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$enable_panic_dumplog = xyes ; then
55 AC_DEFINE(LNET_DUMP_ON_PANIC, 1, [use dumplog on panic])
56 AC_MSG_RESULT([yes (by request)])
62 # check kernel __u64 type
63 AC_DEFUN([LIBCFS_U64_LONG_LONG_LINUX],
65 AC_MSG_CHECKING([kernel __u64 is long long type])
66 tmp_flags="$EXTRA_KCFLAGS"
67 EXTRA_KCFLAGS="$EXTRA_KCFLAGS -Werror"
68 LB_LINUX_TRY_COMPILE([
69 #include <linux/types.h>
70 #include <linux/stddef.h>
72 unsigned long long *data;
74 data = (__u64*)sizeof(data);
77 AC_DEFINE(HAVE_KERN__U64_LONG_LONG, 1,
78 [kernel __u64 is long long type])
82 EXTRA_KCFLAGS="$tmp_flags"
85 # LIBCFS_TASKLIST_LOCK
86 # 2.6.18 remove tasklist_lock export
87 AC_DEFUN([LIBCFS_TASKLIST_LOCK],
88 [LB_CHECK_SYMBOL_EXPORT([tasklist_lock],
90 AC_DEFINE(HAVE_TASKLIST_LOCK, 1,
91 [tasklist_lock exported])
97 # kmem_cache_destroy(cachep) return void instead of
99 AC_DEFUN([LIBCFS_KMEM_CACHE_DESTROY_INT],
100 [AC_MSG_CHECKING([kmem_cache_destroy(cachep) return int])
101 LB_LINUX_TRY_COMPILE([
102 #include <linux/slab.h>
104 int i __attribute__ ((unused));
105 i = kmem_cache_destroy(NULL);
108 AC_DEFINE(HAVE_KMEM_CACHE_DESTROY_INT, 1,
109 [kmem_cache_destroy(cachep) return int])
115 # 2.6.20 API change INIT_WORK use 2 args and not
117 AC_DEFUN([LIBCFS_3ARGS_INIT_WORK],
118 [AC_MSG_CHECKING([check INIT_WORK want 3 args])
119 LB_LINUX_TRY_COMPILE([
120 #include <linux/workqueue.h>
122 struct work_struct work __attribute__ ((unused));
124 INIT_WORK(&work, NULL, NULL);
127 AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1,
128 [INIT_WORK use 3 args and store data inside])
134 # 2.6.21 api change. 'register_sysctl_table' use only one argument,
135 # instead of more old which need two.
136 AC_DEFUN([LIBCFS_2ARGS_REGISTER_SYSCTL],
137 [AC_MSG_CHECKING([check register_sysctl_table want 2 args])
138 LB_LINUX_TRY_COMPILE([
139 #include <linux/sysctl.h>
141 register_sysctl_table(NULL,0);
144 AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
145 [register_sysctl_table want 2 args])
151 # 2.6.23 lost dtor argument
152 AC_DEFUN([LIBCFS_KMEM_CACHE_CREATE_DTOR],
153 [AC_MSG_CHECKING([check kmem_cache_create has dtor argument])
154 LB_LINUX_TRY_COMPILE([
155 #include <linux/slab.h>
157 kmem_cache_create(NULL, 0, 0, 0, NULL, NULL);
160 AC_DEFINE(HAVE_KMEM_CACHE_CREATE_DTOR, 1,
161 [kmem_cache_create has dtor argument])
167 #2.6.23 has new shrinker API
168 AC_DEFUN([LC_REGISTER_SHRINKER],
169 [AC_MSG_CHECKING([if kernel has register_shrinker])
170 LB_LINUX_TRY_COMPILE([
171 #include <linux/mm.h>
173 register_shrinker(NULL);
176 AC_DEFINE(HAVE_REGISTER_SHRINKER, 1,
177 [kernel has register_shrinker])
183 # 2.6.24 request not use real numbers for ctl_name
184 AC_DEFUN([LIBCFS_SYSCTL_UNNUMBERED],
185 [AC_MSG_CHECKING([for CTL_UNNUMBERED])
186 LB_LINUX_TRY_COMPILE([
187 #include <linux/sysctl.h>
189 #ifndef CTL_UNNUMBERED
190 #error CTL_UNNUMBERED not exist in kernel
194 AC_DEFINE(HAVE_SYSCTL_UNNUMBERED, 1,
195 [sysctl has CTL_UNNUMBERED])
201 # 2.6.24 lost scatterlist->page
202 AC_DEFUN([LIBCFS_SCATTERLIST_SETPAGE],
203 [AC_MSG_CHECKING([for exist sg_set_page])
204 LB_LINUX_TRY_COMPILE([
205 #include <asm/types.h>
206 #include <linux/scatterlist.h>
208 sg_set_page(NULL,NULL,0,0);
211 AC_DEFINE(HAVE_SCATTERLIST_SETPAGE, 1,
212 [struct scatterlist has page member])
219 AC_DEFUN([LIBCFS_NETWORK_NAMESPACE],
220 [AC_MSG_CHECKING([for network stack has namespaces])
221 LB_LINUX_TRY_COMPILE([
222 #include <net/net_namespace.h>
224 struct net *net __attribute__ ((unused));
228 AC_DEFINE(HAVE_INIT_NET, 1,
229 [kernel is support network namespaces ])
236 # LIBCFS_FUNC_DUMP_TRACE
238 # 2.6.23 exports dump_trace() so we can dump_stack() on any task
239 # 2.6.24 has stacktrace_ops.address with "reliable" parameter
241 AC_DEFUN([LIBCFS_FUNC_DUMP_TRACE],
242 [LB_CHECK_SYMBOL_EXPORT([dump_trace],
243 [kernel/ksyms.c arch/${LINUX_ARCH%_64}/kernel/traps_64.c arch/x86/kernel/dumpstack_32.c arch/x86/kernel/dumpstack_64.c],[
244 tmp_flags="$EXTRA_KCFLAGS"
245 EXTRA_KCFLAGS="-Werror"
246 AC_MSG_CHECKING([whether we can really use dump_trace])
247 LB_LINUX_TRY_COMPILE([
250 #include <asm/stacktrace.h>
254 AC_DEFINE(HAVE_DUMP_TRACE, 1, [dump_trace is exported])
259 AC_MSG_CHECKING([whether print_trace_address has reliable argument])
260 LB_LINUX_TRY_COMPILE([
263 #include <asm/stacktrace.h>
265 ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
268 AC_DEFINE(HAVE_TRACE_ADDRESS_RELIABLE, 1,
269 [print_trace_address has reliable argument])
274 AC_MSG_CHECKING([whether stacktrace_ops.warning is exist])
275 LB_LINUX_TRY_COMPILE([
278 #include <asm/stacktrace.h>
280 ((struct stacktrace_ops *)0)->warning(NULL, NULL);
283 AC_DEFINE(HAVE_STACKTRACE_WARNING, 1, [stacktrace_ops.warning is exist])
288 AC_MSG_CHECKING([dump_trace want address])
289 LB_LINUX_TRY_COMPILE([
292 #include <asm/stacktrace.h>
294 dump_trace(NULL, NULL, NULL, 0, NULL, NULL);
297 AC_DEFINE(HAVE_DUMP_TRACE_ADDRESS, 1,
298 [dump_trace want address argument])
304 EXTRA_KCFLAGS="$tmp_flags"
309 # 2.6.26 use int instead of atomic for sem.count
310 AC_DEFUN([LIBCFS_SEM_COUNT],
311 [AC_MSG_CHECKING([atomic sem.count])
312 LB_LINUX_TRY_COMPILE([
313 #include <asm/semaphore.h>
315 struct semaphore s __attribute__ ((unused));
317 atomic_read(&s.count);
320 AC_DEFINE(HAVE_SEM_COUNT_ATOMIC, 1,
321 [semaphore counter is atomic])
327 # 2.6.27 have second argument to sock_map_fd
328 AC_DEFUN([LIBCFS_SOCK_MAP_FD_2ARG],
329 [AC_MSG_CHECKING([sock_map_fd have second argument])
330 LB_LINUX_TRY_COMPILE([
331 #include <linux/net.h>
333 sock_map_fd(NULL, 0);
336 AC_DEFINE(HAVE_SOCK_MAP_FD_2ARG, 1,
337 [sock_map_fd have second argument])
343 # LIBCFS_CRED_WRAPPERS
345 # wrappers for task's credentials are in sles11
347 AC_DEFUN([LIBCFS_CRED_WRAPPERS],
348 [AC_MSG_CHECKING([if kernel has wrappers for task's credentials])
349 LB_LINUX_TRY_COMPILE([
350 #include <linux/sched.h>
354 uid = current_uid() + sizeof(uid);
357 AC_DEFINE(HAVE_CRED_WRAPPERS, 1, [task's cred wrappers found])
364 # LN_STRUCT_CRED_IN_TASK
366 # struct cred was introduced in 2.6.29 to streamline credentials in task struct
368 AC_DEFUN([LIBCFS_STRUCT_CRED_IN_TASK],
369 [AC_MSG_CHECKING([if kernel has struct cred])
370 LB_LINUX_TRY_COMPILE([
371 #include <linux/sched.h>
373 struct task_struct *tsk = NULL;
374 tsk->real_cred = NULL;
377 AC_DEFINE(HAVE_STRUCT_CRED, 1, [struct cred found])
384 # LIBCFS_FUNC_UNSHARE_FS_STRUCT
386 # unshare_fs_struct was introduced in 2.6.30 to prevent others to directly
387 # mess with copy_fs_struct
389 AC_DEFUN([LIBCFS_FUNC_UNSHARE_FS_STRUCT],
390 [AC_MSG_CHECKING([if kernel defines unshare_fs_struct()])
391 tmp_flags="$EXTRA_KCFLAGS"
392 EXTRA_KCFLAGS="-Werror"
393 LB_LINUX_TRY_COMPILE([
394 #include <linux/sched.h>
395 #include <linux/fs_struct.h>
400 AC_DEFINE(HAVE_UNSHARE_FS_STRUCT, 1, [unshare_fs_struct found])
404 EXTRA_KCFLAGS="$tmp_flags"
408 # LIBCFS_HAVE_IS_COMPAT_TASK
410 # Added in 2.6.17, it wasn't until 2.6.29 that all
411 # Linux architectures have is_compat_task()
413 AC_DEFUN([LIBCFS_HAVE_IS_COMPAT_TASK],
414 [AC_MSG_CHECKING([if is_compat_task() is declared])
415 LB_LINUX_TRY_COMPILE([
416 #include <linux/compat.h>
418 int i __attribute__ ((unused));
419 i = is_compat_task();
422 AC_DEFINE(HAVE_IS_COMPAT_TASK, 1, [is_compat_task() is available])
429 # LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
431 # 2.6.32-30.el6 adds a new 'walk_stack' field in 'struct stacktrace_ops'
433 AC_DEFUN([LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK],
434 [AC_MSG_CHECKING([if 'struct stacktrace_ops' has 'walk_stack' field])
435 LB_LINUX_TRY_COMPILE([
436 #include <asm/stacktrace.h>
438 ((struct stacktrace_ops *)0)->walk_stack(NULL, NULL, 0, NULL, NULL, NULL, NULL);
441 AC_DEFINE(STACKTRACE_OPS_HAVE_WALK_STACK, 1, ['struct stacktrace_ops' has 'walk_stack' field])
447 AC_DEFUN([LIBCFS_HAVE_OOM_H],
448 [LB_CHECK_FILE([$LINUX/include/linux/oom.h], [
449 AC_DEFINE(HAVE_LINUX_OOM_H, 1,
450 [kernel has include/oom.h])
457 # RHEL6/2.6.32 want to have pointer to shrinker self pointer in handler function
459 AC_DEFUN([LC_SHRINKER_WANT_SHRINK_PTR],
460 [AC_MSG_CHECKING([shrinker want self pointer in handler])
461 LB_LINUX_TRY_COMPILE([
462 #include <linux/mm.h>
464 struct shrinker *tmp = NULL;
465 tmp->shrink(tmp, 0, 0);
468 AC_DEFINE(HAVE_SHRINKER_WANT_SHRINK_PTR, 1,
469 [shrinker want self pointer in handler])
475 # 2.6.18 store oom parameters in task struct.
476 # 2.6.32 store oom parameters in signal struct
477 AC_DEFUN([LIBCFS_OOMADJ_IN_SIG],
478 [AC_MSG_CHECKING([kernel store oom parameters in task])
479 LB_LINUX_TRY_COMPILE([
480 #include <linux/sched.h>
482 ((struct signal_struct *)0)->oom_adj = 0;
485 AC_DEFINE(HAVE_OOMADJ_IN_SIG, 1,
486 [kernel store a oom parameters in signal struct])
493 # 2.6.33 no longer has ctl_name & strategy field in struct ctl_table.
495 AC_DEFUN([LIBCFS_SYSCTL_CTLNAME],
496 [AC_MSG_CHECKING([if ctl_table has a ctl_name field])
497 LB_LINUX_TRY_COMPILE([
498 #include <linux/sysctl.h>
501 ct.ctl_name = sizeof(ct);
504 AC_DEFINE(HAVE_SYSCTL_CTLNAME, 1,
505 [ctl_table has ctl_name field])
512 # LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE
514 # 2.6.34 adds __add_wait_queue_exclusive
516 AC_DEFUN([LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE],
517 [AC_MSG_CHECKING([if __add_wait_queue_exclusive exists])
518 LB_LINUX_TRY_COMPILE([
519 #include <linux/wait.h>
521 wait_queue_head_t queue;
524 __add_wait_queue_exclusive(&queue, &wait);
527 AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
528 [__add_wait_queue_exclusive exists])
535 # 2.6.35 kernel has sk_sleep function
537 AC_DEFUN([LC_SK_SLEEP],
538 [AC_MSG_CHECKING([if kernel has sk_sleep])
539 LB_LINUX_TRY_COMPILE([
540 #include <net/sock.h>
545 AC_DEFINE(HAVE_SK_SLEEP, 1, [kernel has sk_sleep])
552 # FC15 2.6.40-5 backported the "shrink_control" parameter to the memory
553 # pressure shrinker from Linux 3.0
555 AC_DEFUN([LC_SHRINK_CONTROL],
556 [AC_MSG_CHECKING([shrink_control is present])
557 LB_LINUX_TRY_COMPILE([
558 #include <linux/mm.h>
560 struct shrink_control tmp = {0};
561 tmp.nr_to_scan = sizeof(tmp);
564 AC_DEFINE(HAVE_SHRINK_CONTROL, 1,
565 [shrink_control is present])
574 # LNet linux kernel checks
576 AC_DEFUN([LIBCFS_PROG_LINUX],
578 LIBCFS_CONFIG_PANIC_DUMPLOG
580 LIBCFS_U64_LONG_LONG_LINUX
584 LIBCFS_HAVE_IS_COMPAT_TASK
586 LIBCFS_KMEM_CACHE_DESTROY_INT
588 LIBCFS_3ARGS_INIT_WORK
590 LIBCFS_2ARGS_REGISTER_SYSCTL
592 LIBCFS_KMEM_CACHE_CREATE_DTOR
595 LIBCFS_SYSCTL_UNNUMBERED
596 LIBCFS_SCATTERLIST_SETPAGE
597 LIBCFS_NETWORK_NAMESPACE
598 LIBCFS_FUNC_DUMP_TRACE
604 LIBCFS_STRUCT_CRED_IN_TASK
606 LIBCFS_FUNC_UNSHARE_FS_STRUCT
607 LIBCFS_SOCK_MAP_FD_2ARG
609 LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
610 LC_SHRINKER_WANT_SHRINK_PTR
614 LIBCFS_SYSCTL_CTLNAME
616 LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE
628 AC_DEFUN([LIBCFS_PROG_DARWIN],
629 [LB_DARWIN_CHECK_FUNCS([get_preemption_level])
633 # LIBCFS_PATH_DEFAULTS
635 # default paths for installed files
637 AC_DEFUN([LIBCFS_PATH_DEFAULTS],
644 # other configure checks
646 AC_DEFUN([LIBCFS_CONFIGURE],
647 [# lnet/utils/portals.c
648 AC_CHECK_HEADERS([asm/types.h endian.h sys/ioctl.h])
651 AC_CHECK_HEADERS([linux/version.h])
653 AC_CHECK_TYPE([spinlock_t],
654 [AC_DEFINE(HAVE_SPINLOCK_T, 1, [spinlock_t is defined])],
656 [#include <linux/spinlock.h>])
658 # lnet/utils/wirecheck.c
659 AC_CHECK_FUNCS([strnlen])
661 AC_CHECK_TYPE([umode_t],
662 [AC_DEFINE(HAVE_UMODE_T, 1, [umode_t is defined])],
664 [#include <asm/types.h>])
666 AC_CHECK_TYPE([__s8],
667 [AC_DEFINE(HAVE___S8, 1, [__s8 is defined])],
669 [#include <asm/types.h>])
671 AC_CHECK_TYPE([__u8],
672 [AC_DEFINE(HAVE___U8, 1, [__u8 is defined])],
674 [#include <asm/types.h>])
676 AC_CHECK_TYPE([__s16],
677 [AC_DEFINE(HAVE___S16, 1, [__s16 is defined])],
679 [#include <asm/types.h>])
681 AC_CHECK_TYPE([__u16],
682 [AC_DEFINE(HAVE___U16, 1, [__u16 is defined])],
684 [#include <asm/types.h>])
686 AC_CHECK_TYPE([__s32],
687 [AC_DEFINE(HAVE___S32, 1, [__s32 is defined])],
689 [#include <asm/types.h>])
691 AC_CHECK_TYPE([__u32],
692 [AC_DEFINE(HAVE___U32, 1, [__u32 is defined])],
694 [#include <asm/types.h>])
696 AC_CHECK_TYPE([__u64],
697 [AC_DEFINE(HAVE___U64, 1, [__u64 is defined])],
699 [#include <asm/types.h>])
701 AC_CHECK_TYPE([__s64],
702 [AC_DEFINE(HAVE___S64, 1, [__s64 is defined])],
704 [#include <asm/types.h>])
706 # check userland __u64 type
707 AC_MSG_CHECKING([userspace __u64 is long long type])
709 CFLAGS="$CFLAGS -Werror"
712 #include <linux/types.h>
713 #include <linux/stddef.h>
715 unsigned long long *data1;
723 AC_DEFINE(HAVE_USER__U64_LONG_LONG, 1,
724 [__u64 is long long type])
730 # -------- Check for required packages --------------
733 AC_MSG_CHECKING([if efence debugging support is requested])
734 AC_ARG_ENABLE(efence,
735 AC_HELP_STRING([--enable-efence],
736 [use efence library]),
737 [],[enable_efence='no'])
738 AC_MSG_RESULT([$enable_efence])
739 if test "$enable_efence" = "yes" ; then
741 AC_DEFINE(HAVE_LIBEFENCE, 1, [libefence support is requested])
748 # -------- check for -lpthread support ----
749 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
750 AC_ARG_ENABLE([libpthread],
751 AC_HELP_STRING([--disable-libpthread],
752 [disable libpthread]),
753 [],[enable_libpthread=yes])
754 if test "$enable_libpthread" = "yes" ; then
755 AC_CHECK_LIB([pthread], [pthread_create],
756 [ENABLE_LIBPTHREAD="yes"],
757 [ENABLE_LIBPTHREAD="no"])
758 if test "$ENABLE_LIBPTHREAD" = "yes" ; then
759 AC_MSG_RESULT([$ENABLE_LIBPTHREAD])
760 PTHREAD_LIBS="-lpthread"
761 AC_DEFINE([HAVE_LIBPTHREAD], 1, [use libpthread])
764 AC_MSG_RESULT([no libpthread is found])
766 AC_SUBST(PTHREAD_LIBS)
768 AC_MSG_RESULT([no (disabled explicitly)])
769 ENABLE_LIBPTHREAD="no"
771 AC_SUBST(ENABLE_LIBPTHREAD)
777 # LIBCFS_CONDITIONALS
779 # AM_CONDITOINAL defines for lnet
781 AC_DEFUN([LIBCFS_CONDITIONALS],
786 # LIBCFS_CONFIG_FILES
788 # files that should be generated with AC_OUTPUT
790 AC_DEFUN([LIBCFS_CONFIG_FILES],
795 libcfs/autoconf/Makefile
796 libcfs/include/Makefile
797 libcfs/include/libcfs/Makefile
798 libcfs/include/libcfs/linux/Makefile
799 libcfs/include/libcfs/posix/Makefile
800 libcfs/include/libcfs/util/Makefile
801 libcfs/libcfs/Makefile
802 libcfs/libcfs/autoMakefile
803 libcfs/libcfs/linux/Makefile
804 libcfs/libcfs/posix/Makefile
805 libcfs/libcfs/util/Makefile
806 libcfs/include/libcfs/darwin/Makefile
807 libcfs/libcfs/darwin/Makefile