCH="${ARCH}"
169 johnm 1.1 ERROR=0
170 johnm 1.16
171 johnm 1.1 [ -z "${1}" ] && ERROR=1
172     [ ! -f "${2}" ] && ERROR=1
173    
174     if [ "${ERROR}" = 1 ]
175     then
176 johnm 1.6 echo -e "\n"
177 johnm 1.1 eerror "getfilevar requires 2 variables, with the second a valid file."
178     eerror " getfilevar <VARIABLE> <CONFIGFILE>"
179     else
180 johnm 1.34 basefname="$(basename ${2})"
181     basedname="$(dirname ${2})"
182 johnm 1.6 unset ARCH
183 johnm 1.21
184 johnm 1.42 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
185 dsd 1.57 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
186 johnm 1.21
187     ARCH=${myARCH}
188 johnm 1.1 fi
189     }
190    
191 robbat2 1.61 # @FUNCTION: getfilevar_noexec
192     # @USAGE: variable configfile
193     # @RETURN: the value of the variable
194     # @DESCRIPTION:
195     # It detects the value of the variable defined in the file configfile.
196     # This is done with sed matching an expression only. If the variable is defined,
197     # you will run into problems. See getfilevar for those cases.
198     getfilevar_noexec() {
199 robbat2 1.62 local ERROR basefname basedname mycat myARCH="${ARCH}"
200 robbat2 1.61 ERROR=0
201 robbat2 1.62 mycat='cat'
202 robbat2 1.61
203     [ -z "${1}" ] && ERROR=1
204     [ ! -f "${2}" ] && ERROR=1
205 robbat2 1.64 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
206 robbat2 1.61
207     if [ "${ERROR}" = 1 ]
208     then
209     echo -e "\n"
210     eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
211     eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
212     else
213 robbat2 1.62 ${mycat} "${2}" | \
214 robbat2 1.61 sed -n \
215     -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
216     s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
217     s,[[:space:]]*\$,,g ;
218     p
219 robbat2 1.62 }"
220 robbat2 1.61 fi
221     }
222    
223 dsd 1.53
224 robbat2 1.62 # @FUNCTION: linux_config_src_exists
225     # @RETURN: true or false
226     # @DESCRIPTION:
227     # It returns true if .config exists in a build directory otherwise false
228     linux_config_src_exists() {
229     [ -s "${KV_OUT_DIR}/.config" ]
230     }
231    
232     # @FUNCTION: linux_config_bin_exists
233     # @RETURN: true or false
234     # @DESCRIPTION:
235     # It returns true if .config exists in /proc, otherwise false
236     linux_config_bin_exists() {
237     [ -s "/proc/config.gz" ]
238     }
239    
240 dsd 1.56 # @FUNCTION: linux_config_exists
241     # @RETURN: true or false
242     # @DESCRIPTION:
243     # It returns true if .config exists otherwise false
244 robbat2 1.62 #
245     # This function MUST be checked before using any of the linux_chkconfig_*
246     # functions.
247 dsd 1.53 linux_config_exists() {
248 robbat2 1.62 linux_config_src_exists || linux_config_bin_exists
249 dsd 1.53 }
250    
251 dsd 1.56 # @FUNCTION: require_configured_kernel
252     # @DESCRIPTION:
253     # This function verifies that the current kernel is configured (it checks against the existence of .config)
254     # otherwise it dies.
255 dsd 1.53 require_configured_kernel() {
256 robbat2 1.62 if ! linux_config_src_exists; then
257 dsd 1.53 qeerror "Could not find a usable .config in the kernel source directory."
258     qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
259     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
260     qeerror "it points to the necessary object directory so that it might find .config."
261     die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
262     fi
263     }
264    
265 dsd 1.56 # @FUNCTION: linux_chkconfig_present
266     # @USAGE: option
267     # @RETURN: true or false
268     # @DESCRIPTION:
269 loki_val 1.59 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
270 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
271     # MUST call linux_config_exists first.
272 johnm 1.7 linux_chkconfig_present() {
273 johnm 1.1 local RESULT
274 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
275     local config
276     config="${KV_OUT_DIR}/.config"
277     [ ! -f "${config}" ] && config="/proc/config.gz"
278     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
279 johnm 1.1 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
280     }
281    
282 dsd 1.56 # @FUNCTION: linux_chkconfig_module
283     # @USAGE: option
284     # @RETURN: true or false
285     # @DESCRIPTION:
286     # It checks that CONFIG_<option>=m is present in the current kernel .config
287 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
288     # MUST call linux_config_exists first.
289 johnm 1.7 linux_chkconfig_module() {
290 johnm 1.1 local RESULT
291 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
292     local config
293     config="${KV_OUT_DIR}/.config"
294     [ ! -f "${config}" ] && config="/proc/config.gz"
295     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
296 johnm 1.1 [ "${RESULT}" = "m" ] && return 0 || return 1
297     }
298    
299 dsd 1.56 # @FUNCTION: linux_chkconfig_builtin
300     # @USAGE: option
301     # @RETURN: true or false
302     # @DESCRIPTION:
303     # It checks that CONFIG_<option>=y is present in the current kernel .config
304 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
305     # MUST call linux_config_exists first.
306 johnm 1.7 linux_chkconfig_builtin() {
307 johnm 1.1 local RESULT
308 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
309     local config
310     config="${KV_OUT_DIR}/.config"
311     [ ! -f "${config}" ] && config="/proc/config.gz"
312     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
313 johnm 1.1 [ "${RESULT}" = "y" ] && return 0 || return 1
314     }
315    
316 dsd 1.56 # @FUNCTION: linux_chkconfig_string
317     # @USAGE: option
318     # @RETURN: CONFIG_<option>
319     # @DESCRIPTION:
320     # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
321 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
322     # MUST call linux_config_exists first.
323 johnm 1.7 linux_chkconfig_string() {
324 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
325     local config
326     config="${KV_OUT_DIR}/.config"
327     [ ! -f "${config}" ] && config="/proc/config.gz"
328     getfilevar_noexec "CONFIG_${1}" "${config}"
329 johnm 1.7 }
330    
331 johnm 1.1 # Versioning Functions
332     # ---------------------------------------
333    
334 dsd 1.56 # @FUNCTION: kernel_is
335     # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
336     # @RETURN: true or false
337     # @DESCRIPTION:
338     # It returns true when the current kernel version satisfies the comparison against the passed version.
339     # -eq is the default comparison.
340 johnm 1.1 #
341 dsd 1.56 # @CODE
342 johnm 1.1 # For Example where KV = 2.6.9
343 dsd 1.56 # kernel_is 2 4 returns false
344     # kernel_is 2 returns true
345     # kernel_is 2 6 returns true
346     # kernel_is 2 6 8 returns false
347     # kernel_is 2 6 9 returns true
348     # @CODE
349    
350 johnm 1.1 # got the jist yet?
351    
352     kernel_is() {
353 dsd 1.53 # if we haven't determined the version yet, we need to.
354     get_version
355 johnm 1.23 local operator test value x=0 y=0 z=0
356    
357     case ${1} in
358     lt) operator="-lt"; shift;;
359     gt) operator="-gt"; shift;;
360     le) operator="-le"; shift;;
361     ge) operator="-ge"; shift;;
362     eq) operator="-eq"; shift;;
363     *) operator="-eq";;
364     esac
365    
366     for x in ${@}; do
367     for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
368     value="${value}${x}"
369     z=$((${z} + 1))
370    
371     case ${z} in
372     1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
373     test="${test}${KV_MAJOR}";;
374     2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
375     test="${test}${KV_MINOR}";;
376     3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
377     test="${test}${KV_PATCH}";;
378     *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
379     esac
380     done
381 robbat2 1.61
382 swegener 1.29 [ ${test} ${operator} ${value} ] && return 0 || return 1
383 johnm 1.1 }
384    
385 johnm 1.30 get_localversion() {
386     local lv_list i x
387    
388     # ignore files with ~ in it.
389     for i in $(ls ${1}/localversion* 2>/dev/null); do
390     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
391     done
392    
393     for i in ${lv_list}; do
394     x="${x}$(<${i})"
395     done
396     x=${x/ /}
397     echo ${x}
398     }
399    
400 robbat2 1.63 # internal variable, so we know to only print the warning once
401     get_version_warning_done=
402    
403 dsd 1.56 # @FUNCTION: get_version
404     # @DESCRIPTION:
405     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
406     # (if KV_FULL is already set it does nothing).
407     #
408     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
409     #
410     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
411     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
412     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
413 johnm 1.1 get_version() {
414 johnm 1.4 local kbuild_output
415 swegener 1.29
416 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
417     # we can force by unsetting KV_FULL
418 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
419 johnm 1.1
420     # if we dont know KV_FULL, then we need too.
421     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
422     unset KV_DIR
423    
424     # KV_DIR will contain the full path to the sources directory we should use
425 robbat2 1.63 [ -z "${get_version_warning_done}" ] && \
426 johnm 1.11 qeinfo "Determining the location of the kernel source code"
427 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
428     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
429 swegener 1.29
430 johnm 1.1 if [ -z "${KV_DIR}" ]
431     then
432 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
433     get_version_warning_done=1
434     qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
435     #qeinfo "This package requires Linux sources."
436     if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
437     qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
438     qeinfo "(or the kernel you wish to build against)."
439     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
440     else
441     qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
442     fi
443 johnm 1.7 fi
444 johnm 1.19 return 1
445 johnm 1.7 fi
446    
447 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
448     qeinfo "Found kernel source directory:"
449     qeinfo " ${KV_DIR}"
450     fi
451 johnm 1.7
452     if [ ! -s "${KV_DIR}/Makefile" ]
453     then
454 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
455     get_version_warning_done=1
456     qeerror "Could not find a Makefile in the kernel source directory."
457     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
458     fi
459 johnm 1.19 return 1
460 johnm 1.7 fi
461 swegener 1.29
462 johnm 1.4 # OK so now we know our sources directory, but they might be using
463     # KBUILD_OUTPUT, and we need this for .config and localversions-*
464     # so we better find it eh?
465     # do we pass KBUILD_OUTPUT on the CLI?
466     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
467 swegener 1.29
468 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
469 robbat2 1.61 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
470 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
471 swegener 1.29
472 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
473     # directory name to find version information as this seems insane.
474     # so we parse ${KV_DIR}/Makefile
475 robbat2 1.61 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
476     KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
477     KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
478     KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
479 swegener 1.29
480 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
481     then
482 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
483     get_version_warning_done=1
484     qeerror "Could not detect kernel version."
485     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
486     fi
487 johnm 1.19 return 1
488 johnm 1.7 fi
489 swegener 1.29
490 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
491 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
492     # This *WILL* break if the user is using localversions, but we assume it was
493     # caught before this if they are.
494 genstef 1.49 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
495     OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
496 johnm 1.4
497     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
498     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
499     if [ -n "${KV_OUT_DIR}" ];
500     then
501 johnm 1.11 qeinfo "Found kernel object directory:"
502     qeinfo " ${KV_OUT_DIR}"
503 swegener 1.29
504 johnm 1.30 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
505 johnm 1.4 fi
506 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
507 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
508 johnm 1.21
509 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
510     if linux_config_exists; then
511     KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
512     KV_LOCAL="${KV_LOCAL//\"/}"
513    
514     # For things like git that can append extra stuff:
515     [ -e ${KV_DIR}/scripts/setlocalversion ] &&
516     linux_chkconfig_builtin LOCALVERSION_AUTO &&
517     KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
518 johnm 1.41 fi
519    
520 johnm 1.1 # And we should set KV_FULL to the full expanded version
521     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
522 johnm 1.21
523 johnm 1.11 qeinfo "Found sources for kernel version:"
524     qeinfo " ${KV_FULL}"
525 johnm 1.21
526 johnm 1.19 return 0
527 johnm 1.1 }
528    
529 dsd 1.56 # @FUNCTION: get_running_version
530     # @DESCRIPTION:
531     # It gets the version of the current running kernel and the result is the same as get_version() if the
532     # function can find the sources.
533 johnm 1.23 get_running_version() {
534     KV_FULL=$(uname -r)
535 johnm 1.1
536 johnm 1.23 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
537     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
538     unset KV_FULL
539     get_version
540     return $?
541     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
542     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
543     unset KV_FULL
544     get_version
545     return $?
546     else
547     KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
548     KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
549     KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
550     KV_PATCH=${KV_PATCH//-*}
551     [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
552     && KV_EXTRA="-${KV_FULL#*-}"
553     fi
554     return 0
555     }
556 johnm 1.1
557    
558     # ebuild check functions
559     # ---------------------------------------
560    
561 dsd 1.56 # @FUNCTION: check_kernel_built
562     # @DESCRIPTION:
563     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
564 johnm 1.1 check_kernel_built() {
565 dsd 1.53 # if we haven't determined the version yet, we need to
566 dsd 1.54 require_configured_kernel
567 dsd 1.53 get_version
568 swegener 1.29
569 johnm 1.16 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
570 johnm 1.1 then
571 johnm 1.16 eerror "These sources have not yet been prepared."
572     eerror "We cannot build against an unprepared tree."
573 johnm 1.1 eerror "To resolve this, please type the following:"
574     eerror
575     eerror "# cd ${KV_DIR}"
576     eerror "# make oldconfig"
577 johnm 1.16 eerror "# make modules_prepare"
578 johnm 1.1 eerror
579     eerror "Then please try merging this module again."
580     die "Kernel sources need compiling first"
581     fi
582     }
583    
584 dsd 1.56 # @FUNCTION: check_modules_supported
585     # @DESCRIPTION:
586     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
587 johnm 1.1 check_modules_supported() {
588     # if we haven't determined the version yet, we need too.
589 dsd 1.53 require_configured_kernel
590     get_version
591 swegener 1.29
592 johnm 1.7 if ! linux_chkconfig_builtin "MODULES"
593 johnm 1.1 then
594     eerror "These sources do not support loading external modules."
595     eerror "to be able to use this module please enable \"Loadable modules support\""
596     eerror "in your kernel, recompile and then try merging this module again."
597 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
598 johnm 1.3 fi
599     }
600    
601 dsd 1.56 # @FUNCTION: check_extra_config
602     # @DESCRIPTION:
603     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
604     # the prefix ~ is not used) doesn't satisfy the directive.
605 johnm 1.3 check_extra_config() {
606 mrness 1.45 local config negate die error reworkmodulenames
607 dsd 1.53 local soft_errors_count=0 hard_errors_count=0 config_required=0
608    
609 dsd 1.55 # if we haven't determined the version yet, we need to
610     get_version
611    
612 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
613     # one is when all of the CONFIG_CHECK options are prefixed with "~".
614     for config in ${CONFIG_CHECK}
615     do
616     if [[ "${config:0:1}" != "~" ]]; then
617     config_required=1
618     break
619     fi
620     done
621    
622     if [[ ${config_required} == 0 ]]; then
623     # In the case where we don't require a .config, we can now bail out
624     # if the user has no .config as there is nothing to do. Otherwise
625     # code later will cause a failure due to missing .config.
626     if ! linux_config_exists; then
627 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
628 robbat2 1.64 ewarn "to absence of any configured kernel sources or compiled"
629     ewarn "config:"
630 robbat2 1.60 for config in ${CONFIG_CHECK}; do
631     ewarn " - ${config#\~}"
632     done
633     ewarn "You're on your own to make sure they are set if needed."
634 dsd 1.53 return 0
635     fi
636     else
637 robbat2 1.64 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
638 dsd 1.53 fi
639 johnm 1.3
640 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
641 maekke 1.58
642 johnm 1.3 for config in ${CONFIG_CHECK}
643     do
644 johnm 1.31 # if we specify any fatal, ensure we honor them
645     die=1
646     error=0
647     negate=0
648     reworkmodulenames=0
649    
650 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
651 mrness 1.45 die=0
652 johnm 1.31 config=${config:1}
653 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
654 mrness 1.45 die=0
655 johnm 1.31 reworkmodulenames=1
656     config=${config:1}
657     fi
658 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
659 mrness 1.45 negate=1
660 johnm 1.44 config=${config:1}
661     fi
662 johnm 1.17
663 johnm 1.31 if [[ ${negate} == 1 ]]; then
664     linux_chkconfig_present ${config} && error=2
665     elif [[ ${reworkmodulenames} == 1 ]]; then
666 mrness 1.45 local temp_config="${config//*:}" i n
667 johnm 1.17 config="${config//:*}"
668 johnm 1.31 if linux_chkconfig_present ${config}; then
669     for i in ${MODULE_NAMES}; do
670 johnm 1.17 n="${i//${temp_config}}"
671 dsd 1.38 [[ -z ${n//\(*} ]] && \
672 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
673 johnm 1.17 done
674 johnm 1.31 error=2
675 johnm 1.17 fi
676 johnm 1.3 else
677 johnm 1.31 linux_chkconfig_present ${config} || error=1
678     fi
679    
680 mrness 1.45 if [[ ${error} > 0 ]]; then
681     local report_func="eerror" local_error
682     local_error="ERROR_${config}"
683     local_error="${!local_error}"
684    
685     if [[ -z "${local_error}" ]]; then
686     # using old, deprecated format.
687     local_error="${config}_ERROR"
688     local_error="${!local_error}"
689     fi
690     if [[ ${die} == 0 && -z "${local_error}" ]]; then
691     #soft errors can be warnings
692     local_error="WARNING_${config}"
693 johnm 1.7 local_error="${!local_error}"
694 mrness 1.45 if [[ -n "${local_error}" ]] ; then
695     report_func="ewarn"
696 johnm 1.44 fi
697 mrness 1.45 fi
698 johnm 1.44
699 mrness 1.45 if [[ -z "${local_error}" ]]; then
700     [[ ${error} == 1 ]] \
701     && local_error="is not set when it should be." \
702     || local_error="should not be set. But it is."
703     local_error="CONFIG_${config}:\t ${local_error}"
704     fi
705     if [[ ${die} == 0 ]]; then
706     ${report_func} " ${local_error}"
707     soft_errors_count=$[soft_errors_count + 1]
708     else
709     ${report_func} " ${local_error}"
710     hard_errors_count=$[hard_errors_count + 1]
711 johnm 1.3 fi
712     fi
713     done
714    
715 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
716 johnm 1.3 eerror "Please check to make sure these options are set correctly."
717 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
718 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
719     eerror "this package again."
720     die "Incorrect kernel configuration options"
721     elif [[ ${soft_errors_count} > 0 ]]; then
722     ewarn "Please check to make sure these options are set correctly."
723     ewarn "Failure to do so may cause unexpected problems."
724     else
725     eend 0
726 johnm 1.1 fi
727     }
728    
729     check_zlibinflate() {
730 dsd 1.53 # if we haven't determined the version yet, we need to
731     require_configured_kernel
732     get_version
733 swegener 1.29
734 johnm 1.1 # although I restructured this code - I really really really dont support it!
735    
736     # bug #27882 - zlib routines are only linked into the kernel
737     # if something compiled into the kernel calls them
738     #
739     # plus, for the cloop module, it appears that there's no way
740     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
741     # is on
742 swegener 1.29
743     local INFLATE
744     local DEFLATE
745 johnm 1.1
746     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
747 swegener 1.29
748 johnm 1.1 ebegin "checking ZLIB_INFLATE"
749 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
750 johnm 1.1 eend $?
751     [ "$?" != 0 ] && die
752 swegener 1.29
753 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
754 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
755 johnm 1.1 eend $?
756     [ "$?" != 0 ] && die
757 swegener 1.29
758 johnm 1.1 local LINENO_START
759     local LINENO_END
760     local SYMBOLS
761     local x
762 swegener 1.29
763 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
764     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
765     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
766     (( LINENO_END = $LINENO_END - 1 ))
767 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
768 johnm 1.1
769     # okay, now we have a list of symbols
770     # we need to check each one in turn, to see whether it is set or not
771     for x in $SYMBOLS ; do
772     if [ "${!x}" = "y" ]; then
773     # we have a winner!
774     einfo "${x} ensures zlib is linked into your kernel - excellent"
775     return 0
776     fi
777     done
778 swegener 1.29
779 johnm 1.1 eerror
780     eerror "This kernel module requires ZLIB library support."
781     eerror "You have enabled zlib support in your kernel, but haven't enabled"
782     eerror "enabled any option that will ensure that zlib is linked into your"
783     eerror "kernel."
784     eerror
785     eerror "Please ensure that you enable at least one of these options:"
786     eerror
787    
788     for x in $SYMBOLS ; do
789     eerror " * $x"
790     done
791    
792     eerror
793     eerror "Please remember to recompile and install your kernel, and reboot"
794     eerror "into your new kernel before attempting to load this kernel module."
795    
796     die "Kernel doesn't include zlib support"
797     }
798 johnm 1.8
799     ################################
800     # Default pkg_setup
801     # Also used when inheriting linux-mod to force a get_version call
802 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
803     # @DESCRIPTION:
804     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
805     # to support the options specified in CONFIG_CHECK (if not null)
806 johnm 1.8 linux-info_pkg_setup() {
807 robbat2 1.62 get_version
808     if [[ $rc -ne 0 ]]; then
809     ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
810     get_running_version
811     fi
812 phreak 1.48
813     if kernel_is 2 4; then
814     if [ "$( gcc-major-version )" -eq "4" ] ; then
815     echo
816     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
817     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
818     echo
819     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
820     ewarn "newer kernel that supports gcc-4."
821     echo
822     ewarn "Also be aware that bugreports about gcc-4 not working"
823     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
824     echo
825     epause 10
826     fi
827     fi
828    
829 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
830 johnm 1.8 }

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