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 = kmem_cache_destroy(NULL);
107 AC_DEFINE(HAVE_KMEM_CACHE_DESTROY_INT, 1,
108 [kmem_cache_destroy(cachep) return int])
114 # 2.6.20 API change INIT_WORK use 2 args and not
116 AC_DEFUN([LIBCFS_3ARGS_INIT_WORK],
117 [AC_MSG_CHECKING([check INIT_WORK want 3 args])
118 LB_LINUX_TRY_COMPILE([
119 #include <linux/workqueue.h>
121 struct work_struct work;
123 INIT_WORK(&work, NULL, NULL);
126 AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1,
127 [INIT_WORK use 3 args and store data inside])
133 # 2.6.21 api change. 'register_sysctl_table' use only one argument,
134 # instead of more old which need two.
135 AC_DEFUN([LIBCFS_2ARGS_REGISTER_SYSCTL],
136 [AC_MSG_CHECKING([check register_sysctl_table want 2 args])
137 LB_LINUX_TRY_COMPILE([
138 #include <linux/sysctl.h>
140 return register_sysctl_table(NULL,0);
143 AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
144 [register_sysctl_table want 2 args])
150 # 2.6.23 lost dtor argument
151 AC_DEFUN([LIBCFS_KMEM_CACHE_CREATE_DTOR],
152 [AC_MSG_CHECKING([check kmem_cache_create has dtor argument])
153 LB_LINUX_TRY_COMPILE([
154 #include <linux/slab.h>
156 kmem_cache_create(NULL, 0, 0, 0, NULL, NULL);
159 AC_DEFINE(HAVE_KMEM_CACHE_CREATE_DTOR, 1,
160 [kmem_cache_create has dtor argument])
166 #2.6.23 has new shrinker API
167 AC_DEFUN([LC_REGISTER_SHRINKER],
168 [AC_MSG_CHECKING([if kernel has register_shrinker])
169 LB_LINUX_TRY_COMPILE([
170 #include <linux/mm.h>
172 register_shrinker(NULL);
175 AC_DEFINE(HAVE_REGISTER_SHRINKER, 1,
176 [kernel has register_shrinker])
182 # 2.6.24 request not use real numbers for ctl_name
183 AC_DEFUN([LIBCFS_SYSCTL_UNNUMBERED],
184 [AC_MSG_CHECKING([for CTL_UNNUMBERED])
185 LB_LINUX_TRY_COMPILE([
186 #include <linux/sysctl.h>
188 #ifndef CTL_UNNUMBERED
189 #error CTL_UNNUMBERED not exist in kernel
193 AC_DEFINE(HAVE_SYSCTL_UNNUMBERED, 1,
194 [sysctl has CTL_UNNUMBERED])
200 # 2.6.24 lost scatterlist->page
201 AC_DEFUN([LIBCFS_SCATTERLIST_SETPAGE],
202 [AC_MSG_CHECKING([for exist sg_set_page])
203 LB_LINUX_TRY_COMPILE([
204 #include <asm/types.h>
205 #include <linux/scatterlist.h>
207 sg_set_page(NULL,NULL,0,0);
210 AC_DEFINE(HAVE_SCATTERLIST_SETPAGE, 1,
211 [struct scatterlist has page member])
218 AC_DEFUN([LIBCFS_NETWORK_NAMESPACE],
219 [AC_MSG_CHECKING([for network stack has namespaces])
220 LB_LINUX_TRY_COMPILE([
221 #include <net/net_namespace.h>
223 struct net *net = &init_net;
226 AC_DEFINE(HAVE_INIT_NET, 1,
227 [kernel is support network namespaces ])
234 # LIBCFS_FUNC_DUMP_TRACE
236 # 2.6.23 exports dump_trace() so we can dump_stack() on any task
237 # 2.6.24 has stacktrace_ops.address with "reliable" parameter
239 AC_DEFUN([LIBCFS_FUNC_DUMP_TRACE],
240 [LB_CHECK_SYMBOL_EXPORT([dump_trace],
241 [kernel/ksyms.c arch/${LINUX_ARCH%_64}/kernel/traps_64.c arch/x86/kernel/dumpstack_32.c arch/x86/kernel/dumpstack_64.c],[
242 tmp_flags="$EXTRA_KCFLAGS"
243 EXTRA_KCFLAGS="-Werror"
244 AC_MSG_CHECKING([whether we can really use dump_trace])
245 LB_LINUX_TRY_COMPILE([
248 #include <asm/stacktrace.h>
252 AC_DEFINE(HAVE_DUMP_TRACE, 1, [dump_trace is exported])
257 AC_MSG_CHECKING([whether print_trace_address has reliable argument])
258 LB_LINUX_TRY_COMPILE([
261 #include <asm/stacktrace.h>
263 ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
266 AC_DEFINE(HAVE_TRACE_ADDRESS_RELIABLE, 1,
267 [print_trace_address has reliable argument])
272 AC_MSG_CHECKING([whether stacktrace_ops.warning is exist])
273 LB_LINUX_TRY_COMPILE([
276 #include <asm/stacktrace.h>
278 ((struct stacktrace_ops *)0)->warning(NULL, NULL);
281 AC_DEFINE(HAVE_STACKTRACE_WARNING, 1, [stacktrace_ops.warning is exist])
286 AC_MSG_CHECKING([dump_trace want address])
287 LB_LINUX_TRY_COMPILE([
290 #include <asm/stacktrace.h>
292 dump_trace(NULL, NULL, NULL, 0, NULL, NULL);
295 AC_DEFINE(HAVE_DUMP_TRACE_ADDRESS, 1,
296 [dump_trace want address argument])
302 EXTRA_KCFLAGS="$tmp_flags"
307 # 2.6.26 use int instead of atomic for sem.count
308 AC_DEFUN([LIBCFS_SEM_COUNT],
309 [AC_MSG_CHECKING([atomic sem.count])
310 LB_LINUX_TRY_COMPILE([
311 #include <asm/semaphore.h>
315 atomic_read(&s.count);
318 AC_DEFINE(HAVE_SEM_COUNT_ATOMIC, 1,
319 [semaphore counter is atomic])
325 # 2.6.27 have second argument to sock_map_fd
326 AC_DEFUN([LIBCFS_SOCK_MAP_FD_2ARG],
327 [AC_MSG_CHECKING([sock_map_fd have second argument])
328 LB_LINUX_TRY_COMPILE([
329 #include <linux/net.h>
331 sock_map_fd(NULL, 0);
334 AC_DEFINE(HAVE_SOCK_MAP_FD_2ARG, 1,
335 [sock_map_fd have second argument])
341 # LIBCFS_CRED_WRAPPERS
343 # wrappers for task's credentials are in sles11
345 AC_DEFUN([LIBCFS_CRED_WRAPPERS],
346 [AC_MSG_CHECKING([if kernel has wrappers for task's credentials])
347 LB_LINUX_TRY_COMPILE([
348 #include <linux/sched.h>
352 uid = current_uid() + sizeof(uid);
355 AC_DEFINE(HAVE_CRED_WRAPPERS, 1, [task's cred wrappers found])
362 # LN_STRUCT_CRED_IN_TASK
364 # struct cred was introduced in 2.6.29 to streamline credentials in task struct
366 AC_DEFUN([LIBCFS_STRUCT_CRED_IN_TASK],
367 [AC_MSG_CHECKING([if kernel has struct cred])
368 LB_LINUX_TRY_COMPILE([
369 #include <linux/sched.h>
371 struct task_struct *tsk = NULL;
372 tsk->real_cred = NULL;
375 AC_DEFINE(HAVE_STRUCT_CRED, 1, [struct cred found])
382 # LIBCFS_FUNC_UNSHARE_FS_STRUCT
384 # unshare_fs_struct was introduced in 2.6.30 to prevent others to directly
385 # mess with copy_fs_struct
387 AC_DEFUN([LIBCFS_FUNC_UNSHARE_FS_STRUCT],
388 [AC_MSG_CHECKING([if kernel defines unshare_fs_struct()])
389 tmp_flags="$EXTRA_KCFLAGS"
390 EXTRA_KCFLAGS="-Werror"
391 LB_LINUX_TRY_COMPILE([
392 #include <linux/sched.h>
393 #include <linux/fs_struct.h>
398 AC_DEFINE(HAVE_UNSHARE_FS_STRUCT, 1, [unshare_fs_struct found])
402 EXTRA_KCFLAGS="$tmp_flags"
406 # LIBCFS_HAVE_IS_COMPAT_TASK
408 # Added in 2.6.17, it wasn't until 2.6.29 that all
409 # Linux architectures have is_compat_task()
411 AC_DEFUN([LIBCFS_HAVE_IS_COMPAT_TASK],
412 [AC_MSG_CHECKING([if is_compat_task() is declared])
413 LB_LINUX_TRY_COMPILE([
414 #include <linux/compat.h>
416 int i = is_compat_task();
419 AC_DEFINE(HAVE_IS_COMPAT_TASK, 1, [is_compat_task() is available])
426 # LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
428 # 2.6.32-30.el6 adds a new 'walk_stack' field in 'struct stacktrace_ops'
430 AC_DEFUN([LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK],
431 [AC_MSG_CHECKING([if 'struct stacktrace_ops' has 'walk_stack' field])
432 LB_LINUX_TRY_COMPILE([
433 #include <asm/stacktrace.h>
435 ((struct stacktrace_ops *)0)->walk_stack(NULL, NULL, 0, NULL, NULL, NULL, NULL);
438 AC_DEFINE(STACKTRACE_OPS_HAVE_WALK_STACK, 1, ['struct stacktrace_ops' has 'walk_stack' field])
444 AC_DEFUN([LIBCFS_HAVE_OOM_H],
445 [LB_CHECK_FILE([$LINUX/include/linux/oom.h], [
446 AC_DEFINE(HAVE_LINUX_OOM_H, 1,
447 [kernel has include/oom.h])
454 # RHEL6/2.6.32 want to have pointer to shrinker self pointer in handler function
456 AC_DEFUN([LC_SHRINKER_WANT_SHRINK_PTR],
457 [AC_MSG_CHECKING([shrinker want self pointer in handler])
458 LB_LINUX_TRY_COMPILE([
459 #include <linux/mm.h>
461 struct shrinker *tmp = NULL;
462 tmp->shrink(tmp, 0, 0);
465 AC_DEFINE(HAVE_SHRINKER_WANT_SHRINK_PTR, 1,
466 [shrinker want self pointer in handler])
472 # 2.6.18 store oom parameters in task struct.
473 # 2.6.32 store oom parameters in signal struct
474 AC_DEFUN([LIBCFS_OOMADJ_IN_SIG],
475 [AC_MSG_CHECKING([kernel store oom parameters in task])
476 LB_LINUX_TRY_COMPILE([
477 #include <linux/sched.h>
479 ((struct signal_struct *)0)->oom_adj = 0;
482 AC_DEFINE(HAVE_OOMADJ_IN_SIG, 1,
483 [kernel store a oom parameters in signal struct])
490 # 2.6.33 no longer has ctl_name & strategy field in struct ctl_table.
492 AC_DEFUN([LIBCFS_SYSCTL_CTLNAME],
493 [AC_MSG_CHECKING([if ctl_table has a ctl_name field])
494 LB_LINUX_TRY_COMPILE([
495 #include <linux/sysctl.h>
498 ct.ctl_name = sizeof(ct);
501 AC_DEFINE(HAVE_SYSCTL_CTLNAME, 1,
502 [ctl_table has ctl_name field])
509 # LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE
511 # 2.6.34 adds __add_wait_queue_exclusive
513 AC_DEFUN([LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE],
514 [AC_MSG_CHECKING([if __add_wait_queue_exclusive exists])
515 LB_LINUX_TRY_COMPILE([
516 #include <linux/wait.h>
518 wait_queue_head_t queue;
521 __add_wait_queue_exclusive(&queue, &wait);
524 AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
525 [__add_wait_queue_exclusive exists])
532 # 2.6.35 kernel has sk_sleep function
534 AC_DEFUN([LC_SK_SLEEP],
535 [AC_MSG_CHECKING([if kernel has sk_sleep])
536 LB_LINUX_TRY_COMPILE([
537 #include <net/sock.h>
542 AC_DEFINE(HAVE_SK_SLEEP, 1, [kernel has sk_sleep])
549 # FC15 2.6.40-5 backported the "shrink_control" parameter to the memory
550 # pressure shrinker from Linux 3.0
552 AC_DEFUN([LC_SHRINK_CONTROL],
553 [AC_MSG_CHECKING([shrink_control is present])
554 LB_LINUX_TRY_COMPILE([
555 #include <linux/mm.h>
557 struct shrink_control tmp = {0};
558 tmp.nr_to_scan = sizeof(tmp);
561 AC_DEFINE(HAVE_SHRINK_CONTROL, 1,
562 [shrink_control is present])
571 # LNet linux kernel checks
573 AC_DEFUN([LIBCFS_PROG_LINUX],
575 LIBCFS_CONFIG_PANIC_DUMPLOG
577 LIBCFS_U64_LONG_LONG_LINUX
581 LIBCFS_HAVE_IS_COMPAT_TASK
583 LIBCFS_KMEM_CACHE_DESTROY_INT
585 LIBCFS_3ARGS_INIT_WORK
587 LIBCFS_2ARGS_REGISTER_SYSCTL
589 LIBCFS_KMEM_CACHE_CREATE_DTOR
592 LIBCFS_SYSCTL_UNNUMBERED
593 LIBCFS_SCATTERLIST_SETPAGE
594 LIBCFS_NETWORK_NAMESPACE
595 LIBCFS_FUNC_DUMP_TRACE
601 LIBCFS_STRUCT_CRED_IN_TASK
603 LIBCFS_FUNC_UNSHARE_FS_STRUCT
604 LIBCFS_SOCK_MAP_FD_2ARG
606 LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
607 LC_SHRINKER_WANT_SHRINK_PTR
611 LIBCFS_SYSCTL_CTLNAME
613 LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE
625 AC_DEFUN([LIBCFS_PROG_DARWIN],
626 [LB_DARWIN_CHECK_FUNCS([get_preemption_level])
630 # LIBCFS_PATH_DEFAULTS
632 # default paths for installed files
634 AC_DEFUN([LIBCFS_PATH_DEFAULTS],
641 # other configure checks
643 AC_DEFUN([LIBCFS_CONFIGURE],
644 [# lnet/utils/portals.c
645 AC_CHECK_HEADERS([asm/types.h endian.h sys/ioctl.h])
648 AC_CHECK_HEADERS([linux/version.h])
650 AC_CHECK_TYPE([spinlock_t],
651 [AC_DEFINE(HAVE_SPINLOCK_T, 1, [spinlock_t is defined])],
653 [#include <linux/spinlock.h>])
655 # lnet/utils/wirecheck.c
656 AC_CHECK_FUNCS([strnlen])
658 AC_CHECK_TYPE([umode_t],
659 [AC_DEFINE(HAVE_UMODE_T, 1, [umode_t is defined])],
661 [#include <asm/types.h>])
663 AC_CHECK_TYPE([__s8],
664 [AC_DEFINE(HAVE___S8, 1, [__s8 is defined])],
666 [#include <asm/types.h>])
668 AC_CHECK_TYPE([__u8],
669 [AC_DEFINE(HAVE___U8, 1, [__u8 is defined])],
671 [#include <asm/types.h>])
673 AC_CHECK_TYPE([__s16],
674 [AC_DEFINE(HAVE___S16, 1, [__s16 is defined])],
676 [#include <asm/types.h>])
678 AC_CHECK_TYPE([__u16],
679 [AC_DEFINE(HAVE___U16, 1, [__u16 is defined])],
681 [#include <asm/types.h>])
683 AC_CHECK_TYPE([__s32],
684 [AC_DEFINE(HAVE___S32, 1, [__s32 is defined])],
686 [#include <asm/types.h>])
688 AC_CHECK_TYPE([__u32],
689 [AC_DEFINE(HAVE___U32, 1, [__u32 is defined])],
691 [#include <asm/types.h>])
693 AC_CHECK_TYPE([__u64],
694 [AC_DEFINE(HAVE___U64, 1, [__u64 is defined])],
696 [#include <asm/types.h>])
698 AC_CHECK_TYPE([__s64],
699 [AC_DEFINE(HAVE___S64, 1, [__s64 is defined])],
701 [#include <asm/types.h>])
703 # check userland __u64 type
704 AC_MSG_CHECKING([userspace __u64 is long long type])
706 CFLAGS="$CFLAGS -Werror"
709 #include <linux/types.h>
710 #include <linux/stddef.h>
712 unsigned long long *data1;
720 AC_DEFINE(HAVE_USER__U64_LONG_LONG, 1,
721 [__u64 is long long type])
727 # -------- Check for required packages --------------
730 AC_MSG_CHECKING([if efence debugging support is requested])
731 AC_ARG_ENABLE(efence,
732 AC_HELP_STRING([--enable-efence],
733 [use efence library]),
734 [],[enable_efence='no'])
735 AC_MSG_RESULT([$enable_efence])
736 if test "$enable_efence" = "yes" ; then
738 AC_DEFINE(HAVE_LIBEFENCE, 1, [libefence support is requested])
745 # -------- check for -lpthread support ----
746 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
747 AC_ARG_ENABLE([libpthread],
748 AC_HELP_STRING([--disable-libpthread],
749 [disable libpthread]),
750 [],[enable_libpthread=yes])
751 if test "$enable_libpthread" = "yes" ; then
752 AC_CHECK_LIB([pthread], [pthread_create],
753 [ENABLE_LIBPTHREAD="yes"],
754 [ENABLE_LIBPTHREAD="no"])
755 if test "$ENABLE_LIBPTHREAD" = "yes" ; then
756 AC_MSG_RESULT([$ENABLE_LIBPTHREAD])
757 PTHREAD_LIBS="-lpthread"
758 AC_DEFINE([HAVE_LIBPTHREAD], 1, [use libpthread])
761 AC_MSG_RESULT([no libpthread is found])
763 AC_SUBST(PTHREAD_LIBS)
765 AC_MSG_RESULT([no (disabled explicitly)])
766 ENABLE_LIBPTHREAD="no"
768 AC_SUBST(ENABLE_LIBPTHREAD)
774 # LIBCFS_CONDITIONALS
776 # AM_CONDITOINAL defines for lnet
778 AC_DEFUN([LIBCFS_CONDITIONALS],
783 # LIBCFS_CONFIG_FILES
785 # files that should be generated with AC_OUTPUT
787 AC_DEFUN([LIBCFS_CONFIG_FILES],
792 libcfs/autoconf/Makefile
793 libcfs/include/Makefile
794 libcfs/include/libcfs/Makefile
795 libcfs/include/libcfs/linux/Makefile
796 libcfs/include/libcfs/posix/Makefile
797 libcfs/include/libcfs/util/Makefile
798 libcfs/libcfs/Makefile
799 libcfs/libcfs/autoMakefile
800 libcfs/libcfs/linux/Makefile
801 libcfs/libcfs/posix/Makefile
802 libcfs/libcfs/util/Makefile
803 libcfs/include/libcfs/darwin/Makefile
804 libcfs/libcfs/darwin/Makefile