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[fs/lustre-release.git] / libcfs / autoconf / lustre-libcfs.m4
1 #
2 # LIBCFS_CONFIG_CDEBUG
3 #
4 # whether to enable various libcfs debugs (CDEBUG, ENTRY/EXIT, LASSERT, etc.)
5 #
6 AC_DEFUN([LIBCFS_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])])
15
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])])
24
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])])
33 ]) # LIBCFS_CONFIG_CDEBUG
34
35 #
36 # LIBCFS_CONFIG_PANIC_DUMPLOG
37 #
38 # check if tunable panic_dumplog is wanted
39 #
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
50
51 #
52 # LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
53 #
54 # 2.6.32-30.el6 adds a new 'walk_stack' field in 'struct stacktrace_ops'
55 #
56 AC_DEFUN([LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK], [
57 LB_CHECK_COMPILE([if 'struct stacktrace_ops' has 'walk_stack' field],
58 stacktrace_ops_walk_stack, [
59         #include <asm/stacktrace.h>
60 ],[
61         ((struct stacktrace_ops *)0)->walk_stack(NULL, NULL, 0, NULL, NULL, NULL, NULL);
62 ],[
63         AC_DEFINE(STACKTRACE_OPS_HAVE_WALK_STACK, 1,
64                 ['struct stacktrace_ops' has 'walk_stack' field])
65 ])
66 ]) # LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
67
68 #
69 # LIBCFS_STACKTRACE_WARNING
70 #
71 # 3.0 removes stacktrace_ops warning* functions
72 #
73 AC_DEFUN([LIBCFS_STACKTRACE_WARNING], [
74 LB_CHECK_COMPILE([if 'stacktrace_ops.warning' is exist],
75 stacktrace_ops_warning, [
76         struct task_struct;
77         struct pt_regs;
78         #include <asm/stacktrace.h>
79 ],[
80         ((struct stacktrace_ops *)0)->warning(NULL, NULL);
81 ],[
82         AC_DEFINE(HAVE_STACKTRACE_WARNING, 1,
83                 [stacktrace_ops.warning is exist])
84 ])
85 ]) # LIBCFS_STACKTRACE_WARNING
86
87 #
88 # LC_SHRINKER_WANT_SHRINK_PTR
89 #
90 # RHEL6/2.6.32 want to have pointer to shrinker self pointer in handler function
91 #
92 AC_DEFUN([LC_SHRINKER_WANT_SHRINK_PTR], [
93 LB_CHECK_COMPILE([if 'shrinker' want self pointer in handler],
94 shrink_self_pointer, [
95         #include <linux/mm.h>
96 ],[
97         struct shrinker *tmp = NULL;
98         tmp->shrink(tmp, 0, 0);
99 ],[
100         AC_DEFINE(HAVE_SHRINKER_WANT_SHRINK_PTR, 1,
101                 [shrinker want self pointer in handler])
102 ])
103 ]) # LC_SHRINKER_WANT_SHRINK_PTR
104
105 #
106 # LIBCFS_SYSCTL_CTLNAME
107 #
108 # 2.6.33 no longer has ctl_name & strategy field in struct ctl_table.
109 #
110 AC_DEFUN([LIBCFS_SYSCTL_CTLNAME], [
111 LB_CHECK_COMPILE([if 'ctl_table' has a 'ctl_name' field],
112 ctl_table_ctl_name, [
113         #include <linux/sysctl.h>
114 ],[
115         struct ctl_table ct;
116         ct.ctl_name = sizeof(ct);
117 ],[
118         AC_DEFINE(HAVE_SYSCTL_CTLNAME, 1,
119                 [ctl_table has ctl_name field])
120 ])
121 ]) # LIBCFS_SYSCTL_CTLNAME
122
123 #
124 # LIBCFS_KSTRTOUL
125 #
126 # 2.6.38 kstrtoul is added
127 #
128 AC_DEFUN([LIBCFS_KSTRTOUL], [
129 LB_CHECK_COMPILE([if Linux kernel has 'kstrtoul'],
130 kstrtoul, [
131         #include <linux/kernel.h>
132 ],[
133         unsigned long result;
134         return kstrtoul("12345", 0, &result);
135 ],[
136         AC_DEFINE(HAVE_KSTRTOUL, 1,
137                 [kernel has kstrtoul])
138 ])
139 ]) # LIBCFS_KSTRTOUL
140
141 #
142 # LIBCFS_DUMP_TRACE_ADDRESS
143 #
144 # 2.6.39 adds a base pointer address argument to dump_trace
145 #
146 AC_DEFUN([LIBCFS_DUMP_TRACE_ADDRESS], [
147 LB_CHECK_COMPILE([if 'dump_trace' want address],
148 dump_trace_address, [
149         struct task_struct;
150         struct pt_regs;
151         #include <asm/stacktrace.h>
152 ],[
153         dump_trace(NULL, NULL, NULL, 0, NULL, NULL);
154 ],[
155         AC_DEFINE(HAVE_DUMP_TRACE_ADDRESS, 1,
156                 [dump_trace want address argument])
157 ])
158 ]) # LIBCFS_DUMP_TRACE_ADDRESS
159
160 #
161 # LC_SHRINK_CONTROL
162 #
163 # FC15 2.6.40-5 backported the "shrink_control" parameter to the memory
164 # pressure shrinker from Linux 3.0
165 #
166 AC_DEFUN([LC_SHRINK_CONTROL], [
167 LB_CHECK_COMPILE([if 'shrink_control' is present],
168 shrink_control, [
169         #include <linux/atomic.h>
170         #include <linux/mm.h>
171 ],[
172         struct shrink_control tmp = {0};
173         tmp.nr_to_scan = sizeof(tmp);
174 ],[
175         AC_DEFINE(HAVE_SHRINK_CONTROL, 1,
176                 [shrink_control is present])
177 ])
178 ]) # LC_SHRINK_CONTROL
179
180 #
181 # LIBCFS_PROCESS_NAMESPACE
182 #
183 # 3.5 introduced process namespace
184 AC_DEFUN([LIBCFS_PROCESS_NAMESPACE], [
185 LB_CHECK_LINUX_HEADER([linux/uidgid.h], [
186         AC_DEFINE(HAVE_UIDGID_HEADER, 1,
187                 [uidgid.h is present])])
188 ]) # LIBCFS_PROCESS_NAMESPACE
189
190 #
191 # LIBCFS_I_UID_READ
192 #
193 # 3.5 added helpers to read the new uid/gid types from VFS structures
194 # SLE11 SP3 has uidgid.h but not the helpers
195 #
196 AC_DEFUN([LIBCFS_I_UID_READ], [
197 LB_CHECK_COMPILE([if 'i_uid_read' is present],
198 i_uid_read, [
199         #include <linux/fs.h>
200 ],[
201         i_uid_read(NULL);
202 ],[
203         AC_DEFINE(HAVE_I_UID_READ, 1, [i_uid_read is present])
204 ])
205 ]) # LIBCFS_I_UID_READ
206
207 #
208 # LIBCFS_SOCK_ALLOC_FILE
209 #
210 # FC18 3.7.2-201 unexport sock_map_fd() change to
211 # use sock_alloc_file().
212 # upstream commit 56b31d1c9f1e6a3ad92e7bfe252721e05d92b285
213 #
214 AC_DEFUN([LIBCFS_SOCK_ALLOC_FILE], [
215 LB_CHECK_EXPORT([sock_alloc_file], [net/socket.c], [
216         LB_CHECK_COMPILE([if 'sock_alloc_file' takes 3 arguments],
217         sock_alloc_file_3args, [
218                 #include <linux/net.h>
219         ],[
220                 sock_alloc_file(NULL, 0, NULL);
221         ],[
222                 AC_DEFINE(HAVE_SOCK_ALLOC_FILE_3ARGS, 1,
223                         [sock_alloc_file takes 3 arguments])
224         ],[
225                 AC_DEFINE(HAVE_SOCK_ALLOC_FILE, 1,
226                         [sock_alloc_file is exported])
227         ])
228 ])
229 ]) # LIBCFS_SOCK_ALLOC_FILE
230
231 #
232 # LIBCFS_HAVE_CRC32
233 #
234 AC_DEFUN([LIBCFS_HAVE_CRC32], [
235 LB_CHECK_CONFIG_IM([CRC32],
236         [have_crc32="yes"], [have_crc32="no"])
237 AS_IF([test "x$have_crc32" = xyes],
238         [AC_DEFINE(HAVE_CRC32, 1,
239                 [kernel compiled with CRC32 functions])])
240 ]) # LIBCFS_HAVE_CRC32
241
242 #
243 # LIBCFS_ENABLE_CRC32_ACCEL
244 #
245 AC_DEFUN([LIBCFS_ENABLE_CRC32_ACCEL], [
246 LB_CHECK_CONFIG_IM([CRYPTO_CRC32_PCLMUL],
247         [enable_crc32_crypto="no"], [enable_crc32_crypto="yes"])
248 AS_IF([test "x$have_crc32" = xyes -a "x$enable_crc32_crypto" = xyes], [
249         AC_DEFINE(NEED_CRC32_ACCEL, 1, [need pclmulqdq based crc32])
250         AC_MSG_WARN([No crc32 pclmulqdq crypto api found, enable internal pclmulqdq based crc32])])
251 ]) # LIBCFS_ENABLE_CRC32_ACCEL
252
253 #
254 # LIBCFS_ENABLE_CRC32C_ACCEL
255 #
256 AC_DEFUN([LIBCFS_ENABLE_CRC32C_ACCEL], [
257 LB_CHECK_CONFIG_IM([CRYPTO_CRC32C_INTEL],
258         [enable_crc32c_crypto="no"], [enable_crc32c_crypto="yes"])
259 AS_IF([test "x$enable_crc32c_crypto" = xyes], [
260         AC_DEFINE(NEED_CRC32C_ACCEL, 1, [need pclmulqdq based crc32c])
261         AC_MSG_WARN([No crc32c pclmulqdq crypto api found, enable internal pclmulqdq based crc32c])])
262 ]) # LIBCFS_ENABLE_CRC32C_ACCEL
263
264 #
265 # Kernel version 3.11 introduced ktime_get_ts64
266 #
267 AC_DEFUN([LIBCFS_KTIME_GET_TS64],[
268 LB_CHECK_COMPILE([does function 'ktime_get_ts64' exist],
269 ktime_get_ts64, [
270         #include <linux/ktime.h>
271 ],[
272         struct timespec64 *ts = NULL;
273
274         ktime_get_ts64(ts);
275 ],[
276         AC_DEFINE(HAVE_KTIME_GET_TS64, 1,
277                 ['ktime_get_ts64' is available])
278 ])
279 ]) # LIBCFS_KTIME_GET_TS64
280
281 #
282
283 #
284 # FC19 3.12 kernel struct shrinker change
285 #
286 AC_DEFUN([LIBCFS_SHRINKER_COUNT],[
287 LB_CHECK_COMPILE([shrinker has 'count_objects'],
288 shrinker_count_objects, [
289         #include <linux/mmzone.h>
290         #include <linux/shrinker.h>
291 ],[
292         ((struct shrinker*)0)->count_objects(NULL, NULL);
293 ],[
294         AC_DEFINE(HAVE_SHRINKER_COUNT, 1,
295                 [shrinker has count_objects member])
296 ])
297 ]) # LIBCFS_SHRINKER_COUNT
298
299 #
300 # Kernel version 3.17 changed hlist_add_after to
301 # hlist_add_behind
302 #
303 AC_DEFUN([LIBCFS_HLIST_ADD_AFTER],[
304 LB_CHECK_COMPILE([does function 'hlist_add_after' exist],
305 hlist_add_after, [
306         #include <linux/list.h>
307 ],[
308         hlist_add_after(NULL, NULL);
309 ],[
310         AC_DEFINE(HAVE_HLIST_ADD_AFTER, 1,
311                 [hlist_add_after is available])
312 ])
313 ]) # LIBCFS_HLIST_ADD_AFTER
314
315 #
316 # Kernel version 3.17 introduced struct timespec64
317 #
318 AC_DEFUN([LIBCFS_TIMESPEC64],[
319 LB_CHECK_COMPILE([does 'struct timespec64' exist],
320 timespec64, [
321         #include <linux/time.h>
322 ],[
323         struct timespec64 ts;
324
325         ts.tv_sec = 0;
326         ts.tv_nsec = 0;
327 ],[
328         AC_DEFINE(HAVE_TIMESPEC64, 1,
329                 ['struct timespec64' is available])
330 ])
331 ]) # LIBCFS_TIMESPEC64
332
333 #
334 # Kernel version 3.17 introduced ktime_get_real_ts64
335 #
336 AC_DEFUN([LIBCFS_KTIME_GET_REAL_TS64],[
337 LB_CHECK_COMPILE([does function 'ktime_get_real_ts64' exist],
338 ktime_get_real_ts64, [
339         #include <linux/ktime.h>
340 ],[
341         struct timespec64 *ts = NULL;
342
343         ktime_get_real_ts64(ts);
344 ],[
345         AC_DEFINE(HAVE_KTIME_GET_REAL_TS64, 1,
346                 ['ktime_get_real_ts64' is available])
347 ])
348 ]) # LIBCFS_KTIME_GET_REAL_TS64
349
350 #
351 # Kernel version 3.17 introduced ktime_get_real_seconds
352 #
353 AC_DEFUN([LIBCFS_KTIME_GET_REAL_SECONDS],[
354 LB_CHECK_COMPILE([does function 'ktime_get_real_seconds' exist],
355 ktime_get_real_seconds, [
356         #include <linux/ktime.h>
357 ],[
358         time64_t now;
359
360         now = ktime_get_real_seconds();
361 ],[
362         AC_DEFINE(HAVE_KTIME_GET_REAL_SECONDS, 1,
363                 ['ktime_get_real_seconds' is available])
364 ])
365 ]) # LIBCFS_KTIME_GET_REAL_SECONDS
366
367 #
368 # Kernel version 3.17 created ktime_get_ns wrapper
369 #
370 AC_DEFUN([LIBCFS_KTIME_GET_REAL_NS],[
371 LB_CHECK_COMPILE([does function 'ktime_get_real_ns' exist],
372 ktime_get_ns, [
373         #include <linux/ktime.h>
374 ],[
375         u64 nanoseconds;
376
377         nanoseconds = ktime_get_real_ns();
378 ],[
379         AC_DEFINE(HAVE_KTIME_GET_REAL_NS, 1,
380                 ['ktime_get_real_ns' is available])
381 ])
382 ]) # LIBCFS_KTIME_GET_REAL_NS
383
384 #
385 # Kernel version 3.19 introduced ktime_get_seconds
386 #
387 AC_DEFUN([LIBCFS_KTIME_GET_SECONDS],[
388 LB_CHECK_COMPILE([does function 'ktime_get_seconds' exist],
389 ktime_get_seconds, [
390         #include <linux/ktime.h>
391 ],[
392         time64_t now;
393
394         now = ktime_get_seconds();
395 ],[
396         AC_DEFINE(HAVE_KTIME_GET_SECONDS, 1,
397                 ['ktime_get_seconds' is available])
398 ])
399 ]) # LIBCFS_KTIME_GET_SECONDS
400
401 #
402 # Kernel version 4.2 changed topology_thread_cpumask
403 # to topology_sibling_cpumask
404 #
405 AC_DEFUN([LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
406 LB_CHECK_COMPILE([does function 'topology_sibling_cpumask' exist],
407 topology_sibling_cpumask, [
408         #include <linux/topology.h>
409 ],[
410         const struct cpumask *mask;
411
412         mask = topology_sibling_cpumask(0);
413 ],[
414         AC_DEFINE(HAVE_TOPOLOGY_SIBLING_CPUMASK, 1,
415                 [topology_sibling_cpumask is available])
416 ])
417 ]) # LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
418
419 #
420 # Kernel version 4.2 commit df6b35f409af0a8ff1ef62f552b8402f3fef8665
421 # header file i387.h was renamed to fpu/api.h
422 #
423 AC_DEFUN([LIBCFS_FPU_API], [
424 LB_CHECK_LINUX_HEADER([asm/fpu/api.h], [
425         AC_DEFINE(HAVE_FPU_API_HEADER, 1,
426                 [fpu/api.h is present])])
427 ]) # LIBCFS_FPU_API
428
429 #
430 # Kernel version 4.5-rc1 commit d12481bc58fba89427565f8592e88446ec084a24
431 # added crypto hash helpers
432 #
433 AC_DEFUN([LIBCFS_CRYPTO_HASH_HELPERS], [
434 LB_CHECK_COMPILE([does crypto hash helper functions exist],
435 crypto_hash_helpers, [
436         #include <crypto/hash.h>
437 ],[
438         crypto_ahash_alg_name(NULL);
439         crypto_ahash_driver_name(NULL);
440 ],[
441         AC_DEFINE(HAVE_CRYPTO_HASH_HELPERS, 1,
442                 [crypto hash helper functions are available])
443 ])
444 ]) # LIBCFS_CRYPTO_HASH_HELPERS
445
446 #
447 # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
448 #
449 # linux 4.6 kernel changed stacktrace_ops address to return an int
450 #
451 AC_DEFUN([LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
452 LB_CHECK_COMPILE([if 'struct stacktrace_ops' address function returns an int],
453 stacktrace_ops_address_return_int, [
454         #include <asm/stacktrace.h>
455 ],[
456         int rc;
457
458         rc = ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
459 ],[
460         AC_DEFINE(STACKTRACE_OPS_ADDRESS_RETURN_INT, 1,
461                 ['struct stacktrace_ops' address function returns an int])
462 ])
463 ]) # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
464
465 #
466 # Kernel version 4.6 removed both struct task_struct and struct mm_struct
467 # arguments to get_user_pages
468 #
469 AC_DEFUN([LIBCFS_GET_USER_PAGES_6ARG], [
470 LB_CHECK_COMPILE([if 'get_user_pages()' takes 6 arguments],
471 get_user_pages_6arg, [
472         #include <linux/mm.h>
473 ],[
474         int rc;
475
476         rc = get_user_pages(0, 0, 0, 0, NULL, NULL);
477 ],[
478         AC_DEFINE(HAVE_GET_USER_PAGES_6ARG, 1,
479                 [get_user_pages takes 6 arguments])
480 ])
481 ]) # LIBCFS_GET_USER_PAGES_6ARG
482
483 #
484 # LIBCFS_PROG_LINUX
485 #
486 # LibCFS linux kernel checks
487 #
488 AC_DEFUN([LIBCFS_PROG_LINUX], [
489 AC_MSG_NOTICE([LibCFS kernel checks
490 ==============================================================================])
491 LIBCFS_CONFIG_PANIC_DUMPLOG
492
493 # 2.6.32
494 LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
495 LC_SHRINKER_WANT_SHRINK_PTR
496 # 2.6.33
497 LIBCFS_SYSCTL_CTLNAME
498 # 2.6.38
499 LIBCFS_KSTRTOUL
500 # 2.6.39
501 LIBCFS_DUMP_TRACE_ADDRESS
502 # 2.6.40 fc15
503 LC_SHRINK_CONTROL
504 # 3.0
505 LIBCFS_STACKTRACE_WARNING
506 # 3.5
507 LIBCFS_PROCESS_NAMESPACE
508 LIBCFS_I_UID_READ
509 # 3.7
510 LIBCFS_SOCK_ALLOC_FILE
511 # 3.8
512 LIBCFS_HAVE_CRC32
513 LIBCFS_ENABLE_CRC32_ACCEL
514 # 3.10
515 LIBCFS_ENABLE_CRC32C_ACCEL
516 # 3.11
517 LIBCFS_KTIME_GET_TS64
518 # 3.12
519 LIBCFS_SHRINKER_COUNT
520 # 3.17
521 LIBCFS_HLIST_ADD_AFTER
522 LIBCFS_TIMESPEC64
523 LIBCFS_KTIME_GET_REAL_TS64
524 LIBCFS_KTIME_GET_REAL_SECONDS
525 LIBCFS_KTIME_GET_REAL_NS
526 # 3.19
527 LIBCFS_KTIME_GET_SECONDS
528 # 4.2
529 LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
530 LIBCFS_FPU_API
531 # 4.5
532 LIBCFS_CRYPTO_HASH_HELPERS
533 # 4.6
534 LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
535 LIBCFS_GET_USER_PAGES_6ARG
536 ]) # LIBCFS_PROG_LINUX
537
538 #
539 # LIBCFS_PATH_DEFAULTS
540 #
541 # default paths for installed files
542 #
543 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
544 ]) # LIBCFS_PATH_DEFAULTS
545
546 #
547 # LIBCFS_CONFIGURE
548 #
549 # other configure checks
550 #
551 AC_DEFUN([LIBCFS_CONFIGURE], [
552 AC_MSG_NOTICE([LibCFS core checks
553 ==============================================================================])
554
555 # lnet/utils/portals.c
556 AC_CHECK_HEADERS([asm/types.h endian.h sys/ioctl.h])
557
558 # lnet/utils/debug.c
559 AC_CHECK_HEADERS([linux/version.h])
560
561 AC_CHECK_TYPE([spinlock_t],
562         [AC_DEFINE(HAVE_SPINLOCK_T, 1, [spinlock_t is defined])],
563         [],
564         [#include <linux/spinlock.h>])
565
566 # lnet/utils/wirecheck.c
567 AC_CHECK_FUNCS([strnlen])
568
569 # lnet/libcfs/user-prim.c, missing for RHEL5 and earlier userspace
570 AC_CHECK_FUNCS([strlcpy])
571
572 # libcfs/libcfs/user-prim.c, missing for RHEL5 and earlier userspace
573 AC_CHECK_FUNCS([strlcat])
574
575 # libcfs/include/libcfs/linux/linux-prim.h, ...
576 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
577
578 # libcfs/include/libcfs/linux/linux-prim.h
579 AC_CHECK_HEADERS([linux/random.h], [], [],
580                  [#ifdef HAVE_LINUX_TYPES_H
581                   #include <linux/types.h>
582                   #endif
583                  ])
584
585 # libcfs/include/libcfs/linux/libcfs.h
586 # libcfs/include/libcfs/byteorder.h
587 # libcfs/libcfs/util/nidstrings.c
588 AC_CHECK_HEADERS([netdb.h asm/types.h endian.h])
589 AC_CHECK_FUNCS([gethostbyname])
590
591 # --------  Check for required packages  --------------
592
593 AC_MSG_NOTICE([LibCFS required packages checks
594 ==============================================================================])
595
596 AC_MSG_CHECKING([whether to enable readline support])
597 AC_ARG_ENABLE(readline,
598         AC_HELP_STRING([--disable-readline],
599                 [disable readline support]),
600         [], [enable_readline="yes"])
601 AC_MSG_RESULT([$enable_readline])
602
603 LIBREADLINE=""
604 AS_IF([test "x$enable_readline" = xyes], [
605         AC_CHECK_LIB([readline], [readline], [
606                 LIBREADLINE="-lreadline"
607                 AC_DEFINE(HAVE_LIBREADLINE, 1,
608                         [readline library is available])
609         ])
610 ])
611 AC_SUBST(LIBREADLINE)
612
613 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
614 AC_ARG_ENABLE([libpthread],
615         AC_HELP_STRING([--disable-libpthread],
616                 [disable libpthread]),
617         [], [enable_libpthread="yes"])
618 AC_MSG_RESULT([$enable_libpthread])
619
620 PTHREAD_LIBS=""
621 AS_IF([test "x$enable_libpthread" = xyes], [
622         AC_CHECK_LIB([pthread], [pthread_create], [
623                 PTHREAD_LIBS="-lpthread"
624                 AC_DEFINE([HAVE_LIBPTHREAD], 1,
625                         [use libpthread for libcfs library])
626         ])
627 ], [
628         AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
629 ])
630 AC_SUBST(PTHREAD_LIBS)
631 ]) # LIBCFS_CONFIGURE
632
633 #
634 # LIBCFS_CONDITIONALS
635 #
636 AC_DEFUN([LIBCFS_CONDITIONALS], [
637 AM_CONDITIONAL(HAVE_CRC32, [test "x$have_crc32" = xyes])
638 AM_CONDITIONAL(NEED_PCLMULQDQ_CRC32,  [test "x$have_crc32" = xyes -a "x$enable_crc32_crypto" = xyes])
639 AM_CONDITIONAL(NEED_PCLMULQDQ_CRC32C, [test "x$enable_crc32c_crypto" = xyes])
640 ]) # LIBCFS_CONDITIONALS
641
642 #
643 # LIBCFS_CONFIG_FILES
644 #
645 # files that should be generated with AC_OUTPUT
646 #
647 AC_DEFUN([LIBCFS_CONFIG_FILES], [
648 AC_CONFIG_FILES([
649 libcfs/Makefile
650 libcfs/autoMakefile
651 libcfs/autoconf/Makefile
652 libcfs/include/Makefile
653 libcfs/include/libcfs/Makefile
654 libcfs/include/libcfs/linux/Makefile
655 libcfs/include/libcfs/util/Makefile
656 libcfs/libcfs/Makefile
657 libcfs/libcfs/autoMakefile
658 libcfs/libcfs/linux/Makefile
659 libcfs/libcfs/util/Makefile
660 ])
661 ]) # LIBCFS_CONFIG_FILES