Port: Add Solaris build instructions
[urcu.git] / configure.ac
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1AC_PREREQ(2.59)
2AC_INIT([userspace-rcu],[0.8.0],[mathieu dot desnoyers at efficios dot com], [], [http://liburcu.org/])
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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
45e60038 6AC_SUBST([URCU_LIBRARY_VERSION], [3:0:0])
98bc124a 7
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8AC_CONFIG_SRCDIR([urcu.h])
9AC_CONFIG_HEADERS([config.h urcu/config.h])
48d848c7 10AC_CONFIG_AUX_DIR([config])
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11AC_CONFIG_MACRO_DIR([m4])
12
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13AC_CANONICAL_TARGET
14AC_CANONICAL_HOST
074c3a1b 15
48d848c7 16AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip])
35eb2d6c 17AM_MAINTAINER_MODE([enable])
7d413817 18
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19# Enable silent rules if available (Introduced in AM 1.11)
20m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
e72596d1 21
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22AH_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.])
23AH_TEMPLATE([CONFIG_RCU_HAVE_FENCE], [Defined when on a system that has memory fence instructions.])
24AH_TEMPLATE([CONFIG_RCU_HAVE_FUTEX], [Defined when on a system with futex support.])
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25AH_TEMPLATE([CONFIG_RCU_COMPAT_ARCH], [Compatibility mode for i386 which lacks cmpxchg instruction.])
26AH_TEMPLATE([CONFIG_RCU_ARM_HAVE_DMB], [Use the dmb instruction if available for use on ARM.])
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27AH_TEMPLATE([CONFIG_RCU_TLS], [TLS provided by the compiler.])
28
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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], $def_tls_detect)])
48d848c7 43
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44# Checks for C compiler
45AC_USE_SYSTEM_EXTENSIONS
48d848c7 46AC_PROG_CC
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47AC_PROG_CC_STDC
48
49# Checks for programs.
48d848c7 50AC_PROG_MAKE_SET
074c3a1b 51AC_CHECK_PROGS(NPROC, [nproc gnproc])
b14a378a 52LT_INIT
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53
54# Checks for typedefs, structures, and compiler characteristics.
55AC_C_INLINE
56AC_TYPE_PID_T
57AC_TYPE_SIZE_T
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58AC_TYPE_INT32_T
59AC_TYPE_UINT32_T
60AC_TYPE_UINT64_T
61AC_TYPE_UINT8_T
48d848c7 62
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63AX_C___ATTRIBUTE__
64AS_IF([test "x$ax_cv___attribute__" = "xyes"],
65 [:],
66 [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])
67
68AX_PTHREAD(,[AC_MSG_ERROR([Could not configure pthreads support])])
69LIBS="$PTHREAD_LIBS $LIBS"
70CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
71CC="$PTHREAD_CC"
72
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73# Checks for library functions.
74AC_FUNC_MALLOC
75AC_FUNC_MMAP
7590a58f 76AC_CHECK_FUNCS(
a47dd11c 77 [memset gettimeofday munmap sched_getcpu getcpuid strtoul sysconf gettid memeset strerror]
7590a58f 78)
48d848c7 79
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80# Check for headers
81AC_CHECK_HEADERS([limits.h stddef.h sys/time.h])
82
48d848c7 83# Find arch type
58e9f838 84AS_CASE([$host_cpu],
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85 [i386], [ARCHTYPE="x86" && SUBARCHTYPE="x86compat"],
86 [i486], [ARCHTYPE="x86"],
87 [i586], [ARCHTYPE="x86"],
88 [i686], [ARCHTYPE="x86"],
89 [amd64], [ARCHTYPE="x86"],
90 [x86_64], [ARCHTYPE="x86"],
91 [powerpc], [ARCHTYPE="ppc"],
92 [ppc64], [ARCHTYPE="ppc"],
93 [powerpc64], [ARCHTYPE="ppc"],
61126bd9 94 [powerpc64le], [ARCHTYPE="ppc"],
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95 [ppc], [ARCHTYPE="ppc"],
96 [s390], [ARCHTYPE="s390"],
97 [s390x], [ARCHTYPE="s390"],
171ff3a3 98 [sparc], [ARCHTYPE="sparc64"],
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99 [sparc64], [ARCHTYPE="sparc64"],
100 [alpha*], [ARCHTYPE="alpha"],
c21a8d01 101 [ia64], [ARCHTYPE="ia64"],
a6412536 102 [arm*], [ARCHTYPE="arm"],
3aea2ae0 103 [aarch64], [ARCHTYPE="aarch64"],
e1259cb1 104 [mips*], [ARCHTYPE="mips"],
c23069c6 105 [tile*], [ARCHTYPE="tile"],
13e0bc72 106 [hppa*], [ARCHTYPE="hppa"],
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107 [ARCHTYPE="unknown"]
108)
91b0650a 109
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110AS_CASE([$host],[*-*-linux-androideabi],
111 [AM_CONDITIONAL(TARGET_IS_ANDROID, true)],
112 [AM_CONDITIONAL(TARGET_IS_ANDROID, false)]
113)
114
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115AC_SUBST(ARCHTYPE)
116AC_SUBST(SUBARCHTYPE)
5e626e0e 117
a2e7bf9c 118UATOMICSRC=urcu/uatomic/$ARCHTYPE.h
1b9119f8 119ARCHSRC=urcu/arch/$ARCHTYPE.h
455b809a 120
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121AS_IF([test "x$SUBARCHTYPE" = xx86compat],[
122 AC_DEFINE([CONFIG_RCU_COMPAT_ARCH], [1])
123])
124
58e9f838 125AS_IF([test "$host_cpu" = "armv7l"],[
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126 CFLAGS="$CFLAGS -mcpu=cortex-a9 -mtune=cortex-a9 -O1"
127])
48d848c7 128
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129# ARM-specific checks
130AS_IF([test "x$ARCHTYPE" = "xarm"],[
131 AC_MSG_CHECKING([for dmb instruction])
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132 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
133 int main()
134 {
135 asm volatile("dmb":::"memory");
136 return 0;
137 }
138 ]])
139 ],[
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140 AC_MSG_RESULT([yes])
141 AC_DEFINE([CONFIG_RCU_ARM_HAVE_DMB], [1])
142 ],[
143 AC_MSG_RESULT([no])
144 ])
145])
146
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147# Tile-specific checks
148AS_IF([echo "$host_cpu" | grep "^tile"],[
149 AC_MSG_CHECKING([for Tile architecture type])
150 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
151 #ifndef __tilegx__
152 #error
153 #endif
154 ]])
155 ],[
156 AC_MSG_RESULT([ok])
157 ],[
158 AC_MSG_FAILURE([URCU has only been tested on the TileGx architecture. For other Tile* architectures, please run the tests first and report the results to the maintainer so that proper support can be added.])
159 ])
160])
161
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162# x86-specific checks
163AS_IF([test "x$ARCHTYPE" = "xx86"],[
164 AC_MSG_CHECKING([if architecture really supports the mfence instruction])
165 #For now, using lock; addl compatibility mode even for i686, because the
166 #Pentium III is seen as a i686, but lacks mfence instruction.
167 #Only using fence for x86_64.
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168 #
169 #k1om is the name for the Intel MIC family (Xeon Phi). It is an x86_64
170 #variant but lacks fence instructions.
171 AS_IF([test "x$host_cpu" != "xi386" -a "x$host_cpu" != "xi486" -a "x$host_cpu" != "xi586" -a "x$host_cpu" != "xi686" -a "x$host_vendor" != "xk1om"],[
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172 AC_MSG_RESULT([yes])
173 AC_DEFINE([CONFIG_RCU_HAVE_FENCE], [1])
174 ],[
175 AC_MSG_RESULT([no])
176 ])
177])
178
179# Check if sys_futex() is available
180AC_MSG_CHECKING([for sys_futex()])
fe0707ab 181AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
a6412536 182 #include <sys/syscall.h>
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183 #ifndef __NR_futex
184 #error "futexes not available"
185 #endif
fe0707ab 186 ]])
a6412536 187],[
0854ccff 188 AC_MSG_RESULT([yes])
02be5561 189 AC_DEFINE([CONFIG_RCU_HAVE_FUTEX], [1])
0854ccff 190 compat_futex_test=0
91b0650a 191],[
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192 AC_MSG_RESULT([no])
193 compat_futex_test=1
91b0650a 194])
0854ccff 195
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196# Check for pthread
197AC_CHECK_LIB([pthread], [pthread_create],
198 [AM_CONDITIONAL(LIBC_INCLUDES_PTHREAD, false)],
199 [AC_CHECK_LIB([c], [pthread_create],
200 [AM_CONDITIONAL(LIBC_INCLUDES_PTHREAD, true)],
201 [AC_MSG_ERROR([Cannot find libpthread. Use [LDFLAGS]=-Ldir to specify its location.])]
202 )]
203)
204
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205AM_CONDITIONAL([COMPAT_FUTEX], [test "x$compat_futex_test" = "x1"])
206AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = "xx86compat"])
2f49a496 207AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
0854ccff 208
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209# smp-support configure option
210AC_ARG_ENABLE([smp-support],
211 AS_HELP_STRING([--disable-smp-support], [Disable SMP support. Warning: only use this on uniprocessor systems. [default=enabled]]),
212 [def_smp_support=$enableval],
213 [def_smp_support="yes"])
214AS_IF([test "x$def_smp_support" = "xyes"], [AC_DEFINE([CONFIG_RCU_SMP], [1])])
7d413817 215
48d848c7 216
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217# From the sched_setaffinity(2)'s man page:
218# ~~~~
219# The CPU affinity system calls were introduced in Linux kernel 2.5.8.
220# The library interfaces were introduced in glibc 2.3. Initially, the
221# glibc interfaces included a cpusetsize argument. In glibc 2.3.3,
222# the cpuset size argument was removed, but this argument was
223# restored in glibc 2.3.4.
224# ~~~~
225
226# In addition to that, some vendors ported the system call to 2.4
227# kernels.
228
229# Furthermore, when the function first appeared, the MASK argument was
230# an unsigned long pointer, while later it was made into a cpu_set_t
231# pointer. Systems that have the cpu_set_t version also should have
232# the CPU_ZERO, CPU_SET, etc. macros.
233
234# All this mess means we have to cater for at least 3 different
235# sched_setaffinity prototypes:
236
237# ~~~~
238# int sched_setaffinity (pid_t pid, unsigned int len, unsigned long *mask);
239# int sched_setaffinity (pid_t __pid, size_t __cpusetsize, const cpu_set_t *__cpuset);
240# int sched_setaffinity (pid_t __pid, const cpu_set_t *__mask);
241# ~~~~
242
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243# Since we define _GNU_SOURCE in the sources, must do so too in the
244# autoconf tests, as defining _GNU_SOURCE or not exposes
245# sched_setaffinity bits differently.
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246saved_CFLAGS=$CFLAGS
247CFLAGS="$CFLAGS -D_GNU_SOURCE"
248
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249AC_CHECK_TYPES([cpu_set_t],
250 [have_cpu_set_t="yes"],
251 [have_cpu_set_t="no"],
252 [#include <sched.h>])
253
254# Confirm that we have CPU_ZERO, and it actually works.
255AC_MSG_CHECKING([whether CPU_ZERO works])
256AH_TEMPLATE([HAVE_CPU_ZERO], [Defined to 1 if we have CPU_ZERO and it works])
257AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
258 #define _GNU_SOURCE
259 #include <sched.h>
260 int main()
261 {
262 cpu_set_t foo; CPU_ZERO(&foo);
263 return 0;
264 }
265 ]])
266],[
267 AC_DEFINE(HAVE_CPU_ZERO, 1)
268 AC_MSG_RESULT([yes])
269],[
270 AC_MSG_RESULT([no])
271])
272
273# Confirm that we have CPU_SET, and it actually works.
274AC_MSG_CHECKING([whether CPU_SET works])
275AH_TEMPLATE([HAVE_CPU_SET], [Defined to 1 if we have CPU_SET and it works])
276AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
277 #define _GNU_SOURCE
278 #include <sched.h>
279 int main()
280 {
281 cpu_set_t foo, mask; CPU_SET(0, &foo);
282 return 0;
283 }
284 ]])
285],[
286 AC_DEFINE(HAVE_CPU_SET, 1)
287 AC_MSG_RESULT([yes])
288],[
289 AC_MSG_RESULT([no])
290])
291
d8540fc5 292# First check if the function is available at all.
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293AC_CHECK_FUNCS([sched_setaffinity],[
294 # Okay, we have it. Check if also have cpu_set_t. If we don't,
295 # then we have the first version using unsigned long, and no
296 # CPU_ZERO, etc. macros. If we do have cpu_set_t, we may have the
297 # version with 2 or 3 arguments. In that case, CPU_ZERO, etc.,
298 # should also be present, but we confirm nonetheless.
299
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300 AS_IF([test "x$have_cpu_set_t" = "xyes"], [
301 # We do have it.
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302 # Check how many arguments does sched_setaffinity take.
303 # Should be 3 or 2.
304 AC_MSG_CHECKING([how many arguments sched_setaffinity takes])
ec5e2d14 305 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
a6412536 306 #include <sched.h>
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307 int main()
308 {
309 cpu_set_t foo;
b3231c17 310 sched_setaffinity(0, sizeof (foo), &foo);
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311 return 0;
312 }
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313 ]])
314 ],
315 [sched_set_affinity_args=3],
316 [sched_set_affinity_args=2])
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317 AC_DEFINE_UNQUOTED(SCHED_SETAFFINITY_ARGS,
318 $sched_set_affinity_args,
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319 [Defined to sched_setaffinity's number of arguments.])
320 AC_MSG_RESULT([$sched_set_affinity_args])
321 ],[
322 # No cpu_set_t, always 3 args.
323 AC_DEFINE(SCHED_SETAFFINITY_ARGS, 3)
b3231c17 324 ])
a6412536 325])
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326
327CFLAGS=$saved_CFLAGS
328
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329AC_CONFIG_LINKS([
330 urcu/arch.h:$ARCHSRC
a2e7bf9c 331 urcu/uatomic.h:$UATOMICSRC
455b809a 332])
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333AC_CONFIG_FILES([
334 Makefile
fe999c05 335 doc/Makefile
8bad63a0 336 doc/examples/Makefile
48d848c7 337 tests/Makefile
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338 tests/common/Makefile
339 tests/unit/Makefile
340 tests/benchmark/Makefile
341 tests/regression/Makefile
074c3a1b 342 tests/regression/regression_tests
1b387491 343 tests/utils/Makefile
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344 liburcu.pc
345 liburcu-bp.pc
a6412536 346 liburcu-cds.pc
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347 liburcu-qsbr.pc
348 liburcu-mb.pc
349 liburcu-signal.pc
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350])
351AC_OUTPUT
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352
353# Report on selected configure options
354AS_IF([test "x$def_smp_support" = "xyes"],[
355 AS_ECHO("SMP support enabled.")
356],[
357 AS_ECHO("SMP support disabled.")
358])
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359
360AS_IF([test "x$def_tls_detect" = "x"],[
361 AS_ECHO("Thread Local Storage (TLS): pthread_getspecific().")
362],[
363 AS_ECHO("Thread Local Storage (TLS): $def_tls_detect.")
364])
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