4 # whether to enable various libcfs debugs (CDEBUG, ENTRY/EXIT, LASSERT, etc.)
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])])
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])])
33 ]) # LIBCFS_CONFIG_CDEBUG
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_STACKTRACE_OPS_HAVE_WALK_STACK
54 # 2.6.32-30.el6 adds a new 'walk_stack' field in 'struct stacktrace_ops'
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>
61 ((struct stacktrace_ops *)0)->walk_stack(NULL, NULL, 0, NULL, NULL, NULL, NULL);
63 AC_DEFINE(STACKTRACE_OPS_HAVE_WALK_STACK, 1,
64 ['struct stacktrace_ops' has 'walk_stack' field])
66 ]) # LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
69 # LIBCFS_STACKTRACE_WARNING
71 # 3.0 removes stacktrace_ops warning* functions
73 AC_DEFUN([LIBCFS_STACKTRACE_WARNING], [
74 LB_CHECK_COMPILE([if 'stacktrace_ops.warning' is exist],
75 stacktrace_ops_warning, [
78 #include <asm/stacktrace.h>
80 ((struct stacktrace_ops *)0)->warning(NULL, NULL);
82 AC_DEFINE(HAVE_STACKTRACE_WARNING, 1,
83 [stacktrace_ops.warning is exist])
85 ]) # LIBCFS_STACKTRACE_WARNING
88 # LC_SHRINKER_WANT_SHRINK_PTR
90 # RHEL6/2.6.32 want to have pointer to shrinker self pointer in handler function
92 AC_DEFUN([LC_SHRINKER_WANT_SHRINK_PTR], [
93 LB_CHECK_COMPILE([if 'shrinker' want self pointer in handler],
94 shrink_self_pointer, [
97 struct shrinker *tmp = NULL;
98 tmp->shrink(tmp, 0, 0);
100 AC_DEFINE(HAVE_SHRINKER_WANT_SHRINK_PTR, 1,
101 [shrinker want self pointer in handler])
103 ]) # LC_SHRINKER_WANT_SHRINK_PTR
106 # LIBCFS_SYSCTL_CTLNAME
108 # 2.6.33 no longer has ctl_name & strategy field in struct ctl_table.
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>
116 ct.ctl_name = sizeof(ct);
118 AC_DEFINE(HAVE_SYSCTL_CTLNAME, 1,
119 [ctl_table has ctl_name field])
121 ]) # LIBCFS_SYSCTL_CTLNAME
126 # 2.6.38 kstrtoul is added
128 AC_DEFUN([LIBCFS_KSTRTOUL], [
129 LB_CHECK_COMPILE([if Linux kernel has 'kstrtoul'],
131 #include <linux/kernel.h>
133 unsigned long result;
134 return kstrtoul("12345", 0, &result);
136 AC_DEFINE(HAVE_KSTRTOUL, 1,
137 [kernel has kstrtoul])
142 # LIBCFS_DUMP_TRACE_ADDRESS
144 # 2.6.39 adds a base pointer address argument to dump_trace
146 AC_DEFUN([LIBCFS_DUMP_TRACE_ADDRESS], [
147 LB_CHECK_COMPILE([if 'dump_trace' want address],
148 dump_trace_address, [
151 #include <asm/stacktrace.h>
153 dump_trace(NULL, NULL, NULL, 0, NULL, NULL);
155 AC_DEFINE(HAVE_DUMP_TRACE_ADDRESS, 1,
156 [dump_trace want address argument])
158 ]) # LIBCFS_DUMP_TRACE_ADDRESS
163 # FC15 2.6.40-5 backported the "shrink_control" parameter to the memory
164 # pressure shrinker from Linux 3.0
166 AC_DEFUN([LC_SHRINK_CONTROL], [
167 LB_CHECK_COMPILE([if 'shrink_control' is present],
169 #include <linux/atomic.h>
170 #include <linux/mm.h>
172 struct shrink_control tmp = {0};
173 tmp.nr_to_scan = sizeof(tmp);
175 AC_DEFINE(HAVE_SHRINK_CONTROL, 1,
176 [shrink_control is present])
178 ]) # LC_SHRINK_CONTROL
181 # LIBCFS_PROCESS_NAMESPACE
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
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
196 AC_DEFUN([LIBCFS_I_UID_READ], [
197 LB_CHECK_COMPILE([if 'i_uid_read' is present],
199 #include <linux/fs.h>
203 AC_DEFINE(HAVE_I_UID_READ, 1, [i_uid_read is present])
205 ]) # LIBCFS_I_UID_READ
208 # LIBCFS_SOCK_ALLOC_FILE
210 # FC18 3.7.2-201 unexport sock_map_fd() change to
211 # use sock_alloc_file().
212 # upstream commit 56b31d1c9f1e6a3ad92e7bfe252721e05d92b285
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>
220 sock_alloc_file(NULL, 0, NULL);
222 AC_DEFINE(HAVE_SOCK_ALLOC_FILE_3ARGS, 1,
223 [sock_alloc_file takes 3 arguments])
225 AC_DEFINE(HAVE_SOCK_ALLOC_FILE, 1,
226 [sock_alloc_file is exported])
229 ]) # LIBCFS_SOCK_ALLOC_FILE
234 AC_DEFUN([LIBCFS_HAVE_CRC32], [
235 LB_CHECK_CONFIG_IM([CRC32],
236 [have_crc32="yes"], [have_crc32="no"])
237 AS_IF([test "x$have_crc32" = xyes],
238 [AC_DEFINE(HAVE_CRC32, 1,
239 [kernel compiled with CRC32 functions])])
240 ]) # LIBCFS_HAVE_CRC32
243 # LIBCFS_ENABLE_CRC32_ACCEL
245 AC_DEFUN([LIBCFS_ENABLE_CRC32_ACCEL], [
246 LB_CHECK_CONFIG_IM([CRYPTO_CRC32_PCLMUL],
247 [enable_crc32_crypto="no"], [enable_crc32_crypto="yes"])
248 AS_IF([test "x$have_crc32" = xyes -a "x$enable_crc32_crypto" = xyes], [
249 AC_DEFINE(NEED_CRC32_ACCEL, 1, [need pclmulqdq based crc32])
250 AC_MSG_WARN([No crc32 pclmulqdq crypto api found, enable internal pclmulqdq based crc32])])
251 ]) # LIBCFS_ENABLE_CRC32_ACCEL
254 # LIBCFS_ENABLE_CRC32C_ACCEL
256 AC_DEFUN([LIBCFS_ENABLE_CRC32C_ACCEL], [
257 LB_CHECK_CONFIG_IM([CRYPTO_CRC32C_INTEL],
258 [enable_crc32c_crypto="no"], [enable_crc32c_crypto="yes"])
259 AS_IF([test "x$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
265 # FC19 3.12 kernel struct shrinker change
267 AC_DEFUN([LIBCFS_SHRINKER_COUNT],[
268 LB_CHECK_COMPILE([shrinker has 'count_objects'],
269 shrinker_count_objects, [
270 #include <linux/mmzone.h>
271 #include <linux/shrinker.h>
273 ((struct shrinker*)0)->count_objects(NULL, NULL);
275 AC_DEFINE(HAVE_SHRINKER_COUNT, 1,
276 [shrinker has count_objects member])
278 ]) # LIBCFS_SHRINKER_COUNT
281 # Kernel version 3.17 changed hlist_add_after to
284 AC_DEFUN([LIBCFS_HLIST_ADD_AFTER],[
285 LB_CHECK_COMPILE([does function 'hlist_add_after' exist],
287 #include <linux/list.h>
289 hlist_add_after(NULL, NULL);
291 AC_DEFINE(HAVE_HLIST_ADD_AFTER, 1,
292 [hlist_add_after is available])
294 ]) # LIBCFS_HLIST_ADD_AFTER
297 # Kernel version 4.2 changed topology_thread_cpumask
298 # to topology_sibling_cpumask
300 AC_DEFUN([LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
301 LB_CHECK_COMPILE([does function 'topology_sibling_cpumask' exist],
302 topology_sibling_cpumask, [
303 #include <linux/topology.h>
305 const struct cpumask *mask;
307 mask = topology_sibling_cpumask(0);
309 AC_DEFINE(HAVE_TOPOLOGY_SIBLING_CPUMASK, 1,
310 [topology_sibling_cpumask is available])
312 ]) # LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
315 # Kernel version 4.2 commit df6b35f409af0a8ff1ef62f552b8402f3fef8665
316 # header file i387.h was renamed to fpu/api.h
318 AC_DEFUN([LIBCFS_FPU_API], [
319 LB_CHECK_LINUX_HEADER([asm/fpu/api.h], [
320 AC_DEFINE(HAVE_FPU_API_HEADER, 1,
321 [fpu/api.h is present])])
327 # LibCFS linux kernel checks
329 AC_DEFUN([LIBCFS_PROG_LINUX], [
330 AC_MSG_NOTICE([LibCFS kernel checks
331 ==============================================================================])
332 LIBCFS_CONFIG_PANIC_DUMPLOG
335 LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
336 LC_SHRINKER_WANT_SHRINK_PTR
338 LIBCFS_SYSCTL_CTLNAME
342 LIBCFS_DUMP_TRACE_ADDRESS
346 LIBCFS_STACKTRACE_WARNING
348 LIBCFS_PROCESS_NAMESPACE
351 LIBCFS_SOCK_ALLOC_FILE
354 LIBCFS_ENABLE_CRC32_ACCEL
356 LIBCFS_ENABLE_CRC32C_ACCEL
358 LIBCFS_SHRINKER_COUNT
360 LIBCFS_HLIST_ADD_AFTER
362 LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
364 ]) # LIBCFS_PROG_LINUX
367 # LIBCFS_PATH_DEFAULTS
369 # default paths for installed files
371 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
372 ]) # LIBCFS_PATH_DEFAULTS
377 # other configure checks
379 AC_DEFUN([LIBCFS_CONFIGURE], [
380 AC_MSG_NOTICE([LibCFS core checks
381 ==============================================================================])
383 # lnet/utils/portals.c
384 AC_CHECK_HEADERS([asm/types.h endian.h sys/ioctl.h])
387 AC_CHECK_HEADERS([linux/version.h])
389 AC_CHECK_TYPE([spinlock_t],
390 [AC_DEFINE(HAVE_SPINLOCK_T, 1, [spinlock_t is defined])],
392 [#include <linux/spinlock.h>])
394 # lnet/utils/wirecheck.c
395 AC_CHECK_FUNCS([strnlen])
397 # lnet/libcfs/user-prim.c, missing for RHEL5 and earlier userspace
398 AC_CHECK_FUNCS([strlcpy])
400 # libcfs/libcfs/user-prim.c, missing for RHEL5 and earlier userspace
401 AC_CHECK_FUNCS([strlcat])
403 # libcfs/include/libcfs/linux/linux-prim.h, ...
404 AC_CHECK_HEADERS([linux/types.h sys/types.h linux/unistd.h unistd.h])
406 # libcfs/include/libcfs/linux/linux-prim.h
407 AC_CHECK_HEADERS([linux/random.h], [], [],
408 [#ifdef HAVE_LINUX_TYPES_H
409 #include <linux/types.h>
413 # libcfs/include/libcfs/linux/libcfs.h
414 # libcfs/include/libcfs/byteorder.h
415 # libcfs/libcfs/util/nidstrings.c
416 AC_CHECK_HEADERS([netdb.h asm/types.h endian.h])
417 AC_CHECK_FUNCS([gethostbyname])
419 # -------- Check for required packages --------------
421 AC_MSG_NOTICE([LibCFS required packages checks
422 ==============================================================================])
424 AC_MSG_CHECKING([whether to enable readline support])
425 AC_ARG_ENABLE(readline,
426 AC_HELP_STRING([--disable-readline],
427 [disable readline support]),
428 [], [enable_readline="yes"])
429 AC_MSG_RESULT([$enable_readline])
432 AS_IF([test "x$enable_readline" = xyes], [
433 AC_CHECK_LIB([readline], [readline], [
434 LIBREADLINE="-lreadline"
435 AC_DEFINE(HAVE_LIBREADLINE, 1,
436 [readline library is available])
439 AC_SUBST(LIBREADLINE)
441 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
442 AC_ARG_ENABLE([libpthread],
443 AC_HELP_STRING([--disable-libpthread],
444 [disable libpthread]),
445 [], [enable_libpthread="yes"])
446 AC_MSG_RESULT([$enable_libpthread])
449 AS_IF([test "x$enable_libpthread" = xyes], [
450 AC_CHECK_LIB([pthread], [pthread_create], [
451 PTHREAD_LIBS="-lpthread"
452 AC_DEFINE([HAVE_LIBPTHREAD], 1,
453 [use libpthread for libcfs library])
456 AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
458 AC_SUBST(PTHREAD_LIBS)
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], [
479 libcfs/autoconf/Makefile
480 libcfs/include/Makefile
481 libcfs/include/libcfs/Makefile
482 libcfs/include/libcfs/linux/Makefile
483 libcfs/include/libcfs/util/Makefile
484 libcfs/libcfs/Makefile
485 libcfs/libcfs/autoMakefile
486 libcfs/libcfs/linux/Makefile
487 libcfs/libcfs/util/Makefile
489 ]) # LIBCFS_CONFIG_FILES