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Revision 1.68 - (hide annotations) (download)
Sun Sep 6 23:36:04 2009 UTC (4 years, 10 months ago) by robbat2
Branch: MAIN
Changes since 1.67: +7 -7 lines
Match the function prototype that allows "-OP" form, which matches the bash versions.

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 1.68 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.67 2009/09/06 23:31:47 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 robbat2 1.65 DEPEND=""
114     RDEPEND=""
115    
116     [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && \
117 exg 1.40 DEPEND="kernel_linux? ( virtual/linux-sources )"
118 brix 1.39
119 johnm 1.1 # Overwritable environment Var's
120     # ---------------------------------------
121 johnm 1.21 KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
122 johnm 1.1
123 johnm 1.7
124 johnm 1.16 # Bug fixes
125     # fix to bug #75034
126     case ${ARCH} in
127 swegener 1.29 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
128     ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
129 johnm 1.16 esac
130    
131 vapier 1.51 # @FUNCTION: set_arch_to_kernel
132     # @DESCRIPTION:
133     # Set the env ARCH to match what the kernel expects.
134     set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
135     # @FUNCTION: set_arch_to_portage
136     # @DESCRIPTION:
137     # Set the env ARCH to match what portage expects.
138     set_arch_to_portage() { export ARCH=$(tc-arch); }
139 johnm 1.11
140     # qeinfo "Message"
141     # -------------------
142 johnm 1.21 # qeinfo is a quiet einfo call when EBUILD_PHASE
143 johnm 1.11 # should not have visible output.
144 johnm 1.21 qout() {
145     local outputmsg type
146     type=${1}
147     shift
148     outputmsg="${@}"
149 wolf31o2 1.26 case "${EBUILD_PHASE}" in
150     depend) unset outputmsg;;
151     clean) unset outputmsg;;
152     preinst) unset outputmsg;;
153     esac
154     [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
155 johnm 1.11 }
156    
157 johnm 1.21 qeinfo() { qout einfo "${@}" ; }
158     qeerror() { qout eerror "${@}" ; }
159 johnm 1.11
160 johnm 1.1 # File Functions
161     # ---------------------------------------
162    
163 dsd 1.56 # @FUNCTION: getfilevar
164     # @USAGE: variable configfile
165     # @RETURN: the value of the variable
166     # @DESCRIPTION:
167 robbat2 1.61 # It detects the value of the variable defined in the file configfile. This is
168     # done by including the configfile, and printing the variable with Make.
169     # It WILL break if your makefile has missing dependencies!
170 johnm 1.1 getfilevar() {
171 dsd 1.57 local ERROR basefname basedname myARCH="${ARCH}"
172 johnm 1.1 ERROR=0
173 johnm 1.16
174 johnm 1.1 [ -z "${1}" ] && ERROR=1
175     [ ! -f "${2}" ] && ERROR=1
176    
177     if [ "${ERROR}" = 1 ]
178     then
179 johnm 1.6 echo -e "\n"
180 johnm 1.1 eerror "getfilevar requires 2 variables, with the second a valid file."
181     eerror " getfilevar <VARIABLE> <CONFIGFILE>"
182     else
183 johnm 1.34 basefname="$(basename ${2})"
184     basedname="$(dirname ${2})"
185 johnm 1.6 unset ARCH
186 johnm 1.21
187 johnm 1.42 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
188 dsd 1.57 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
189 johnm 1.21
190     ARCH=${myARCH}
191 johnm 1.1 fi
192     }
193    
194 robbat2 1.61 # @FUNCTION: getfilevar_noexec
195     # @USAGE: variable configfile
196     # @RETURN: the value of the variable
197     # @DESCRIPTION:
198     # It detects the value of the variable defined in the file configfile.
199     # This is done with sed matching an expression only. If the variable is defined,
200     # you will run into problems. See getfilevar for those cases.
201     getfilevar_noexec() {
202 robbat2 1.62 local ERROR basefname basedname mycat myARCH="${ARCH}"
203 robbat2 1.61 ERROR=0
204 robbat2 1.62 mycat='cat'
205 robbat2 1.61
206     [ -z "${1}" ] && ERROR=1
207     [ ! -f "${2}" ] && ERROR=1
208 robbat2 1.64 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
209 robbat2 1.61
210     if [ "${ERROR}" = 1 ]
211     then
212     echo -e "\n"
213     eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
214     eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
215     else
216 robbat2 1.62 ${mycat} "${2}" | \
217 robbat2 1.61 sed -n \
218     -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
219     s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
220     s,[[:space:]]*\$,,g ;
221     p
222 robbat2 1.62 }"
223 robbat2 1.61 fi
224     }
225    
226 dsd 1.53
227 robbat2 1.62 # @FUNCTION: linux_config_src_exists
228     # @RETURN: true or false
229     # @DESCRIPTION:
230     # It returns true if .config exists in a build directory otherwise false
231     linux_config_src_exists() {
232     [ -s "${KV_OUT_DIR}/.config" ]
233     }
234    
235     # @FUNCTION: linux_config_bin_exists
236     # @RETURN: true or false
237     # @DESCRIPTION:
238     # It returns true if .config exists in /proc, otherwise false
239     linux_config_bin_exists() {
240     [ -s "/proc/config.gz" ]
241     }
242    
243 dsd 1.56 # @FUNCTION: linux_config_exists
244     # @RETURN: true or false
245     # @DESCRIPTION:
246     # It returns true if .config exists otherwise false
247 robbat2 1.62 #
248     # This function MUST be checked before using any of the linux_chkconfig_*
249     # functions.
250 dsd 1.53 linux_config_exists() {
251 robbat2 1.62 linux_config_src_exists || linux_config_bin_exists
252 dsd 1.53 }
253    
254 dsd 1.56 # @FUNCTION: require_configured_kernel
255     # @DESCRIPTION:
256     # This function verifies that the current kernel is configured (it checks against the existence of .config)
257     # otherwise it dies.
258 dsd 1.53 require_configured_kernel() {
259 robbat2 1.62 if ! linux_config_src_exists; then
260 dsd 1.53 qeerror "Could not find a usable .config in the kernel source directory."
261     qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
262     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
263     qeerror "it points to the necessary object directory so that it might find .config."
264     die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
265     fi
266     }
267    
268 dsd 1.56 # @FUNCTION: linux_chkconfig_present
269     # @USAGE: option
270     # @RETURN: true or false
271     # @DESCRIPTION:
272 loki_val 1.59 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
273 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
274     # MUST call linux_config_exists first.
275 johnm 1.7 linux_chkconfig_present() {
276 johnm 1.1 local RESULT
277 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
278     local config
279     config="${KV_OUT_DIR}/.config"
280     [ ! -f "${config}" ] && config="/proc/config.gz"
281     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
282 johnm 1.1 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
283     }
284    
285 dsd 1.56 # @FUNCTION: linux_chkconfig_module
286     # @USAGE: option
287     # @RETURN: true or false
288     # @DESCRIPTION:
289     # It checks that CONFIG_<option>=m is present in the current kernel .config
290 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
291     # MUST call linux_config_exists first.
292 johnm 1.7 linux_chkconfig_module() {
293 johnm 1.1 local RESULT
294 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
295     local config
296     config="${KV_OUT_DIR}/.config"
297     [ ! -f "${config}" ] && config="/proc/config.gz"
298     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
299 johnm 1.1 [ "${RESULT}" = "m" ] && return 0 || return 1
300     }
301    
302 dsd 1.56 # @FUNCTION: linux_chkconfig_builtin
303     # @USAGE: option
304     # @RETURN: true or false
305     # @DESCRIPTION:
306     # It checks that CONFIG_<option>=y is present in the current kernel .config
307 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
308     # MUST call linux_config_exists first.
309 johnm 1.7 linux_chkconfig_builtin() {
310 johnm 1.1 local RESULT
311 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
312     local config
313     config="${KV_OUT_DIR}/.config"
314     [ ! -f "${config}" ] && config="/proc/config.gz"
315     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
316 johnm 1.1 [ "${RESULT}" = "y" ] && return 0 || return 1
317     }
318    
319 dsd 1.56 # @FUNCTION: linux_chkconfig_string
320     # @USAGE: option
321     # @RETURN: CONFIG_<option>
322     # @DESCRIPTION:
323     # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
324 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
325     # MUST call linux_config_exists first.
326 johnm 1.7 linux_chkconfig_string() {
327 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
328     local config
329     config="${KV_OUT_DIR}/.config"
330     [ ! -f "${config}" ] && config="/proc/config.gz"
331     getfilevar_noexec "CONFIG_${1}" "${config}"
332 johnm 1.7 }
333    
334 johnm 1.1 # Versioning Functions
335     # ---------------------------------------
336    
337 dsd 1.56 # @FUNCTION: kernel_is
338     # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
339     # @RETURN: true or false
340     # @DESCRIPTION:
341     # It returns true when the current kernel version satisfies the comparison against the passed version.
342     # -eq is the default comparison.
343 johnm 1.1 #
344 dsd 1.56 # @CODE
345 johnm 1.1 # For Example where KV = 2.6.9
346 dsd 1.56 # kernel_is 2 4 returns false
347     # kernel_is 2 returns true
348     # kernel_is 2 6 returns true
349     # kernel_is 2 6 8 returns false
350     # kernel_is 2 6 9 returns true
351     # @CODE
352    
353 johnm 1.1 # got the jist yet?
354    
355     kernel_is() {
356 dsd 1.53 # if we haven't determined the version yet, we need to.
357     get_version
358 johnm 1.23 local operator test value x=0 y=0 z=0
359    
360     case ${1} in
361 robbat2 1.68 -lt|lt) operator="-lt"; shift;;
362     -gt|gt) operator="-gt"; shift;;
363     -le|le) operator="-le"; shift;;
364     -ge|ge) operator="-ge"; shift;;
365     -eq|eq) operator="-eq"; shift;;
366     *) operator="-eq";;
367 johnm 1.23 esac
368    
369     for x in ${@}; do
370     for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
371     value="${value}${x}"
372     z=$((${z} + 1))
373    
374     case ${z} in
375     1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
376     test="${test}${KV_MAJOR}";;
377     2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
378     test="${test}${KV_MINOR}";;
379     3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
380     test="${test}${KV_PATCH}";;
381     *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
382     esac
383     done
384 robbat2 1.61
385 swegener 1.29 [ ${test} ${operator} ${value} ] && return 0 || return 1
386 johnm 1.1 }
387    
388 johnm 1.30 get_localversion() {
389     local lv_list i x
390    
391     # ignore files with ~ in it.
392     for i in $(ls ${1}/localversion* 2>/dev/null); do
393     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
394     done
395    
396     for i in ${lv_list}; do
397     x="${x}$(<${i})"
398     done
399     x=${x/ /}
400     echo ${x}
401     }
402    
403 robbat2 1.63 # internal variable, so we know to only print the warning once
404     get_version_warning_done=
405    
406 dsd 1.56 # @FUNCTION: get_version
407     # @DESCRIPTION:
408     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
409     # (if KV_FULL is already set it does nothing).
410     #
411     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
412     #
413     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
414     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
415     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
416 johnm 1.1 get_version() {
417 johnm 1.4 local kbuild_output
418 swegener 1.29
419 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
420     # we can force by unsetting KV_FULL
421 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
422 johnm 1.1
423     # if we dont know KV_FULL, then we need too.
424     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
425     unset KV_DIR
426    
427     # KV_DIR will contain the full path to the sources directory we should use
428 robbat2 1.63 [ -z "${get_version_warning_done}" ] && \
429 johnm 1.11 qeinfo "Determining the location of the kernel source code"
430 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
431     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
432 swegener 1.29
433 johnm 1.1 if [ -z "${KV_DIR}" ]
434     then
435 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
436     get_version_warning_done=1
437     qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
438     #qeinfo "This package requires Linux sources."
439     if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
440     qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
441     qeinfo "(or the kernel you wish to build against)."
442     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
443     else
444     qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
445     fi
446 johnm 1.7 fi
447 johnm 1.19 return 1
448 johnm 1.7 fi
449    
450 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
451     qeinfo "Found kernel source directory:"
452     qeinfo " ${KV_DIR}"
453     fi
454 johnm 1.7
455     if [ ! -s "${KV_DIR}/Makefile" ]
456     then
457 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
458     get_version_warning_done=1
459     qeerror "Could not find a Makefile in the kernel source directory."
460     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
461     fi
462 johnm 1.19 return 1
463 johnm 1.7 fi
464 swegener 1.29
465 johnm 1.4 # OK so now we know our sources directory, but they might be using
466     # KBUILD_OUTPUT, and we need this for .config and localversions-*
467     # so we better find it eh?
468     # do we pass KBUILD_OUTPUT on the CLI?
469     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
470 swegener 1.29
471 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
472 robbat2 1.61 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
473 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
474 swegener 1.29
475 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
476     # directory name to find version information as this seems insane.
477     # so we parse ${KV_DIR}/Makefile
478 robbat2 1.61 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
479     KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
480     KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
481     KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
482 swegener 1.29
483 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
484     then
485 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
486     get_version_warning_done=1
487     qeerror "Could not detect kernel version."
488     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
489     fi
490 johnm 1.19 return 1
491 johnm 1.7 fi
492 swegener 1.29
493 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
494 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
495     # This *WILL* break if the user is using localversions, but we assume it was
496     # caught before this if they are.
497 genstef 1.49 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
498     OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
499 johnm 1.4
500     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
501     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
502     if [ -n "${KV_OUT_DIR}" ];
503     then
504 johnm 1.11 qeinfo "Found kernel object directory:"
505     qeinfo " ${KV_OUT_DIR}"
506 swegener 1.29
507 johnm 1.30 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
508 johnm 1.4 fi
509 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
510 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
511 johnm 1.21
512 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
513     if linux_config_exists; then
514     KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
515     KV_LOCAL="${KV_LOCAL//\"/}"
516    
517     # For things like git that can append extra stuff:
518     [ -e ${KV_DIR}/scripts/setlocalversion ] &&
519     linux_chkconfig_builtin LOCALVERSION_AUTO &&
520     KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
521 johnm 1.41 fi
522    
523 johnm 1.1 # And we should set KV_FULL to the full expanded version
524     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
525 johnm 1.21
526 johnm 1.11 qeinfo "Found sources for kernel version:"
527     qeinfo " ${KV_FULL}"
528 johnm 1.21
529 johnm 1.19 return 0
530 johnm 1.1 }
531    
532 dsd 1.56 # @FUNCTION: get_running_version
533     # @DESCRIPTION:
534     # It gets the version of the current running kernel and the result is the same as get_version() if the
535     # function can find the sources.
536 johnm 1.23 get_running_version() {
537     KV_FULL=$(uname -r)
538 johnm 1.1
539 johnm 1.23 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
540     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
541     unset KV_FULL
542     get_version
543     return $?
544     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
545     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
546     unset KV_FULL
547     get_version
548     return $?
549     else
550     KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
551     KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
552     KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
553     KV_PATCH=${KV_PATCH//-*}
554     [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
555     && KV_EXTRA="-${KV_FULL#*-}"
556     fi
557     return 0
558     }
559 johnm 1.1
560 robbat2 1.66 # This next function is named with the eclass prefix to avoid conflicts with
561     # some old versionator-like eclass functions.
562    
563     # @FUNCTION: linux-info_get_any_version
564     # @DESCRIPTION:
565     # This attempts to find the version of the sources, and otherwise falls back to
566     # the version of the running kernel.
567     linux-info_get_any_version() {
568     get_version
569 robbat2 1.67 if [[ $? -ne 0 ]]; then
570 robbat2 1.66 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
571     get_running_version
572     fi
573     }
574    
575 johnm 1.1
576     # ebuild check functions
577     # ---------------------------------------
578    
579 dsd 1.56 # @FUNCTION: check_kernel_built
580     # @DESCRIPTION:
581     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
582 johnm 1.1 check_kernel_built() {
583 dsd 1.53 # if we haven't determined the version yet, we need to
584 dsd 1.54 require_configured_kernel
585 dsd 1.53 get_version
586 swegener 1.29
587 johnm 1.16 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
588 johnm 1.1 then
589 johnm 1.16 eerror "These sources have not yet been prepared."
590     eerror "We cannot build against an unprepared tree."
591 johnm 1.1 eerror "To resolve this, please type the following:"
592     eerror
593     eerror "# cd ${KV_DIR}"
594     eerror "# make oldconfig"
595 johnm 1.16 eerror "# make modules_prepare"
596 johnm 1.1 eerror
597     eerror "Then please try merging this module again."
598     die "Kernel sources need compiling first"
599     fi
600     }
601    
602 dsd 1.56 # @FUNCTION: check_modules_supported
603     # @DESCRIPTION:
604     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
605 johnm 1.1 check_modules_supported() {
606     # if we haven't determined the version yet, we need too.
607 dsd 1.53 require_configured_kernel
608     get_version
609 swegener 1.29
610 johnm 1.7 if ! linux_chkconfig_builtin "MODULES"
611 johnm 1.1 then
612     eerror "These sources do not support loading external modules."
613     eerror "to be able to use this module please enable \"Loadable modules support\""
614     eerror "in your kernel, recompile and then try merging this module again."
615 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
616 johnm 1.3 fi
617     }
618    
619 dsd 1.56 # @FUNCTION: check_extra_config
620     # @DESCRIPTION:
621     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
622     # the prefix ~ is not used) doesn't satisfy the directive.
623 johnm 1.3 check_extra_config() {
624 mrness 1.45 local config negate die error reworkmodulenames
625 dsd 1.53 local soft_errors_count=0 hard_errors_count=0 config_required=0
626    
627 dsd 1.55 # if we haven't determined the version yet, we need to
628     get_version
629    
630 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
631     # one is when all of the CONFIG_CHECK options are prefixed with "~".
632     for config in ${CONFIG_CHECK}
633     do
634     if [[ "${config:0:1}" != "~" ]]; then
635     config_required=1
636     break
637     fi
638     done
639    
640     if [[ ${config_required} == 0 ]]; then
641     # In the case where we don't require a .config, we can now bail out
642     # if the user has no .config as there is nothing to do. Otherwise
643     # code later will cause a failure due to missing .config.
644     if ! linux_config_exists; then
645 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
646 robbat2 1.64 ewarn "to absence of any configured kernel sources or compiled"
647     ewarn "config:"
648 robbat2 1.60 for config in ${CONFIG_CHECK}; do
649     ewarn " - ${config#\~}"
650     done
651     ewarn "You're on your own to make sure they are set if needed."
652 dsd 1.53 return 0
653     fi
654     else
655 robbat2 1.64 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
656 dsd 1.53 fi
657 johnm 1.3
658 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
659 maekke 1.58
660 johnm 1.3 for config in ${CONFIG_CHECK}
661     do
662 johnm 1.31 # if we specify any fatal, ensure we honor them
663     die=1
664     error=0
665     negate=0
666     reworkmodulenames=0
667    
668 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
669 mrness 1.45 die=0
670 johnm 1.31 config=${config:1}
671 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
672 mrness 1.45 die=0
673 johnm 1.31 reworkmodulenames=1
674     config=${config:1}
675     fi
676 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
677 mrness 1.45 negate=1
678 johnm 1.44 config=${config:1}
679     fi
680 johnm 1.17
681 johnm 1.31 if [[ ${negate} == 1 ]]; then
682     linux_chkconfig_present ${config} && error=2
683     elif [[ ${reworkmodulenames} == 1 ]]; then
684 mrness 1.45 local temp_config="${config//*:}" i n
685 johnm 1.17 config="${config//:*}"
686 johnm 1.31 if linux_chkconfig_present ${config}; then
687     for i in ${MODULE_NAMES}; do
688 johnm 1.17 n="${i//${temp_config}}"
689 dsd 1.38 [[ -z ${n//\(*} ]] && \
690 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
691 johnm 1.17 done
692 johnm 1.31 error=2
693 johnm 1.17 fi
694 johnm 1.3 else
695 johnm 1.31 linux_chkconfig_present ${config} || error=1
696     fi
697    
698 mrness 1.45 if [[ ${error} > 0 ]]; then
699     local report_func="eerror" local_error
700     local_error="ERROR_${config}"
701     local_error="${!local_error}"
702    
703     if [[ -z "${local_error}" ]]; then
704     # using old, deprecated format.
705     local_error="${config}_ERROR"
706     local_error="${!local_error}"
707     fi
708     if [[ ${die} == 0 && -z "${local_error}" ]]; then
709     #soft errors can be warnings
710     local_error="WARNING_${config}"
711 johnm 1.7 local_error="${!local_error}"
712 mrness 1.45 if [[ -n "${local_error}" ]] ; then
713     report_func="ewarn"
714 johnm 1.44 fi
715 mrness 1.45 fi
716 johnm 1.44
717 mrness 1.45 if [[ -z "${local_error}" ]]; then
718     [[ ${error} == 1 ]] \
719     && local_error="is not set when it should be." \
720     || local_error="should not be set. But it is."
721     local_error="CONFIG_${config}:\t ${local_error}"
722     fi
723     if [[ ${die} == 0 ]]; then
724     ${report_func} " ${local_error}"
725     soft_errors_count=$[soft_errors_count + 1]
726     else
727     ${report_func} " ${local_error}"
728     hard_errors_count=$[hard_errors_count + 1]
729 johnm 1.3 fi
730     fi
731     done
732    
733 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
734 johnm 1.3 eerror "Please check to make sure these options are set correctly."
735 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
736 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
737     eerror "this package again."
738     die "Incorrect kernel configuration options"
739     elif [[ ${soft_errors_count} > 0 ]]; then
740     ewarn "Please check to make sure these options are set correctly."
741     ewarn "Failure to do so may cause unexpected problems."
742     else
743     eend 0
744 johnm 1.1 fi
745     }
746    
747     check_zlibinflate() {
748 dsd 1.53 # if we haven't determined the version yet, we need to
749     require_configured_kernel
750     get_version
751 swegener 1.29
752 johnm 1.1 # although I restructured this code - I really really really dont support it!
753    
754     # bug #27882 - zlib routines are only linked into the kernel
755     # if something compiled into the kernel calls them
756     #
757     # plus, for the cloop module, it appears that there's no way
758     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
759     # is on
760 swegener 1.29
761     local INFLATE
762     local DEFLATE
763 johnm 1.1
764     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
765 swegener 1.29
766 johnm 1.1 ebegin "checking ZLIB_INFLATE"
767 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
768 johnm 1.1 eend $?
769     [ "$?" != 0 ] && die
770 swegener 1.29
771 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
772 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
773 johnm 1.1 eend $?
774     [ "$?" != 0 ] && die
775 swegener 1.29
776 johnm 1.1 local LINENO_START
777     local LINENO_END
778     local SYMBOLS
779     local x
780 swegener 1.29
781 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
782     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
783     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
784     (( LINENO_END = $LINENO_END - 1 ))
785 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
786 johnm 1.1
787     # okay, now we have a list of symbols
788     # we need to check each one in turn, to see whether it is set or not
789     for x in $SYMBOLS ; do
790     if [ "${!x}" = "y" ]; then
791     # we have a winner!
792     einfo "${x} ensures zlib is linked into your kernel - excellent"
793     return 0
794     fi
795     done
796 swegener 1.29
797 johnm 1.1 eerror
798     eerror "This kernel module requires ZLIB library support."
799     eerror "You have enabled zlib support in your kernel, but haven't enabled"
800     eerror "enabled any option that will ensure that zlib is linked into your"
801     eerror "kernel."
802     eerror
803     eerror "Please ensure that you enable at least one of these options:"
804     eerror
805    
806     for x in $SYMBOLS ; do
807     eerror " * $x"
808     done
809    
810     eerror
811     eerror "Please remember to recompile and install your kernel, and reboot"
812     eerror "into your new kernel before attempting to load this kernel module."
813    
814     die "Kernel doesn't include zlib support"
815     }
816 johnm 1.8
817     ################################
818     # Default pkg_setup
819     # Also used when inheriting linux-mod to force a get_version call
820 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
821     # @DESCRIPTION:
822     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
823     # to support the options specified in CONFIG_CHECK (if not null)
824 johnm 1.8 linux-info_pkg_setup() {
825 robbat2 1.66 linux-info_get_any_version
826 phreak 1.48
827     if kernel_is 2 4; then
828     if [ "$( gcc-major-version )" -eq "4" ] ; then
829     echo
830     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
831     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
832     echo
833     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
834     ewarn "newer kernel that supports gcc-4."
835     echo
836     ewarn "Also be aware that bugreports about gcc-4 not working"
837     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
838     echo
839     epause 10
840     fi
841     fi
842    
843 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
844 johnm 1.8 }

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