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Revision 1.75 - (hide annotations) (download)
Fri Dec 11 20:54:06 2009 UTC (4 years, 9 months ago) by robbat2
Branch: MAIN
Changes since 1.74: +32 -4 lines
Add a QA warning if you call linux_chkconfig* and linux_config* was not called.

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 1.75 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.74 2009/12/11 20:42:51 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 robbat2 1.75 # @PRIVATE-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
227     # @DESCRIPTION:
228     # This is only set if one of the linux_config_*exists functions has been called.
229     # We use it for a QA warning that the check for a config has not been performed,
230     # as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
231     # config is available at all.
232     _LINUX_CONFIG_EXISTS_DONE=
233    
234     linux_config_qa_check() {
235     local funcname="$1"
236     if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
237     ewarn "QA: You called $1 before any linux_config_exists!"
238     ewarn "QA: The return value of $1 will NOT gaurenteed later!"
239     fi
240     }
241 dsd 1.53
242 robbat2 1.62 # @FUNCTION: linux_config_src_exists
243     # @RETURN: true or false
244     # @DESCRIPTION:
245     # It returns true if .config exists in a build directory otherwise false
246     linux_config_src_exists() {
247 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
248 robbat2 1.62 [ -s "${KV_OUT_DIR}/.config" ]
249     }
250    
251     # @FUNCTION: linux_config_bin_exists
252     # @RETURN: true or false
253     # @DESCRIPTION:
254     # It returns true if .config exists in /proc, otherwise false
255     linux_config_bin_exists() {
256 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
257 robbat2 1.74 [ -n "${I_KNOW_WHAT_I_AM_DOING}" -a -s "/proc/config.gz" ]
258 robbat2 1.62 }
259    
260 dsd 1.56 # @FUNCTION: linux_config_exists
261     # @RETURN: true or false
262     # @DESCRIPTION:
263     # It returns true if .config exists otherwise false
264 robbat2 1.62 #
265     # This function MUST be checked before using any of the linux_chkconfig_*
266     # functions.
267 dsd 1.53 linux_config_exists() {
268 robbat2 1.62 linux_config_src_exists || linux_config_bin_exists
269 dsd 1.53 }
270    
271 dsd 1.56 # @FUNCTION: require_configured_kernel
272     # @DESCRIPTION:
273     # This function verifies that the current kernel is configured (it checks against the existence of .config)
274     # otherwise it dies.
275 dsd 1.53 require_configured_kernel() {
276 robbat2 1.62 if ! linux_config_src_exists; then
277 dsd 1.53 qeerror "Could not find a usable .config in the kernel source directory."
278     qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
279     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
280     qeerror "it points to the necessary object directory so that it might find .config."
281     die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
282     fi
283     }
284    
285 dsd 1.56 # @FUNCTION: linux_chkconfig_present
286     # @USAGE: option
287     # @RETURN: true or false
288     # @DESCRIPTION:
289 loki_val 1.59 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
290 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
291     # MUST call linux_config_exists first.
292 johnm 1.7 linux_chkconfig_present() {
293 robbat2 1.75 linux_config_qa_check
294     local RESULT
295 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
296     local config
297     config="${KV_OUT_DIR}/.config"
298     [ ! -f "${config}" ] && config="/proc/config.gz"
299     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
300 johnm 1.1 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
301     }
302    
303 dsd 1.56 # @FUNCTION: linux_chkconfig_module
304     # @USAGE: option
305     # @RETURN: true or false
306     # @DESCRIPTION:
307     # It checks that CONFIG_<option>=m is present in the current kernel .config
308 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
309     # MUST call linux_config_exists first.
310 johnm 1.7 linux_chkconfig_module() {
311 robbat2 1.75 linux_config_qa_check
312     local RESULT
313 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
314     local config
315     config="${KV_OUT_DIR}/.config"
316     [ ! -f "${config}" ] && config="/proc/config.gz"
317     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
318 johnm 1.1 [ "${RESULT}" = "m" ] && return 0 || return 1
319     }
320    
321 dsd 1.56 # @FUNCTION: linux_chkconfig_builtin
322     # @USAGE: option
323     # @RETURN: true or false
324     # @DESCRIPTION:
325     # It checks that CONFIG_<option>=y is present in the current kernel .config
326 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
327     # MUST call linux_config_exists first.
328 johnm 1.7 linux_chkconfig_builtin() {
329 robbat2 1.75 linux_config_qa_check
330     local RESULT
331 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
332     local config
333     config="${KV_OUT_DIR}/.config"
334     [ ! -f "${config}" ] && config="/proc/config.gz"
335     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
336 johnm 1.1 [ "${RESULT}" = "y" ] && return 0 || return 1
337     }
338    
339 dsd 1.56 # @FUNCTION: linux_chkconfig_string
340     # @USAGE: option
341     # @RETURN: CONFIG_<option>
342     # @DESCRIPTION:
343     # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
344 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
345     # MUST call linux_config_exists first.
346 johnm 1.7 linux_chkconfig_string() {
347 robbat2 1.75 linux_config_qa_check
348 robbat2 1.62 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
349     local config
350     config="${KV_OUT_DIR}/.config"
351     [ ! -f "${config}" ] && config="/proc/config.gz"
352     getfilevar_noexec "CONFIG_${1}" "${config}"
353 johnm 1.7 }
354    
355 johnm 1.1 # Versioning Functions
356     # ---------------------------------------
357    
358 dsd 1.56 # @FUNCTION: kernel_is
359     # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
360     # @RETURN: true or false
361     # @DESCRIPTION:
362     # It returns true when the current kernel version satisfies the comparison against the passed version.
363     # -eq is the default comparison.
364 johnm 1.1 #
365 dsd 1.56 # @CODE
366 johnm 1.1 # For Example where KV = 2.6.9
367 dsd 1.56 # kernel_is 2 4 returns false
368     # kernel_is 2 returns true
369     # kernel_is 2 6 returns true
370     # kernel_is 2 6 8 returns false
371     # kernel_is 2 6 9 returns true
372     # @CODE
373    
374 johnm 1.1 # got the jist yet?
375    
376     kernel_is() {
377 dsd 1.53 # if we haven't determined the version yet, we need to.
378 robbat2 1.69 linux-info_get_any_version
379    
380 johnm 1.23 local operator test value x=0 y=0 z=0
381    
382     case ${1} in
383 robbat2 1.68 -lt|lt) operator="-lt"; shift;;
384     -gt|gt) operator="-gt"; shift;;
385     -le|le) operator="-le"; shift;;
386     -ge|ge) operator="-ge"; shift;;
387     -eq|eq) operator="-eq"; shift;;
388     *) operator="-eq";;
389 johnm 1.23 esac
390    
391     for x in ${@}; do
392     for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
393     value="${value}${x}"
394     z=$((${z} + 1))
395    
396     case ${z} in
397     1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
398     test="${test}${KV_MAJOR}";;
399     2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
400     test="${test}${KV_MINOR}";;
401     3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
402     test="${test}${KV_PATCH}";;
403     *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
404     esac
405     done
406 maekke 1.73
407 swegener 1.29 [ ${test} ${operator} ${value} ] && return 0 || return 1
408 johnm 1.1 }
409    
410 johnm 1.30 get_localversion() {
411     local lv_list i x
412    
413     # ignore files with ~ in it.
414     for i in $(ls ${1}/localversion* 2>/dev/null); do
415     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
416     done
417    
418     for i in ${lv_list}; do
419     x="${x}$(<${i})"
420     done
421     x=${x/ /}
422     echo ${x}
423     }
424    
425 robbat2 1.63 # internal variable, so we know to only print the warning once
426     get_version_warning_done=
427    
428 dsd 1.56 # @FUNCTION: get_version
429     # @DESCRIPTION:
430     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
431     # (if KV_FULL is already set it does nothing).
432     #
433     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
434     #
435     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
436     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
437     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
438 johnm 1.1 get_version() {
439 johnm 1.4 local kbuild_output
440 swegener 1.29
441 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
442     # we can force by unsetting KV_FULL
443 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
444 johnm 1.1
445     # if we dont know KV_FULL, then we need too.
446     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
447     unset KV_DIR
448    
449     # KV_DIR will contain the full path to the sources directory we should use
450 robbat2 1.63 [ -z "${get_version_warning_done}" ] && \
451 johnm 1.11 qeinfo "Determining the location of the kernel source code"
452 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
453     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
454 swegener 1.29
455 johnm 1.1 if [ -z "${KV_DIR}" ]
456     then
457 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
458     get_version_warning_done=1
459     qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
460     #qeinfo "This package requires Linux sources."
461     if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
462     qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
463     qeinfo "(or the kernel you wish to build against)."
464     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
465     else
466     qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
467     fi
468 johnm 1.7 fi
469 johnm 1.19 return 1
470 johnm 1.7 fi
471    
472 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
473     qeinfo "Found kernel source directory:"
474     qeinfo " ${KV_DIR}"
475     fi
476 johnm 1.7
477     if [ ! -s "${KV_DIR}/Makefile" ]
478     then
479 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
480     get_version_warning_done=1
481     qeerror "Could not find a Makefile in the kernel source directory."
482     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
483     fi
484 johnm 1.19 return 1
485 johnm 1.7 fi
486 swegener 1.29
487 johnm 1.4 # OK so now we know our sources directory, but they might be using
488     # KBUILD_OUTPUT, and we need this for .config and localversions-*
489     # so we better find it eh?
490     # do we pass KBUILD_OUTPUT on the CLI?
491     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
492 swegener 1.29
493 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
494 robbat2 1.61 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)"
495 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
496 swegener 1.29
497 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
498     # directory name to find version information as this seems insane.
499     # so we parse ${KV_DIR}/Makefile
500 robbat2 1.61 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)"
501     KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)"
502     KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)"
503     KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)"
504 swegener 1.29
505 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
506     then
507 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
508     get_version_warning_done=1
509     qeerror "Could not detect kernel version."
510     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
511     fi
512 johnm 1.19 return 1
513 johnm 1.7 fi
514 swegener 1.29
515 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
516 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
517     # This *WILL* break if the user is using localversions, but we assume it was
518     # caught before this if they are.
519 genstef 1.49 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
520     OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
521 johnm 1.4
522     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
523     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
524     if [ -n "${KV_OUT_DIR}" ];
525     then
526 johnm 1.11 qeinfo "Found kernel object directory:"
527     qeinfo " ${KV_OUT_DIR}"
528 swegener 1.29
529 johnm 1.30 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
530 johnm 1.4 fi
531 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
532 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
533 johnm 1.21
534 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
535 robbat2 1.71 if linux_config_src_exists; then
536 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
537     KV_LOCAL="${KV_LOCAL//\"/}"
538    
539     # For things like git that can append extra stuff:
540     [ -e ${KV_DIR}/scripts/setlocalversion ] &&
541     linux_chkconfig_builtin LOCALVERSION_AUTO &&
542     KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
543 johnm 1.41 fi
544    
545 johnm 1.1 # And we should set KV_FULL to the full expanded version
546     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
547 johnm 1.21
548 johnm 1.11 qeinfo "Found sources for kernel version:"
549     qeinfo " ${KV_FULL}"
550 johnm 1.21
551 johnm 1.19 return 0
552 johnm 1.1 }
553    
554 dsd 1.56 # @FUNCTION: get_running_version
555     # @DESCRIPTION:
556     # It gets the version of the current running kernel and the result is the same as get_version() if the
557     # function can find the sources.
558 johnm 1.23 get_running_version() {
559     KV_FULL=$(uname -r)
560 johnm 1.1
561 johnm 1.23 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
562     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
563     unset KV_FULL
564     get_version
565     return $?
566     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
567     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
568     unset KV_FULL
569     get_version
570     return $?
571     else
572     KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
573     KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
574     KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
575     KV_PATCH=${KV_PATCH//-*}
576     [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
577     && KV_EXTRA="-${KV_FULL#*-}"
578     fi
579     return 0
580     }
581 johnm 1.1
582 robbat2 1.66 # This next function is named with the eclass prefix to avoid conflicts with
583     # some old versionator-like eclass functions.
584    
585     # @FUNCTION: linux-info_get_any_version
586     # @DESCRIPTION:
587     # This attempts to find the version of the sources, and otherwise falls back to
588     # the version of the running kernel.
589     linux-info_get_any_version() {
590 maekke 1.73 get_version
591 robbat2 1.67 if [[ $? -ne 0 ]]; then
592 robbat2 1.66 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
593 maekke 1.73 get_running_version
594 robbat2 1.66 fi
595     }
596    
597 johnm 1.1
598     # ebuild check functions
599     # ---------------------------------------
600    
601 dsd 1.56 # @FUNCTION: check_kernel_built
602     # @DESCRIPTION:
603     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
604 johnm 1.1 check_kernel_built() {
605 dsd 1.53 # if we haven't determined the version yet, we need to
606 dsd 1.54 require_configured_kernel
607 dsd 1.53 get_version
608 swegener 1.29
609 johnm 1.16 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
610 johnm 1.1 then
611 johnm 1.16 eerror "These sources have not yet been prepared."
612     eerror "We cannot build against an unprepared tree."
613 johnm 1.1 eerror "To resolve this, please type the following:"
614     eerror
615     eerror "# cd ${KV_DIR}"
616     eerror "# make oldconfig"
617 johnm 1.16 eerror "# make modules_prepare"
618 johnm 1.1 eerror
619     eerror "Then please try merging this module again."
620     die "Kernel sources need compiling first"
621     fi
622     }
623    
624 dsd 1.56 # @FUNCTION: check_modules_supported
625     # @DESCRIPTION:
626     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
627 johnm 1.1 check_modules_supported() {
628     # if we haven't determined the version yet, we need too.
629 dsd 1.53 require_configured_kernel
630     get_version
631 swegener 1.29
632 johnm 1.7 if ! linux_chkconfig_builtin "MODULES"
633 johnm 1.1 then
634     eerror "These sources do not support loading external modules."
635     eerror "to be able to use this module please enable \"Loadable modules support\""
636     eerror "in your kernel, recompile and then try merging this module again."
637 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
638 johnm 1.3 fi
639     }
640    
641 dsd 1.56 # @FUNCTION: check_extra_config
642     # @DESCRIPTION:
643     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
644     # the prefix ~ is not used) doesn't satisfy the directive.
645 johnm 1.3 check_extra_config() {
646 mrness 1.45 local config negate die error reworkmodulenames
647 dsd 1.53 local soft_errors_count=0 hard_errors_count=0 config_required=0
648 robbat2 1.75 # store the value of the QA check, because otherwise we won't catch usages
649     # after if check_extra_config is called AND other direct calls are done
650     # later.
651     local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
652 dsd 1.53
653 dsd 1.55 # if we haven't determined the version yet, we need to
654 robbat2 1.70 linux-info_get_any_version
655 dsd 1.55
656 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
657     # one is when all of the CONFIG_CHECK options are prefixed with "~".
658     for config in ${CONFIG_CHECK}
659     do
660     if [[ "${config:0:1}" != "~" ]]; then
661     config_required=1
662     break
663     fi
664     done
665    
666 robbat2 1.72 # TODO: After we enable the new code for /proc/config.gz, we need to
667     # change this back to linux_config_exists.
668 dsd 1.53 if [[ ${config_required} == 0 ]]; then
669     # In the case where we don't require a .config, we can now bail out
670     # if the user has no .config as there is nothing to do. Otherwise
671     # code later will cause a failure due to missing .config.
672 robbat2 1.72 if ! linux_config_src_exists; then
673 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
674 robbat2 1.64 ewarn "to absence of any configured kernel sources or compiled"
675     ewarn "config:"
676 robbat2 1.60 for config in ${CONFIG_CHECK}; do
677     ewarn " - ${config#\~}"
678     done
679     ewarn "You're on your own to make sure they are set if needed."
680 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
681 dsd 1.53 return 0
682     fi
683     else
684 robbat2 1.64 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel
685 dsd 1.53 fi
686 johnm 1.3
687 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
688 maekke 1.58
689 johnm 1.3 for config in ${CONFIG_CHECK}
690     do
691 johnm 1.31 # if we specify any fatal, ensure we honor them
692     die=1
693     error=0
694     negate=0
695     reworkmodulenames=0
696    
697 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
698 mrness 1.45 die=0
699 johnm 1.31 config=${config:1}
700 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
701 mrness 1.45 die=0
702 johnm 1.31 reworkmodulenames=1
703     config=${config:1}
704     fi
705 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
706 mrness 1.45 negate=1
707 johnm 1.44 config=${config:1}
708     fi
709 johnm 1.17
710 johnm 1.31 if [[ ${negate} == 1 ]]; then
711     linux_chkconfig_present ${config} && error=2
712     elif [[ ${reworkmodulenames} == 1 ]]; then
713 mrness 1.45 local temp_config="${config//*:}" i n
714 johnm 1.17 config="${config//:*}"
715 johnm 1.31 if linux_chkconfig_present ${config}; then
716     for i in ${MODULE_NAMES}; do
717 johnm 1.17 n="${i//${temp_config}}"
718 dsd 1.38 [[ -z ${n//\(*} ]] && \
719 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
720 johnm 1.17 done
721 johnm 1.31 error=2
722 johnm 1.17 fi
723 johnm 1.3 else
724 johnm 1.31 linux_chkconfig_present ${config} || error=1
725     fi
726    
727 mrness 1.45 if [[ ${error} > 0 ]]; then
728     local report_func="eerror" local_error
729     local_error="ERROR_${config}"
730     local_error="${!local_error}"
731    
732     if [[ -z "${local_error}" ]]; then
733     # using old, deprecated format.
734     local_error="${config}_ERROR"
735     local_error="${!local_error}"
736     fi
737     if [[ ${die} == 0 && -z "${local_error}" ]]; then
738     #soft errors can be warnings
739     local_error="WARNING_${config}"
740 johnm 1.7 local_error="${!local_error}"
741 mrness 1.45 if [[ -n "${local_error}" ]] ; then
742     report_func="ewarn"
743 johnm 1.44 fi
744 mrness 1.45 fi
745 johnm 1.44
746 mrness 1.45 if [[ -z "${local_error}" ]]; then
747     [[ ${error} == 1 ]] \
748     && local_error="is not set when it should be." \
749     || local_error="should not be set. But it is."
750     local_error="CONFIG_${config}:\t ${local_error}"
751     fi
752     if [[ ${die} == 0 ]]; then
753     ${report_func} " ${local_error}"
754     soft_errors_count=$[soft_errors_count + 1]
755     else
756     ${report_func} " ${local_error}"
757     hard_errors_count=$[hard_errors_count + 1]
758 johnm 1.3 fi
759     fi
760     done
761    
762 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
763 johnm 1.3 eerror "Please check to make sure these options are set correctly."
764 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
765 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
766     eerror "this package again."
767 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
768 mrness 1.45 die "Incorrect kernel configuration options"
769     elif [[ ${soft_errors_count} > 0 ]]; then
770     ewarn "Please check to make sure these options are set correctly."
771     ewarn "Failure to do so may cause unexpected problems."
772     else
773     eend 0
774 johnm 1.1 fi
775 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
776 johnm 1.1 }
777    
778     check_zlibinflate() {
779 dsd 1.53 # if we haven't determined the version yet, we need to
780     require_configured_kernel
781     get_version
782 swegener 1.29
783 johnm 1.1 # although I restructured this code - I really really really dont support it!
784    
785     # bug #27882 - zlib routines are only linked into the kernel
786     # if something compiled into the kernel calls them
787     #
788     # plus, for the cloop module, it appears that there's no way
789     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
790     # is on
791 swegener 1.29
792     local INFLATE
793     local DEFLATE
794 johnm 1.1
795     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
796 swegener 1.29
797 johnm 1.1 ebegin "checking ZLIB_INFLATE"
798 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
799 johnm 1.1 eend $?
800     [ "$?" != 0 ] && die
801 swegener 1.29
802 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
803 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
804 johnm 1.1 eend $?
805     [ "$?" != 0 ] && die
806 swegener 1.29
807 johnm 1.1 local LINENO_START
808     local LINENO_END
809     local SYMBOLS
810     local x
811 swegener 1.29
812 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
813     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
814     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
815     (( LINENO_END = $LINENO_END - 1 ))
816 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
817 johnm 1.1
818     # okay, now we have a list of symbols
819     # we need to check each one in turn, to see whether it is set or not
820     for x in $SYMBOLS ; do
821     if [ "${!x}" = "y" ]; then
822     # we have a winner!
823     einfo "${x} ensures zlib is linked into your kernel - excellent"
824     return 0
825     fi
826     done
827 swegener 1.29
828 johnm 1.1 eerror
829     eerror "This kernel module requires ZLIB library support."
830     eerror "You have enabled zlib support in your kernel, but haven't enabled"
831     eerror "enabled any option that will ensure that zlib is linked into your"
832     eerror "kernel."
833     eerror
834     eerror "Please ensure that you enable at least one of these options:"
835     eerror
836    
837     for x in $SYMBOLS ; do
838     eerror " * $x"
839     done
840    
841     eerror
842     eerror "Please remember to recompile and install your kernel, and reboot"
843     eerror "into your new kernel before attempting to load this kernel module."
844    
845     die "Kernel doesn't include zlib support"
846     }
847 johnm 1.8
848     ################################
849     # Default pkg_setup
850     # Also used when inheriting linux-mod to force a get_version call
851 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
852     # @DESCRIPTION:
853     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
854     # to support the options specified in CONFIG_CHECK (if not null)
855 johnm 1.8 linux-info_pkg_setup() {
856 robbat2 1.66 linux-info_get_any_version
857 phreak 1.48
858     if kernel_is 2 4; then
859     if [ "$( gcc-major-version )" -eq "4" ] ; then
860     echo
861     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
862     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
863     echo
864     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
865     ewarn "newer kernel that supports gcc-4."
866     echo
867     ewarn "Also be aware that bugreports about gcc-4 not working"
868     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
869     echo
870     epause 10
871     fi
872     fi
873    
874 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
875 johnm 1.8 }

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