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_HAVE_FUTEX], [Defined when on a system with futex support.])
25 AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for use on ARM.])
26 AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
27 AH_TEMPLATE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [clock_gettime() is detected.])
28 AH_TEMPLATE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [Require the operating system to support the membarrier system call for default and bulletproof flavors.])
29 AH_TEMPLATE([CONFIG_RCU_DEBUG], [Enable internal debugging self-checks. Introduces a performance penalty.])
30 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.])
32 # Allow requiring the operating system to support the membarrier system
33 # call. Applies to default and bulletproof flavors.
34 AC_ARG_ENABLE([sys-membarrier-fallback],
35 AS_HELP_STRING([--disable-sys-membarrier-fallback], [Abort if sys-membarrier is needed but not available rather than using a fallback.]),
36 [def_sys_membarrier_fallback=$enableval],
37 [def_sys_membarrier_fallback="yes"])
38 AS_IF([test "x$def_sys_membarrier_fallback" != "xyes"], [AC_DEFINE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [1])])
40 # Allow overriding storage used for TLS variables.
41 AC_ARG_ENABLE([compiler-tls],
42 AS_HELP_STRING([--disable-compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.]),
43 [def_compiler_tls=$enableval],
44 [def_compiler_tls="yes"])
46 # Checks for C compiler
47 AC_USE_SYSTEM_EXTENSIONS
51 AS_IF([test "x$def_compiler_tls" = "xyes"], AC_DEFINE([CONFIG_RCU_TLS], [1]), [:])
53 # Checks for programs.
56 AC_CHECK_PROGS(NPROC, [nproc gnproc])
57 AC_CHECK_PROGS(GETCONF, [getconf])
58 AS_IF([test "x$NPROC" != "x"],
60 [AS_IF([test "x$GETCONF" != "x"],
61 [NPROC_CMD="$GETCONF _NPROCESSORS_ONLN"],
65 AC_SUBST([NPROC_CMD], [$NPROC_CMD])
69 # Checks for typedefs, structures, and compiler characteristics.
81 AS_IF([test "x$ax_cv___attribute__" = "xyes"],
83 [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
85 AX_PTHREAD(,[AC_MSG_ERROR([Could not configure pthreads support])])
87 AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
89 # Checks for library functions.
107 # AC_FUNC_MALLOC causes problems when cross-compiling.
119 AS_CASE([$host],[*-cygwin*],
120 [AM_CONDITIONAL(USE_CYGWIN, true)],
121 [AM_CONDITIONAL(USE_CYGWIN, false)]
124 AS_IF([test "$host_cpu" = "armv7l"],[
125 AM_CFLAGS="$AM_CFLAGS -mcpu=cortex-a9 -mtune=cortex-a9 -O1"
128 # ARM-specific checks
129 AS_CASE([$host_cpu], [arm*], [
130 AC_MSG_CHECKING([for dmb instruction])
131 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
134 asm volatile("dmb":::"memory");
140 AC_DEFINE([CONFIG_RCU_ARM_HAVE_DMB], [1])
146 # Check if sys_futex() is available
147 AC_MSG_CHECKING([for sys_futex()])
148 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
149 #include <sys/syscall.h>
151 #error "futexes not available"
156 AC_DEFINE([CONFIG_RCU_HAVE_FUTEX], [1])
163 # Search for clock_gettime
164 AC_SEARCH_LIBS([clock_gettime], [rt], [
165 AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
166 config_rcu_have_clock_gettime=yes
169 AM_CONDITIONAL([COMPAT_FUTEX], [test "x$compat_futex_test" = "x1"])
170 AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
172 # smp-support configure option
173 AC_ARG_ENABLE([smp-support],
174 AS_HELP_STRING([--disable-smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems. [default=enabled]]),
175 [def_smp_support=$enableval],
176 [def_smp_support="yes"])
177 AS_IF([test "x$def_smp_support" = "xyes"], [AC_DEFINE([CONFIG_RCU_SMP], [1])])
179 # RCU debugging option
180 AC_ARG_ENABLE([rcu-debug],
181 AS_HELP_STRING([--enable-rcu-debug], [Enable internal debugging
182 self-checks. Introduces a performance penalty.]))
183 AS_IF([test "x$enable_rcu_debug" = "xyes"], [
184 AC_DEFINE([CONFIG_RCU_DEBUG], [1])
187 # rculfhash iterator debugging
188 AC_ARG_ENABLE([cds-lfht-iter-debug],
189 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.]))
190 AS_IF([test "x$enable_cds_lfht_iter_debug" = "xyes"], [
191 AC_DEFINE([CONFIG_CDS_LFHT_ITER_DEBUG], [1])
194 # From the sched_setaffinity(2)'s man page:
196 # The CPU affinity system calls were introduced in Linux kernel 2.5.8.
197 # The library interfaces were introduced in glibc 2.3. Initially, the
198 # glibc interfaces included a cpusetsize argument. In glibc 2.3.3,
199 # the cpuset size argument was removed, but this argument was
200 # restored in glibc 2.3.4.
203 # In addition to that, some vendors ported the system call to 2.4
206 # Furthermore, when the function first appeared, the MASK argument was
207 # an unsigned long pointer, while later it was made into a cpu_set_t
208 # pointer. Systems that have the cpu_set_t version also should have
209 # the CPU_ZERO, CPU_SET, etc. macros.
211 # All this mess means we have to cater for at least 3 different
212 # sched_setaffinity prototypes:
215 # int sched_setaffinity (pid_t pid, unsigned int len, unsigned long *mask);
216 # int sched_setaffinity (pid_t __pid, size_t __cpusetsize, const cpu_set_t *__cpuset);
217 # int sched_setaffinity (pid_t __pid, const cpu_set_t *__mask);
220 AC_CHECK_TYPES([cpu_set_t],
221 [have_cpu_set_t="yes"],
222 [have_cpu_set_t="no"],
223 [#include <sched.h>])
225 # Confirm that we have CPU_ZERO, and it actually works.
226 AC_MSG_CHECKING([whether CPU_ZERO works])
227 AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works])
228 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
232 cpu_set_t foo; CPU_ZERO(&foo);
237 AC_DEFINE(HAVE_CPU_ZERO, 1)
243 # Confirm that we have CPU_SET, and it actually works.
244 AC_MSG_CHECKING([whether CPU_SET works])
245 AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works])
246 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
250 cpu_set_t foo; CPU_SET(0, &foo);
255 AC_DEFINE(HAVE_CPU_SET, 1)
261 # First check if the function is available at all.
262 AC_CHECK_FUNCS([sched_setaffinity],[
263 # Okay, we have it. Check if also have cpu_set_t. If we don't,
264 # then we have the first version using unsigned long, and no
265 # CPU_ZERO, etc. macros. If we do have cpu_set_t, we may have the
266 # version with 2 or 3 arguments. In that case, CPU_ZERO, etc.,
267 # should also be present, but we confirm nonetheless.
269 AS_IF([test "x$have_cpu_set_t" = "xyes"], [
271 # Check how many arguments does sched_setaffinity take.
273 AC_MSG_CHECKING([how many arguments sched_setaffinity takes])
274 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
279 sched_setaffinity(0, sizeof (foo), &foo);
284 [sched_set_affinity_args=3],
285 [sched_set_affinity_args=2])
286 AC_DEFINE_UNQUOTED(SCHED_SETAFFINITY_ARGS,
287 $sched_set_affinity_args,
288 [Defined to sched_setaffinity's number of arguments.])
289 AC_MSG_RESULT([$sched_set_affinity_args])
291 # No cpu_set_t, always 3 args.
292 AC_DEFINE(SCHED_SETAFFINITY_ARGS, 3)
296 AM_CPPFLAGS="-include config.h"
297 AC_SUBST(AM_CPPFLAGS)
299 AM_CFLAGS="-Wall -Wextra -Wno-unused-parameter $AM_CFLAGS"
305 doc/examples/Makefile
309 tests/common/Makefile
311 tests/benchmark/Makefile
312 tests/regression/Makefile
319 src/liburcu-signal.pc
322 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_perf_global.tap])
323 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_perf_percpu.tap])
324 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_perf_perthread.tap])
325 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_rperf_global.tap])
326 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_rperf_percpu.tap])
327 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_rperf_perthread.tap])
328 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_stress_global.tap])
329 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_stress_percpu.tap])
330 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_stress_perthread.tap])
331 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_uperf_global.tap])
332 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_uperf_percpu.tap])
333 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_uperf_perthread.tap])
334 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_perf_global.tap])
335 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_perf_percpu.tap])
336 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_perf_perthread.tap])
337 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_rperf_global.tap])
338 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_rperf_percpu.tap])
339 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_rperf_perthread.tap])
340 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_stress_global.tap])
341 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_stress_percpu.tap])
342 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_stress_perthread.tap])
343 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_uperf_global.tap])
344 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_uperf_percpu.tap])
345 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_uperf_perthread.tap])
346 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_perf_global.tap])
347 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_perf_percpu.tap])
348 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_perf_perthread.tap])
349 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_rperf_global.tap])
350 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_rperf_percpu.tap])
351 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_rperf_perthread.tap])
352 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_stress_global.tap])
353 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_stress_percpu.tap])
354 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_stress_perthread.tap])
355 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_uperf_global.tap])
356 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_uperf_percpu.tap])
357 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_uperf_perthread.tap])
358 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_perf_global.tap])
359 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_perf_percpu.tap])
360 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_perf_perthread.tap])
361 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_rperf_global.tap])
362 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_rperf_percpu.tap])
363 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_rperf_perthread.tap])
364 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_stress_global.tap])
365 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_stress_percpu.tap])
366 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_stress_perthread.tap])
367 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_uperf_global.tap])
368 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_uperf_percpu.tap])
369 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_uperf_perthread.tap])
370 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_perf_global.tap])
371 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_perf_percpu.tap])
372 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_perf_perthread.tap])
373 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_rperf_global.tap])
374 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_rperf_percpu.tap])
375 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_rperf_perthread.tap])
376 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_stress_global.tap])
377 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_stress_percpu.tap])
378 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_stress_perthread.tap])
379 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_uperf_global.tap])
380 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_uperf_percpu.tap])
381 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_uperf_perthread.tap])
387 # Mini-report on what will be built.
395 AS_ECHO("${PPRINT_COLOR_BLDBLU}Userspace-RCU $PACKAGE_VERSION${PPRINT_COLOR_RST}")
398 PPRINT_SUBTITLE([Features])
400 PPRINT_PROP_STRING([Target architecture], $host_cpu)
402 # SMP support enabled/disabled
403 test "x$def_smp_support" = "xyes" && value=1 || value=0
404 PPRINT_PROP_BOOL([SMP support], $value)
406 # Futex support available
407 test "x$compat_futex_test" = "x0" && value=1 || value=0
408 PPRINT_PROP_BOOL([Futex support], $value)
411 test "x$def_compiler_tls" = "xyes" && value="compiler TLS" || value="pthread_getspecific()"
412 PPRINT_PROP_STRING([Thread Local Storage (TLS)], [$value])
414 # clock_gettime() available
415 test "x$config_rcu_have_clock_gettime" = "xyes" && value=1 || value=0
416 PPRINT_PROP_BOOL([clock_gettime()], $value)
419 test "x$def_sys_membarrier_fallback" != "xyes" && value=1 || value=0
420 PPRINT_PROP_BOOL([Require membarrier], $value)
422 # RCU debug enabled/disabled
423 test "x$enable_rcu_debug" = "xyes" && value=1 || value=0
424 PPRINT_PROP_BOOL([Internal debugging], $value)
426 # rculfhash iterator debug enabled/disabled
427 test "x$enable_cds_lfht_iter_debug" = "xyes" && value=1 || value=0
428 PPRINT_PROP_BOOL([Lock-free hash table iterator debugging], $value)
430 PPRINT_PROP_BOOL([Multi-flavor support], 1)
432 report_bindir="`eval eval echo $bindir`"
433 report_libdir="`eval eval echo $libdir`"
435 # Print the bindir and libdir this `make install' will install into.
437 PPRINT_SUBTITLE([Install directories])
438 PPRINT_PROP_STRING([Binaries], [$report_bindir])
439 PPRINT_PROP_STRING([Libraries], [$report_libdir])