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