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], [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
  13 AC_CONFIG_HEADERS([config.h urcu/config.h])
  14
  15 # Keep at the end to do not pollute installed header.
  16 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.])
  17 AH_TEMPLATE([CONFIG_URCU_HAVE_FENCE], [Defined when on a system that has memory fence instructions.])
  18 AH_TEMPLATE([CONFIG_URCU_HAVE_FUTEX], [Defined when on a system with futex support.])
  19 AH_TEMPLATE([CONFIG_URCU_COMPAT_ARCH], [Compatibility mode for i386 which lacks
  20 cmpxchg instruction.])
  21
  22 # Checks for programs.
  23 AC_PROG_CC
  24 AC_PROG_MAKE_SET
  25 AC_PROG_LIBTOOL
  26
  27 # Checks for typedefs, structures, and compiler characteristics.
  28 AC_C_INLINE
  29 AC_TYPE_PID_T
  30 AC_TYPE_SIZE_T
  31
  32 # Checks for library functions.
  33 AC_FUNC_MALLOC
  34 AC_FUNC_MMAP
  35 AC_CHECK_FUNCS([bzero gettimeofday munmap strtoul])
  36
  37 # Find arch type
  38 case $target_cpu in
  39         i386) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
  40         i486) ARCHTYPE="x86";;
  41         i586) ARCHTYPE="x86";;
  42         i686) ARCHTYPE="x86";;
  43         x86_64) ARCHTYPE="x86";;
  44         powerpc) ARCHTYPE="ppc" ;;
  45         ppc64) ARCHTYPE="ppc" ;;
  46         powerpc64) ARCHTYPE="ppc" ;;
  47         ppc) ARCHTYPE="ppc" ;;
  48         s390) ARCHTYPE="s390" ;;
  49         s390x) ARCHTYPE="s390" ;;
  50         *) ARCHTYPE="unknown";;
  51 esac
  52
  53 if test "$ARCHTYPE" = "unknown"; then
  54         AC_MSG_ERROR([Unable to detect the architecture.])
  55 fi
  56 AC_SUBST(ARCHTYPE)
  57 AC_SUBST(SUBARCHTYPE)
  58
  59 [
  60 #if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586"; then
  61 #For now, using lock; addl compatibility mode even for i686, because the
  62 #Pentium III is seen as a i686, but lacks mfence instruction.
  63 #Only using fence for x86_64.
  64 if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586" -a "x$target_cpu" != "xi686"; then
  65 ]
  66         AC_DEFINE([CONFIG_URCU_HAVE_FENCE], [1])
  67 [
  68 fi
  69 ]
  70
  71 AC_MSG_CHECKING([sys_futex()])
  72 AC_TRY_COMPILE(
  73 [
  74 #include <sys/syscall.h>
  75 ],
  76 [
  77 #ifndef __NR_futex
  78 #error "futexes not available"
  79 #endif
  80 ],
  81 [
  82         AC_MSG_RESULT([yes])
  83         AC_DEFINE([CONFIG_URCU_HAVE_FUTEX], [1])
  84         compat_futex_test=0
  85 ]
  86 ,
  87 [
  88         AC_MSG_RESULT([no])
  89         compat_futex_test=1
  90 ]
  91 )
  92
  93 AM_CONDITIONAL([COMPAT_FUTEX], [ test "x$compat_futex_test" = "x1" ])
  94
  95 AM_CONDITIONAL([GCC_API], [test "x$ARCHTYPE" != xx86 -a "x$ARCHTYPE" != xppc])
  96
  97 AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = xx86compat ])
  98
  99 [
 100 if test "x$SUBARCHTYPE" = xx86compat; then
 101 ]
 102         AC_DEFINE([CONFIG_URCU_COMPAT_ARCH], [1])
 103 [
 104 fi
 105 ]
 106
 107 AC_ARG_ENABLE([smp-support], [  --disable-smp-support   Disable SMP support. Warning: only use this
 108                           on uniprocessor systems. [[default=enabled]]], [def_smp_support=$enableval], [def_smp_support="yes"])
 109
 110 [
 111 if test "$def_smp_support" = "no"; then
 112         echo "SMP support disabled."
 113 else
 114 ]
 115         AC_DEFINE([CONFIG_URCU_SMP], [1])
 116 [
 117         echo "SMP support enabled."
 118 fi
 119 ]
 120
 121 AC_CONFIG_FILES([
 122         Makefile
 123         tests/Makefile
 124 ])
 125 AC_OUTPUT