Update ABI definition files
[urcu.git] / configure.ac
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1dnl SPDX-License-Identifier: LGPL-2.1-only
2dnl
3dnl Copyright (C) 2021 EfficiOS, Inc.
4dnl
5dnl Process this file with autoconf to produce a configure script.
6
7# Project version information
8m4_define([urcu_version_major], [0])
5beb5548 9m4_define([urcu_version_minor], [14])
23975ca7 10m4_define([urcu_version_patch], [0])
5beb5548 11m4_define([urcu_version_dev_stage], [-pre])
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12m4_define([urcu_version], urcu_version_major[.]urcu_version_minor[.]urcu_version_patch[]urcu_version_dev_stage)
13
14# Library version information of "liburcu"
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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
5feb4925 17m4_define([urcu_lib_version_current], [9])
23975ca7 18m4_define([urcu_lib_version_revision], [0])
5feb4925 19m4_define([urcu_lib_version_age], [1])
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20m4_define([urcu_lib_version], urcu_lib_version_current[:]urcu_lib_version_revision[:]urcu_lib_version_age)
21
22
23## ##
24## Autoconf base setup ##
25## ##
26
afb6113f 27AC_PREREQ([2.69])
23975ca7 28AC_INIT([userspace-rcu],[urcu_version],[mathieu dot desnoyers at efficios dot com],[],[http://liburcu.org/])
98bc124a 29
6893800a 30AC_CONFIG_HEADERS([include/config.h include/urcu/config.h])
48d848c7 31AC_CONFIG_AUX_DIR([config])
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32AC_CONFIG_MACRO_DIR([m4])
33
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34AC_CANONICAL_TARGET
35AC_CANONICAL_HOST
074c3a1b 36
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37
38## ##
39## Automake base setup ##
40## ##
41
42AM_INIT_AUTOMAKE([1.12 foreign dist-bzip2 no-dist-gzip nostdinc -Wall -Wno-portability -Werror])
35eb2d6c 43AM_MAINTAINER_MODE([enable])
7d413817 44
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45# Enable silent rules by default
46AM_SILENT_RULES([yes])
e72596d1 47
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48
49## ##
50## OS and Arch specific defaults ##
51## ##
52
53AS_CASE([$host],
54 [*-cygwin*], [LT_NO_UNDEFINED="-no-undefined"]
55)
56
57
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58## ##
59## C compiler checks ##
60## ##
61
62# Choose the C compiler
63AC_PROG_CC
64# AC_PROG_CC_STDC was merged in AC_PROG_CC in autoconf 2.70
65m4_version_prereq([2.70], [], [AC_PROG_CC_STDC])
66
67# Make sure the C compiler supports C99
68AS_IF([test "$ac_cv_prog_cc_c99" = "no"], [AC_MSG_ERROR([The compiler does not support C99])])
69
70# Enable available system extensions and LFS support
71AC_USE_SYSTEM_EXTENSIONS
72AC_SYS_LARGEFILE
73
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74## ##
75## C++ compiler checks ##
76## ##
77
78# Require a C++11 compiler without GNU extensions (-std=c++11)
79AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
80
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81# Make sure the C compiler supports __attribute__
82AX_C___ATTRIBUTE__
83AS_IF([test "x$ax_cv___attribute__" != "xyes"],
84 [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
85
86# Make sure we have pthread support
87AX_PTHREAD([], [AC_MSG_ERROR([Could not configure pthread support])])
88
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89# Checks for typedefs, structures, and compiler characteristics.
90AC_C_INLINE
91AC_C_TYPEOF
92AC_TYPE_INT32_T
93AC_TYPE_PID_T
94AC_TYPE_SIZE_T
95AC_TYPE_SSIZE_T
96AC_TYPE_UINT16_T
97AC_TYPE_UINT32_T
98AC_TYPE_UINT64_T
99AC_TYPE_UINT8_T
100
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101# Detect warning flags supported by the C compiler and append them to
102# WARN_CFLAGS.
103m4_define([WARN_FLAGS_LIST], [ dnl
104 -Wall dnl
105 -Wextra dnl
106 -Wmissing-prototypes dnl
107 -Wmissing-declarations dnl
108 -Wnull-dereference dnl
109 -Wundef dnl
110 -Wshadow dnl
111 -Wjump-misses-init dnl
112 -Wsuggest-attribute=format dnl
113 -Wtautological-constant-out-of-range-compare dnl
114 -Wnested-externs dnl
115 -Wwrite-strings dnl
116 -Wformat=2 dnl
117 -Wstrict-aliasing dnl
118 -Wmissing-noreturn dnl
119 -Winit-self dnl
120 -Wduplicated-cond dnl
121 -Wduplicated-branches dnl
122 -Wlogical-op dnl
123 dnl
124 dnl-Wredundant-decls dnl
125 -Wno-null-dereference dnl
126])
127
128# Pass -Werror as an extra flag during the test: this is needed to make the
129# -Wunknown-warning-option diagnostic fatal with clang.
130AC_LANG_PUSH([C])
131AX_APPEND_COMPILE_FLAGS([WARN_FLAGS_LIST], [WARN_CFLAGS], [-Werror])
132AC_LANG_POP([C])
133
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134AC_LANG_PUSH([C++])
135AX_APPEND_COMPILE_FLAGS([WARN_FLAGS_LIST], [WARN_CXXFLAGS], [-Werror])
136AC_LANG_POP([C++])
137
35701ce9 138AE_IF_FEATURE_ENABLED([Werror], [WARN_CFLAGS="${WARN_CFLAGS} -Werror"])
153b081a 139AE_IF_FEATURE_ENABLED([Werror], [WARN_CXXFLAGS="${WARN_CXXFLAGS} -Werror"])
35701ce9 140
8b2f0590 141
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142## ##
143## Header checks ##
144## ##
145
146AC_HEADER_STDBOOL
147AC_CHECK_HEADERS([ \
148 limits.h \
149 stddef.h \
150 sys/param.h \
151 sys/time.h \
152])
153
154
155## ##
156## Programs checks ##
157## ##
158
159AC_PROG_AWK
160AC_PROG_GREP
161AC_PROG_MAKE_SET
162AC_CHECK_PROGS(NPROC, [nproc gnproc])
f0124a5a 163AC_CHECK_PROGS(GETCONF, [getconf])
de6cb9d5 164AC_CHECK_PROGS(TIME, [time])
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165
166# Initialize and configure libtool
167LT_INIT
168
169
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170## ##
171## Library checks ##
172## ##
173
174# Checks for library functions.
175AC_FUNC_MMAP
176AC_FUNC_FORK
177AC_CHECK_FUNCS([ \
178 atexit \
179 getcpuid \
180 gettid \
181 gettimeofday \
182 memeset \
183 memset \
184 munmap \
185 rand_r \
186 sched_getcpu \
0614a2e6 187 sched_setaffinity \
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188 strerror \
189 strtoul \
190 sysconf \
191])
192
193# AC_FUNC_MALLOC causes problems when cross-compiling.
194#AC_FUNC_MALLOC
195
196# Search for clock_gettime() in -lrt
197AC_SEARCH_LIBS([clock_gettime], [rt], [
198 AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1], [clock_gettime() is detected.])
199])
200
201
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202## ##
203## Optional features selection ##
204## ##
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205
206# Allow to fallback to FIXME if the membarrier syscall is unavailable on the
207# running kernel, when disabled, abort if the syscall is unavailable. Applies
208# to default and bulletproof flavors.
209# Enabled by default
210AE_FEATURE_DEFAULT_ENABLE
211AE_FEATURE([sys-membarrier-fallback], [Abort if sys-membarrier is needed but not available rather than using a fallback.])
212
213# Use compiler Thread Local Storage, when disabled use pthread_getspecific() to emulate TLS.
214# Enabled by default
215AE_FEATURE_DEFAULT_ENABLE
216AE_FEATURE([compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.])
c673679b 217
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218# smp-support configure option
219# Enabled by default
220AE_FEATURE_DEFAULT_ENABLE
221AE_FEATURE([smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems.])
d8d9a340 222
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223# RCU debugging option
224# Disabled by default
225AE_FEATURE_DEFAULT_DISABLE
226AE_FEATURE([rcu-debug], [Enable internal debugging self-checks. Introduces a performance penalty.])
a767fdc3 227
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228# rculfhash iterator debugging
229# Disabled by default
230AE_FEATURE_DEFAULT_DISABLE
231AE_FEATURE([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.])
75478b32 232
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233# When given, add -Werror to WARN_CFLAGS and WARN_CXXFLAGS.
234# Disabled by default
235AE_FEATURE_DEFAULT_DISABLE
236AE_FEATURE([Werror],[Treat compiler warnings as errors.])
48d848c7 237
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238## ##
239## Set defines for optional features conditionnals in the source code ##
240## ##
48d848c7 241
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242AE_IF_FEATURE_DISABLED([sys-membarrier-fallback], [
243 AC_DEFINE([CONFIG_RCU_FORCE_SYS_MEMBARRIER], [1], [Require the operating system to support the membarrier system call for default and bulletproof flavors.])
244])
cdadd34c 245
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246AE_IF_FEATURE_ENABLED([compiler-tls], [
247 AC_DEFINE([CONFIG_RCU_TLS], [1], [Use compiler provided Thread Local Storage.])
248])
0854ccff 249
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250AE_IF_FEATURE_ENABLED([smp-support], [
251 AC_DEFINE([CONFIG_RCU_SMP], [1], [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.])
252])
7d413817 253
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254AE_IF_FEATURE_ENABLED([rcu-debug], [
255 AC_DEFINE([CONFIG_RCU_DEBUG], [1], [Enable internal debugging self-checks. Introduces a performance penalty.])
d4e640c0 256])
48d848c7 257
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258AE_IF_FEATURE_ENABLED([cds-lfht-iter-debug], [
259 AC_DEFINE([CONFIG_CDS_LFHT_ITER_DEBUG], [1], [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.])
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260])
261
86bc2ad8 262
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263## ##
264## Set automake variables for optional feature conditionnals in Makefile.am ##
265## ##
266
267# Building the examples requires the shared libraries to be enabled
268AM_CONDITIONAL([ENABLE_EXAMPLES], AE_IS_FEATURE_ENABLED([shared]))
269
270
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271## ##
272## Substitute variables for use in Makefile.am ##
273## ##
274
275# Library versions for libtool
276AC_SUBST([URCU_LIBRARY_VERSION], [urcu_lib_version])
277
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278AC_SUBST(LT_NO_UNDEFINED)
279
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280# The order in which the include folders are searched is important.
281# The top_builddir should always be searched first in the event that a build
282# time generated file is included.
283AM_CPPFLAGS="-I\$(top_builddir)/include -I\$(top_srcdir)/include -include config.h"
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284AC_SUBST(AM_CPPFLAGS)
285
ee334e48 286AM_CFLAGS="$WARN_CFLAGS $PTHREAD_CFLAGS"
9a79c612 287AC_SUBST(AM_CFLAGS)
d8540fc5 288
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289AM_CXXFLAGS="$WARN_CXXFLAGS $PTHREAD_CFLAGS"
290AC_SUBST(AM_CXXFLAGS)
291
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292
293## ##
294## Output files generated by configure ##
295## ##
296
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297AC_CONFIG_FILES([
298 Makefile
fe999c05 299 doc/Makefile
8bad63a0 300 doc/examples/Makefile
c0ecb6ea 301 extras/Makefile
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302 include/Makefile
303 src/Makefile
48d848c7 304 tests/Makefile
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305 tests/common/Makefile
306 tests/unit/Makefile
307 tests/benchmark/Makefile
308 tests/regression/Makefile
1b387491 309 tests/utils/Makefile
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310 src/liburcu.pc
311 src/liburcu-bp.pc
312 src/liburcu-cds.pc
313 src/liburcu-qsbr.pc
314 src/liburcu-mb.pc
799d344f 315 src/liburcu-memb.pc
6893800a 316 src/liburcu-signal.pc
48d848c7 317])
03c5782e 318
de6cb9d5 319AC_CONFIG_FILES([tests/utils/env.sh],[chmod +x tests/utils/env.sh])
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320
321
48d848c7 322AC_OUTPUT
a6412536 323
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324#
325# Mini-report on what will be built.
326#
327
328PPRINT_INIT
329PPRINT_SET_INDENT(1)
330PPRINT_SET_TS(38)
331
332AS_ECHO
333AS_ECHO("${PPRINT_COLOR_BLDBLU}Userspace-RCU $PACKAGE_VERSION${PPRINT_COLOR_RST}")
334AS_ECHO
335
336PPRINT_SUBTITLE([Features])
337
338PPRINT_PROP_STRING([Target architecture], $host_cpu)
339
340# SMP support enabled/disabled
86bc2ad8 341AE_IS_FEATURE_ENABLED([smp-support]) && value=1 || value=0
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342PPRINT_PROP_BOOL([SMP support], $value)
343
628a1a72 344# TLS
86bc2ad8 345AE_IS_FEATURE_ENABLED([compiler-tls]) && value="compiler TLS" || value="pthread_getspecific()"
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346PPRINT_PROP_STRING([Thread Local Storage (TLS)], [$value])
347
348# clock_gettime() available
c673679b 349test "x$ac_cv_search_function_clock_gettime" != "xno" && value=1 || value=0
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350PPRINT_PROP_BOOL([clock_gettime()], $value)
351
352# Require membarrier
86bc2ad8 353AE_IS_FEATURE_ENABLED([sys-membarrier-fallback]) && value=0 || value=1
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354PPRINT_PROP_BOOL([Require membarrier], $value)
355
356# RCU debug enabled/disabled
86bc2ad8 357AE_IS_FEATURE_ENABLED([rcu-debug]) && value=1 || value=0
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358PPRINT_PROP_BOOL([Internal debugging], $value)
359
d7c76f85 360# rculfhash iterator debug enabled/disabled
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361AE_IS_FEATURE_ENABLED([cds-lfht-iter-debug]) && value=1 || value=0
362PPRINT_PROP_BOOL([Lock-free HT iterator debugging], $value)
d7c76f85 363
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364PPRINT_PROP_BOOL([Multi-flavor support], 1)
365
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366report_bindir="`eval eval echo $bindir`"
367report_libdir="`eval eval echo $libdir`"
368
86bc2ad8 369# Print the bindir and libdir this 'make install' will install into.
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370AS_ECHO
371PPRINT_SUBTITLE([Install directories])
372PPRINT_PROP_STRING([Binaries], [$report_bindir])
373PPRINT_PROP_STRING([Libraries], [$report_libdir])
75478b32 374
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