Commit | Line | Data |
---|---|---|
074c3a1b | 1 | AC_PREREQ(2.59) |
5b78b214 | 2 | AC_INIT([userspace-rcu],[0.9.2],[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 | |
acdb423b | 6 | AC_SUBST([URCU_LIBRARY_VERSION], [4:0:1]) |
98bc124a | 7 | |
074c3a1b MJ |
8 | AC_CONFIG_SRCDIR([urcu.h]) |
9 | AC_CONFIG_HEADERS([config.h urcu/config.h]) | |
48d848c7 | 10 | AC_CONFIG_AUX_DIR([config]) |
074c3a1b MJ |
11 | AC_CONFIG_MACRO_DIR([m4]) |
12 | ||
7d413817 MD |
13 | AC_CANONICAL_TARGET |
14 | AC_CANONICAL_HOST | |
074c3a1b | 15 | |
48d848c7 | 16 | AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip]) |
35eb2d6c | 17 | AM_MAINTAINER_MODE([enable]) |
7d413817 | 18 | |
074c3a1b MJ |
19 | # Enable silent rules if available (Introduced in AM 1.11) |
20 | m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) | |
e72596d1 | 21 | |
02be5561 MD |
22 | 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.]) |
23 | AH_TEMPLATE([CONFIG_RCU_HAVE_FENCE], [Defined when on a system that has memory fence instructions.]) | |
24 | AH_TEMPLATE([CONFIG_RCU_HAVE_FUTEX], [Defined when on a system with futex support.]) | |
a6412536 AM |
25 | AH_TEMPLATE([CONFIG_RCU_COMPAT_ARCH], [Compatibility mode for i386 which lacks cmpxchg instruction.]) |
26 | AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for use on ARM.]) | |
a767fdc3 | 27 | AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.]) |
28d4495e | 28 | AH_TEMPLATE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [clock_gettime() is detected.]) |
a767fdc3 | 29 | |
75478b32 MD |
30 | # Allow overriding storage used for TLS variables. |
31 | AC_ARG_ENABLE([compiler-tls], | |
32 | AS_HELP_STRING([--disable-compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.]), | |
33 | [def_compiler_tls=$enableval], | |
34 | [def_compiler_tls="yes"]) | |
35 | ||
36 | # If not overridden, use ax_tls.m4 to check if TLS is available. | |
37 | AS_IF([test "x$def_compiler_tls" = "xyes"], | |
38 | [AX_TLS([def_tls_detect=$ac_cv_tls], [:])], | |
39 | [:]) | |
40 | ||
41 | AS_IF([test "x$def_tls_detect" = "x"], | |
42 | [:], | |
43 | [AC_DEFINE_UNQUOTED([CONFIG_RCU_TLS], $def_tls_detect)]) | |
48d848c7 | 44 | |
074c3a1b MJ |
45 | # Checks for C compiler |
46 | AC_USE_SYSTEM_EXTENSIONS | |
48d848c7 | 47 | AC_PROG_CC |
074c3a1b MJ |
48 | AC_PROG_CC_STDC |
49 | ||
50 | # Checks for programs. | |
27d5e306 | 51 | AC_PROG_AWK |
48d848c7 | 52 | AC_PROG_MAKE_SET |
074c3a1b | 53 | AC_CHECK_PROGS(NPROC, [nproc gnproc]) |
0b1302de MJ |
54 | AC_CHECK_PROGS(GETCONF, [getconf]) |
55 | AS_IF([test "x$NPROC" != "x"], | |
56 | [NPROC_CMD=$NPROC], | |
57 | [AS_IF([test "x$GETCONF" != "x"], | |
58 | [NPROC_CMD="$GETCONF _NPROCESSORS_ONLN"], | |
59 | [NPROC_CMD="echo 1"] | |
60 | )] | |
61 | ) | |
62 | AC_SUBST([NPROC_CMD], [$NPROC_CMD]) | |
63 | ||
b14a378a | 64 | LT_INIT |
48d848c7 PMF |
65 | |
66 | # Checks for typedefs, structures, and compiler characteristics. | |
67 | AC_C_INLINE | |
68 | AC_TYPE_PID_T | |
69 | AC_TYPE_SIZE_T | |
27d5e306 MJ |
70 | AC_TYPE_SSIZE_T |
71 | AC_TYPE_UINT16_T | |
991d28ca JR |
72 | AC_TYPE_INT32_T |
73 | AC_TYPE_UINT32_T | |
74 | AC_TYPE_UINT64_T | |
75 | AC_TYPE_UINT8_T | |
48d848c7 | 76 | |
074c3a1b MJ |
77 | AX_C___ATTRIBUTE__ |
78 | AS_IF([test "x$ax_cv___attribute__" = "xyes"], | |
79 | [:], | |
80 | [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])]) | |
81 | ||
82 | AX_PTHREAD(,[AC_MSG_ERROR([Could not configure pthreads support])]) | |
83 | LIBS="$PTHREAD_LIBS $LIBS" | |
84 | CFLAGS="$CFLAGS $PTHREAD_CFLAGS" | |
85 | CC="$PTHREAD_CC" | |
86 | ||
48d848c7 PMF |
87 | # Checks for library functions. |
88 | AC_FUNC_MALLOC | |
89 | AC_FUNC_MMAP | |
27d5e306 MJ |
90 | AC_FUNC_FORK |
91 | AC_CHECK_FUNCS([ \ | |
92 | atexit \ | |
27d5e306 MJ |
93 | getcpuid \ |
94 | gettid \ | |
95 | gettimeofday \ | |
96 | memeset \ | |
97 | memset \ | |
98 | munmap \ | |
99 | sched_getcpu \ | |
100 | strerror \ | |
101 | strtoul \ | |
102 | sysconf \ | |
103 | ]) | |
48d848c7 | 104 | |
bb6afa9a | 105 | # Check for headers |
7dea28e7 | 106 | AC_HEADER_STDBOOL |
27d5e306 MJ |
107 | AC_CHECK_HEADERS([ \ |
108 | limits.h \ | |
109 | stddef.h \ | |
110 | sys/param.h \ | |
111 | sys/time.h \ | |
112 | ]) | |
bb6afa9a | 113 | |
48d848c7 | 114 | # Find arch type |
58e9f838 | 115 | AS_CASE([$host_cpu], |
ab4523c0 | 116 | [k1om], [ARCHTYPE="x86"], |
a6412536 AM |
117 | [i386], [ARCHTYPE="x86" && SUBARCHTYPE="x86compat"], |
118 | [i486], [ARCHTYPE="x86"], | |
119 | [i586], [ARCHTYPE="x86"], | |
120 | [i686], [ARCHTYPE="x86"], | |
121 | [amd64], [ARCHTYPE="x86"], | |
122 | [x86_64], [ARCHTYPE="x86"], | |
123 | [powerpc], [ARCHTYPE="ppc"], | |
124 | [ppc64], [ARCHTYPE="ppc"], | |
125 | [powerpc64], [ARCHTYPE="ppc"], | |
61126bd9 | 126 | [powerpc64le], [ARCHTYPE="ppc"], |
a6412536 AM |
127 | [ppc], [ARCHTYPE="ppc"], |
128 | [s390], [ARCHTYPE="s390"], | |
129 | [s390x], [ARCHTYPE="s390"], | |
171ff3a3 | 130 | [sparc], [ARCHTYPE="sparc64"], |
a6412536 AM |
131 | [sparc64], [ARCHTYPE="sparc64"], |
132 | [alpha*], [ARCHTYPE="alpha"], | |
c21a8d01 | 133 | [ia64], [ARCHTYPE="ia64"], |
a6412536 | 134 | [arm*], [ARCHTYPE="arm"], |
f772add3 | 135 | [aarch64*], [ARCHTYPE="aarch64"], |
e1259cb1 | 136 | [mips*], [ARCHTYPE="mips"], |
c23069c6 | 137 | [tile*], [ARCHTYPE="tile"], |
13e0bc72 | 138 | [hppa*], [ARCHTYPE="hppa"], |
a6412536 AM |
139 | [ARCHTYPE="unknown"] |
140 | ) | |
91b0650a | 141 | |
de41725c CB |
142 | AS_CASE([$host],[*-*-linux-androideabi], |
143 | [AM_CONDITIONAL(TARGET_IS_ANDROID, true)], | |
144 | [AM_CONDITIONAL(TARGET_IS_ANDROID, false)] | |
145 | ) | |
146 | ||
e14c9f0d SB |
147 | AS_CASE([$host],[*-cygwin*], |
148 | [AM_CONDITIONAL(USE_CYGWIN, true)], | |
149 | [AM_CONDITIONAL(USE_CYGWIN, false)] | |
150 | ) | |
151 | ||
a6412536 AM |
152 | AC_SUBST(ARCHTYPE) |
153 | AC_SUBST(SUBARCHTYPE) | |
5e626e0e | 154 | |
a2e7bf9c | 155 | UATOMICSRC=urcu/uatomic/$ARCHTYPE.h |
1b9119f8 | 156 | ARCHSRC=urcu/arch/$ARCHTYPE.h |
455b809a | 157 | |
a6412536 AM |
158 | AS_IF([test "x$SUBARCHTYPE" = xx86compat],[ |
159 | AC_DEFINE([CONFIG_RCU_COMPAT_ARCH], [1]) | |
160 | ]) | |
161 | ||
58e9f838 | 162 | AS_IF([test "$host_cpu" = "armv7l"],[ |
a6412536 AM |
163 | CFLAGS="$CFLAGS -mcpu=cortex-a9 -mtune=cortex-a9 -O1" |
164 | ]) | |
48d848c7 | 165 | |
a6412536 AM |
166 | # ARM-specific checks |
167 | AS_IF([test "x$ARCHTYPE" = "xarm"],[ | |
168 | AC_MSG_CHECKING([for dmb instruction]) | |
fe0707ab MD |
169 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ |
170 | int main() | |
171 | { | |
172 | asm volatile("dmb":::"memory"); | |
173 | return 0; | |
174 | } | |
175 | ]]) | |
176 | ],[ | |
a6412536 AM |
177 | AC_MSG_RESULT([yes]) |
178 | AC_DEFINE([CONFIG_RCU_ARM_HAVE_DMB], [1]) | |
179 | ],[ | |
180 | AC_MSG_RESULT([no]) | |
181 | ]) | |
182 | ]) | |
183 | ||
274773cf SM |
184 | # Tile-specific checks |
185 | AS_IF([echo "$host_cpu" | grep "^tile"],[ | |
186 | AC_MSG_CHECKING([for Tile architecture type]) | |
187 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
188 | #ifndef __tilegx__ | |
189 | #error | |
190 | #endif | |
191 | ]]) | |
192 | ],[ | |
193 | AC_MSG_RESULT([ok]) | |
194 | ],[ | |
195 | 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.]) | |
196 | ]) | |
197 | ]) | |
198 | ||
a6412536 AM |
199 | # x86-specific checks |
200 | AS_IF([test "x$ARCHTYPE" = "xx86"],[ | |
201 | AC_MSG_CHECKING([if architecture really supports the mfence instruction]) | |
202 | #For now, using lock; addl compatibility mode even for i686, because the | |
203 | #Pentium III is seen as a i686, but lacks mfence instruction. | |
204 | #Only using fence for x86_64. | |
8496c886 SM |
205 | # |
206 | #k1om is the name for the Intel MIC family (Xeon Phi). It is an x86_64 | |
207 | #variant but lacks fence instructions. | |
ab4523c0 | 208 | AS_IF([test "x$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$host_cpu" != "xk1om"],[ |
a6412536 AM |
209 | AC_MSG_RESULT([yes]) |
210 | AC_DEFINE([CONFIG_RCU_HAVE_FENCE], [1]) | |
211 | ],[ | |
212 | AC_MSG_RESULT([no]) | |
213 | ]) | |
214 | ]) | |
215 | ||
216 | # Check if sys_futex() is available | |
217 | AC_MSG_CHECKING([for sys_futex()]) | |
fe0707ab | 218 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ |
a6412536 | 219 | #include <sys/syscall.h> |
a6412536 AM |
220 | #ifndef __NR_futex |
221 | #error "futexes not available" | |
222 | #endif | |
fe0707ab | 223 | ]]) |
a6412536 | 224 | ],[ |
0854ccff | 225 | AC_MSG_RESULT([yes]) |
02be5561 | 226 | AC_DEFINE([CONFIG_RCU_HAVE_FUTEX], [1]) |
0854ccff | 227 | compat_futex_test=0 |
91b0650a | 228 | ],[ |
0854ccff MD |
229 | AC_MSG_RESULT([no]) |
230 | compat_futex_test=1 | |
91b0650a | 231 | ]) |
0854ccff | 232 | |
b4bdf51a | 233 | # Search for clock_gettime |
28d4495e MD |
234 | AC_SEARCH_LIBS([clock_gettime], [rt], [ |
235 | AC_DEFINE([CONFIG_RCU_HAVE_CLOCK_GETTIME], [1]) | |
236 | ], []) | |
b4bdf51a | 237 | |
0e1efa0e CB |
238 | # Check for pthread |
239 | AC_CHECK_LIB([pthread], [pthread_create], | |
240 | [AM_CONDITIONAL(LIBC_INCLUDES_PTHREAD, false)], | |
241 | [AC_CHECK_LIB([c], [pthread_create], | |
242 | [AM_CONDITIONAL(LIBC_INCLUDES_PTHREAD, true)], | |
243 | [AC_MSG_ERROR([Cannot find libpthread. Use [LDFLAGS]=-Ldir to specify its location.])] | |
244 | )] | |
245 | ) | |
246 | ||
a6412536 AM |
247 | AM_CONDITIONAL([COMPAT_FUTEX], [test "x$compat_futex_test" = "x1"]) |
248 | AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = "xx86compat"]) | |
2f49a496 | 249 | AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"]) |
0854ccff | 250 | |
a6412536 AM |
251 | # smp-support configure option |
252 | AC_ARG_ENABLE([smp-support], | |
253 | AS_HELP_STRING([--disable-smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems. [default=enabled]]), | |
254 | [def_smp_support=$enableval], | |
255 | [def_smp_support="yes"]) | |
256 | AS_IF([test "x$def_smp_support" = "xyes"], [AC_DEFINE([CONFIG_RCU_SMP], [1])]) | |
7d413817 | 257 | |
48d848c7 | 258 | |
d8540fc5 PA |
259 | # From the sched_setaffinity(2)'s man page: |
260 | # ~~~~ | |
261 | # The CPU affinity system calls were introduced in Linux kernel 2.5.8. | |
262 | # The library interfaces were introduced in glibc 2.3. Initially, the | |
263 | # glibc interfaces included a cpusetsize argument. In glibc 2.3.3, | |
264 | # the cpuset size argument was removed, but this argument was | |
265 | # restored in glibc 2.3.4. | |
266 | # ~~~~ | |
267 | ||
268 | # In addition to that, some vendors ported the system call to 2.4 | |
269 | # kernels. | |
270 | ||
271 | # Furthermore, when the function first appeared, the MASK argument was | |
272 | # an unsigned long pointer, while later it was made into a cpu_set_t | |
273 | # pointer. Systems that have the cpu_set_t version also should have | |
274 | # the CPU_ZERO, CPU_SET, etc. macros. | |
275 | ||
276 | # All this mess means we have to cater for at least 3 different | |
277 | # sched_setaffinity prototypes: | |
278 | ||
279 | # ~~~~ | |
280 | # int sched_setaffinity (pid_t pid, unsigned int len, unsigned long *mask); | |
281 | # int sched_setaffinity (pid_t __pid, size_t __cpusetsize, const cpu_set_t *__cpuset); | |
282 | # int sched_setaffinity (pid_t __pid, const cpu_set_t *__mask); | |
283 | # ~~~~ | |
284 | ||
a6412536 AM |
285 | # Since we define _GNU_SOURCE in the sources, must do so too in the |
286 | # autoconf tests, as defining _GNU_SOURCE or not exposes | |
287 | # sched_setaffinity bits differently. | |
d8540fc5 PA |
288 | saved_CFLAGS=$CFLAGS |
289 | CFLAGS="$CFLAGS -D_GNU_SOURCE" | |
290 | ||
b3231c17 MD |
291 | AC_CHECK_TYPES([cpu_set_t], |
292 | [have_cpu_set_t="yes"], | |
293 | [have_cpu_set_t="no"], | |
294 | [#include <sched.h>]) | |
295 | ||
296 | # Confirm that we have CPU_ZERO, and it actually works. | |
297 | AC_MSG_CHECKING([whether CPU_ZERO works]) | |
298 | AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works]) | |
299 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ | |
300 | #define _GNU_SOURCE | |
301 | #include <sched.h> | |
302 | int main() | |
303 | { | |
304 | cpu_set_t foo; CPU_ZERO(&foo); | |
305 | return 0; | |
306 | } | |
307 | ]]) | |
308 | ],[ | |
309 | AC_DEFINE(HAVE_CPU_ZERO, 1) | |
310 | AC_MSG_RESULT([yes]) | |
311 | ],[ | |
312 | AC_MSG_RESULT([no]) | |
313 | ]) | |
314 | ||
315 | # Confirm that we have CPU_SET, and it actually works. | |
316 | AC_MSG_CHECKING([whether CPU_SET works]) | |
317 | AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works]) | |
318 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ | |
319 | #define _GNU_SOURCE | |
320 | #include <sched.h> | |
321 | int main() | |
322 | { | |
323 | cpu_set_t foo, mask; CPU_SET(0, &foo); | |
324 | return 0; | |
325 | } | |
326 | ]]) | |
327 | ],[ | |
328 | AC_DEFINE(HAVE_CPU_SET, 1) | |
329 | AC_MSG_RESULT([yes]) | |
330 | ],[ | |
331 | AC_MSG_RESULT([no]) | |
332 | ]) | |
333 | ||
d8540fc5 | 334 | # First check if the function is available at all. |
a6412536 AM |
335 | AC_CHECK_FUNCS([sched_setaffinity],[ |
336 | # Okay, we have it. Check if also have cpu_set_t. If we don't, | |
337 | # then we have the first version using unsigned long, and no | |
338 | # CPU_ZERO, etc. macros. If we do have cpu_set_t, we may have the | |
339 | # version with 2 or 3 arguments. In that case, CPU_ZERO, etc., | |
340 | # should also be present, but we confirm nonetheless. | |
341 | ||
b3231c17 MD |
342 | AS_IF([test "x$have_cpu_set_t" = "xyes"], [ |
343 | # We do have it. | |
a6412536 AM |
344 | # Check how many arguments does sched_setaffinity take. |
345 | # Should be 3 or 2. | |
346 | AC_MSG_CHECKING([how many arguments sched_setaffinity takes]) | |
ec5e2d14 | 347 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ |
a6412536 | 348 | #include <sched.h> |
fe0707ab MD |
349 | int main() |
350 | { | |
351 | cpu_set_t foo; | |
b3231c17 | 352 | sched_setaffinity(0, sizeof (foo), &foo); |
fe0707ab MD |
353 | return 0; |
354 | } | |
a6412536 AM |
355 | ]]) |
356 | ], | |
357 | [sched_set_affinity_args=3], | |
358 | [sched_set_affinity_args=2]) | |
b3231c17 MD |
359 | AC_DEFINE_UNQUOTED(SCHED_SETAFFINITY_ARGS, |
360 | $sched_set_affinity_args, | |
a6412536 AM |
361 | [Defined to sched_setaffinity's number of arguments.]) |
362 | AC_MSG_RESULT([$sched_set_affinity_args]) | |
363 | ],[ | |
364 | # No cpu_set_t, always 3 args. | |
365 | AC_DEFINE(SCHED_SETAFFINITY_ARGS, 3) | |
b3231c17 | 366 | ]) |
a6412536 | 367 | ]) |
d8540fc5 PA |
368 | |
369 | CFLAGS=$saved_CFLAGS | |
370 | ||
455b809a PB |
371 | AC_CONFIG_LINKS([ |
372 | urcu/arch.h:$ARCHSRC | |
a2e7bf9c | 373 | urcu/uatomic.h:$UATOMICSRC |
455b809a | 374 | ]) |
48d848c7 PMF |
375 | AC_CONFIG_FILES([ |
376 | Makefile | |
fe999c05 | 377 | doc/Makefile |
8bad63a0 | 378 | doc/examples/Makefile |
48d848c7 | 379 | tests/Makefile |
f5ab766e MD |
380 | tests/common/Makefile |
381 | tests/unit/Makefile | |
382 | tests/benchmark/Makefile | |
383 | tests/regression/Makefile | |
074c3a1b | 384 | tests/regression/regression_tests |
1b387491 | 385 | tests/utils/Makefile |
2260a36c YB |
386 | liburcu.pc |
387 | liburcu-bp.pc | |
a6412536 | 388 | liburcu-cds.pc |
2260a36c YB |
389 | liburcu-qsbr.pc |
390 | liburcu-mb.pc | |
391 | liburcu-signal.pc | |
48d848c7 PMF |
392 | ]) |
393 | AC_OUTPUT | |
a6412536 AM |
394 | |
395 | # Report on selected configure options | |
396 | AS_IF([test "x$def_smp_support" = "xyes"],[ | |
397 | AS_ECHO("SMP support enabled.") | |
398 | ],[ | |
399 | AS_ECHO("SMP support disabled.") | |
400 | ]) | |
75478b32 MD |
401 | |
402 | AS_IF([test "x$def_tls_detect" = "x"],[ | |
403 | AS_ECHO("Thread Local Storage (TLS): pthread_getspecific().") | |
404 | ],[ | |
405 | AS_ECHO("Thread Local Storage (TLS): $def_tls_detect.") | |
406 | ]) |