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Revision 1.74 - (hide annotations) (download)
Fri Dec 11 20:42:51 2009 UTC (4 years, 9 months ago) by robbat2
Branch: MAIN
Changes since 1.73: +2 -2 lines
Better legacy-mode support for linux-info until the migration is completed, thanks to darkside_ for finding the issue.

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 1.74 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.73 2009/10/11 11:48:33 maekke 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 "${KV_OUT_DIR}/.config" ]
233     }
234    
235     # @FUNCTION: linux_config_bin_exists
236     # @RETURN: true or false
237     # @DESCRIPTION:
238     # It returns true if .config exists in /proc, otherwise false
239     linux_config_bin_exists() {
240 robbat2 1.74 [ -n "${I_KNOW_WHAT_I_AM_DOING}" -a -s "/proc/config.gz" ]
241 robbat2 1.62 }
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 robbat2 1.69 linux-info_get_any_version
358    
359 johnm 1.23 local operator test value x=0 y=0 z=0
360    
361     case ${1} in
362 robbat2 1.68 -lt|lt) operator="-lt"; shift;;
363     -gt|gt) operator="-gt"; shift;;
364     -le|le) operator="-le"; shift;;
365     -ge|ge) operator="-ge"; shift;;
366     -eq|eq) operator="-eq"; shift;;
367     *) operator="-eq";;
368 johnm 1.23 esac
369    
370     for x in ${@}; do
371     for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
372     value="${value}${x}"
373     z=$((${z} + 1))
374    
375     case ${z} in
376     1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
377     test="${test}${KV_MAJOR}";;
378     2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
379     test="${test}${KV_MINOR}";;
380     3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
381     test="${test}${KV_PATCH}";;
382     *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
383     esac
384     done
385 maekke 1.73
386 swegener 1.29 [ ${test} ${operator} ${value} ] && return 0 || return 1
387 johnm 1.1 }
388    
389 johnm 1.30 get_localversion() {
390     local lv_list i x
391    
392     # ignore files with ~ in it.
393     for i in $(ls ${1}/localversion* 2>/dev/null); do
394     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
395     done
396    
397     for i in ${lv_list}; do
398     x="${x}$(<${i})"
399     done
400     x=${x/ /}
401     echo ${x}
402     }
403    
404 robbat2 1.63 # internal variable, so we know to only print the warning once
405     get_version_warning_done=
406    
407 dsd 1.56 # @FUNCTION: get_version
408     # @DESCRIPTION:
409     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
410     # (if KV_FULL is already set it does nothing).
411     #
412     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
413     #
414     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
415     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
416     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
417 johnm 1.1 get_version() {
418 johnm 1.4 local kbuild_output
419 swegener 1.29
420 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
421     # we can force by unsetting KV_FULL
422 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
423 johnm 1.1
424     # if we dont know KV_FULL, then we need too.
425     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
426     unset KV_DIR
427    
428     # KV_DIR will contain the full path to the sources directory we should use
429 robbat2 1.63 [ -z "${get_version_warning_done}" ] && \
430 johnm 1.11 qeinfo "Determining the location of the kernel source code"
431 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
432     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
433 swegener 1.29
434 johnm 1.1 if [ -z "${KV_DIR}" ]
435     then
436 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
437     get_version_warning_done=1
438     qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
439     #qeinfo "This package requires Linux sources."
440     if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
441     qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
442     qeinfo "(or the kernel you wish to build against)."
443     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
444     else
445     qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
446     fi
447 johnm 1.7 fi
448 johnm 1.19 return 1
449 johnm 1.7 fi
450    
451 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
452     qeinfo "Found kernel source directory:"
453     qeinfo " ${KV_DIR}"
454     fi
455 johnm 1.7
456     if [ ! -s "${KV_DIR}/Makefile" ]
457     then
458 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
459     get_version_warning_done=1
460     qeerror "Could not find a Makefile in the kernel source directory."
461     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
462     fi
463 johnm 1.19 return 1
464 johnm 1.7 fi
465 swegener 1.29
466 johnm 1.4 # OK so now we know our sources directory, but they might be using
467     # KBUILD_OUTPUT, and we need this for .config and localversions-*
468     # so we better find it eh?
469     # do we pass KBUILD_OUTPUT on the CLI?
470     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
471 swegener 1.29
472 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
473 robbat2 1.61 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
474 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
475 swegener 1.29
476 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
477     # directory name to find version information as this seems insane.
478     # so we parse ${KV_DIR}/Makefile
479 robbat2 1.61 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
480     KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
481     KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
482     KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
483 swegener 1.29
484 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
485     then
486 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
487     get_version_warning_done=1
488     qeerror "Could not detect kernel version."
489     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
490     fi
491 johnm 1.19 return 1
492 johnm 1.7 fi
493 swegener 1.29
494 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
495 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
496     # This *WILL* break if the user is using localversions, but we assume it was
497     # caught before this if they are.
498 genstef 1.49 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
499     OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
500 johnm 1.4
501     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
502     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
503     if [ -n "${KV_OUT_DIR}" ];
504     then
505 johnm 1.11 qeinfo "Found kernel object directory:"
506     qeinfo " ${KV_OUT_DIR}"
507 swegener 1.29
508 johnm 1.30 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
509 johnm 1.4 fi
510 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
511 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
512 johnm 1.21
513 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
514 robbat2 1.71 if linux_config_src_exists; then
515 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
516     KV_LOCAL="${KV_LOCAL//\"/}"
517    
518     # For things like git that can append extra stuff:
519     [ -e ${KV_DIR}/scripts/setlocalversion ] &&
520     linux_chkconfig_builtin LOCALVERSION_AUTO &&
521     KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
522 johnm 1.41 fi
523    
524 johnm 1.1 # And we should set KV_FULL to the full expanded version
525     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
526 johnm 1.21
527 johnm 1.11 qeinfo "Found sources for kernel version:"
528     qeinfo " ${KV_FULL}"
529 johnm 1.21
530 johnm 1.19 return 0
531 johnm 1.1 }
532    
533 dsd 1.56 # @FUNCTION: get_running_version
534     # @DESCRIPTION:
535     # It gets the version of the current running kernel and the result is the same as get_version() if the
536     # function can find the sources.
537 johnm 1.23 get_running_version() {
538     KV_FULL=$(uname -r)
539 johnm 1.1
540 johnm 1.23 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
541     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
542     unset KV_FULL
543     get_version
544     return $?
545     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
546     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
547     unset KV_FULL
548     get_version
549     return $?
550     else
551     KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
552     KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
553     KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
554     KV_PATCH=${KV_PATCH//-*}
555     [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
556     && KV_EXTRA="-${KV_FULL#*-}"
557     fi
558     return 0
559     }
560 johnm 1.1
561 robbat2 1.66 # This next function is named with the eclass prefix to avoid conflicts with
562     # some old versionator-like eclass functions.
563    
564     # @FUNCTION: linux-info_get_any_version
565     # @DESCRIPTION:
566     # This attempts to find the version of the sources, and otherwise falls back to
567     # the version of the running kernel.
568     linux-info_get_any_version() {
569 maekke 1.73 get_version
570 robbat2 1.67 if [[ $? -ne 0 ]]; then
571 robbat2 1.66 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
572 maekke 1.73 get_running_version
573 robbat2 1.66 fi
574     }
575    
576 johnm 1.1
577     # ebuild check functions
578     # ---------------------------------------
579    
580 dsd 1.56 # @FUNCTION: check_kernel_built
581     # @DESCRIPTION:
582     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
583 johnm 1.1 check_kernel_built() {
584 dsd 1.53 # if we haven't determined the version yet, we need to
585 dsd 1.54 require_configured_kernel
586 dsd 1.53 get_version
587 swegener 1.29
588 johnm 1.16 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
589 johnm 1.1 then
590 johnm 1.16 eerror "These sources have not yet been prepared."
591     eerror "We cannot build against an unprepared tree."
592 johnm 1.1 eerror "To resolve this, please type the following:"
593     eerror
594     eerror "# cd ${KV_DIR}"
595     eerror "# make oldconfig"
596 johnm 1.16 eerror "# make modules_prepare"
597 johnm 1.1 eerror
598     eerror "Then please try merging this module again."
599     die "Kernel sources need compiling first"
600     fi
601     }
602    
603 dsd 1.56 # @FUNCTION: check_modules_supported
604     # @DESCRIPTION:
605     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
606 johnm 1.1 check_modules_supported() {
607     # if we haven't determined the version yet, we need too.
608 dsd 1.53 require_configured_kernel
609     get_version
610 swegener 1.29
611 johnm 1.7 if ! linux_chkconfig_builtin "MODULES"
612 johnm 1.1 then
613     eerror "These sources do not support loading external modules."
614     eerror "to be able to use this module please enable \"Loadable modules support\""
615     eerror "in your kernel, recompile and then try merging this module again."
616 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
617 johnm 1.3 fi
618     }
619    
620 dsd 1.56 # @FUNCTION: check_extra_config
621     # @DESCRIPTION:
622     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
623     # the prefix ~ is not used) doesn't satisfy the directive.
624 johnm 1.3 check_extra_config() {
625 mrness 1.45 local config negate die error reworkmodulenames
626 dsd 1.53 local soft_errors_count=0 hard_errors_count=0 config_required=0
627    
628 dsd 1.55 # if we haven't determined the version yet, we need to
629 robbat2 1.70 linux-info_get_any_version
630 dsd 1.55
631 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
632     # one is when all of the CONFIG_CHECK options are prefixed with "~".
633     for config in ${CONFIG_CHECK}
634     do
635     if [[ "${config:0:1}" != "~" ]]; then
636     config_required=1
637     break
638     fi
639     done
640    
641 robbat2 1.72 # TODO: After we enable the new code for /proc/config.gz, we need to
642     # change this back to linux_config_exists.
643 dsd 1.53 if [[ ${config_required} == 0 ]]; then
644     # In the case where we don't require a .config, we can now bail out
645     # if the user has no .config as there is nothing to do. Otherwise
646     # code later will cause a failure due to missing .config.
647 robbat2 1.72 if ! linux_config_src_exists; then
648 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
649 robbat2 1.64 ewarn "to absence of any configured kernel sources or compiled"
650     ewarn "config:"
651 robbat2 1.60 for config in ${CONFIG_CHECK}; do
652     ewarn " - ${config#\~}"
653     done
654     ewarn "You're on your own to make sure they are set if needed."
655 dsd 1.53 return 0
656     fi
657     else
658 robbat2 1.64 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
659 dsd 1.53 fi
660 johnm 1.3
661 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
662 maekke 1.58
663 johnm 1.3 for config in ${CONFIG_CHECK}
664     do
665 johnm 1.31 # if we specify any fatal, ensure we honor them
666     die=1
667     error=0
668     negate=0
669     reworkmodulenames=0
670    
671 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
672 mrness 1.45 die=0
673 johnm 1.31 config=${config:1}
674 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
675 mrness 1.45 die=0
676 johnm 1.31 reworkmodulenames=1
677     config=${config:1}
678     fi
679 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
680 mrness 1.45 negate=1
681 johnm 1.44 config=${config:1}
682     fi
683 johnm 1.17
684 johnm 1.31 if [[ ${negate} == 1 ]]; then
685     linux_chkconfig_present ${config} && error=2
686     elif [[ ${reworkmodulenames} == 1 ]]; then
687 mrness 1.45 local temp_config="${config//*:}" i n
688 johnm 1.17 config="${config//:*}"
689 johnm 1.31 if linux_chkconfig_present ${config}; then
690     for i in ${MODULE_NAMES}; do
691 johnm 1.17 n="${i//${temp_config}}"
692 dsd 1.38 [[ -z ${n//\(*} ]] && \
693 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
694 johnm 1.17 done
695 johnm 1.31 error=2
696 johnm 1.17 fi
697 johnm 1.3 else
698 johnm 1.31 linux_chkconfig_present ${config} || error=1
699     fi
700    
701 mrness 1.45 if [[ ${error} > 0 ]]; then
702     local report_func="eerror" local_error
703     local_error="ERROR_${config}"
704     local_error="${!local_error}"
705    
706     if [[ -z "${local_error}" ]]; then
707     # using old, deprecated format.
708     local_error="${config}_ERROR"
709     local_error="${!local_error}"
710     fi
711     if [[ ${die} == 0 && -z "${local_error}" ]]; then
712     #soft errors can be warnings
713     local_error="WARNING_${config}"
714 johnm 1.7 local_error="${!local_error}"
715 mrness 1.45 if [[ -n "${local_error}" ]] ; then
716     report_func="ewarn"
717 johnm 1.44 fi
718 mrness 1.45 fi
719 johnm 1.44
720 mrness 1.45 if [[ -z "${local_error}" ]]; then
721     [[ ${error} == 1 ]] \
722     && local_error="is not set when it should be." \
723     || local_error="should not be set. But it is."
724     local_error="CONFIG_${config}:\t ${local_error}"
725     fi
726     if [[ ${die} == 0 ]]; then
727     ${report_func} " ${local_error}"
728     soft_errors_count=$[soft_errors_count + 1]
729     else
730     ${report_func} " ${local_error}"
731     hard_errors_count=$[hard_errors_count + 1]
732 johnm 1.3 fi
733     fi
734     done
735    
736 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
737 johnm 1.3 eerror "Please check to make sure these options are set correctly."
738 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
739 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
740     eerror "this package again."
741     die "Incorrect kernel configuration options"
742     elif [[ ${soft_errors_count} > 0 ]]; then
743     ewarn "Please check to make sure these options are set correctly."
744     ewarn "Failure to do so may cause unexpected problems."
745     else
746     eend 0
747 johnm 1.1 fi
748     }
749    
750     check_zlibinflate() {
751 dsd 1.53 # if we haven't determined the version yet, we need to
752     require_configured_kernel
753     get_version
754 swegener 1.29
755 johnm 1.1 # although I restructured this code - I really really really dont support it!
756    
757     # bug #27882 - zlib routines are only linked into the kernel
758     # if something compiled into the kernel calls them
759     #
760     # plus, for the cloop module, it appears that there's no way
761     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
762     # is on
763 swegener 1.29
764     local INFLATE
765     local DEFLATE
766 johnm 1.1
767     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
768 swegener 1.29
769 johnm 1.1 ebegin "checking ZLIB_INFLATE"
770 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
771 johnm 1.1 eend $?
772     [ "$?" != 0 ] && die
773 swegener 1.29
774 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
775 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
776 johnm 1.1 eend $?
777     [ "$?" != 0 ] && die
778 swegener 1.29
779 johnm 1.1 local LINENO_START
780     local LINENO_END
781     local SYMBOLS
782     local x
783 swegener 1.29
784 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
785     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
786     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
787     (( LINENO_END = $LINENO_END - 1 ))
788 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
789 johnm 1.1
790     # okay, now we have a list of symbols
791     # we need to check each one in turn, to see whether it is set or not
792     for x in $SYMBOLS ; do
793     if [ "${!x}" = "y" ]; then
794     # we have a winner!
795     einfo "${x} ensures zlib is linked into your kernel - excellent"
796     return 0
797     fi
798     done
799 swegener 1.29
800 johnm 1.1 eerror
801     eerror "This kernel module requires ZLIB library support."
802     eerror "You have enabled zlib support in your kernel, but haven't enabled"
803     eerror "enabled any option that will ensure that zlib is linked into your"
804     eerror "kernel."
805     eerror
806     eerror "Please ensure that you enable at least one of these options:"
807     eerror
808    
809     for x in $SYMBOLS ; do
810     eerror " * $x"
811     done
812    
813     eerror
814     eerror "Please remember to recompile and install your kernel, and reboot"
815     eerror "into your new kernel before attempting to load this kernel module."
816    
817     die "Kernel doesn't include zlib support"
818     }
819 johnm 1.8
820     ################################
821     # Default pkg_setup
822     # Also used when inheriting linux-mod to force a get_version call
823 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
824     # @DESCRIPTION:
825     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
826     # to support the options specified in CONFIG_CHECK (if not null)
827 johnm 1.8 linux-info_pkg_setup() {
828 robbat2 1.66 linux-info_get_any_version
829 phreak 1.48
830     if kernel_is 2 4; then
831     if [ "$( gcc-major-version )" -eq "4" ] ; then
832     echo
833     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
834     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
835     echo
836     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
837     ewarn "newer kernel that supports gcc-4."
838     echo
839     ewarn "Also be aware that bugreports about gcc-4 not working"
840     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
841     echo
842     epause 10
843     fi
844     fi
845    
846 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
847 johnm 1.8 }

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