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 # LIBCFS_TASKLIST_LOCK
245 # 2.6.18 remove tasklist_lock export
246 AC_DEFUN([LIBCFS_TASKLIST_LOCK],
247 [LB_CHECK_SYMBOL_EXPORT([tasklist_lock],
249 AC_DEFINE(HAVE_TASKLIST_LOCK, 1,
250 [tasklist_lock exported])
256 # kmem_cache_destroy(cachep) return void instead of
258 AC_DEFUN([LIBCFS_KMEM_CACHE_DESTROY_INT],
259 [AC_MSG_CHECKING([kmem_cache_destroy(cachep) return int])
260 LB_LINUX_TRY_COMPILE([
261 #include <linux/slab.h>
263 int i = kmem_cache_destroy(NULL);
266 AC_DEFINE(HAVE_KMEM_CACHE_DESTROY_INT, 1,
267 [kmem_cache_destroy(cachep) return int])
274 #panic_notifier_list use atomic_notifier operations
276 AC_DEFUN([LIBCFS_ATOMIC_PANIC_NOTIFIER],
277 [AC_MSG_CHECKING([panic_notifier_list is atomic])
278 LB_LINUX_TRY_COMPILE([
279 #include <linux/notifier.h>
280 #include <linux/kernel.h>
282 struct atomic_notifier_head panic_notifier_list;
285 AC_DEFINE(HAVE_ATOMIC_PANIC_NOTIFIER, 1,
286 [panic_notifier_list is atomic_notifier_head])
292 # 2.6.20 API change INIT_WORK use 2 args and not
294 AC_DEFUN([LIBCFS_3ARGS_INIT_WORK],
295 [AC_MSG_CHECKING([check INIT_WORK want 3 args])
296 LB_LINUX_TRY_COMPILE([
297 #include <linux/workqueue.h>
299 struct work_struct work;
301 INIT_WORK(&work, NULL, NULL);
304 AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1,
305 [INIT_WORK use 3 args and store data inside])
311 # 2.6.21 api change. 'register_sysctl_table' use only one argument,
312 # instead of more old which need two.
313 AC_DEFUN([LIBCFS_2ARGS_REGISTER_SYSCTL],
314 [AC_MSG_CHECKING([check register_sysctl_table want 2 args])
315 LB_LINUX_TRY_COMPILE([
316 #include <linux/sysctl.h>
318 return register_sysctl_table(NULL,0);
321 AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
322 [register_sysctl_table want 2 args])
328 # 2.6.21 marks kmem_cache_t deprecated and uses struct kmem_cache
330 AC_DEFUN([LIBCFS_KMEM_CACHE],
331 [AC_MSG_CHECKING([check kernel has struct kmem_cache])
332 tmp_flags="$EXTRA_KCFLAGS"
333 EXTRA_KCFLAGS="-Werror"
334 LB_LINUX_TRY_COMPILE([
335 #include <linux/slab.h>
336 typedef struct kmem_cache cache_t;
338 cache_t *cachep = NULL;
340 kmem_cache_alloc(cachep, 0);
343 AC_DEFINE(HAVE_KMEM_CACHE, 1,
344 [kernel has struct kmem_cache])
348 EXTRA_KCFLAGS="$tmp_flags"
350 # 2.6.23 lost dtor argument
351 AC_DEFUN([LIBCFS_KMEM_CACHE_CREATE_DTOR],
352 [AC_MSG_CHECKING([check kmem_cache_create has dtor argument])
353 LB_LINUX_TRY_COMPILE([
354 #include <linux/slab.h>
356 kmem_cache_create(NULL, 0, 0, 0, NULL, NULL);
359 AC_DEFINE(HAVE_KMEM_CACHE_CREATE_DTOR, 1,
360 [kmem_cache_create has dtor argument])
369 # LNet linux kernel checks
371 AC_DEFUN([LIBCFS_PROG_LINUX],
373 LIBCFS_FUNC_CPU_ONLINE
375 LIBCFS_TYPE_CPUMASK_T
376 LIBCFS_CONFIG_PANIC_DUMPLOG
378 LIBCFS_STRUCT_PAGE_LIST
379 LIBCFS_STRUCT_SIGHAND
380 LIBCFS_FUNC_SHOW_TASK
387 LIBCFS_KMEM_CACHE_DESTROY_INT
388 LIBCFS_ATOMIC_PANIC_NOTIFIER
390 LIBCFS_3ARGS_INIT_WORK
392 LIBCFS_2ARGS_REGISTER_SYSCTL
395 LIBCFS_KMEM_CACHE_CREATE_DTOR
403 AC_DEFUN([LIBCFS_PROG_DARWIN],
404 [LB_DARWIN_CHECK_FUNCS([get_preemption_level])
408 # LIBCFS_PATH_DEFAULTS
410 # default paths for installed files
412 AC_DEFUN([LIBCFS_PATH_DEFAULTS],
419 # other configure checks
421 AC_DEFUN([LIBCFS_CONFIGURE],
422 [# lnet/utils/portals.c
423 AC_CHECK_HEADERS([asm/types.h endian.h sys/ioctl.h])
426 AC_CHECK_HEADERS([linux/version.h])
428 AC_CHECK_TYPE([spinlock_t],
429 [AC_DEFINE(HAVE_SPINLOCK_T, 1, [spinlock_t is defined])],
431 [#include <linux/spinlock.h>])
433 # lnet/utils/wirecheck.c
434 AC_CHECK_FUNCS([strnlen])
436 # -------- Check for required packages --------------
439 AC_MSG_CHECKING([if efence debugging support is requested])
440 AC_ARG_ENABLE(efence,
441 AC_HELP_STRING([--enable-efence],
442 [use efence library]),
443 [],[enable_efence='no'])
444 AC_MSG_RESULT([$enable_efence])
445 if test "$enable_efence" = "yes" ; then
447 AC_DEFINE(HAVE_LIBEFENCE, 1, [libefence support is requested])
454 # -------- check for -lpthread support ----
455 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
456 AC_ARG_ENABLE([libpthread],
457 AC_HELP_STRING([--disable-libpthread],
458 [disable libpthread]),
459 [],[enable_libpthread=yes])
460 if test "$enable_libpthread" = "yes" ; then
461 AC_CHECK_LIB([pthread], [pthread_create],
462 [ENABLE_LIBPTHREAD="yes"],
463 [ENABLE_LIBPTHREAD="no"])
464 if test "$ENABLE_LIBPTHREAD" = "yes" ; then
465 AC_MSG_RESULT([$ENABLE_LIBPTHREAD])
466 PTHREAD_LIBS="-lpthread"
467 AC_DEFINE([HAVE_LIBPTHREAD], 1, [use libpthread])
470 AC_MSG_RESULT([no libpthread is found])
472 AC_SUBST(PTHREAD_LIBS)
474 AC_MSG_RESULT([no (disabled explicitly)])
475 ENABLE_LIBPTHREAD="no"
477 AC_SUBST(ENABLE_LIBPTHREAD)
483 # LIBCFS_CONDITIONALS
485 # AM_CONDITOINAL defines for lnet
487 AC_DEFUN([LIBCFS_CONDITIONALS],
492 # LIBCFS_CONFIG_FILES
494 # files that should be generated with AC_OUTPUT
496 AC_DEFUN([LIBCFS_CONFIG_FILES],
501 libcfs/autoconf/Makefile
502 libcfs/include/Makefile
503 libcfs/include/libcfs/Makefile
504 libcfs/include/libcfs/linux/Makefile
505 libcfs/include/libcfs/posix/Makefile
506 libcfs/include/libcfs/util/Makefile
507 libcfs/libcfs/Makefile
508 libcfs/libcfs/autoMakefile
509 libcfs/libcfs/linux/Makefile
510 libcfs/libcfs/posix/Makefile
511 libcfs/libcfs/util/Makefile
513 case $lb_target_os in
516 libcfs/include/libcfs/darwin/Makefile
517 libcfs/libcfs/darwin/Makefile