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48d848c7 PMF |
1 | # -*- Autoconf -*- |
2 | # Process this file with autoconf to produce a configure script. | |
3 | ||
4 | ||
ca617caf | 5 | AC_INIT([userspace-rcu],[0.8.0],[mathieu dot desnoyers at efficios dot com]) |
98bc124a YB |
6 | |
7 | # Following the numbering scheme proposed by libtool for the library version | |
8 | # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html | |
45e60038 | 9 | AC_SUBST([URCU_LIBRARY_VERSION], [3:0:0]) |
98bc124a | 10 | |
48d848c7 | 11 | AC_CONFIG_AUX_DIR([config]) |
a6412536 | 12 | AC_CONFIG_MACRO_DIR([config]) |
7d413817 MD |
13 | AC_CANONICAL_TARGET |
14 | AC_CANONICAL_HOST | |
48d848c7 | 15 | AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip]) |
35eb2d6c | 16 | AM_MAINTAINER_MODE([enable]) |
806f8114 PB |
17 | m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) |
18 | ||
a767fdc3 MD |
19 | m4_include([config/ax_tls.m4]) |
20 | ||
48d848c7 | 21 | AC_CONFIG_SRCDIR([urcu.h]) |
7d413817 | 22 | |
e72596d1 MD |
23 | AC_CONFIG_HEADERS([config.h urcu/config.h]) |
24 | ||
02be5561 MD |
25 | 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.]) |
26 | AH_TEMPLATE([CONFIG_RCU_HAVE_FENCE], [Defined when on a system that has memory fence instructions.]) | |
27 | AH_TEMPLATE([CONFIG_RCU_HAVE_FUTEX], [Defined when on a system with futex support.]) | |
a6412536 AM |
28 | AH_TEMPLATE([CONFIG_RCU_COMPAT_ARCH], [Compatibility mode for i386 which lacks cmpxchg instruction.]) |
29 | AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for use on ARM.]) | |
a767fdc3 MD |
30 | AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.]) |
31 | ||
75478b32 MD |
32 | # Allow overriding storage used for TLS variables. |
33 | AC_ARG_ENABLE([compiler-tls], | |
34 | AS_HELP_STRING([--disable-compiler-tls], [Use pthread_getspecific() to emulate Thread Local Storage (TLS) variables.]), | |
35 | [def_compiler_tls=$enableval], | |
36 | [def_compiler_tls="yes"]) | |
37 | ||
38 | # If not overridden, use ax_tls.m4 to check if TLS is available. | |
39 | AS_IF([test "x$def_compiler_tls" = "xyes"], | |
40 | [AX_TLS([def_tls_detect=$ac_cv_tls], [:])], | |
41 | [:]) | |
42 | ||
43 | AS_IF([test "x$def_tls_detect" = "x"], | |
44 | [:], | |
45 | [AC_DEFINE_UNQUOTED([CONFIG_RCU_TLS], $def_tls_detect)]) | |
48d848c7 PMF |
46 | |
47 | # Checks for programs. | |
48 | AC_PROG_CC | |
49 | AC_PROG_MAKE_SET | |
b14a378a | 50 | LT_INIT |
48d848c7 PMF |
51 | |
52 | # Checks for typedefs, structures, and compiler characteristics. | |
53 | AC_C_INLINE | |
54 | AC_TYPE_PID_T | |
55 | AC_TYPE_SIZE_T | |
56 | ||
57 | # Checks for library functions. | |
58 | AC_FUNC_MALLOC | |
59 | AC_FUNC_MMAP | |
7590a58f JR |
60 | AC_CHECK_FUNCS( |
61 | [bzero gettimeofday munmap sched_getcpu strtoul sysconf gettid memeset strerror] | |
62 | ) | |
48d848c7 PMF |
63 | |
64 | # Find arch type | |
58e9f838 | 65 | AS_CASE([$host_cpu], |
a6412536 AM |
66 | [i386], [ARCHTYPE="x86" && SUBARCHTYPE="x86compat"], |
67 | [i486], [ARCHTYPE="x86"], | |
68 | [i586], [ARCHTYPE="x86"], | |
69 | [i686], [ARCHTYPE="x86"], | |
70 | [amd64], [ARCHTYPE="x86"], | |
71 | [x86_64], [ARCHTYPE="x86"], | |
72 | [powerpc], [ARCHTYPE="ppc"], | |
73 | [ppc64], [ARCHTYPE="ppc"], | |
74 | [powerpc64], [ARCHTYPE="ppc"], | |
3913336f | 75 | [powerpc64le], [ARCHTYPE="gcc"], |
a6412536 AM |
76 | [ppc], [ARCHTYPE="ppc"], |
77 | [s390], [ARCHTYPE="s390"], | |
78 | [s390x], [ARCHTYPE="s390"], | |
171ff3a3 | 79 | [sparc], [ARCHTYPE="sparc64"], |
a6412536 AM |
80 | [sparc64], [ARCHTYPE="sparc64"], |
81 | [alpha*], [ARCHTYPE="alpha"], | |
82 | [ia64], [ARCHTYPE="gcc"], | |
83 | [arm*], [ARCHTYPE="arm"], | |
3913336f | 84 | [aarch64], [ARCHTYPE="gcc"], |
e1259cb1 | 85 | [mips*], [ARCHTYPE="mips"], |
274773cf | 86 | [tile*], [ARCHTYPE="gcc"], |
13e0bc72 | 87 | [hppa*], [ARCHTYPE="hppa"], |
a6412536 AM |
88 | [ARCHTYPE="unknown"] |
89 | ) | |
91b0650a | 90 | |
de41725c CB |
91 | AS_CASE([$host],[*-*-linux-androideabi], |
92 | [AM_CONDITIONAL(TARGET_IS_ANDROID, true)], | |
93 | [AM_CONDITIONAL(TARGET_IS_ANDROID, false)] | |
94 | ) | |
95 | ||
a6412536 AM |
96 | AC_SUBST(ARCHTYPE) |
97 | AC_SUBST(SUBARCHTYPE) | |
5e626e0e | 98 | |
a2e7bf9c | 99 | UATOMICSRC=urcu/uatomic/$ARCHTYPE.h |
1b9119f8 | 100 | ARCHSRC=urcu/arch/$ARCHTYPE.h |
455b809a | 101 | |
a6412536 AM |
102 | AS_IF([test "x$SUBARCHTYPE" = xx86compat],[ |
103 | AC_DEFINE([CONFIG_RCU_COMPAT_ARCH], [1]) | |
104 | ]) | |
105 | ||
58e9f838 | 106 | AS_IF([test "$host_cpu" = "armv7l"],[ |
a6412536 AM |
107 | CFLAGS="$CFLAGS -mcpu=cortex-a9 -mtune=cortex-a9 -O1" |
108 | ]) | |
48d848c7 | 109 | |
a6412536 AM |
110 | # ARM-specific checks |
111 | AS_IF([test "x$ARCHTYPE" = "xarm"],[ | |
112 | AC_MSG_CHECKING([for dmb instruction]) | |
fe0707ab MD |
113 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ |
114 | int main() | |
115 | { | |
116 | asm volatile("dmb":::"memory"); | |
117 | return 0; | |
118 | } | |
119 | ]]) | |
120 | ],[ | |
a6412536 AM |
121 | AC_MSG_RESULT([yes]) |
122 | AC_DEFINE([CONFIG_RCU_ARM_HAVE_DMB], [1]) | |
123 | ],[ | |
124 | AC_MSG_RESULT([no]) | |
125 | ]) | |
126 | ]) | |
127 | ||
274773cf SM |
128 | # Tile-specific checks |
129 | AS_IF([echo "$host_cpu" | grep "^tile"],[ | |
130 | AC_MSG_CHECKING([for Tile architecture type]) | |
131 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
132 | #ifndef __tilegx__ | |
133 | #error | |
134 | #endif | |
135 | ]]) | |
136 | ],[ | |
137 | AC_MSG_RESULT([ok]) | |
138 | ],[ | |
139 | 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.]) | |
140 | ]) | |
141 | ]) | |
142 | ||
a6412536 AM |
143 | # x86-specific checks |
144 | AS_IF([test "x$ARCHTYPE" = "xx86"],[ | |
145 | AC_MSG_CHECKING([if architecture really supports the mfence instruction]) | |
146 | #For now, using lock; addl compatibility mode even for i686, because the | |
147 | #Pentium III is seen as a i686, but lacks mfence instruction. | |
148 | #Only using fence for x86_64. | |
8496c886 SM |
149 | # |
150 | #k1om is the name for the Intel MIC family (Xeon Phi). It is an x86_64 | |
151 | #variant but lacks fence instructions. | |
152 | AS_IF([test "x$host_cpu" != "xi386" -a "x$host_cpu" != "xi486" -a "x$host_cpu" != "xi586" -a "x$host_cpu" != "xi686" -a "x$host_vendor" != "xk1om"],[ | |
a6412536 AM |
153 | AC_MSG_RESULT([yes]) |
154 | AC_DEFINE([CONFIG_RCU_HAVE_FENCE], [1]) | |
155 | ],[ | |
156 | AC_MSG_RESULT([no]) | |
157 | ]) | |
158 | ]) | |
159 | ||
160 | # Check if sys_futex() is available | |
161 | AC_MSG_CHECKING([for sys_futex()]) | |
fe0707ab | 162 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ |
a6412536 | 163 | #include <sys/syscall.h> |
a6412536 AM |
164 | #ifndef __NR_futex |
165 | #error "futexes not available" | |
166 | #endif | |
fe0707ab | 167 | ]]) |
a6412536 | 168 | ],[ |
0854ccff | 169 | AC_MSG_RESULT([yes]) |
02be5561 | 170 | AC_DEFINE([CONFIG_RCU_HAVE_FUTEX], [1]) |
0854ccff | 171 | compat_futex_test=0 |
91b0650a | 172 | ],[ |
0854ccff MD |
173 | AC_MSG_RESULT([no]) |
174 | compat_futex_test=1 | |
91b0650a | 175 | ]) |
0854ccff | 176 | |
0e1efa0e CB |
177 | # Check for pthread |
178 | AC_CHECK_LIB([pthread], [pthread_create], | |
179 | [AM_CONDITIONAL(LIBC_INCLUDES_PTHREAD, false)], | |
180 | [AC_CHECK_LIB([c], [pthread_create], | |
181 | [AM_CONDITIONAL(LIBC_INCLUDES_PTHREAD, true)], | |
182 | [AC_MSG_ERROR([Cannot find libpthread. Use [LDFLAGS]=-Ldir to specify its location.])] | |
183 | )] | |
184 | ) | |
185 | ||
a6412536 AM |
186 | AM_CONDITIONAL([COMPAT_FUTEX], [test "x$compat_futex_test" = "x1"]) |
187 | AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = "xx86compat"]) | |
2f49a496 | 188 | AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"]) |
0854ccff | 189 | |
a6412536 AM |
190 | # smp-support configure option |
191 | AC_ARG_ENABLE([smp-support], | |
192 | AS_HELP_STRING([--disable-smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems. [default=enabled]]), | |
193 | [def_smp_support=$enableval], | |
194 | [def_smp_support="yes"]) | |
195 | AS_IF([test "x$def_smp_support" = "xyes"], [AC_DEFINE([CONFIG_RCU_SMP], [1])]) | |
7d413817 | 196 | |
48d848c7 | 197 | |
d8540fc5 PA |
198 | # From the sched_setaffinity(2)'s man page: |
199 | # ~~~~ | |
200 | # The CPU affinity system calls were introduced in Linux kernel 2.5.8. | |
201 | # The library interfaces were introduced in glibc 2.3. Initially, the | |
202 | # glibc interfaces included a cpusetsize argument. In glibc 2.3.3, | |
203 | # the cpuset size argument was removed, but this argument was | |
204 | # restored in glibc 2.3.4. | |
205 | # ~~~~ | |
206 | ||
207 | # In addition to that, some vendors ported the system call to 2.4 | |
208 | # kernels. | |
209 | ||
210 | # Furthermore, when the function first appeared, the MASK argument was | |
211 | # an unsigned long pointer, while later it was made into a cpu_set_t | |
212 | # pointer. Systems that have the cpu_set_t version also should have | |
213 | # the CPU_ZERO, CPU_SET, etc. macros. | |
214 | ||
215 | # All this mess means we have to cater for at least 3 different | |
216 | # sched_setaffinity prototypes: | |
217 | ||
218 | # ~~~~ | |
219 | # int sched_setaffinity (pid_t pid, unsigned int len, unsigned long *mask); | |
220 | # int sched_setaffinity (pid_t __pid, size_t __cpusetsize, const cpu_set_t *__cpuset); | |
221 | # int sched_setaffinity (pid_t __pid, const cpu_set_t *__mask); | |
222 | # ~~~~ | |
223 | ||
a6412536 AM |
224 | # Since we define _GNU_SOURCE in the sources, must do so too in the |
225 | # autoconf tests, as defining _GNU_SOURCE or not exposes | |
226 | # sched_setaffinity bits differently. | |
d8540fc5 PA |
227 | saved_CFLAGS=$CFLAGS |
228 | CFLAGS="$CFLAGS -D_GNU_SOURCE" | |
229 | ||
b3231c17 MD |
230 | AC_CHECK_TYPES([cpu_set_t], |
231 | [have_cpu_set_t="yes"], | |
232 | [have_cpu_set_t="no"], | |
233 | [#include <sched.h>]) | |
234 | ||
235 | # Confirm that we have CPU_ZERO, and it actually works. | |
236 | AC_MSG_CHECKING([whether CPU_ZERO works]) | |
237 | AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works]) | |
238 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ | |
239 | #define _GNU_SOURCE | |
240 | #include <sched.h> | |
241 | int main() | |
242 | { | |
243 | cpu_set_t foo; CPU_ZERO(&foo); | |
244 | return 0; | |
245 | } | |
246 | ]]) | |
247 | ],[ | |
248 | AC_DEFINE(HAVE_CPU_ZERO, 1) | |
249 | AC_MSG_RESULT([yes]) | |
250 | ],[ | |
251 | AC_MSG_RESULT([no]) | |
252 | ]) | |
253 | ||
254 | # Confirm that we have CPU_SET, and it actually works. | |
255 | AC_MSG_CHECKING([whether CPU_SET works]) | |
256 | AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works]) | |
257 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ | |
258 | #define _GNU_SOURCE | |
259 | #include <sched.h> | |
260 | int main() | |
261 | { | |
262 | cpu_set_t foo, mask; CPU_SET(0, &foo); | |
263 | return 0; | |
264 | } | |
265 | ]]) | |
266 | ],[ | |
267 | AC_DEFINE(HAVE_CPU_SET, 1) | |
268 | AC_MSG_RESULT([yes]) | |
269 | ],[ | |
270 | AC_MSG_RESULT([no]) | |
271 | ]) | |
272 | ||
d8540fc5 | 273 | # First check if the function is available at all. |
a6412536 AM |
274 | AC_CHECK_FUNCS([sched_setaffinity],[ |
275 | # Okay, we have it. Check if also have cpu_set_t. If we don't, | |
276 | # then we have the first version using unsigned long, and no | |
277 | # CPU_ZERO, etc. macros. If we do have cpu_set_t, we may have the | |
278 | # version with 2 or 3 arguments. In that case, CPU_ZERO, etc., | |
279 | # should also be present, but we confirm nonetheless. | |
280 | ||
b3231c17 MD |
281 | AS_IF([test "x$have_cpu_set_t" = "xyes"], [ |
282 | # We do have it. | |
a6412536 AM |
283 | # Check how many arguments does sched_setaffinity take. |
284 | # Should be 3 or 2. | |
285 | AC_MSG_CHECKING([how many arguments sched_setaffinity takes]) | |
ec5e2d14 | 286 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ |
a6412536 | 287 | #include <sched.h> |
fe0707ab MD |
288 | int main() |
289 | { | |
290 | cpu_set_t foo; | |
b3231c17 | 291 | sched_setaffinity(0, sizeof (foo), &foo); |
fe0707ab MD |
292 | return 0; |
293 | } | |
a6412536 AM |
294 | ]]) |
295 | ], | |
296 | [sched_set_affinity_args=3], | |
297 | [sched_set_affinity_args=2]) | |
b3231c17 MD |
298 | AC_DEFINE_UNQUOTED(SCHED_SETAFFINITY_ARGS, |
299 | $sched_set_affinity_args, | |
a6412536 AM |
300 | [Defined to sched_setaffinity's number of arguments.]) |
301 | AC_MSG_RESULT([$sched_set_affinity_args]) | |
302 | ],[ | |
303 | # No cpu_set_t, always 3 args. | |
304 | AC_DEFINE(SCHED_SETAFFINITY_ARGS, 3) | |
b3231c17 | 305 | ]) |
a6412536 | 306 | ]) |
d8540fc5 PA |
307 | |
308 | CFLAGS=$saved_CFLAGS | |
309 | ||
455b809a PB |
310 | AC_CONFIG_LINKS([ |
311 | urcu/arch.h:$ARCHSRC | |
a2e7bf9c | 312 | urcu/uatomic.h:$UATOMICSRC |
455b809a | 313 | ]) |
48d848c7 PMF |
314 | AC_CONFIG_FILES([ |
315 | Makefile | |
fe999c05 | 316 | doc/Makefile |
8bad63a0 | 317 | doc/examples/Makefile |
48d848c7 | 318 | tests/Makefile |
f5ab766e MD |
319 | tests/common/Makefile |
320 | tests/unit/Makefile | |
321 | tests/benchmark/Makefile | |
322 | tests/regression/Makefile | |
2260a36c YB |
323 | liburcu.pc |
324 | liburcu-bp.pc | |
a6412536 | 325 | liburcu-cds.pc |
2260a36c YB |
326 | liburcu-qsbr.pc |
327 | liburcu-mb.pc | |
328 | liburcu-signal.pc | |
48d848c7 PMF |
329 | ]) |
330 | AC_OUTPUT | |
a6412536 AM |
331 | |
332 | # Report on selected configure options | |
333 | AS_IF([test "x$def_smp_support" = "xyes"],[ | |
334 | AS_ECHO("SMP support enabled.") | |
335 | ],[ | |
336 | AS_ECHO("SMP support disabled.") | |
337 | ]) | |
75478b32 MD |
338 | |
339 | AS_IF([test "x$def_tls_detect" = "x"],[ | |
340 | AS_ECHO("Thread Local Storage (TLS): pthread_getspecific().") | |
341 | ],[ | |
342 | AS_ECHO("Thread Local Storage (TLS): $def_tls_detect.") | |
343 | ]) |