Fix: check for rand_r() in compat-rand.h
[urcu.git] / configure.ac
CommitLineData
074c3a1b 1AC_PREREQ(2.59)
1ef91570 2AC_INIT([userspace-rcu],[0.9.0],[mathieu dot desnoyers at efficios dot com], [], [http://liburcu.org/])
98bc124a
YB
3
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
9e5f4ff4 6AC_SUBST([URCU_LIBRARY_VERSION], [5:0:1])
98bc124a 7
6893800a 8AC_CONFIG_HEADERS([include/config.h include/urcu/config.h])
48d848c7 9AC_CONFIG_AUX_DIR([config])
074c3a1b
MJ
10AC_CONFIG_MACRO_DIR([m4])
11
7d413817
MD
12AC_CANONICAL_TARGET
13AC_CANONICAL_HOST
074c3a1b 14
6893800a 15AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip nostdinc])
35eb2d6c 16AM_MAINTAINER_MODE([enable])
7d413817 17
074c3a1b
MJ
18# Enable silent rules if available (Introduced in AM 1.11)
19m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
e72596d1 20
02be5561
MD
21AH_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.])
22AH_TEMPLATE([CONFIG_RCU_HAVE_FENCE], [Defined when on a system that has memory fence instructions.])
23AH_TEMPLATE([CONFIG_RCU_HAVE_FUTEX], [Defined when on a system with futex support.])
a6412536
AM
24AH_TEMPLATE([CONFIG_RCU_COMPAT_ARCH], [Compatibility mode for i386 which lacks cmpxchg instruction.])
25AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for use on ARM.])
a767fdc3 26AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
a0307b90 27AH_TEMPLATE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [clock_gettime() is detected.])
a767fdc3 28
75478b32
MD
29# Allow overriding storage used for TLS variables.
30AC_ARG_ENABLE([compiler-tls],
31 AS_HELP_STRING([--disable-compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.]),
32 [def_compiler_tls=$enableval],
33 [def_compiler_tls="yes"])
34
35# If not overridden, use ax_tls.m4 to check if TLS is available.
36AS_IF([test "x$def_compiler_tls" = "xyes"],
37 [AX_TLS([def_tls_detect=$ac_cv_tls], [:])],
38 [:])
39
40AS_IF([test "x$def_tls_detect" = "x"],
41 [:],
42 [AC_DEFINE_UNQUOTED([CONFIG_RCU_TLS], $def_tls_detect)])
48d848c7 43
074c3a1b
MJ
44# Checks for C compiler
45AC_USE_SYSTEM_EXTENSIONS
48d848c7 46AC_PROG_CC
074c3a1b
MJ
47AC_PROG_CC_STDC
48
49# Checks for programs.
27d5e306 50AC_PROG_AWK
48d848c7 51AC_PROG_MAKE_SET
074c3a1b 52AC_CHECK_PROGS(NPROC, [nproc gnproc])
2350bf7b
MJ
53AC_CHECK_PROGS(GETCONF, [getconf])
54AS_IF([test "x$NPROC" != "x"],
55 [NPROC_CMD=$NPROC],
56 [AS_IF([test "x$GETCONF" != "x"],
57 [NPROC_CMD="$GETCONF _NPROCESSORS_ONLN"],
58 [NPROC_CMD="echo 1"]
59 )]
60)
61AC_SUBST([NPROC_CMD], [$NPROC_CMD])
62
b14a378a 63LT_INIT
48d848c7
PMF
64
65# Checks for typedefs, structures, and compiler characteristics.
66AC_C_INLINE
67AC_TYPE_PID_T
68AC_TYPE_SIZE_T
27d5e306
MJ
69AC_TYPE_SSIZE_T
70AC_TYPE_UINT16_T
991d28ca
JR
71AC_TYPE_INT32_T
72AC_TYPE_UINT32_T
73AC_TYPE_UINT64_T
74AC_TYPE_UINT8_T
48d848c7 75
074c3a1b
MJ
76AX_C___ATTRIBUTE__
77AS_IF([test "x$ax_cv___attribute__" = "xyes"],
78 [:],
79 [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
80
81AX_PTHREAD(,[AC_MSG_ERROR([Could not configure pthreads support])])
82LIBS="$PTHREAD_LIBS $LIBS"
83CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
84CC="$PTHREAD_CC"
85
48d848c7 86# Checks for library functions.
48d848c7 87AC_FUNC_MMAP
27d5e306
MJ
88AC_FUNC_FORK
89AC_CHECK_FUNCS([ \
90 atexit \
27d5e306
MJ
91 getcpuid \
92 gettid \
93 gettimeofday \
94 memeset \
95 memset \
96 munmap \
3e4ae45a 97 rand_r \
27d5e306
MJ
98 sched_getcpu \
99 strerror \
100 strtoul \
101 sysconf \
102])
48d848c7 103
9a62b0f0
MJ
104# AC_FUNC_MALLOC causes problems when cross-compiling.
105#AC_FUNC_MALLOC
106
bb6afa9a 107# Check for headers
7dea28e7 108AC_HEADER_STDBOOL
27d5e306
MJ
109AC_CHECK_HEADERS([ \
110 limits.h \
111 stddef.h \
112 sys/param.h \
113 sys/time.h \
114])
bb6afa9a 115
48d848c7 116# Find arch type
58e9f838 117AS_CASE([$host_cpu],
52fe6e60 118 [k1om], [ARCHTYPE="x86"],
a6412536
AM
119 [i386], [ARCHTYPE="x86" && SUBARCHTYPE="x86compat"],
120 [i486], [ARCHTYPE="x86"],
121 [i586], [ARCHTYPE="x86"],
122 [i686], [ARCHTYPE="x86"],
123 [amd64], [ARCHTYPE="x86"],
124 [x86_64], [ARCHTYPE="x86"],
125 [powerpc], [ARCHTYPE="ppc"],
126 [ppc64], [ARCHTYPE="ppc"],
127 [powerpc64], [ARCHTYPE="ppc"],
61126bd9 128 [powerpc64le], [ARCHTYPE="ppc"],
a6412536
AM
129 [ppc], [ARCHTYPE="ppc"],
130 [s390], [ARCHTYPE="s390"],
131 [s390x], [ARCHTYPE="s390"],
171ff3a3 132 [sparc], [ARCHTYPE="sparc64"],
a6412536
AM
133 [sparc64], [ARCHTYPE="sparc64"],
134 [alpha*], [ARCHTYPE="alpha"],
c21a8d01 135 [ia64], [ARCHTYPE="ia64"],
a6412536 136 [arm*], [ARCHTYPE="arm"],
d1c67842 137 [aarch64*], [ARCHTYPE="aarch64"],
e1259cb1 138 [mips*], [ARCHTYPE="mips"],
859050b3 139 [nios2*], [ARCHTYPE="nios2"],
c23069c6 140 [tile*], [ARCHTYPE="tile"],
13e0bc72 141 [hppa*], [ARCHTYPE="hppa"],
a6412536
AM
142 [ARCHTYPE="unknown"]
143)
91b0650a 144
b129d5d7
SB
145AS_CASE([$host],[*-cygwin*],
146 [AM_CONDITIONAL(USE_CYGWIN, true)],
147 [AM_CONDITIONAL(USE_CYGWIN, false)]
148)
149
a6412536
AM
150AC_SUBST(ARCHTYPE)
151AC_SUBST(SUBARCHTYPE)
5e626e0e 152
6893800a
MJ
153UATOMICSRC=include/urcu/uatomic/$ARCHTYPE.h
154ARCHSRC=include/urcu/arch/$ARCHTYPE.h
455b809a 155
a6412536
AM
156AS_IF([test "x$SUBARCHTYPE" = xx86compat],[
157 AC_DEFINE([CONFIG_RCU_COMPAT_ARCH], [1])
158])
159
58e9f838 160AS_IF([test "$host_cpu" = "armv7l"],[
a6412536
AM
161 CFLAGS="$CFLAGS -mcpu=cortex-a9 -mtune=cortex-a9 -O1"
162])
48d848c7 163
a6412536
AM
164# ARM-specific checks
165AS_IF([test "x$ARCHTYPE" = "xarm"],[
166 AC_MSG_CHECKING([for dmb instruction])
fe0707ab
MD
167 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
168 int main()
169 {
170 asm volatile("dmb":::"memory");
171 return 0;
172 }
173 ]])
174 ],[
a6412536
AM
175 AC_MSG_RESULT([yes])
176 AC_DEFINE([CONFIG_RCU_ARM_HAVE_DMB], [1])
177 ],[
178 AC_MSG_RESULT([no])
179 ])
180])
181
274773cf
SM
182# Tile-specific checks
183AS_IF([echo "$host_cpu" | grep "^tile"],[
184 AC_MSG_CHECKING([for Tile architecture type])
185 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
186 #ifndef __tilegx__
187 #error
188 #endif
189 ]])
190 ],[
191 AC_MSG_RESULT([ok])
192 ],[
193 AC_MSG_FAILURE([URCU has only been tested on the TileGx architecture. For other Tile* architectures, please run the tests first and report the results to the maintainer so that proper support can be added.])
194 ])
195])
196
a6412536
AM
197# x86-specific checks
198AS_IF([test "x$ARCHTYPE" = "xx86"],[
199 AC_MSG_CHECKING([if architecture really supports the mfence instruction])
200 #For now, using lock; addl compatibility mode even for i686, because the
201 #Pentium III is seen as a i686, but lacks mfence instruction.
202 #Only using fence for x86_64.
8496c886
SM
203 #
204 #k1om is the name for the Intel MIC family (Xeon Phi). It is an x86_64
205 #variant but lacks fence instructions.
52fe6e60 206 AS_IF([test "x$host_cpu" != "xi386" -a "x$host_cpu" != "xi486" -a "x$host_cpu" != "xi586" -a "x$host_cpu" != "xi686" -a "x$host_vendor" != "xk1om" -a "x$host_cpu" != "xk1om"],[
a6412536
AM
207 AC_MSG_RESULT([yes])
208 AC_DEFINE([CONFIG_RCU_HAVE_FENCE], [1])
209 ],[
210 AC_MSG_RESULT([no])
211 ])
212])
213
214# Check if sys_futex() is available
215AC_MSG_CHECKING([for sys_futex()])
fe0707ab 216AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
a6412536 217 #include <sys/syscall.h>
a6412536
AM
218 #ifndef __NR_futex
219 #error "futexes not available"
220 #endif
fe0707ab 221 ]])
a6412536 222],[
0854ccff 223 AC_MSG_RESULT([yes])
02be5561 224 AC_DEFINE([CONFIG_RCU_HAVE_FUTEX], [1])
0854ccff 225 compat_futex_test=0
91b0650a 226],[
0854ccff
MD
227 AC_MSG_RESULT([no])
228 compat_futex_test=1
91b0650a 229])
0854ccff 230
8be0fb5f 231# Search for clock_gettime
a0307b90
MD
232AC_SEARCH_LIBS([clock_gettime], [rt], [
233 AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1])
234], [])
8be0fb5f 235
a6412536
AM
236AM_CONDITIONAL([COMPAT_FUTEX], [test "x$compat_futex_test" = "x1"])
237AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = "xx86compat"])
2f49a496 238AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
0854ccff 239
a6412536
AM
240# smp-support configure option
241AC_ARG_ENABLE([smp-support],
242 AS_HELP_STRING([--disable-smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems. [default=enabled]]),
243 [def_smp_support=$enableval],
244 [def_smp_support="yes"])
245AS_IF([test "x$def_smp_support" = "xyes"], [AC_DEFINE([CONFIG_RCU_SMP], [1])])
7d413817 246
48d848c7 247
d8540fc5
PA
248# From the sched_setaffinity(2)'s man page:
249# ~~~~
250# The CPU affinity system calls were introduced in Linux kernel 2.5.8.
251# The library interfaces were introduced in glibc 2.3. Initially, the
252# glibc interfaces included a cpusetsize argument. In glibc 2.3.3,
253# the cpuset size argument was removed, but this argument was
254# restored in glibc 2.3.4.
255# ~~~~
256
257# In addition to that, some vendors ported the system call to 2.4
258# kernels.
259
260# Furthermore, when the function first appeared, the MASK argument was
261# an unsigned long pointer, while later it was made into a cpu_set_t
262# pointer. Systems that have the cpu_set_t version also should have
263# the CPU_ZERO, CPU_SET, etc. macros.
264
265# All this mess means we have to cater for at least 3 different
266# sched_setaffinity prototypes:
267
268# ~~~~
269# int sched_setaffinity (pid_t pid, unsigned int len, unsigned long *mask);
270# int sched_setaffinity (pid_t __pid, size_t __cpusetsize, const cpu_set_t *__cpuset);
271# int sched_setaffinity (pid_t __pid, const cpu_set_t *__mask);
272# ~~~~
273
b3231c17
MD
274AC_CHECK_TYPES([cpu_set_t],
275 [have_cpu_set_t="yes"],
276 [have_cpu_set_t="no"],
277 [#include <sched.h>])
278
279# Confirm that we have CPU_ZERO, and it actually works.
280AC_MSG_CHECKING([whether CPU_ZERO works])
281AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works])
282AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
b3231c17
MD
283 #include <sched.h>
284 int main()
285 {
286 cpu_set_t foo; CPU_ZERO(&foo);
287 return 0;
288 }
289 ]])
290],[
291 AC_DEFINE(HAVE_CPU_ZERO, 1)
292 AC_MSG_RESULT([yes])
293],[
294 AC_MSG_RESULT([no])
295])
296
297# Confirm that we have CPU_SET, and it actually works.
298AC_MSG_CHECKING([whether CPU_SET works])
299AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works])
300AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
b3231c17
MD
301 #include <sched.h>
302 int main()
303 {
304 cpu_set_t foo, mask; CPU_SET(0, &foo);
305 return 0;
306 }
307 ]])
308],[
309 AC_DEFINE(HAVE_CPU_SET, 1)
310 AC_MSG_RESULT([yes])
311],[
312 AC_MSG_RESULT([no])
313])
314
d8540fc5 315# First check if the function is available at all.
a6412536
AM
316AC_CHECK_FUNCS([sched_setaffinity],[
317 # Okay, we have it. Check if also have cpu_set_t. If we don't,
318 # then we have the first version using unsigned long, and no
319 # CPU_ZERO, etc. macros. If we do have cpu_set_t, we may have the
320 # version with 2 or 3 arguments. In that case, CPU_ZERO, etc.,
321 # should also be present, but we confirm nonetheless.
322
b3231c17
MD
323 AS_IF([test "x$have_cpu_set_t" = "xyes"], [
324 # We do have it.
a6412536
AM
325 # Check how many arguments does sched_setaffinity take.
326 # Should be 3 or 2.
327 AC_MSG_CHECKING([how many arguments sched_setaffinity takes])
ec5e2d14 328 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
a6412536 329 #include <sched.h>
fe0707ab
MD
330 int main()
331 {
332 cpu_set_t foo;
b3231c17 333 sched_setaffinity(0, sizeof (foo), &foo);
fe0707ab
MD
334 return 0;
335 }
a6412536
AM
336 ]])
337 ],
338 [sched_set_affinity_args=3],
339 [sched_set_affinity_args=2])
b3231c17
MD
340 AC_DEFINE_UNQUOTED(SCHED_SETAFFINITY_ARGS,
341 $sched_set_affinity_args,
a6412536
AM
342 [Defined to sched_setaffinity's number of arguments.])
343 AC_MSG_RESULT([$sched_set_affinity_args])
344 ],[
345 # No cpu_set_t, always 3 args.
346 AC_DEFINE(SCHED_SETAFFINITY_ARGS, 3)
b3231c17 347 ])
a6412536 348])
d8540fc5 349
6893800a
MJ
350DEFAULT_INCLUDES="-include config.h"
351AC_SUBST(DEFAULT_INCLUDES)
d8540fc5 352
455b809a 353AC_CONFIG_LINKS([
6893800a
MJ
354 include/urcu/arch.h:$ARCHSRC
355 include/urcu/uatomic.h:$UATOMICSRC
455b809a 356])
48d848c7
PMF
357AC_CONFIG_FILES([
358 Makefile
fe999c05 359 doc/Makefile
8bad63a0 360 doc/examples/Makefile
6893800a
MJ
361 include/Makefile
362 src/Makefile
48d848c7 363 tests/Makefile
f5ab766e
MD
364 tests/common/Makefile
365 tests/unit/Makefile
366 tests/benchmark/Makefile
367 tests/regression/Makefile
074c3a1b 368 tests/regression/regression_tests
1b387491 369 tests/utils/Makefile
6893800a
MJ
370 src/liburcu.pc
371 src/liburcu-bp.pc
372 src/liburcu-cds.pc
373 src/liburcu-qsbr.pc
374 src/liburcu-mb.pc
375 src/liburcu-signal.pc
48d848c7
PMF
376])
377AC_OUTPUT
a6412536
AM
378
379# Report on selected configure options
380AS_IF([test "x$def_smp_support" = "xyes"],[
381 AS_ECHO("SMP support enabled.")
382],[
383 AS_ECHO("SMP support disabled.")
384])
75478b32
MD
385
386AS_IF([test "x$def_tls_detect" = "x"],[
387 AS_ECHO("Thread Local Storage (TLS): pthread_getspecific().")
388],[
389 AS_ECHO("Thread Local Storage (TLS): $def_tls_detect.")
390])
This page took 0.078784 seconds and 4 git commands to generate.