2 AC_INIT([userspace-rcu],[0.12.0],[mathieu dot desnoyers at efficios dot com], [], [http://liburcu.org/])
4 # Following the numbering scheme proposed by libtool for the library version
5 # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
6 AC_SUBST([URCU_LIBRARY_VERSION], [7:0:1])
8 AC_CONFIG_HEADERS([include/config.h include/urcu/config.h])
9 AC_CONFIG_AUX_DIR([config])
10 AC_CONFIG_MACRO_DIR([m4])
15 AM_INIT_AUTOMAKE([1.12 foreign dist-bzip2 no-dist-gzip nostdinc])
16 AM_MAINTAINER_MODE([enable])
18 # Enable silent rules if available (Introduced in AM 1.11)
19 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
21 AC_REQUIRE_AUX_FILE([tap-driver.sh])
23 AH_TEMPLATE([CONFIG_RCU_SMP], [Enable SMP support. With SMP support enabled, uniprocessors are also supported. With SMP support disabled, UP systems work fine, but the behavior of SMP systems is undefined.])
24 AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for use on ARM.])
25 AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
26 AH_TEMPLATE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [clock_gettime() is detected.])
27 AH_TEMPLATE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [Require the operating system to support the membarrier system call for default and bulletproof flavors.])
28 AH_TEMPLATE([CONFIG_RCU_DEBUG], [Enable internal debugging self-checks. Introduces a performance penalty.])
29 AH_TEMPLATE([CONFIG_CDS_LFHT_ITER_DEBUG], [Enable extra debugging checks for lock-free hash table iterator traversal. Alters the rculfhash ABI. Make sure to compile both library and application with matching configuration.])
31 # Allow requiring the operating system to support the membarrier system
32 # call. Applies to default and bulletproof flavors.
33 AC_ARG_ENABLE([sys-membarrier-fallback],
34 AS_HELP_STRING([--disable-sys-membarrier-fallback], [Abort if sys-membarrier is needed but not available rather than using a fallback.]),
35 [def_sys_membarrier_fallback=$enableval],
36 [def_sys_membarrier_fallback="yes"])
37 AS_IF([test "x$def_sys_membarrier_fallback" != "xyes"], [AC_DEFINE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [1])])
39 # Allow overriding storage used for TLS variables.
40 AC_ARG_ENABLE([compiler-tls],
41 AS_HELP_STRING([--disable-compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.]),
42 [def_compiler_tls=$enableval],
43 [def_compiler_tls="yes"])
45 # Checks for C compiler
46 AC_USE_SYSTEM_EXTENSIONS
50 AS_IF([test "x$def_compiler_tls" = "xyes"], AC_DEFINE([CONFIG_RCU_TLS], [1]), [:])
52 # Checks for programs.
55 AC_CHECK_PROGS(NPROC, [nproc gnproc])
56 AC_CHECK_PROGS(GETCONF, [getconf])
57 AS_IF([test "x$NPROC" != "x"],
59 [AS_IF([test "x$GETCONF" != "x"],
60 [NPROC_CMD="$GETCONF _NPROCESSORS_ONLN"],
64 AC_SUBST([NPROC_CMD], [$NPROC_CMD])
68 # Checks for typedefs, structures, and compiler characteristics.
80 AS_IF([test "x$ax_cv___attribute__" = "xyes"],
82 [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
84 AX_PTHREAD(,[AC_MSG_ERROR([Could not configure pthreads support])])
86 AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
88 # Checks for library functions.
106 # AC_FUNC_MALLOC causes problems when cross-compiling.
118 AS_CASE([$host],[*-cygwin*],
119 [AM_CONDITIONAL(USE_CYGWIN, true)],
120 [AM_CONDITIONAL(USE_CYGWIN, false)]
123 AS_IF([test "$host_cpu" = "armv7l"],[
124 AM_CFLAGS="$AM_CFLAGS -mcpu=cortex-a9 -mtune=cortex-a9 -O1"
127 # ARM-specific checks
128 AS_CASE([$host_cpu], [arm*], [
129 AC_MSG_CHECKING([for dmb instruction])
130 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
133 asm volatile("dmb":::"memory");
139 AC_DEFINE([CONFIG_RCU_ARM_HAVE_DMB], [1])
145 # Search for clock_gettime
146 AC_SEARCH_LIBS([clock_gettime], [rt], [
147 AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
148 config_rcu_have_clock_gettime=yes
151 AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
153 # smp-support configure option
154 AC_ARG_ENABLE([smp-support],
155 AS_HELP_STRING([--disable-smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems. [default=enabled]]),
156 [def_smp_support=$enableval],
157 [def_smp_support="yes"])
158 AS_IF([test "x$def_smp_support" = "xyes"], [AC_DEFINE([CONFIG_RCU_SMP], [1])])
160 # RCU debugging option
161 AC_ARG_ENABLE([rcu-debug],
162 AS_HELP_STRING([--enable-rcu-debug], [Enable internal debugging
163 self-checks. Introduces a performance penalty.]))
164 AS_IF([test "x$enable_rcu_debug" = "xyes"], [
165 AC_DEFINE([CONFIG_RCU_DEBUG], [1])
168 # rculfhash iterator debugging
169 AC_ARG_ENABLE([cds-lfht-iter-debug],
170 AS_HELP_STRING([--enable-cds-lfht-iter-debug], [Enable extra debugging checks for lock-free hash table iterator traversal. Alters the rculfhash ABI. Make sure to compile both library and application with matching configuration.]))
171 AS_IF([test "x$enable_cds_lfht_iter_debug" = "xyes"], [
172 AC_DEFINE([CONFIG_CDS_LFHT_ITER_DEBUG], [1])
175 # From the sched_setaffinity(2)'s man page:
177 # The CPU affinity system calls were introduced in Linux kernel 2.5.8.
178 # The library interfaces were introduced in glibc 2.3. Initially, the
179 # glibc interfaces included a cpusetsize argument. In glibc 2.3.3,
180 # the cpuset size argument was removed, but this argument was
181 # restored in glibc 2.3.4.
184 # In addition to that, some vendors ported the system call to 2.4
187 # Furthermore, when the function first appeared, the MASK argument was
188 # an unsigned long pointer, while later it was made into a cpu_set_t
189 # pointer. Systems that have the cpu_set_t version also should have
190 # the CPU_ZERO, CPU_SET, etc. macros.
192 # All this mess means we have to cater for at least 3 different
193 # sched_setaffinity prototypes:
196 # int sched_setaffinity (pid_t pid, unsigned int len, unsigned long *mask);
197 # int sched_setaffinity (pid_t __pid, size_t __cpusetsize, const cpu_set_t *__cpuset);
198 # int sched_setaffinity (pid_t __pid, const cpu_set_t *__mask);
201 AC_CHECK_TYPES([cpu_set_t],
202 [have_cpu_set_t="yes"],
203 [have_cpu_set_t="no"],
204 [#include <sched.h>])
206 # Confirm that we have CPU_ZERO, and it actually works.
207 AC_MSG_CHECKING([whether CPU_ZERO works])
208 AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works])
209 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
213 cpu_set_t foo; CPU_ZERO(&foo);
218 AC_DEFINE(HAVE_CPU_ZERO, 1)
224 # Confirm that we have CPU_SET, and it actually works.
225 AC_MSG_CHECKING([whether CPU_SET works])
226 AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works])
227 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
231 cpu_set_t foo; CPU_SET(0, &foo);
236 AC_DEFINE(HAVE_CPU_SET, 1)
242 # First check if the function is available at all.
243 AC_CHECK_FUNCS([sched_setaffinity],[
244 # Okay, we have it. Check if also have cpu_set_t. If we don't,
245 # then we have the first version using unsigned long, and no
246 # CPU_ZERO, etc. macros. If we do have cpu_set_t, we may have the
247 # version with 2 or 3 arguments. In that case, CPU_ZERO, etc.,
248 # should also be present, but we confirm nonetheless.
250 AS_IF([test "x$have_cpu_set_t" = "xyes"], [
252 # Check how many arguments does sched_setaffinity take.
254 AC_MSG_CHECKING([how many arguments sched_setaffinity takes])
255 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
260 sched_setaffinity(0, sizeof (foo), &foo);
265 [sched_set_affinity_args=3],
266 [sched_set_affinity_args=2])
267 AC_DEFINE_UNQUOTED(SCHED_SETAFFINITY_ARGS,
268 $sched_set_affinity_args,
269 [Defined to sched_setaffinity's number of arguments.])
270 AC_MSG_RESULT([$sched_set_affinity_args])
272 # No cpu_set_t, always 3 args.
273 AC_DEFINE(SCHED_SETAFFINITY_ARGS, 3)
277 AM_CPPFLAGS="-include config.h"
278 AC_SUBST(AM_CPPFLAGS)
280 AM_CFLAGS="-Wall -Wextra -Wno-unused-parameter $AM_CFLAGS"
286 doc/examples/Makefile
290 tests/common/Makefile
292 tests/benchmark/Makefile
293 tests/regression/Makefile
300 src/liburcu-signal.pc
303 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_perf_global.tap])
304 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_perf_percpu.tap])
305 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_perf_perthread.tap])
306 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_rperf_global.tap])
307 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_rperf_percpu.tap])
308 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_rperf_perthread.tap])
309 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_stress_global.tap])
310 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_stress_percpu.tap])
311 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_stress_perthread.tap])
312 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_uperf_global.tap])
313 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_uperf_percpu.tap])
314 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_uperf_perthread.tap])
315 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_perf_global.tap])
316 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_perf_percpu.tap])
317 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_perf_perthread.tap])
318 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_rperf_global.tap])
319 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_rperf_percpu.tap])
320 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_rperf_perthread.tap])
321 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_stress_global.tap])
322 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_stress_percpu.tap])
323 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_stress_perthread.tap])
324 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_uperf_global.tap])
325 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_uperf_percpu.tap])
326 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_uperf_perthread.tap])
327 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_perf_global.tap])
328 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_perf_percpu.tap])
329 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_perf_perthread.tap])
330 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_rperf_global.tap])
331 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_rperf_percpu.tap])
332 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_rperf_perthread.tap])
333 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_stress_global.tap])
334 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_stress_percpu.tap])
335 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_stress_perthread.tap])
336 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_uperf_global.tap])
337 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_uperf_percpu.tap])
338 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_uperf_perthread.tap])
339 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_perf_global.tap])
340 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_perf_percpu.tap])
341 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_perf_perthread.tap])
342 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_rperf_global.tap])
343 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_rperf_percpu.tap])
344 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_rperf_perthread.tap])
345 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_stress_global.tap])
346 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_stress_percpu.tap])
347 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_stress_perthread.tap])
348 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_uperf_global.tap])
349 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_uperf_percpu.tap])
350 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_uperf_perthread.tap])
351 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_perf_global.tap])
352 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_perf_percpu.tap])
353 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_perf_perthread.tap])
354 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_rperf_global.tap])
355 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_rperf_percpu.tap])
356 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_rperf_perthread.tap])
357 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_stress_global.tap])
358 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_stress_percpu.tap])
359 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_stress_perthread.tap])
360 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_uperf_global.tap])
361 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_uperf_percpu.tap])
362 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_uperf_perthread.tap])
368 # Mini-report on what will be built.
376 AS_ECHO("${PPRINT_COLOR_BLDBLU}Userspace-RCU $PACKAGE_VERSION${PPRINT_COLOR_RST}")
379 PPRINT_SUBTITLE([Features])
381 PPRINT_PROP_STRING([Target architecture], $host_cpu)
383 # SMP support enabled/disabled
384 test "x$def_smp_support" = "xyes" && value=1 || value=0
385 PPRINT_PROP_BOOL([SMP support], $value)
388 test "x$def_compiler_tls" = "xyes" && value="compiler TLS" || value="pthread_getspecific()"
389 PPRINT_PROP_STRING([Thread Local Storage (TLS)], [$value])
391 # clock_gettime() available
392 test "x$config_rcu_have_clock_gettime" = "xyes" && value=1 || value=0
393 PPRINT_PROP_BOOL([clock_gettime()], $value)
396 test "x$def_sys_membarrier_fallback" != "xyes" && value=1 || value=0
397 PPRINT_PROP_BOOL([Require membarrier], $value)
399 # RCU debug enabled/disabled
400 test "x$enable_rcu_debug" = "xyes" && value=1 || value=0
401 PPRINT_PROP_BOOL([Internal debugging], $value)
403 # rculfhash iterator debug enabled/disabled
404 test "x$enable_cds_lfht_iter_debug" = "xyes" && value=1 || value=0
405 PPRINT_PROP_BOOL([Lock-free hash table iterator debugging], $value)
407 PPRINT_PROP_BOOL([Multi-flavor support], 1)
409 report_bindir="`eval eval echo $bindir`"
410 report_libdir="`eval eval echo $libdir`"
412 # Print the bindir and libdir this `make install' will install into.
414 PPRINT_SUBTITLE([Install directories])
415 PPRINT_PROP_STRING([Binaries], [$report_bindir])
416 PPRINT_PROP_STRING([Libraries], [$report_libdir])