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