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