dnl Process this file with autoconf to produce a configure script.

AC_INIT(include/divine.h)

AC_PREREQ(2.52)

#
# Making releases:
#   DIVINE_MICRO_VERSION += 1;
#   DIVINE_INTERFACE_AGE += 1;
#   DIVINE_BINARY_AGE += 1;
# if any functions have been added, set DIVINE_INTERFACE_AGE to 0.
# if backwards compatibility has been broken,
# set DIVINE_BINARY_AGE and DIVINE_INTERFACE_AGE to 0.
#
DIVINE_MAJOR_VERSION=0
DIVINE_MINOR_VERSION=4
DIVINE_MICRO_VERSION=0
DIVINE_INTERFACE_AGE=0
DIVINE_BINARY_AGE=0
DIVINE_VERSION=$DIVINE_MAJOR_VERSION.$DIVINE_MINOR_VERSION.$DIVINE_MICRO_VERSION

AC_SUBST(DIVINE_MAJOR_VERSION)
AC_SUBST(DIVINE_MINOR_VERSION)
AC_SUBST(DIVINE_MICRO_VERSION)
AC_SUBST(DIVINE_INTERFACE_AGE)
AC_SUBST(DIVINE_BINARY_AGE)
AC_SUBST(DIVINE_VERSION)

AC_DEFINE_UNQUOTED(DIVINE_VERSION, "$DIVINE_VERSION", [DiVine Version])
AC_DEFINE_UNQUOTED(DIVINE_MAJOR_VERSION, $DIVINE_MAJOR_VERSION,
					 [DiVine major version number])
AC_DEFINE_UNQUOTED(DIVINE_MINOR_VERSION, $DIVINE_MINOR_VERSION,
                                         [DiVine minor version number])

# libtool versioning
LT_RELEASE=$DIVINE_MAJOR_VERSION.$DIVINE_MINOR_VERSION
LT_CURRENT=`expr $DIVINE_MICRO_VERSION - $DIVINE_INTERFACE_AGE`
LT_REVISION=$DIVINE_INTERFACE_AGE
LT_AGE=`expr $DIVINE_BINARY_AGE - $DIVINE_INTERFACE_AGE`

AC_SUBST(LT_RELEASE)
AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)

# For automake.
VERSION=$DIVINE_VERSION
PACKAGE=DiVine

AM_INIT_AUTOMAKE($PACKAGE, $VERSION, no-define)
AM_CONFIG_HEADER(config.h)
AM_MAINTAINER_MODE
AC_DISABLE_STATIC
AC_PROG_CC
AM_PROG_LIBTOOL
AM_SANITY_CHECK
AC_ISC_POSIX
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_HEADER_STDC


dnl Clear default CFLAGS
if test x"$CFLAGS" = x"-g -O2"; then
  CFLAGS=
fi
  
CFLAGS="-O3 -pipe $CFLAGS"

if test "x$GCC" = xyes; then
  CFLAGS="-Wall $CFLAGS"
fi


AM_CONDITIONAL(BUILD_STATIC, test "$enable_static" = "yes")


#
# Find pkg-config
#
AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
if test x$PKG_CONFIG = xno ; then
  AC_MSG_ERROR([*** pkg-config not found. See http://pkgconfig.sourceforge.net])
fi

if ! pkg-config --atleast-pkgconfig-version 0.9 ; then
  AC_MSG_ERROR([*** pkg-config too old; version 0.9 or better required.])  
fi


#
# Check for DirectFB
#
DIRECTFB_REQUIRED_VERSION=1.0.0

AC_MSG_CHECKING(for DirectFB)
  if $PKG_CONFIG --atleast-version $DIRECTFB_REQUIRED_VERSION directfb ; then
        DIRECTFB_CFLAGS=`$PKG_CONFIG --cflags directfb`
        DIRECTFB_LIBS=`$PKG_CONFIG --libs directfb`
        AC_MSG_RESULT(found)
  else
    	AC_MSG_ERROR([*** DirectFB $DIRECTFB_REQUIRED_VERSION or newer is required. ])
  fi
 

#
# Check for DirectFB-Internal
#
AC_MSG_CHECKING(for DirectFB-Internal)
  if $PKG_CONFIG --atleast-version $DIRECTFB_REQUIRED_VERSION directfb-internal ; then
        MODULEDIR=$libdir/`$PKG_CONFIG --variable=moduledirname directfb-internal`
        DIRECTFB_INTERNAL_CFLAGS=`$PKG_CONFIG --cflags directfb-internal`
        AC_MSG_RESULT(found)
  else
    	AC_MSG_ERROR([*** DirectFB-Internal $DIRECTFB_REQUIRED_VERSION or newer is required. ])
  fi


AC_SUBST(DIRECTFB_CFLAGS)
AC_SUBST(DIRECTFB_LIBS)
AC_SUBST(MODULEDIR)
AC_SUBST(DIRECTFB_INTERNAL_CFLAGS)

CFLAGS="$CFLAGS -Werror-implicit-function-declaration"

AC_OUTPUT([
divine-config
divine.pc     
Makefile
driver/Makefile
examples/Makefile
lib/Makefile
include/Makefile
proxy/Makefile
proxy/dispatcher/Makefile
proxy/requestor/Makefile
rules/Makefile
], [chmod +x divine-config])