4 # whether to enable various libcfs debugs (CDEBUG, ENTRY/EXIT, LASSERT, etc.)
6 AC_DEFUN([LN_CONFIG_CDEBUG], [
7 AC_MSG_CHECKING([whether to enable CDEBUG, CWARN])
8 AC_ARG_ENABLE([libcfs_cdebug],
9 AC_HELP_STRING([--disable-libcfs-cdebug],
10 [disable libcfs CDEBUG, CWARN]),
11 [], [enable_libcfs_cdebug="yes"])
12 AC_MSG_RESULT([$enable_libcfs_cdebug])
13 AS_IF([test "x$enable_libcfs_cdebug" = xyes],
14 [AC_DEFINE(CDEBUG_ENABLED, 1, [enable libcfs CDEBUG, CWARN])])
16 AC_MSG_CHECKING([whether to enable ENTRY/EXIT])
17 AC_ARG_ENABLE([libcfs_trace],
18 AC_HELP_STRING([--disable-libcfs-trace],
19 [disable libcfs ENTRY/EXIT]),
20 [], [enable_libcfs_trace="yes"])
21 AC_MSG_RESULT([$enable_libcfs_trace])
22 AS_IF([test "x$enable_libcfs_trace" = xyes],
23 [AC_DEFINE(CDEBUG_ENTRY_EXIT, 1, [enable libcfs ENTRY/EXIT])])
25 AC_MSG_CHECKING([whether to enable LASSERT, LASSERTF])
26 AC_ARG_ENABLE([libcfs_assert],
27 AC_HELP_STRING([--disable-libcfs-assert],
28 [disable libcfs LASSERT, LASSERTF]),
29 [], [enable_libcfs_assert="yes"])
30 AC_MSG_RESULT([$enable_libcfs_assert])
31 AS_IF([test x$enable_libcfs_assert = xyes],
32 [AC_DEFINE(LIBCFS_DEBUG, 1, [enable libcfs LASSERT, LASSERTF])])
36 # LIBCFS_CONFIG_PANIC_DUMPLOG
38 # check if tunable panic_dumplog is wanted
40 AC_DEFUN([LIBCFS_CONFIG_PANIC_DUMPLOG], [
41 AC_MSG_CHECKING([whether to use tunable 'panic_dumplog' support])
42 AC_ARG_ENABLE([panic_dumplog],
43 AC_HELP_STRING([--enable-panic_dumplog],
44 [enable panic_dumplog]),
45 [], [enable_panic_dumplog="no"])
46 AC_MSG_RESULT([$enable_panic_dumplog])
47 AS_IF([test "x$enable_panic_dumplog" = xyes],
48 [AC_DEFINE(LNET_DUMP_ON_PANIC, 1, [use dumplog on panic])])
49 ]) # LIBCFS_CONFIG_PANIC_DUMPLOG
52 # LIBCFS_U64_LONG_LONG_LINUX
54 # check kernel __u64 type
56 AC_DEFUN([LIBCFS_U64_LONG_LONG_LINUX], [
57 tmp_flags="$EXTRA_KCFLAGS"
58 EXTRA_KCFLAGS="$EXTRA_KCFLAGS -Werror"
59 LB_CHECK_COMPILE([if Linux kernel '__u64' is 'long long' type],
60 kernel_u64_long_long, [
61 #include <linux/types.h>
62 #include <linux/stddef.h>
64 unsigned long long *data;
65 data = (__u64*)sizeof(data);
67 AC_DEFINE(HAVE_KERN__U64_LONG_LONG, 1,
68 [Linux kernel __u64 is long long type])
70 EXTRA_KCFLAGS="$tmp_flags"
71 ]) # LIBCFS_U64_LONG_LONG_LINUX
74 # LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
76 # 2.6.32-30.el6 adds a new 'walk_stack' field in 'struct stacktrace_ops'
78 AC_DEFUN([LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK], [
79 LB_CHECK_COMPILE([if 'struct stacktrace_ops' has 'walk_stack' field],
80 stacktrace_ops_walk_stack, [
81 #include <asm/stacktrace.h>
83 ((struct stacktrace_ops *)0)->walk_stack(NULL, NULL, 0, NULL, NULL, NULL, NULL);
85 AC_DEFINE(STACKTRACE_OPS_HAVE_WALK_STACK, 1,
86 ['struct stacktrace_ops' has 'walk_stack' field])
88 ]) # LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
91 # LIBCFS_STACKTRACE_WARNING
93 # 3.0 removes stacktrace_ops warning* functions
95 AC_DEFUN([LIBCFS_STACKTRACE_WARNING], [
96 LB_CHECK_COMPILE([if 'stacktrace_ops.warning' is exist],
97 stacktrace_ops_warning, [
100 #include <asm/stacktrace.h>
102 ((struct stacktrace_ops *)0)->warning(NULL, NULL);
104 AC_DEFINE(HAVE_STACKTRACE_WARNING, 1,
105 [stacktrace_ops.warning is exist])
107 ]) # LIBCFS_STACKTRACE_WARNING
110 # LC_SHRINKER_WANT_SHRINK_PTR
112 # RHEL6/2.6.32 want to have pointer to shrinker self pointer in handler function
114 AC_DEFUN([LC_SHRINKER_WANT_SHRINK_PTR], [
115 LB_CHECK_COMPILE([if 'shrinker' want self pointer in handler],
116 shrink_self_pointer, [
117 #include <linux/mm.h>
119 struct shrinker *tmp = NULL;
120 tmp->shrink(tmp, 0, 0);
122 AC_DEFINE(HAVE_SHRINKER_WANT_SHRINK_PTR, 1,
123 [shrinker want self pointer in handler])
125 ]) # LC_SHRINKER_WANT_SHRINK_PTR
128 # LIBCFS_SYSCTL_CTLNAME
130 # 2.6.33 no longer has ctl_name & strategy field in struct ctl_table.
132 AC_DEFUN([LIBCFS_SYSCTL_CTLNAME], [
133 LB_CHECK_COMPILE([if 'ctl_table' has a 'ctl_name' field],
134 ctl_table_ctl_name, [
135 #include <linux/sysctl.h>
138 ct.ctl_name = sizeof(ct);
140 AC_DEFINE(HAVE_SYSCTL_CTLNAME, 1,
141 [ctl_table has ctl_name field])
143 ]) # LIBCFS_SYSCTL_CTLNAME
146 # LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE
148 # 2.6.34 adds __add_wait_queue_exclusive
150 AC_DEFUN([LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE], [
151 LB_CHECK_COMPILE([if '__add_wait_queue_exclusive' exists],
152 __add_wait_queue_exclusive, [
153 #include <linux/wait.h>
155 wait_queue_head_t queue;
157 __add_wait_queue_exclusive(&queue, &wait);
159 AC_DEFINE(HAVE___ADD_WAIT_QUEUE_EXCLUSIVE, 1,
160 [__add_wait_queue_exclusive exists])
162 ]) # LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE
167 # 2.6.35 kernel has sk_sleep function
169 AC_DEFUN([LC_SK_SLEEP], [
170 LB_CHECK_COMPILE([if Linux kernel has 'sk_sleep'],
172 #include <net/sock.h>
176 AC_DEFINE(HAVE_SK_SLEEP, 1,
177 [kernel has sk_sleep])
182 # LIBCFS_DUMP_TRACE_ADDRESS
184 # 2.6.39 adds a base pointer address argument to dump_trace
186 AC_DEFUN([LIBCFS_DUMP_TRACE_ADDRESS], [
187 LB_CHECK_COMPILE([if 'dump_trace' want address],
188 dump_trace_address, [
191 #include <asm/stacktrace.h>
193 dump_trace(NULL, NULL, NULL, 0, NULL, NULL);
195 AC_DEFINE(HAVE_DUMP_TRACE_ADDRESS, 1,
196 [dump_trace want address argument])
198 ]) # LIBCFS_DUMP_TRACE_ADDRESS
203 # FC15 2.6.40-5 backported the "shrink_control" parameter to the memory
204 # pressure shrinker from Linux 3.0
206 AC_DEFUN([LC_SHRINK_CONTROL], [
207 LB_CHECK_COMPILE([if 'shrink_control' is present],
209 #include <linux/mm.h>
211 struct shrink_control tmp = {0};
212 tmp.nr_to_scan = sizeof(tmp);
214 AC_DEFINE(HAVE_SHRINK_CONTROL, 1,
215 [shrink_control is present])
217 ]) # LC_SHRINK_CONTROL
220 # LIBCFS_PROCESS_NAMESPACE
222 # 3.5 introduced process namespace
223 AC_DEFUN([LIBCFS_PROCESS_NAMESPACE], [
224 LB_CHECK_LINUX_HEADER([linux/uidgid.h], [
225 AC_DEFINE(HAVE_UIDGID_HEADER, 1,
226 [uidgid.h is present])])
227 ]) # LIBCFS_PROCESS_NAMESPACE
232 # 3.5 added helpers to read the new uid/gid types from VFS structures
233 # SLE11 SP3 has uidgid.h but not the helpers
235 AC_DEFUN([LIBCFS_I_UID_READ], [
236 LB_CHECK_COMPILE([if 'i_uid_read' is present],
238 #include <linux/fs.h>
242 AC_DEFINE(HAVE_I_UID_READ, 1, [i_uid_read is present])
244 ]) # LIBCFS_I_UID_READ
247 # LIBCFS_SOCK_ALLOC_FILE
249 # FC18 3.7.2-201 unexport sock_map_fd() change to
250 # use sock_alloc_file().
251 # upstream commit 56b31d1c9f1e6a3ad92e7bfe252721e05d92b285
253 AC_DEFUN([LIBCFS_SOCK_ALLOC_FILE], [
254 LB_CHECK_EXPORT([sock_alloc_file], [net/socket.c], [
255 LB_CHECK_COMPILE([if 'sock_alloc_file' takes 3 arguments],
256 sock_alloc_file_3args, [
257 #include <linux/net.h>
259 sock_alloc_file(NULL, 0, NULL);
261 AC_DEFINE(HAVE_SOCK_ALLOC_FILE_3ARGS, 1,
262 [sock_alloc_file takes 3 arguments])
264 AC_DEFINE(HAVE_SOCK_ALLOC_FILE, 1,
265 [sock_alloc_file is exported])
268 ]) # LIBCFS_SOCK_ALLOC_FILE
273 AC_DEFUN([LIBCFS_HAVE_CRC32], [
274 LB_CHECK_CONFIG_IM([CRC32],
275 [have_crc32="yes"], [have_crc32="no"])
276 AS_IF([test "x$have_crc32" = xyes],
277 [AC_DEFINE(HAVE_CRC32, 1,
278 [kernel compiled with CRC32 functions])])
279 ]) # LIBCFS_HAVE_CRC32
282 # LIBCFS_ENABLE_CRC32_ACCEL
284 AC_DEFUN([LIBCFS_ENABLE_CRC32_ACCEL], [
285 LB_CHECK_CONFIG_IM([CRYPTO_CRC32_PCLMUL],
286 [enable_crc32_crypto="no"], [enable_crc32_crypto="yes"])
287 AS_IF([test "x$have_crc32" = xyes -a "x$enable_crc32_crypto" = xyes], [
288 AC_DEFINE(NEED_CRC32_ACCEL, 1, [need pclmulqdq based crc32])
291 No crc32 pclmulqdq crypto api found, enable internal pclmulqdq based crc32
293 ]) # LIBCFS_ENABLE_CRC32_ACCEL
296 # LIBCFS_ENABLE_CRC32C_ACCEL
298 AC_DEFUN([LIBCFS_ENABLE_CRC32C_ACCEL], [
299 LB_CHECK_CONFIG_IM([CRYPTO_CRC32C_INTEL],
300 [enable_crc32c_crypto="no"], [enable_crc32c_crypto="yes"])
301 AS_IF([test "x$enable_crc32c_crypto" = xyes], [
302 AC_DEFINE(NEED_CRC32C_ACCEL, 1, [need pclmulqdq based crc32c])
305 No crc32c pclmulqdq crypto api found, enable internal pclmulqdq based crc32c
307 ]) # LIBCFS_ENABLE_CRC32C_ACCEL
310 # FC19 3.12 kernel struct shrinker change
312 AC_DEFUN([LIBCFS_SHRINKER_COUNT],[
313 LB_CHECK_COMPILE([shrinker has 'count_objects'],
314 shrinker_count_objects, [
315 #include <linux/mmzone.h>
316 #include <linux/shrinker.h>
318 ((struct shrinker*)0)->count_objects(NULL, NULL);
320 AC_DEFINE(HAVE_SHRINKER_COUNT, 1,
321 [shrinker has count_objects memeber])
328 # LibCFS linux kernel checks
330 AC_DEFUN([LIBCFS_PROG_LINUX], [
331 AC_MSG_NOTICE([LibCFS kernel checks
332 ==============================================================================])
333 LIBCFS_CONFIG_PANIC_DUMPLOG
335 LIBCFS_U64_LONG_LONG_LINUX
337 LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
338 LC_SHRINKER_WANT_SHRINK_PTR
340 LIBCFS_SYSCTL_CTLNAME
342 LIBCFS_ADD_WAIT_QUEUE_EXCLUSIVE
346 LIBCFS_DUMP_TRACE_ADDRESS
350 LIBCFS_STACKTRACE_WARNING
352 LIBCFS_PROCESS_NAMESPACE
355 LIBCFS_SOCK_ALLOC_FILE
358 LIBCFS_ENABLE_CRC32_ACCEL
360 LIBCFS_ENABLE_CRC32C_ACCEL
362 LIBCFS_SHRINKER_COUNT
363 ]) # LIBCFS_PROG_LINUX
370 AC_DEFUN([LIBCFS_PROG_DARWIN], [
371 LB_DARWIN_CHECK_FUNCS([get_preemption_level])
372 ]) # LIBCFS_PROG_DARWIN
375 # LIBCFS_PATH_DEFAULTS
377 # default paths for installed files
379 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
380 ]) # LIBCFS_PATH_DEFAULTS
385 # other configure checks
387 AC_DEFUN([LIBCFS_CONFIGURE], [
388 AC_MSG_NOTICE([LibCFS core checks
389 ==============================================================================])
391 # lnet/utils/portals.c
392 AC_CHECK_HEADERS([asm/types.h endian.h sys/ioctl.h])
395 AC_CHECK_HEADERS([linux/version.h])
397 AC_CHECK_TYPE([spinlock_t],
398 [AC_DEFINE(HAVE_SPINLOCK_T, 1, [spinlock_t is defined])],
400 [#include <linux/spinlock.h>])
402 # lnet/utils/wirecheck.c
403 AC_CHECK_FUNCS([strnlen])
405 # lnet/libcfs/user-prim.c, missing for RHEL5 and earlier userspace
406 AC_CHECK_FUNCS([strlcpy])
408 # libcfs/libcfs/user-prim.c, missing for RHEL5 and earlier userspace
409 AC_CHECK_FUNCS([strlcat])
411 AC_CHECK_TYPE([umode_t],
412 [AC_DEFINE(HAVE_UMODE_T, 1, [umode_t is defined])],
414 [#include <asm/types.h>])
416 # -------- Check for required packages --------------
418 AC_MSG_NOTICE([LibCFS required packages checks
419 ==============================================================================])
421 AC_MSG_CHECKING([whether to enable 'efence' debugging support])
422 AC_ARG_ENABLE(efence,
423 AC_HELP_STRING([--enable-efence],
424 [use efence library]),
425 [], [enable_efence="no"])
426 AC_MSG_RESULT([$enable_efence])
427 AS_IF([test "$enable_efence" = yes], [
429 AC_DEFINE(HAVE_LIBEFENCE, 1, [libefence support is requested])
435 # -------- check for -lpthread support ----
437 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
438 AC_ARG_ENABLE([libpthread],
439 AC_HELP_STRING([--disable-libpthread],
440 [disable libpthread]),
441 [], [enable_libpthread="yes"])
442 AC_MSG_RESULT([$enable_libpthread])
443 AS_IF([test "x$enable_libpthread" = xyes], [
444 AC_CHECK_LIB([pthread], [pthread_create],
445 [ENABLE_LIBPTHREAD="yes"],
446 [ENABLE_LIBPTHREAD="no"])
447 AS_IF([test "$ENABLE_LIBPTHREAD" = yes], [
448 PTHREAD_LIBS="-lpthread"
449 AC_DEFINE([HAVE_LIBPTHREAD], 1, [use libpthread])
453 AC_SUBST(PTHREAD_LIBS)
455 AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
456 ENABLE_LIBPTHREAD="no"
458 AC_SUBST(ENABLE_LIBPTHREAD)
459 ]) # LIBCFS_CONFIGURE
462 # LIBCFS_CONDITIONALS
464 AC_DEFUN([LIBCFS_CONDITIONALS], [
465 AM_CONDITIONAL(HAVE_CRC32, [test "x$have_crc32" = xyes])
466 AM_CONDITIONAL(NEED_PCLMULQDQ_CRC32, [test "x$have_crc32" = xyes -a "x$enable_crc32_crypto" = xyes])
467 AM_CONDITIONAL(NEED_PCLMULQDQ_CRC32C, [test "x$enable_crc32c_crypto" = xyes])
468 ]) # LIBCFS_CONDITIONALS
471 # LIBCFS_CONFIG_FILES
473 # files that should be generated with AC_OUTPUT
475 AC_DEFUN([LIBCFS_CONFIG_FILES], [
480 libcfs/autoconf/Makefile
481 libcfs/include/Makefile
482 libcfs/include/libcfs/Makefile
483 libcfs/include/libcfs/linux/Makefile
484 libcfs/include/libcfs/posix/Makefile
485 libcfs/include/libcfs/util/Makefile
486 libcfs/libcfs/Makefile
487 libcfs/libcfs/autoMakefile
488 libcfs/libcfs/linux/Makefile
489 libcfs/libcfs/posix/Makefile
490 libcfs/libcfs/util/Makefile
491 libcfs/include/libcfs/darwin/Makefile
492 libcfs/libcfs/darwin/Makefile
494 ]) # LIBCFS_CONFIG_FILES