configure.ac

   1 #                                               -*- Autoconf -*-
   2 # Process this file with autoconf to produce a configure script.
   3
   4
   5 AC_INIT([userspace-rcu], [0.2.4], [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 $target_cpu in
  39         i386) ARCHTYPE="x86"; SUBARCHTYPE="x86compat" ;;
  40         i486) ARCHTYPE="x86";;
  41         i586) ARCHTYPE="x86";;
  42         i686) ARCHTYPE="x86";;
  43         x86_64) ARCHTYPE="x86";;
  44         powerpc) ARCHTYPE="ppc" ;;
  45         ppc64) ARCHTYPE="ppc" ;;
  46         powerpc64) ARCHTYPE="ppc" ;;
  47         ppc) ARCHTYPE="ppc" ;;
  48         s390) ARCHTYPE="s390" ;;
  49         s390x) ARCHTYPE="s390" ;;
  50         sparc) ARCHTYPE="sparc" ;;
  51         *) ARCHTYPE="unknown";;
  52 esac
  53
  54 if test "$ARCHTYPE" = "unknown"; then
  55         AC_MSG_ERROR([Unable to detect the architecture.])
  56 fi
  57 AC_SUBST(ARCHTYPE)
  58 AC_SUBST(SUBARCHTYPE)
  59
  60 [
  61 #if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586"; then
  62 #For now, using lock; addl compatibility mode even for i686, because the
  63 #Pentium III is seen as a i686, but lacks mfence instruction.
  64 #Only using fence for x86_64.
  65 if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586" -a "x$target_cpu" != "xi686"; then
  66 ]
  67         AC_DEFINE([CONFIG_URCU_HAVE_FENCE], [1])
  68 [
  69 fi
  70 ]
  71
  72 AC_MSG_CHECKING([sys_futex()])
  73 AC_TRY_COMPILE(
  74 [
  75 #include <sys/syscall.h>
  76 ],
  77 [
  78 #ifndef __NR_futex
  79 #error "futexes not available"
  80 #endif
  81 ],
  82 [
  83         AC_MSG_RESULT([yes])
  84         AC_DEFINE([CONFIG_URCU_HAVE_FUTEX], [1])
  85         compat_futex_test=0
  86 ]
  87 ,
  88 [
  89         AC_MSG_RESULT([no])
  90         compat_futex_test=1
  91 ]
  92 )
  93
  94 AM_CONDITIONAL([COMPAT_FUTEX], [ test "x$compat_futex_test" = "x1" ])
  95
  96 AM_CONDITIONAL([GCC_API], [test "x$ARCHTYPE" != xx86 -a "x$ARCHTYPE" != xppc])
  97
  98 AM_CONDITIONAL([COMPAT_ARCH], [test "x$SUBARCHTYPE" = xx86compat ])
  99
 100 [
 101 if test "x$SUBARCHTYPE" = xx86compat; then
 102 ]
 103         AC_DEFINE([CONFIG_URCU_COMPAT_ARCH], [1])
 104 [
 105 fi
 106 ]
 107
 108 AC_ARG_ENABLE([smp-support], [  --disable-smp-support   Disable SMP support. Warning: only use this
 109                           on uniprocessor systems. [[default=enabled]]], [def_smp_support=$enableval], [def_smp_support="yes"])
 110
 111 [
 112 if test "$def_smp_support" = "no"; then
 113         echo "SMP support disabled."
 114 else
 115 ]
 116         AC_DEFINE([CONFIG_URCU_SMP], [1])
 117 [
 118         echo "SMP support enabled."
 119 fi
 120 ]
 121
 122 AC_CONFIG_FILES([
 123         Makefile
 124         tests/Makefile
 125 ])
 126 AC_OUTPUT