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XXX: Temporarily disable vmem_size().
[mirror_spl.git] / config / spl-build.m4
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57d86234 1AC_DEFUN([SPL_AC_KERNEL], [
2 ver=`uname -r`
3
4 AC_ARG_WITH([linux],
5 AS_HELP_STRING([--with-linux=PATH],
6 [Path to kernel source]),
7 [kernelsrc="$withval"; kernelbuild="$withval"])
8
9 AC_ARG_WITH([linux-obj],
10 AS_HELP_STRING([--with-linux-obj=PATH],
11 [Path to kernel build objects]),
12 [kernelbuild="$withval"])
13
14 AC_MSG_CHECKING([kernel source directory])
15 if test -z "$kernelsrc"; then
16 kernelbuild=
17 sourcelink=/lib/modules/${ver}/source
18 buildlink=/lib/modules/${ver}/build
19
20 if test -e $sourcelink; then
21 kernelsrc=`(cd $sourcelink; /bin/pwd)`
22 fi
23 if test -e $buildlink; then
24 kernelbuild=`(cd $buildlink; /bin/pwd)`
25 fi
26 if test -z "$kernelsrc"; then
27 kernelsrc=$kernelbuild
28 fi
29 if test -z "$kernelsrc" -o -z "$kernelbuild"; then
30 AC_MSG_RESULT([Not found])
31 AC_MSG_ERROR([
32 *** Please specify the location of the kernel source
6a1c3d41 33 *** with the '--with-linux=PATH' option])
57d86234 34 fi
35 fi
36
37 AC_MSG_RESULT([$kernelsrc])
38 AC_MSG_CHECKING([kernel build directory])
39 AC_MSG_RESULT([$kernelbuild])
40
41 AC_MSG_CHECKING([kernel source version])
42 if test -r $kernelbuild/include/linux/version.h &&
43 fgrep -q UTS_RELEASE $kernelbuild/include/linux/version.h; then
44
45 kernsrcver=`(echo "#include <linux/version.h>";
46 echo "kernsrcver=UTS_RELEASE") |
47 cpp -I $kernelbuild/include |
48 grep "^kernsrcver=" | cut -d \" -f 2`
49
50 elif test -r $kernelbuild/include/linux/utsrelease.h &&
51 fgrep -q UTS_RELEASE $kernelbuild/include/linux/utsrelease.h; then
52
53 kernsrcver=`(echo "#include <linux/utsrelease.h>";
54 echo "kernsrcver=UTS_RELEASE") |
55 cpp -I $kernelbuild/include |
56 grep "^kernsrcver=" | cut -d \" -f 2`
57 fi
58
59 if test -z "$kernsrcver"; then
60 AC_MSG_RESULT([Not found])
61 AC_MSG_ERROR([
62 *** Cannot determine the version of the linux kernel source.
63 *** Please prepare the kernel before running this script])
64 fi
65
66 AC_MSG_RESULT([$kernsrcver])
67
68 kmoduledir=${INSTALL_MOD_PATH}/lib/modules/$kernsrcver
69 LINUX=${kernelsrc}
70 LINUX_OBJ=${kernelbuild}
71
72 AC_SUBST(LINUX)
73 AC_SUBST(LINUX_OBJ)
74 AC_SUBST(kmoduledir)
75])
76
6a1c3d41 77AC_DEFUN([SPL_AC_LICENSE], [
78 AC_MSG_CHECKING([license])
79 AC_MSG_RESULT([GPL])
80 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DHAVE_GPL_ONLY_SYMBOLS"
81])
82
57d86234 83AC_DEFUN([SPL_AC_DEBUG], [
84 AC_MSG_CHECKING([whether debugging is enabled])
85 AC_ARG_ENABLE( [debug],
86 AS_HELP_STRING([--enable-debug],
87 [Enable generic debug support (default off)]),
88 [ case "$enableval" in
89 yes) spl_ac_debug=yes ;;
475cdc78 90 no) spl_ac_debug=no ;;
57d86234 91 *) AC_MSG_RESULT([Error!])
92 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug]) ;;
93 esac ]
94 )
95 if test "$spl_ac_debug" = yes; then
475cdc78 96 AC_MSG_RESULT([yes])
57d86234 97 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG"
98 else
475cdc78 99 AC_MSG_RESULT([no])
475cdc78 100 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG"
57d86234 101 fi
57d86234 102])
103
104AC_DEFUN([SPL_AC_DEBUG_KMEM], [
105 AC_MSG_CHECKING([whether kmem debugging is enabled])
106 AC_ARG_ENABLE( [debug-kmem],
107 AS_HELP_STRING([--enable-debug-kmem],
108 [Enable kmem debug support (default off)]),
109 [ case "$enableval" in
475cdc78 110 yes) spl_ac_debug_kmem=yes ;;
111 no) spl_ac_debug_kmem=no ;;
57d86234 112 *) AC_MSG_RESULT([Error!])
113 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kmem]) ;;
114 esac ]
115 )
475cdc78 116 if test "$spl_ac_debug_kmem" = yes; then
117 AC_MSG_RESULT([yes])
57d86234 118 AC_DEFINE([DEBUG_KMEM], [1],
119 [Define to 1 to enable kmem debugging])
475cdc78 120 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"
121 else
122 AC_MSG_RESULT([no])
57d86234 123 fi
57d86234 124])
125
126AC_DEFUN([SPL_AC_DEBUG_MUTEX], [
127 AC_MSG_CHECKING([whether mutex debugging is enabled])
128 AC_ARG_ENABLE( [debug-mutex],
129 AS_HELP_STRING([--enable-debug-mutex],
130 [Enable mutex debug support (default off)]),
131 [ case "$enableval" in
475cdc78 132 yes) spl_ac_debug_mutex=yes ;;
133 no) spl_ac_debug_mutex=no ;;
57d86234 134 *) AC_MSG_RESULT([Error!])
135 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-mutex]) ;;
136 esac ]
137 )
475cdc78 138 if test "$spl_ac_debug_mutex" = yes; then
139 AC_MSG_RESULT([yes])
57d86234 140 AC_DEFINE([DEBUG_MUTEX], [1],
141 [Define to 1 to enable mutex debugging])
475cdc78 142 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_MUTEX"
143 else
144 AC_MSG_RESULT([no])
57d86234 145 fi
57d86234 146])
147
148AC_DEFUN([SPL_AC_DEBUG_KSTAT], [
149 AC_MSG_CHECKING([whether kstat debugging is enabled])
150 AC_ARG_ENABLE( [debug-kstat],
151 AS_HELP_STRING([--enable-debug-kstat],
152 [Enable kstat debug support (default off)]),
153 [ case "$enableval" in
475cdc78 154 yes) spl_ac_debug_kstat=yes ;;
155 no) spl_ac_debug_kstat=no ;;
57d86234 156 *) AC_MSG_RESULT([Error!])
157 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kstat]) ;;
158 esac ]
159 )
475cdc78 160 if test "$spl_ac_debug_kstat" = yes; then
161 AC_MSG_RESULT([yes])
57d86234 162 AC_DEFINE([DEBUG_KSTAT], [1],
163 [Define to 1 to enable kstat debugging])
475cdc78 164 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KSTAT"
165 else
166 AC_MSG_RESULT([no])
57d86234 167 fi
57d86234 168])
169
170AC_DEFUN([SPL_AC_DEBUG_CALLB], [
171 AC_MSG_CHECKING([whether callb debugging is enabled])
172 AC_ARG_ENABLE( [debug-callb],
173 AS_HELP_STRING([--enable-debug-callb],
174 [Enable callb debug support (default off)]),
175 [ case "$enableval" in
475cdc78 176 yes) spl_ac_debug_callb=yes ;;
177 no) spl_ac_debug_callb=no ;;
57d86234 178 *) AC_MSG_RESULT([Error!])
179 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-callb]) ;;
180 esac ]
181 )
475cdc78 182 if test "$spl_ac_debug_callb" = yes; then
183 AC_MSG_RESULT([yes])
57d86234 184 AC_DEFINE([DEBUG_CALLB], [1],
185 [Define to 1 to enable callb debugging])
475cdc78 186 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_CALLB"
187 else
188 AC_MSG_RESULT([no])
57d86234 189 fi
57d86234 190])
191
192dnl #
193dnl # SPL_LINUX_CONFTEST
194dnl #
195AC_DEFUN([SPL_LINUX_CONFTEST], [
196cat >conftest.c <<_ACEOF
197$1
198_ACEOF
199])
200
201dnl #
202dnl # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY])
203dnl #
204m4_define([SPL_LANG_PROGRAM], [
205$1
206int
207main (void)
208{
209dnl Do *not* indent the following line: there may be CPP directives.
210dnl Don't move the `;' right after for the same reason.
211$2
212 ;
213 return 0;
214}
215])
216
217dnl #
218dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE
219dnl #
220AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [
221m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])])dnl
222rm -f build/conftest.o build/conftest.mod.c build/conftest.ko build/Makefile
223echo "obj-m := conftest.o" >build/Makefile
d1ff2312
BB		 224dnl AS_IF([AC_TRY_COMMAND(cp conftest.c build && make [$2] CC="$CC" -f $PWD/build/Makefile LINUXINCLUDE="-Iinclude -Iinclude2 -I$LINUX/include -include include/linux/autoconf.h" -o tmp_include_depends -o scripts -o include/config/MARKER -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM SUBDIRS=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
225AS_IF([AC_TRY_COMMAND(cp conftest.c build && make [$2] CC="$CC" LINUXINCLUDE="-Iinclude -Iinclude2 -I$LINUX/include -include include/linux/autoconf.h" -o tmp_include_depends -o scripts -o include/config/MARKER -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
57d86234 226 [$4],
227 [_AC_MSG_LOG_CONFTEST
228m4_ifvaln([$5],[$5])dnl])dnl
229rm -f build/conftest.o build/conftest.mod.c build/conftest.mod.o build/conftest.ko m4_ifval([$1], [build/conftest.c conftest.c])[]dnl
230])
231
232dnl #
233dnl # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE
234dnl #
235AC_DEFUN([SPL_LINUX_TRY_COMPILE],
236 [SPL_LINUX_COMPILE_IFELSE(
d50bd9e2 237 [AC_LANG_SOURCE([SPL_LANG_PROGRAM([[$1]], [[$2]])])],
238 [modules],
239 [test -s build/conftest.o],
240 [$3], [$4])
57d86234 241])
242
243dnl #
244dnl # SPL_LINUX_CONFIG
245dnl #
246AC_DEFUN([SPL_LINUX_CONFIG],
247 [AC_MSG_CHECKING([whether Linux was built with CONFIG_$1])
248 SPL_LINUX_TRY_COMPILE([
249 #ifndef AUTOCONF_INCLUDED
250 #include <linux/config.h>
251 #endif
252 ],[
253 #ifndef CONFIG_$1
254 #error CONFIG_$1 not #defined
255 #endif
256 ],[
257 AC_MSG_RESULT([yes])
258 $2
259 ],[
260 AC_MSG_RESULT([no])
261 $3
262 ])
263])
264
265dnl #
266dnl # SPL_CHECK_SYMBOL_EXPORT
267dnl # check symbol exported or not
268dnl #
269AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT],
270 [AC_MSG_CHECKING([whether symbol $1 is exported])
d1ff2312 271 grep -q -E '[[[:space:]]]$1[[[:space:]]]' $LINUX_OBJ/Module.symvers 2>/dev/null
57d86234 272 rc=$?
273 if test $rc -ne 0; then
274 export=0
275 for file in $2; do
d1ff2312 276 grep -q -E "EXPORT_SYMBOL.*($1)" "$LINUX_OBJ/$file" 2>/dev/null
57d86234 277 rc=$?
278 if test $rc -eq 0; then
279 export=1
280 break;
281 fi
282 done
283 if test $export -eq 0; then
284 AC_MSG_RESULT([no])
285 $4
286 else
287 AC_MSG_RESULT([yes])
288 $3
289 fi
290 else
291 AC_MSG_RESULT([yes])
292 $3
293 fi
294])
295
86de8532 296dnl #
297dnl # SPL_CHECK_HEADER
298dnl # check whether header exists and define HAVE_$2_HEADER
299dnl #
300AC_DEFUN([SPL_CHECK_HEADER],
301 [AC_MSG_CHECKING([whether header $1 exists])
302 SPL_LINUX_TRY_COMPILE([
d50bd9e2 303 #include <$1>
86de8532 304 ],[
305 return 0;
306 ],[
307 AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists])
308 AC_MSG_RESULT(yes)
309 $3
310 ],[
311 AC_MSG_RESULT(no)
312 $4
313 ])
314])
6a6cafbe 315
57d86234 316dnl #
3d061e9d 317dnl # 2.6.24 API change,
57d86234 318dnl # check if uintptr_t typedef is defined
319dnl #
320AC_DEFUN([SPL_AC_TYPE_UINTPTR_T],
321 [AC_MSG_CHECKING([whether kernel defines uintptr_t])
322 SPL_LINUX_TRY_COMPILE([
d50bd9e2 323 #include <linux/types.h>
57d86234 324 ],[
d50bd9e2 325 uintptr_t *ptr;
57d86234 326 ],[
d50bd9e2 327 AC_MSG_RESULT([yes])
328 AC_DEFINE(HAVE_UINTPTR_T, 1,
57d86234 329 [kernel defines uintptr_t])
330 ],[
d50bd9e2 331 AC_MSG_RESULT([no])
57d86234 332 ])
333])
334
a0f6da3d 335dnl #
336dnl # 2.6.x API change,
337dnl # check if atomic64_t typedef is defined
338dnl #
339AC_DEFUN([SPL_AC_TYPE_ATOMIC64_T],
340 [AC_MSG_CHECKING([whether kernel defines atomic64_t])
341 SPL_LINUX_TRY_COMPILE([
342 #include <asm/atomic.h>
343 ],[
344 atomic64_t *ptr;
345 ],[
346 AC_MSG_RESULT([yes])
347 AC_DEFINE(HAVE_ATOMIC64_T, 1,
348 [kernel defines atomic64_t])
349 ],[
350 AC_MSG_RESULT([no])
351 ])
352])
353
57d86234 354dnl #
3d061e9d 355dnl # 2.6.20 API change,
57d86234 356dnl # INIT_WORK use 2 args and not store data inside
357dnl #
358AC_DEFUN([SPL_AC_3ARGS_INIT_WORK],
359 [AC_MSG_CHECKING([whether INIT_WORK wants 3 args])
360 SPL_LINUX_TRY_COMPILE([
d50bd9e2 361 #include <linux/workqueue.h>
57d86234 362 ],[
d50bd9e2 363 struct work_struct work;
364 INIT_WORK(&work, NULL, NULL);
57d86234 365 ],[
d50bd9e2 366 AC_MSG_RESULT(yes)
367 AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1,
368 [INIT_WORK wants 3 args])
57d86234 369 ],[
d50bd9e2 370 AC_MSG_RESULT(no)
57d86234 371 ])
372])
373
374dnl #
3d061e9d 375dnl # 2.6.21 API change,
57d86234 376dnl # 'register_sysctl_table' use only one argument instead of two
377dnl #
378AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL],
379 [AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args])
380 SPL_LINUX_TRY_COMPILE([
d50bd9e2 381 #include <linux/sysctl.h>
57d86234 382 ],[
d50bd9e2 383 return register_sysctl_table(NULL,0);
57d86234 384 ],[
d50bd9e2 385 AC_MSG_RESULT(yes)
386 AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
387 [register_sysctl_table() wants 2 args])
57d86234 388 ],[
d50bd9e2 389 AC_MSG_RESULT(no)
57d86234 390 ])
391])
392
57d86234 393dnl #
3d061e9d 394dnl # 2.6.23 API change
57d86234 395dnl # Old set_shrinker API replaced with register_shrinker
396dnl #
397AC_DEFUN([SPL_AC_SET_SHRINKER], [
398 AC_MSG_CHECKING([whether set_shrinker() available])
399 SPL_LINUX_TRY_COMPILE([
400 #include <linux/mm.h>
401 ],[
402 return set_shrinker(DEFAULT_SEEKS, NULL);
403 ],[
404 AC_MSG_RESULT([yes])
405 AC_DEFINE(HAVE_SET_SHRINKER, 1,
406 [set_shrinker() available])
407 ],[
408 AC_MSG_RESULT([no])
409 ])
410])
411
412dnl #
3d061e9d 413dnl # 2.6.25 API change,
57d86234 414dnl # struct path entry added to struct nameidata
415dnl #
416AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA],
417 [AC_MSG_CHECKING([whether struct path used in struct nameidata])
418 SPL_LINUX_TRY_COMPILE([
d50bd9e2 419 #include <linux/namei.h>
57d86234 420 ],[
d50bd9e2 421 struct nameidata nd;
57d86234 422
423 nd.path.mnt = NULL;
424 nd.path.dentry = NULL;
425 ],[
d50bd9e2 426 AC_MSG_RESULT(yes)
427 AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1,
428 [struct path used in struct nameidata])
57d86234 429 ],[
d50bd9e2 430 AC_MSG_RESULT(no)
57d86234 431 ])
432])
433
434dnl #
435dnl # Custom SPL patch may export this system it is not required
436dnl #
437AC_DEFUN([SPL_AC_TASK_CURR], [
438 SPL_CHECK_SYMBOL_EXPORT([task_curr], [kernel/sched.c],
439 [AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() exported])],
440 [])
441])
442
443dnl #
3d061e9d 444dnl # 2.6.19 API change,
57d86234 445dnl # Use CTL_UNNUMBERED when binary sysctl is not required
446dnl #
447AC_DEFUN([SPL_AC_CTL_UNNUMBERED],
448 [AC_MSG_CHECKING([whether unnumbered sysctl support exists])
449 SPL_LINUX_TRY_COMPILE([
d50bd9e2 450 #include <linux/sysctl.h>
57d86234 451 ],[
452 #ifndef CTL_UNNUMBERED
453 #error CTL_UNNUMBERED undefined
454 #endif
455 ],[
d50bd9e2 456 AC_MSG_RESULT(yes)
457 AC_DEFINE(HAVE_CTL_UNNUMBERED, 1,
458 [unnumbered sysctl support exists])
57d86234 459 ],[
d50bd9e2 460 AC_MSG_RESULT(no)
57d86234 461 ])
462])
877a32e9 463
464dnl #
465dnl # 2.6.16 API change.
466dnl # Check if 'fls64()' is available
467dnl #
468AC_DEFUN([SPL_AC_FLS64],
6a6cafbe 469 [AC_MSG_CHECKING([whether fls64() is available])
470 SPL_LINUX_TRY_COMPILE([
471 #include <linux/bitops.h>
472 ],[
473 return fls64(0);
474 ],[
475 AC_MSG_RESULT(yes)
476 AC_DEFINE(HAVE_FLS64, 1, [fls64() is available])
477 ],[
478 AC_MSG_RESULT(no)
479 ])
877a32e9 480])
46c685d0 481
482dnl #
483dnl # 2.6.18 API change, check whether device_create() is available.
484dnl # Device_create() was introduced in 2.6.18 and depricated
485dnl # class_device_create() which was fully removed in 2.6.26.
486dnl #
487AC_DEFUN([SPL_AC_DEVICE_CREATE], [
488 SPL_CHECK_SYMBOL_EXPORT(
489 [device_create],
490 [drivers/base/core.c],
491 [AC_DEFINE(HAVE_DEVICE_CREATE, 1,
492 [device_create() is available])],
6a6cafbe 493 [])
46c685d0 494])
495
496dnl #
497dnl # 2.6.13 API change, check whether class_device_create() is available.
498dnl # Class_device_create() was introduced in 2.6.13 and depricated
499dnl # class_simple_device_add() which was fully removed in 2.6.13.
500dnl #
501AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], [
502 SPL_CHECK_SYMBOL_EXPORT(
503 [class_device_create],
504 [drivers/base/class.c],
505 [AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1,
506 [class_device_create() is available])],
6a6cafbe 507 [])
46c685d0 508])
6a6cafbe 509
6a6cafbe 510dnl #
511dnl # 2.6.26 API change, set_normalized_timespec() is exported.
512dnl #
513AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT], [
514 SPL_CHECK_SYMBOL_EXPORT(
515 [set_normalized_timespec],
516 [kernel/time.c],
517 [AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1,
518 [set_normalized_timespec() is available as export])],
519 [])
520])
521
522dnl #
523dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c
524dnl # previously it was available in time.h as an inline.
525dnl #
86de8532 526AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [
527 AC_MSG_CHECKING([whether set_normalized_timespec() is an inline])
6a6cafbe 528 SPL_LINUX_TRY_COMPILE([
529 #include <linux/time.h>
6a6cafbe 530 void set_normalized_timespec(struct timespec *ts,
25557fd8 531 time_t sec, long nsec) { }
532 ],
533 [],
534 [
6a6cafbe 535 AC_MSG_RESULT(no)
536 ],[
537 AC_MSG_RESULT(yes)
538 AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1,
539 [set_normalized_timespec() is available as inline])
540 ])
541])
542
543dnl #
544dnl # 2.6.18 API change,
545dnl # timespec_sub() inline function available in linux/time.h
546dnl #
86de8532 547AC_DEFUN([SPL_AC_TIMESPEC_SUB], [
548 AC_MSG_CHECKING([whether timespec_sub() is available])
6a6cafbe 549 SPL_LINUX_TRY_COMPILE([
550 #include <linux/time.h>
551 ],[
552 struct timespec a, b, c = { 0 };
553 c = timespec_sub(a, b);
554 ],[
555 AC_MSG_RESULT(yes)
556 AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available])
557 ],[
558 AC_MSG_RESULT(no)
559 ])
560])
561
86de8532 562dnl #
3d061e9d 563dnl # 2.6.19 API change,
564dnl # check if init_utsname() is available in linux/utsname.h
565dnl #
566AC_DEFUN([SPL_AC_INIT_UTSNAME], [
567 AC_MSG_CHECKING([whether init_utsname() is available])
568 SPL_LINUX_TRY_COMPILE([
569 #include <linux/utsname.h>
570 ],[
571 struct new_utsname *a = init_utsname();
572 ],[
573 AC_MSG_RESULT(yes)
574 AC_DEFINE(HAVE_INIT_UTSNAME, 1, [init_utsname() is available])
575 ],[
576 AC_MSG_RESULT(no)
577 ])
578])
579
580dnl #
581dnl # 2.6.26 API change,
582dnl # definition of struct fdtable relocated to linux/fdtable.h
86de8532 583dnl #
584AC_DEFUN([SPL_AC_FDTABLE_HEADER], [
585 SPL_CHECK_HEADER([linux/fdtable.h], [FDTABLE], [], [])
586])
322640b7 587
588dnl #
3d061e9d 589dnl # 2.6.14 API change,
590dnl # check whether 'files_fdtable()' exists
591dnl #
592AC_DEFUN([SPL_AC_FILES_FDTABLE], [
593 AC_MSG_CHECKING([whether files_fdtable() is available])
594 SPL_LINUX_TRY_COMPILE([
595 #include <linux/sched.h>
596 #include <linux/file.h>
597 #ifdef HAVE_FDTABLE_HEADER
598 #include <linux/fdtable.h>
599 #endif
600 ],[
601 struct files_struct *files = current->files;
602 struct fdtable *fdt = files_fdtable(files);
603 ],[
604 AC_MSG_RESULT(yes)
605 AC_DEFINE(HAVE_FILES_FDTABLE, 1, [files_fdtable() is available])
606 ],[
607 AC_MSG_RESULT(no)
608 ])
609])
610
611dnl #
612dnl # 2.6.18 API change,
613dnl # added linux/uaccess.h
322640b7 614dnl #
615AC_DEFUN([SPL_AC_UACCESS_HEADER], [
616 SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], [])
617])
3d061e9d 618
619dnl #
620dnl # 2.6.12 API change,
621dnl # check whether 'kmalloc_node()' is available.
622dnl #
623AC_DEFUN([SPL_AC_KMALLOC_NODE], [
624 AC_MSG_CHECKING([whether kmalloc_node() is available])
625 SPL_LINUX_TRY_COMPILE([
626 #include <linux/slab.h>
627 ],[
628 void *a = kmalloc_node(1, GFP_KERNEL, 0);
629 ],[
630 AC_MSG_RESULT(yes)
631 AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available])
632 ],[
633 AC_MSG_RESULT(no)
634 ])
635])
636
637dnl #
638dnl # 2.6.9 API change,
639dnl # check whether 'monotonic_clock()' is available it may
640dnl # be available for some archs but not others.
641dnl #
642AC_DEFUN([SPL_AC_MONOTONIC_CLOCK], [
643 SPL_CHECK_SYMBOL_EXPORT(
644 [monotonic_clock],
645 [],
646 [AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1,
647 [monotonic_clock() is available])],
648 [])
649])
650
651dnl #
652dnl # 2.6.16 API change,
653dnl # check whether 'struct inode' has i_mutex
654dnl #
655AC_DEFUN([SPL_AC_INODE_I_MUTEX], [
656 AC_MSG_CHECKING([whether struct inode has i_mutex])
657 SPL_LINUX_TRY_COMPILE([
658 #include <linux/fs.h>
659 #include <linux/mutex.h>
660 ],[
661 struct inode i;
662 mutex_init(&i.i_mutex);
663 ],[
664 AC_MSG_RESULT(yes)
665 AC_DEFINE(HAVE_INODE_I_MUTEX, 1, [struct inode has i_mutex])
666 ],[
667 AC_MSG_RESULT(no)
668 ])
669])
b61a6e8b 670
671dnl #
672dnl # 2.6.14 API change,
673dnl # check whether 'div64_64()' is available
674dnl #
675AC_DEFUN([SPL_AC_DIV64_64], [
676 AC_MSG_CHECKING([whether div64_64() is available])
677 SPL_LINUX_TRY_COMPILE([
678 #include <asm/div64.h>
550f1705 679 #include <linux/types.h>
b61a6e8b 680 ],[
681 uint64_t i = div64_64(1ULL, 1ULL);
682 ],[
683 AC_MSG_RESULT(yes)
684 AC_DEFINE(HAVE_DIV64_64, 1, [div64_64() is available])
685 ],[
686 AC_MSG_RESULT(no)
687 ])
688])
31a033ec
BB		 689
690dnl #
691dnl # 2.6.27 API change,
692dnl # on_each_cpu() uses 3 args, no 'retry' argument
693dnl #
694AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [
695 AC_MSG_CHECKING([whether on_each_cpu() wants 3 args])
696 SPL_LINUX_TRY_COMPILE([
697 #include <linux/smp.h>
698 ],[
699 on_each_cpu(NULL, NULL, 0);
700 ],[
701 AC_MSG_RESULT(yes)
702 AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1,
703 [on_each_cpu wants 3 args])
704 ],[
705 AC_MSG_RESULT(no)
706 ])
707])
36b313da
BB		 708
709dnl #
d1ff2312
BB		 710dnl # 2.6.18 API change,
711dnl # kallsyms_lookup_name no longer exported
712dnl #
713AC_DEFUN([SPL_AC_KALLSYMS_LOOKUP_NAME], [
714 SPL_CHECK_SYMBOL_EXPORT(
715 [kallsyms_lookup_name],
716 [],
717 [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
718 [kallsyms_lookup_name() is available])],
719 [])
720])
721
722dnl #
723dnl # Symbol only available in custom kernels
724dnl #
725AC_DEFUN([SPL_AC_GET_VMALLOC_INFO], [
726 SPL_CHECK_SYMBOL_EXPORT(
727 [get_vmalloc_info],
728 [],
729 [AC_DEFINE(HAVE_GET_VMALLOC_INFO, 1,
730 [get_vmalloc_info() is available])],
731 [])
732])
733
734dnl #
735dnl # Symbol only available in custom kernels
36b313da
BB		 736dnl #
737AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], [
738 SPL_CHECK_SYMBOL_EXPORT(
739 [first_online_pgdat],
740 [],
741 [AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1,
742 [first_online_pgdat() is available])],
743 [])
744])
745
746dnl #
d1ff2312 747dnl # Symbol only available in custom kernels
36b313da
BB		 748dnl #
749AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT], [
750 SPL_CHECK_SYMBOL_EXPORT(
751 [next_online_pgdat],
752 [],
753 [AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1,
754 [next_online_pgdat() is available])],
755 [])
756])
757
758dnl #
d1ff2312 759dnl # Symbol only available in custom kernels
36b313da
BB		 760dnl #
761AC_DEFUN([SPL_AC_NEXT_ZONE], [
762 SPL_CHECK_SYMBOL_EXPORT(
763 [next_zone],
764 [],
765 [AC_DEFINE(HAVE_NEXT_ZONE, 1,
766 [next_zone() is available])],
767 [])
768])
4ab13d3b
BB		 769
770dnl #
d1ff2312 771dnl # Symbol only available in custom kernels
4ab13d3b
BB		 772dnl #
773AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [
774 SPL_CHECK_SYMBOL_EXPORT(
775 [get_zone_counts],
776 [],
777 [AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1,
778 [get_zone_counts() is available])],
779 [])
780])
mirror of SPL module used by << 0.8.x ZFSOnLinux