2 # Process this file with autoconf to produce a configure script.
5 AC_INIT([userspace-rcu], [0.2.3-alpha], [mathieu dot desnoyers at polymtl dot ca])
6 AC_CONFIG_AUX_DIR([config])
9 AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip])
10 AC_CONFIG_SRCDIR([urcu.h])
12 AH_TEMPLATE([CONFIG_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.])
13 AH_TEMPLATE([CONFIG_HAVE_FENCE], [Defined when on a system that has memory fence
15 AH_TEMPLATE([CONFIG_HAVE_FUTEX], [Defined when on a system with futex support.])
16 AC_CONFIG_HEADERS([urcu/config.h])
18 # Checks for programs.
23 # Checks for typedefs, structures, and compiler characteristics.
28 # Checks for library functions.
31 AC_CHECK_FUNCS([bzero gettimeofday munmap strtoul])
35 i386) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
36 i486) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
37 i586) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
38 i686) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
39 x86_64) ARCHTYPE="x86";;
40 powerpc) ARCHTYPE="ppc" ;;
41 ppc64) ARCHTYPE="ppc" ;;
42 powerpc64) ARCHTYPE="ppc" ;;
43 ppc) ARCHTYPE="ppc" ;;
44 s390) ARCHTYPE="s390" ;;
45 s390x) ARCHTYPE="s390" ;;
46 *) ARCHTYPE="unknown";;
49 if test "$ARCHTYPE" = "unknown"; then
50 AC_MSG_ERROR([Unable to detect the architecture.])
56 if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586"; then
58 AC_DEFINE([CONFIG_HAVE_FENCE], [1])
63 AC_MSG_CHECKING([presence of sys_futex()])
66 #include <sys/syscall.h>
70 #error "futexes not available"
75 AC_DEFINE([CONFIG_HAVE_FUTEX], [1])
85 AM_CONDITIONAL([COMPAT_FUTEX], [ test "x$compat_futex_test" = "x1" ])
87 AM_CONDITIONAL([GCC_API], [test "x$ARCHTYPE" != xx86 -a "x$ARCHTYPE" != xppc])
89 AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = xx86compat ])
91 AC_ARG_ENABLE([smp-support], [ --disable-smp-support Disable SMP support. Warning: only use this
92 on uniprocessor systems. [[default=enabled]]], [def_smp_support=$enableval], [def_smp_support="yes"])
95 if test "$def_smp_support" = "no"; then
96 echo "SMP support disabled."
99 AC_DEFINE([CONFIG_SMP], [1])
101 echo "SMP support enabled."