Using AM_PROG_MKDIR_P for compatibility
[urcu.git] / configure.ac
1 # -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
3
4
5 AC_INIT([userspace-rcu], [0.2.3-alpha], [mathieu dot desnoyers at polymtl dot ca])
6 AC_CONFIG_AUX_DIR([config])
7 AC_CANONICAL_TARGET
8 AC_CANONICAL_HOST
9 AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip])
10 AC_CONFIG_SRCDIR([urcu.h])
11 AM_PROG_MKDIR_P
12 AC_CONFIG_MACRO_DIR([m4])
13
14 AC_CONFIG_HEADERS([config.h urcu/config.h])
15
16 # Keep at the end to do not pollute installed header.
17 AH_TEMPLATE([CONFIG_URCU_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.])
18 AH_TEMPLATE([CONFIG_URCU_HAVE_FENCE], [Defined when on a system that has memory fence instructions.])
19 AH_TEMPLATE([CONFIG_URCU_HAVE_FUTEX], [Defined when on a system with futex support.])
20
21 # Checks for programs.
22 AC_PROG_CC
23 AC_PROG_MAKE_SET
24 AC_PROG_LIBTOOL
25
26 # Checks for typedefs, structures, and compiler characteristics.
27 AC_C_INLINE
28 AC_TYPE_PID_T
29 AC_TYPE_SIZE_T
30
31 # Checks for library functions.
32 AC_FUNC_MALLOC
33 AC_FUNC_MMAP
34 AC_CHECK_FUNCS([bzero gettimeofday munmap strtoul])
35
36 # Find arch type
37 case $target_cpu in
38 i386) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
39 i486) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
40 i586) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
41 i686) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
42 x86_64) ARCHTYPE="x86";;
43 powerpc) ARCHTYPE="ppc" ;;
44 ppc64) ARCHTYPE="ppc" ;;
45 powerpc64) ARCHTYPE="ppc" ;;
46 ppc) ARCHTYPE="ppc" ;;
47 s390) ARCHTYPE="s390" ;;
48 s390x) ARCHTYPE="s390" ;;
49 *) ARCHTYPE="unknown";;
50 esac
51
52 if test "$ARCHTYPE" = "unknown"; then
53 AC_MSG_ERROR([Unable to detect the architecture.])
54 fi
55 AC_SUBST(ARCHTYPE)
56 AC_SUBST(SUBARCHTYPE)
57
58 [
59 #if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586"; then
60 #For now, using lock; addl compatibility mode even for i686, because the
61 #Pentium III is seen as a i686, but lacks mfence instruction.
62 #Only using fence for x86_64.
63 if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586" -a "x$target_cpu" != "xi686"; then
64 ]
65 AC_DEFINE([CONFIG_URCU_HAVE_FENCE], [1])
66 [
67 fi
68 ]
69
70 AC_MSG_CHECKING([sys_futex()])
71 AC_TRY_COMPILE(
72 [
73 #include <sys/syscall.h>
74 ],
75 [
76 #ifndef __NR_futex
77 #error "futexes not available"
78 #endif
79 ],
80 [
81 AC_MSG_RESULT([yes])
82 AC_DEFINE([CONFIG_URCU_HAVE_FUTEX], [1])
83 compat_futex_test=0
84 ]
85 ,
86 [
87 AC_MSG_RESULT([no])
88 compat_futex_test=1
89 ]
90 )
91
92 AM_CONDITIONAL([COMPAT_FUTEX], [ test "x$compat_futex_test" = "x1" ])
93
94 AM_CONDITIONAL([GCC_API], [test "x$ARCHTYPE" != xx86 -a "x$ARCHTYPE" != xppc])
95
96 AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = xx86compat ])
97
98 AC_ARG_ENABLE([smp-support], [ --disable-smp-support Disable SMP support. Warning: only use this
99 on uniprocessor systems. [[default=enabled]]], [def_smp_support=$enableval], [def_smp_support="yes"])
100
101 [
102 if test "$def_smp_support" = "no"; then
103 echo "SMP support disabled."
104 else
105 ]
106 AC_DEFINE([CONFIG_URCU_SMP], [1])
107 [
108 echo "SMP support enabled."
109 fi
110 ]
111
112 AC_CONFIG_FILES([
113 Makefile
114 tests/Makefile
115 ])
116 AC_OUTPUT
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