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