4 # whether to enable various libcfs debugs (CDEBUG, ENTRY/EXIT, LASSERT, etc.)
6 AC_DEFUN([LN_CONFIG_CDEBUG],
8 AC_MSG_CHECKING([whether to enable CDEBUG, CWARN])
9 AC_ARG_ENABLE([libcfs_cdebug],
10 AC_HELP_STRING([--disable-libcfs-cdebug],
11 [disable libcfs CDEBUG, CWARN]),
12 [],[enable_libcfs_cdebug='yes'])
13 AC_MSG_RESULT([$enable_libcfs_cdebug])
14 if test x$enable_libcfs_cdebug = xyes; then
15 AC_DEFINE(CDEBUG_ENABLED, 1, [enable libcfs CDEBUG, CWARN])
17 AC_DEFINE(CDEBUG_ENABLED, 0, [disable libcfs CDEBUG, CWARN])
20 AC_MSG_CHECKING([whether to enable ENTRY/EXIT])
21 AC_ARG_ENABLE([libcfs_trace],
22 AC_HELP_STRING([--disable-libcfs-trace],
23 [disable libcfs ENTRY/EXIT]),
24 [],[enable_libcfs_trace='yes'])
25 AC_MSG_RESULT([$enable_libcfs_trace])
26 if test x$enable_libcfs_trace = xyes; then
27 AC_DEFINE(CDEBUG_ENTRY_EXIT, 1, [enable libcfs ENTRY/EXIT])
29 AC_DEFINE(CDEBUG_ENTRY_EXIT, 0, [disable libcfs ENTRY/EXIT])
32 AC_MSG_CHECKING([whether to enable LASSERT, LASSERTF])
33 AC_ARG_ENABLE([libcfs_assert],
34 AC_HELP_STRING([--disable-libcfs-assert],
35 [disable libcfs LASSERT, LASSERTF]),
36 [],[enable_libcfs_assert='yes'])
37 AC_MSG_RESULT([$enable_libcfs_assert])
38 if test x$enable_libcfs_assert = xyes; then
39 AC_DEFINE(LIBCFS_DEBUG, 1, [enable libcfs LASSERT, LASSERTF])
44 # LIBCFS_CONFIG_PANIC_DUMPLOG
46 # check if tunable panic_dumplog is wanted
48 AC_DEFUN([LIBCFS_CONFIG_PANIC_DUMPLOG],
49 [AC_MSG_CHECKING([for tunable panic_dumplog support])
50 AC_ARG_ENABLE([panic_dumplog],
51 AC_HELP_STRING([--enable-panic_dumplog],
52 [enable panic_dumplog]),
53 [],[enable_panic_dumplog='no'])
54 if test x$enable_panic_dumplog = xyes ; then
55 AC_DEFINE(LNET_DUMP_ON_PANIC, 1, [use dumplog on panic])
56 AC_MSG_RESULT([yes (by request)])
63 # LIBCFS_STRUCT_PAGE_LIST
65 # 2.6.4 no longer has page->list
67 AC_DEFUN([LIBCFS_STRUCT_PAGE_LIST],
68 [AC_MSG_CHECKING([if struct page has a list field])
69 LB_LINUX_TRY_COMPILE([
76 AC_DEFINE(HAVE_PAGE_LIST, 1, [struct page has a list field])
83 # LIBCFS_STRUCT_SIGHAND
85 # red hat 2.4 adds sighand to struct task_struct
87 AC_DEFUN([LIBCFS_STRUCT_SIGHAND],
88 [AC_MSG_CHECKING([if task_struct has a sighand field])
89 LB_LINUX_TRY_COMPILE([
90 #include <linux/sched.h>
95 AC_DEFINE(CONFIG_RH_2_4_20, 1, [this kernel contains Red Hat 2.4.20 patches])
103 # LIBCFS_FUNC_CPU_ONLINE
105 # cpu_online is different in rh 2.4, vanilla 2.4, and 2.6
107 AC_DEFUN([LIBCFS_FUNC_CPU_ONLINE],
108 [AC_MSG_CHECKING([if kernel defines cpu_online()])
109 LB_LINUX_TRY_COMPILE([
110 #include <linux/sched.h>
115 AC_DEFINE(HAVE_CPU_ONLINE, 1, [cpu_online found])
124 # check if gfp_t is typedef-ed
126 AC_DEFUN([LIBCFS_TYPE_GFP_T],
127 [AC_MSG_CHECKING([if kernel defines gfp_t])
128 LB_LINUX_TRY_COMPILE([
129 #include <linux/gfp.h>
131 return sizeof(gfp_t);
134 AC_DEFINE(HAVE_GFP_T, 1, [gfp_t found])
141 # LIBCFS_TYPE_CPUMASK_T
143 # same goes for cpumask_t
145 AC_DEFUN([LIBCFS_TYPE_CPUMASK_T],
146 [AC_MSG_CHECKING([if kernel defines cpumask_t])
147 LB_LINUX_TRY_COMPILE([
148 #include <linux/sched.h>
150 return sizeof (cpumask_t);
153 AC_DEFINE(HAVE_CPUMASK_T, 1, [cpumask_t found])
160 # LIBCFS_FUNC_SHOW_TASK
162 # we export show_task(), but not all kernels have it (yet)
164 AC_DEFUN([LIBCFS_FUNC_SHOW_TASK],
165 [LB_CHECK_SYMBOL_EXPORT([show_task],
166 [kernel/ksyms.c kernel/sched.c],[
167 AC_DEFINE(HAVE_SHOW_TASK, 1, [show_task is exported])
172 # check userland __u64 type
173 AC_DEFUN([LIBCFS_U64_LONG_LONG],
174 [AC_MSG_CHECKING([u64 is long long type])
176 CFLAGS="$CFLAGS -Werror"
178 #include <linux/types.h>
180 unsigned long long *data1;
188 AC_DEFINE(HAVE_U64_LONG_LONG, 1,
189 [__u64 is long long type])
196 # check userland size_t type
197 AC_DEFUN([LIBCFS_SIZE_T_LONG],
198 [AC_MSG_CHECKING([size_t is unsigned long type])
200 CFLAGS="$CFLAGS -Werror"
202 #include <linux/types.h>
204 unsigned long *data1;
212 AC_DEFINE(HAVE_SIZE_T_LONG, 1,
213 [size_t is long type])
220 AC_DEFUN([LIBCFS_SSIZE_T_LONG],
221 [AC_MSG_CHECKING([ssize_t is signed long type])
223 CFLAGS="$CFLAGS -Werror"
225 #include <linux/types.h>
235 AC_DEFINE(HAVE_SSIZE_T_LONG, 1,
236 [ssize_t is long type])
244 # check if task_struct with rcu memeber
245 AC_DEFUN([LIBCFS_TASK_RCU],
246 [AC_MSG_CHECKING([if task_struct has a rcu field])
247 LB_LINUX_TRY_COMPILE([
248 #include <linux/sched.h>
250 struct task_struct tsk;
255 AC_DEFINE(HAVE_TASK_RCU, 1,
256 [task_struct has rcu field])
262 # LIBCFS_TASKLIST_LOCK
263 # 2.6.18 remove tasklist_lock export
264 AC_DEFUN([LIBCFS_TASKLIST_LOCK],
265 [LB_CHECK_SYMBOL_EXPORT([tasklist_lock],
267 AC_DEFINE(HAVE_TASKLIST_LOCK, 1,
268 [tasklist_lock exported])
274 # kmem_cache_destroy(cachep) return void instead of
276 AC_DEFUN([LIBCFS_KMEM_CACHE_DESTROY_INT],
277 [AC_MSG_CHECKING([kmem_cache_destroy(cachep) return int])
278 LB_LINUX_TRY_COMPILE([
279 #include <linux/slab.h>
281 int i = kmem_cache_destroy(NULL);
284 AC_DEFINE(HAVE_KMEM_CACHE_DESTROY_INT, 1,
285 [kmem_cache_destroy(cachep) return int])
292 #panic_notifier_list use atomic_notifier operations
294 AC_DEFUN([LIBCFS_ATOMIC_PANIC_NOTIFIER],
295 [AC_MSG_CHECKING([panic_notifier_list is atomic])
296 LB_LINUX_TRY_COMPILE([
297 #include <linux/notifier.h>
298 #include <linux/kernel.h>
300 struct atomic_notifier_head panic_notifier_list;
303 AC_DEFINE(HAVE_ATOMIC_PANIC_NOTIFIER, 1,
304 [panic_notifier_list is atomic_notifier_head])
310 # 2.6.20 API change INIT_WORK use 2 args and not
312 AC_DEFUN([LIBCFS_3ARGS_INIT_WORK],
313 [AC_MSG_CHECKING([check INIT_WORK want 3 args])
314 LB_LINUX_TRY_COMPILE([
315 #include <linux/workqueue.h>
317 struct work_struct work;
319 INIT_WORK(&work, NULL, NULL);
322 AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1,
323 [INIT_WORK use 3 args and store data inside])
329 # 2.6.21 api change. 'register_sysctl_table' use only one argument,
330 # instead of more old which need two.
331 AC_DEFUN([LIBCFS_2ARGS_REGISTER_SYSCTL],
332 [AC_MSG_CHECKING([check register_sysctl_table want 2 args])
333 LB_LINUX_TRY_COMPILE([
334 #include <linux/sysctl.h>
336 return register_sysctl_table(NULL,0);
339 AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
340 [register_sysctl_table want 2 args])
346 # 2.6.21 marks kmem_cache_t deprecated and uses struct kmem_cache
348 AC_DEFUN([LIBCFS_KMEM_CACHE],
349 [AC_MSG_CHECKING([check kernel has struct kmem_cache])
350 tmp_flags="$EXTRA_KCFLAGS"
351 EXTRA_KCFLAGS="-Werror"
352 LB_LINUX_TRY_COMPILE([
353 #include <linux/slab.h>
354 typedef struct kmem_cache cache_t;
356 cache_t *cachep = NULL;
358 kmem_cache_alloc(cachep, 0);
361 AC_DEFINE(HAVE_KMEM_CACHE, 1,
362 [kernel has struct kmem_cache])
366 EXTRA_KCFLAGS="$tmp_flags"
368 # 2.6.23 lost dtor argument
369 AC_DEFUN([LIBCFS_KMEM_CACHE_CREATE_DTOR],
370 [AC_MSG_CHECKING([check kmem_cache_create has dtor argument])
371 LB_LINUX_TRY_COMPILE([
372 #include <linux/slab.h>
374 kmem_cache_create(NULL, 0, 0, 0, NULL, NULL);
377 AC_DEFINE(HAVE_KMEM_CACHE_CREATE_DTOR, 1,
378 [kmem_cache_create has dtor argument])
384 # 2.6.24 request not use real numbers for ctl_name
385 AC_DEFUN([LN_SYSCTL_UNNUMBERED],
386 [AC_MSG_CHECKING([for CTL_UNNUMBERED])
387 LB_LINUX_TRY_COMPILE([
388 #include <linux/sysctl.h>
390 #ifndef CTL_UNNUMBERED
391 #error CTL_UNNUMBERED not exist in kernel
395 AC_DEFINE(HAVE_SYSCTL_UNNUMBERED, 1,
396 [sysctl has CTL_UNNUMBERED])
402 # 2.6.24 lost scatterlist->page
403 AC_DEFUN([LN_SCATTERLIST_SETPAGE],
404 [AC_MSG_CHECKING([for exist sg_set_page])
405 LB_LINUX_TRY_COMPILE([
406 #include <linux/scatterlist.h>
408 sg_set_page(NULL,NULL,0,0);
411 AC_DEFINE(HAVE_SCATTERLIST_SETPAGE, 1,
412 [struct scatterlist has page member])
418 # 2.6.26 use int instead of atomic for sem.count
419 AC_DEFUN([LN_SEM_COUNT],
420 [AC_MSG_CHECKING([atomic sem.count])
421 LB_LINUX_TRY_COMPILE([
422 #include <asm/semaphore.h>
426 atomic_read(&s.count);
429 AC_DEFINE(HAVE_SEM_COUNT_ATOMIC, 1,
430 [semaphore counter is atomic])
439 # LNet linux kernel checks
441 AC_DEFUN([LIBCFS_PROG_LINUX],
443 LIBCFS_FUNC_CPU_ONLINE
445 LIBCFS_TYPE_CPUMASK_T
446 LIBCFS_CONFIG_PANIC_DUMPLOG
448 LIBCFS_STRUCT_PAGE_LIST
449 LIBCFS_STRUCT_SIGHAND
450 LIBCFS_FUNC_SHOW_TASK
458 LIBCFS_KMEM_CACHE_DESTROY_INT
459 LIBCFS_ATOMIC_PANIC_NOTIFIER
461 LIBCFS_3ARGS_INIT_WORK
463 LIBCFS_2ARGS_REGISTER_SYSCTL
466 LIBCFS_KMEM_CACHE_CREATE_DTOR
469 LN_SCATTERLIST_SETPAGE
479 AC_DEFUN([LIBCFS_PROG_DARWIN],
480 [LB_DARWIN_CHECK_FUNCS([get_preemption_level])
484 # LIBCFS_PATH_DEFAULTS
486 # default paths for installed files
488 AC_DEFUN([LIBCFS_PATH_DEFAULTS],
495 # other configure checks
497 AC_DEFUN([LIBCFS_CONFIGURE],
498 [# lnet/utils/portals.c
499 AC_CHECK_HEADERS([asm/types.h endian.h sys/ioctl.h])
502 AC_CHECK_HEADERS([linux/version.h])
504 AC_CHECK_TYPE([spinlock_t],
505 [AC_DEFINE(HAVE_SPINLOCK_T, 1, [spinlock_t is defined])],
507 [#include <linux/spinlock.h>])
509 # lnet/utils/wirecheck.c
510 AC_CHECK_FUNCS([strnlen])
512 AC_CHECK_TYPE([umode_t],
513 [AC_DEFINE(HAVE_UMODE_T, 1, [umode_t is defined])],
515 [#include <signal.h>])
517 AC_CHECK_TYPE([__u64],
518 [AC_DEFINE(HAVE___U64, 1, [__u64 is defined])],
520 [#include <signal.h>])
522 AC_CHECK_TYPE([__s64],
523 [AC_DEFINE(HAVE___S64, 1, [__s64 is defined])],
525 [#include <signal.h>])
527 # -------- Check for required packages --------------
530 AC_MSG_CHECKING([if efence debugging support is requested])
531 AC_ARG_ENABLE(efence,
532 AC_HELP_STRING([--enable-efence],
533 [use efence library]),
534 [],[enable_efence='no'])
535 AC_MSG_RESULT([$enable_efence])
536 if test "$enable_efence" = "yes" ; then
538 AC_DEFINE(HAVE_LIBEFENCE, 1, [libefence support is requested])
545 # -------- check for -lpthread support ----
546 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
547 AC_ARG_ENABLE([libpthread],
548 AC_HELP_STRING([--disable-libpthread],
549 [disable libpthread]),
550 [],[enable_libpthread=yes])
551 if test "$enable_libpthread" = "yes" ; then
552 AC_CHECK_LIB([pthread], [pthread_create],
553 [ENABLE_LIBPTHREAD="yes"],
554 [ENABLE_LIBPTHREAD="no"])
555 if test "$ENABLE_LIBPTHREAD" = "yes" ; then
556 AC_MSG_RESULT([$ENABLE_LIBPTHREAD])
557 PTHREAD_LIBS="-lpthread"
558 AC_DEFINE([HAVE_LIBPTHREAD], 1, [use libpthread])
561 AC_MSG_RESULT([no libpthread is found])
563 AC_SUBST(PTHREAD_LIBS)
565 AC_MSG_RESULT([no (disabled explicitly)])
566 ENABLE_LIBPTHREAD="no"
568 AC_SUBST(ENABLE_LIBPTHREAD)
574 # LIBCFS_CONDITIONALS
576 # AM_CONDITOINAL defines for lnet
578 AC_DEFUN([LIBCFS_CONDITIONALS],
583 # LIBCFS_CONFIG_FILES
585 # files that should be generated with AC_OUTPUT
587 AC_DEFUN([LIBCFS_CONFIG_FILES],
592 libcfs/autoconf/Makefile
593 libcfs/include/Makefile
594 libcfs/include/libcfs/Makefile
595 libcfs/include/libcfs/linux/Makefile
596 libcfs/include/libcfs/posix/Makefile
597 libcfs/include/libcfs/util/Makefile
598 libcfs/libcfs/Makefile
599 libcfs/libcfs/autoMakefile
600 libcfs/libcfs/linux/Makefile
601 libcfs/libcfs/posix/Makefile
602 libcfs/libcfs/util/Makefile
604 case $lb_target_os in
607 libcfs/include/libcfs/darwin/Makefile
608 libcfs/libcfs/darwin/Makefile