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