1 dnl SPDX-License-Identifier: LGPL-2.1-only
3 dnl Copyright (C) 2021 EfficiOS, Inc.
5 dnl Process this file with autoconf to produce a configure script.
7 # Project version information
8 m4_define([urcu_version_major], [0])
9 m4_define([urcu_version_minor], [12])
10 m4_define([urcu_version_patch], [0])
11 m4_define([urcu_version_dev_stage], [])
12 m4_define([urcu_version], urcu_version_major[.]urcu_version_minor[.]urcu_version_patch[]urcu_version_dev_stage)
14 # Library version information of "liburcu"
15 # Following the numbering scheme proposed by libtool for the library version
16 # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
17 m4_define([urcu_lib_version_current], [7])
18 m4_define([urcu_lib_version_revision], [0])
19 m4_define([urcu_lib_version_age], [1])
20 m4_define([urcu_lib_version], urcu_lib_version_current[:]urcu_lib_version_revision[:]urcu_lib_version_age)
24 ## Autoconf base setup ##
28 AC_INIT([userspace-rcu],[urcu_version],[mathieu dot desnoyers at efficios dot com],[],[http://liburcu.org/])
30 AC_CONFIG_HEADERS([include/config.h include/urcu/config.h])
31 AC_CONFIG_AUX_DIR([config])
32 AC_CONFIG_MACRO_DIR([m4])
37 AM_INIT_AUTOMAKE([1.12 foreign dist-bzip2 no-dist-gzip nostdinc])
38 AM_MAINTAINER_MODE([enable])
40 # Enable silent rules if available (Introduced in AM 1.11)
41 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
43 AC_REQUIRE_AUX_FILE([tap-driver.sh])
45 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.])
46 AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
47 AH_TEMPLATE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [clock_gettime() is detected.])
48 AH_TEMPLATE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [Require the operating system to support the membarrier system call for default and bulletproof flavors.])
49 AH_TEMPLATE([CONFIG_RCU_DEBUG], [Enable internal debugging self-checks. Introduces a performance penalty.])
50 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.])
52 # Allow requiring the operating system to support the membarrier system
53 # call. Applies to default and bulletproof flavors.
54 AC_ARG_ENABLE([sys-membarrier-fallback],
55 AS_HELP_STRING([--disable-sys-membarrier-fallback], [Abort if sys-membarrier is needed but not available rather than using a fallback.]),
56 [def_sys_membarrier_fallback=$enableval],
57 [def_sys_membarrier_fallback="yes"])
58 AS_IF([test "x$def_sys_membarrier_fallback" != "xyes"], [AC_DEFINE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [1])])
60 # Allow overriding storage used for TLS variables.
61 AC_ARG_ENABLE([compiler-tls],
62 AS_HELP_STRING([--disable-compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.]),
63 [def_compiler_tls=$enableval],
64 [def_compiler_tls="yes"])
66 # Checks for C compiler
67 AC_USE_SYSTEM_EXTENSIONS
69 # AC_PROG_CC_STDC was merged in AC_PROG_CC in autoconf 2.70
70 m4_version_prereq([2.70], [], [AC_PROG_CC_STDC])
71 AS_IF([test "x$def_compiler_tls" = "xyes"], AC_DEFINE([CONFIG_RCU_TLS], [1]), [:])
73 # Checks for programs.
76 AC_CHECK_PROGS(NPROC, [nproc gnproc])
77 AC_CHECK_PROGS(GETCONF, [getconf])
78 AS_IF([test "x$NPROC" != "x"],
80 [AS_IF([test "x$GETCONF" != "x"],
81 [NPROC_CMD="$GETCONF _NPROCESSORS_ONLN"],
85 AC_SUBST([NPROC_CMD], [$NPROC_CMD])
89 # Checks for typedefs, structures, and compiler characteristics.
101 AS_IF([test "x$ax_cv___attribute__" = "xyes"],
103 [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
105 AX_PTHREAD(,[AC_MSG_ERROR([Could not configure pthreads support])])
107 AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
109 # Checks for library functions.
127 # AC_FUNC_MALLOC causes problems when cross-compiling.
139 AS_CASE([$host],[*-cygwin*],
140 [AM_CONDITIONAL(USE_CYGWIN, true)],
141 [AM_CONDITIONAL(USE_CYGWIN, false)]
144 # Search for clock_gettime
145 AC_SEARCH_LIBS([clock_gettime], [rt], [
146 AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
147 config_rcu_have_clock_gettime=yes
150 AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
152 # smp-support configure option
153 AC_ARG_ENABLE([smp-support],
154 AS_HELP_STRING([--disable-smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems. [default=enabled]]),
155 [def_smp_support=$enableval],
156 [def_smp_support="yes"])
157 AS_IF([test "x$def_smp_support" = "xyes"], [AC_DEFINE([CONFIG_RCU_SMP], [1])])
159 # RCU debugging option
160 AC_ARG_ENABLE([rcu-debug],
161 AS_HELP_STRING([--enable-rcu-debug], [Enable internal debugging
162 self-checks. Introduces a performance penalty.]))
163 AS_IF([test "x$enable_rcu_debug" = "xyes"], [
164 AC_DEFINE([CONFIG_RCU_DEBUG], [1])
167 # rculfhash iterator debugging
168 AC_ARG_ENABLE([cds-lfht-iter-debug],
169 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.]))
170 AS_IF([test "x$enable_cds_lfht_iter_debug" = "xyes"], [
171 AC_DEFINE([CONFIG_CDS_LFHT_ITER_DEBUG], [1])
174 # From the sched_setaffinity(2)'s man page:
176 # The CPU affinity system calls were introduced in Linux kernel 2.5.8.
177 # The library interfaces were introduced in glibc 2.3. Initially, the
178 # glibc interfaces included a cpusetsize argument. In glibc 2.3.3,
179 # the cpuset size argument was removed, but this argument was
180 # restored in glibc 2.3.4.
183 # In addition to that, some vendors ported the system call to 2.4
186 # Furthermore, when the function first appeared, the MASK argument was
187 # an unsigned long pointer, while later it was made into a cpu_set_t
188 # pointer. Systems that have the cpu_set_t version also should have
189 # the CPU_ZERO, CPU_SET, etc. macros.
191 # All this mess means we have to cater for at least 3 different
192 # sched_setaffinity prototypes:
195 # int sched_setaffinity (pid_t pid, unsigned int len, unsigned long *mask);
196 # int sched_setaffinity (pid_t __pid, size_t __cpusetsize, const cpu_set_t *__cpuset);
197 # int sched_setaffinity (pid_t __pid, const cpu_set_t *__mask);
200 AC_CHECK_TYPES([cpu_set_t],
201 [have_cpu_set_t="yes"],
202 [have_cpu_set_t="no"],
203 [#include <sched.h>])
205 # Confirm that we have CPU_ZERO, and it actually works.
206 AC_MSG_CHECKING([whether CPU_ZERO works])
207 AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works])
208 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
212 cpu_set_t foo; CPU_ZERO(&foo);
217 AC_DEFINE(HAVE_CPU_ZERO, 1)
223 # Confirm that we have CPU_SET, and it actually works.
224 AC_MSG_CHECKING([whether CPU_SET works])
225 AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works])
226 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
230 cpu_set_t foo; CPU_SET(0, &foo);
235 AC_DEFINE(HAVE_CPU_SET, 1)
241 # First check if the function is available at all.
242 AC_CHECK_FUNCS([sched_setaffinity],[
243 # Okay, we have it. Check if also have cpu_set_t. If we don't,
244 # then we have the first version using unsigned long, and no
245 # CPU_ZERO, etc. macros. If we do have cpu_set_t, we may have the
246 # version with 2 or 3 arguments. In that case, CPU_ZERO, etc.,
247 # should also be present, but we confirm nonetheless.
249 AS_IF([test "x$have_cpu_set_t" = "xyes"], [
251 # Check how many arguments does sched_setaffinity take.
253 AC_MSG_CHECKING([how many arguments sched_setaffinity takes])
254 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
259 sched_setaffinity(0, sizeof (foo), &foo);
264 [sched_set_affinity_args=3],
265 [sched_set_affinity_args=2])
266 AC_DEFINE_UNQUOTED(SCHED_SETAFFINITY_ARGS,
267 $sched_set_affinity_args,
268 [Defined to sched_setaffinity's number of arguments.])
269 AC_MSG_RESULT([$sched_set_affinity_args])
271 # No cpu_set_t, always 3 args.
272 AC_DEFINE(SCHED_SETAFFINITY_ARGS, 3)
277 ## Substitute variables for use in Makefile.am ##
280 # Library versions for libtool
281 AC_SUBST([URCU_LIBRARY_VERSION], [urcu_lib_version])
283 AM_CPPFLAGS="-include config.h"
284 AC_SUBST(AM_CPPFLAGS)
286 AM_CFLAGS="-Wall -Wextra -Wno-unused-parameter $AM_CFLAGS"
292 doc/examples/Makefile
296 tests/common/Makefile
298 tests/benchmark/Makefile
299 tests/regression/Makefile
306 src/liburcu-signal.pc
309 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_perf_global.tap])
310 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_perf_percpu.tap])
311 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_perf_perthread.tap])
312 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_rperf_global.tap])
313 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_rperf_percpu.tap])
314 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_rperf_perthread.tap])
315 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_stress_global.tap])
316 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_stress_percpu.tap])
317 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_stress_perthread.tap])
318 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_bp_uperf_global.tap])
319 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_bp_uperf_percpu.tap])
320 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_bp_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_bp_uperf_perthread.tap])
321 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_perf_global.tap])
322 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_perf_percpu.tap])
323 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_perf_perthread.tap])
324 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_rperf_global.tap])
325 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_rperf_percpu.tap])
326 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_rperf_perthread.tap])
327 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_stress_global.tap])
328 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_stress_percpu.tap])
329 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_stress_perthread.tap])
330 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_mb_uperf_global.tap])
331 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_mb_uperf_percpu.tap])
332 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_mb_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_mb_uperf_perthread.tap])
333 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_perf_global.tap])
334 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_perf_percpu.tap])
335 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_perf_perthread.tap])
336 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_rperf_global.tap])
337 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_rperf_percpu.tap])
338 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_rperf_perthread.tap])
339 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_stress_global.tap])
340 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_stress_percpu.tap])
341 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_stress_perthread.tap])
342 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_uperf_global.tap])
343 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_uperf_percpu.tap])
344 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_membarrier_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_membarrier_uperf_perthread.tap])
345 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_perf_global.tap])
346 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_perf_percpu.tap])
347 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_perf_perthread.tap])
348 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_rperf_global.tap])
349 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_rperf_percpu.tap])
350 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_rperf_perthread.tap])
351 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_stress_global.tap])
352 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_stress_percpu.tap])
353 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_stress_perthread.tap])
354 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_uperf_global.tap])
355 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_uperf_percpu.tap])
356 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_qsbr_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_qsbr_uperf_perthread.tap])
357 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_perf_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_perf_global.tap])
358 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_perf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_perf_percpu.tap])
359 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_perf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_perf_perthread.tap])
360 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_rperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_rperf_global.tap])
361 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_rperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_rperf_percpu.tap])
362 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_rperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_rperf_perthread.tap])
363 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_stress_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_stress_global.tap])
364 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_stress_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_stress_percpu.tap])
365 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_stress_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_stress_perthread.tap])
366 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_uperf_global.tap], [chmod +x tests/regression/rcutorture_urcu_signal_uperf_global.tap])
367 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_uperf_percpu.tap], [chmod +x tests/regression/rcutorture_urcu_signal_uperf_percpu.tap])
368 AC_CONFIG_FILES([tests/regression/rcutorture_urcu_signal_uperf_perthread.tap], [chmod +x tests/regression/rcutorture_urcu_signal_uperf_perthread.tap])
374 # Mini-report on what will be built.
382 AS_ECHO("${PPRINT_COLOR_BLDBLU}Userspace-RCU $PACKAGE_VERSION${PPRINT_COLOR_RST}")
385 PPRINT_SUBTITLE([Features])
387 PPRINT_PROP_STRING([Target architecture], $host_cpu)
389 # SMP support enabled/disabled
390 test "x$def_smp_support" = "xyes" && value=1 || value=0
391 PPRINT_PROP_BOOL([SMP support], $value)
394 test "x$def_compiler_tls" = "xyes" && value="compiler TLS" || value="pthread_getspecific()"
395 PPRINT_PROP_STRING([Thread Local Storage (TLS)], [$value])
397 # clock_gettime() available
398 test "x$config_rcu_have_clock_gettime" = "xyes" && value=1 || value=0
399 PPRINT_PROP_BOOL([clock_gettime()], $value)
402 test "x$def_sys_membarrier_fallback" != "xyes" && value=1 || value=0
403 PPRINT_PROP_BOOL([Require membarrier], $value)
405 # RCU debug enabled/disabled
406 test "x$enable_rcu_debug" = "xyes" && value=1 || value=0
407 PPRINT_PROP_BOOL([Internal debugging], $value)
409 # rculfhash iterator debug enabled/disabled
410 test "x$enable_cds_lfht_iter_debug" = "xyes" && value=1 || value=0
411 PPRINT_PROP_BOOL([Lock-free hash table iterator debugging], $value)
413 PPRINT_PROP_BOOL([Multi-flavor support], 1)
415 report_bindir="`eval eval echo $bindir`"
416 report_libdir="`eval eval echo $libdir`"
418 # Print the bindir and libdir this `make install' will install into.
420 PPRINT_SUBTITLE([Install directories])
421 PPRINT_PROP_STRING([Binaries], [$report_bindir])
422 PPRINT_PROP_STRING([Libraries], [$report_libdir])