AC_INIT(configure.in)

dnl ----------------------------------------------------------------
dnl append SVN revision to the version number
OSIRIONVERSION='0.1'
SVNREVISION=`svnversion $srcdir`

if test ! -z "$SVNREVISION"; then
	OSIRIONVERSION="${OSIRIONVERSION}_${SVNREVISION}"
fi

AM_CONFIG_HEADER(src/config.h)
AM_INIT_AUTOMAKE(osirion, $OSIRIONVERSION)

AC_LANG_CPLUSPLUS
AC_PROG_CXX
AM_PROG_LIBTOOL

dnl KDE_FIND_PATH(programm-name, variable-name, list of directories,
dnl     if-not-found, test-parameter)
AC_DEFUN([KDE_FIND_PATH],
[
   AC_MSG_CHECKING([for $1])
   if test -n "$$2"; then
        kde_cv_path="$$2";
   else
        kde_cache=`echo $1 | sed 'y%./+-%__p_%'`

        AC_CACHE_VAL(kde_cv_path_$kde_cache,
        [
        kde_cv_path="NONE"
        dirs="$3"
        kde_save_IFS=$IFS
        IFS=':'
        for dir in $PATH; do
          dirs="$dirs $dir"
        done
        IFS=$kde_save_IFS

        for dir in $dirs; do
          if test -x "$dir/$1"; then
            if test -n "$5"
            then
              evalstr="$dir/$1 $5 2>&1 "
              if eval $evalstr; then
                kde_cv_path="$dir/$1"
                break
              fi
            else
                kde_cv_path="$dir/$1"
                break
            fi
          fi
        done

        eval "kde_cv_path_$kde_cache=$kde_cv_path"

        ])

      eval "kde_cv_path=\"`echo '$kde_cv_path_'$kde_cache`\""

   fi

   if test -z "$kde_cv_path" || test "$kde_cv_path" = NONE; then
      AC_MSG_RESULT(not found)
      $4
   else
      AC_MSG_RESULT($kde_cv_path)
      $2=$kde_cv_path

   fi
])

dnl ----------------------------------------------------------------
dnl HOST dependend variables
dnl 
AC_MSG_CHECKING([host type])
case "$host" in
        *-*-mingw*)
                HOST_LIBS="-lws2_32 -lz"
                HOST_GL_LIBS="-lopengl32 -lglu32"
		HOST_AL_LIBS="-lOpenAL32"
		ICON_CLIENT="osirion-res.o"
		ICON_SERVER="osiriond-res.o"
		INSTALLTYPE="single directory"
                AC_MSG_RESULT(win32)
                ;;
        *)
                HOST_LIBS="-lz"
                HOST_GL_LIBS="-lGL -lGLU"
		HOST_AL_LIBS="-lopenal"
		ICON_CLIENT=""
		ICON_SERVER=""
		INSTALLTYPE="standard"
                AC_MSG_RESULT(generic unix)
                ;;
esac
AC_SUBST(HOST_LIBS)
AC_SUBST(ICON_CLIENT)
AC_SUBST(ICON_SERVER)

dnl ----------------------------------------------------------------
dnl enable compiler warnings or not
dnl
AC_MSG_CHECKING(whether to abort on compiler warnings)
WARN_CFLAGS=""
AC_ARG_ENABLE(warn,
        AC_HELP_STRING(
                [--disable-warn], [don't abort on compiler warnings]
        ),
        AC_MSG_RESULT(no),
        AC_MSG_RESULT(yes)
        WARN_CFLAGS="$WARN_CFLAGS -Wall -Werror"
)
AC_SUBST(WARN_CFLAGS)

dnl ----------------------------------------------------------------
dnl enable DEBUG messages or not
dnl
AC_MSG_CHECKING(whether to include debug messages)
AC_ARG_ENABLE(debug_messages,
	AC_HELP_STRING(
		[--disable-debug-messages], [build without extra debug information]
	),
	AC_MSG_RESULT(no),
	AC_MSG_RESULT(yes)
	AC_DEFINE_UNQUOTED(HAVE_DEBUG_MESSAGES, 1, [Defines if debug information is enabled])
)

dnl ----------------------------------------------------------------
dnl check for ncurses
dnl

HAVE_CURSES=no

AC_ARG_WITH(ncurses,
        AC_HELP_STRING([--without-ncurses],
                [don't include ncurses support]
        )
)

if test "x${with_ncurses}" != "xno"; then
        save_CPPFLAGS="$CPPFLAGS"
        CPPFLAGS="$CPPFLAGS $CURSES_CFLAGS"

        AC_CHECK_HEADER(ncurses.h,
                HAVE_CURSES=yes
                AC_DEFINE(HAVE_CURSES, 1, [Define this if you have ncurses])
                CURSES_LIBS="$NCURSES_LIBS -lncurses",
                HAVE_CURSES=no
        )

        CPPFLAGS="$save_CPPFLAGS"
fi
AC_SUBST(CURSES_CFLAGS)
AC_SUBST(CURSES_LIBS)

dnl ----------------------------------------------------------------
dnl build client and erer or dedicated server only
dnl
BUILD_CLIENT=no

AC_ARG_WITH(client,
	AC_HELP_STRING([--without-client], [do not build the client application])
)

AC_MSG_CHECKING(whether to build client)

if test "x${with_client}" = xno; then

	AC_MSG_RESULT(no)

else
	AC_MSG_RESULT(yes)

	BUILD_CLIENT=yes
	AC_DEFINE(BUILD_CLIENT, 1, [Define this to build a client])

	AC_CHECK_HEADER(GL/gl.h,
		HAVE_OPENGL=yes
		AC_DEFINE(HAVE_OPENGL, 1, [Define this if you have OpenGL]),
		AC_MSG_WARN([OpenGL include file GL/gl.h not found])
	)
	
	AC_CHECK_HEADER(GL/glext.h,
		HAVE_OPENGL_GLEXT=yes
		AC_DEFINE(HAVE_OPENGL_GLEXT, 1, [Define this if you have OpenGL Extensions]),
		AC_MSG_ERROR([OpenGL include file GL/glext.h not found])
	)
	
	GL_LIBS="$HOST_GL_LIBS"
	
	AC_SUBST(GL_LIBS)
	AC_SUBST(GL_CFLAGS)

	AC_CHECK_HEADER(png.h,
		HAVE_OPENGL=yes
		AC_DEFINE(HAVE_PNG, 1, [Define this if you have libpng]),
		AC_MSG_WARN([libpng include file png.h not found])
	)

	LIBPNG_LIBS="-lpng"
	AC_SUBST(LIBPNG_LIBS)

	AC_CHECK_HEADER(AL/al.h,
		HAVE_OPENGL=yes
		AC_DEFINE(HAVE_OPENAL, 1, [Define this if you have OpenAL]),
		AC_MSG_ERROR([OpenAL include file AL/al.h not found])
	)
	
	AL_LIBS="$HOST_AL_LIBS"
	AC_SUBST(AL_LIBS)
	
	AC_MSG_CHECKING([looking for SDL])
	KDE_FIND_PATH(sdl-config, LIBSDL_CONFIG, [${prefix}/bin ${exec_prefix}/bin /usr/local/bin /opt/local/bin], [
		AC_MSG_ERROR([SDL not found])
	])
	
	if test -n "$LIBSDL_CONFIG"; then
	LIBSDL_LIBS="`$LIBSDL_CONFIG --libs`"
	LIBSDL_RPATH=
	for args in $LIBSDL_LIBS; do
		case $args in
		-L*)
		LIBSDL_RPATH="$LIBSDL_RPATH $args"
		;;
		esac
	done
	LIBSDL_RPATH=`echo $LIBSDL_RPATH | sed -e "s/-L/-R/g"`
	LIBSDL_CFLAGS="`$LIBSDL_CONFIG --cflags`"
	
	AC_DEFINE_UNQUOTED(HAVE_LIBSDL, 1, [Defines if your system has the LIBSDL library])
	fi
	
	AC_MSG_RESULT($HAVE_LIBSDL)
	
	AC_SUBST(LIBSDL_LIBS)
	AC_SUBST(LIBSDL_CFLAGS)
	AC_SUBST(LIBSDL_RPATH)
fi

CXXFLAGS="-pipe $DEBUG_CFLAGS $WARN_CFLAGS $CXXFLAGS"
AC_SUBST(CXXFLAGS)

dnl ---------------------------------------------------------------
dnl   Installation paths

AC_MSG_CHECKING(installation type)
AC_ARG_ENABLE(single_directory,
        AC_HELP_STRING(
                [--enable-single-directory], [install everything in a single directory]
        ),
        AC_MSG_RESULT(single directory)
	INSTALLTYPE="single directory",
        AC_MSG_RESULT(standard)
	INSTALLTYPE="standard"
)

if test "x${INSTALLTYPE}" = xstandard; then
	test "$prefix" = "NONE" && prefix="/usr/local"
	bindir="$prefix/bin"
	pkgdatadir="$prefix/share/${PACKAGE}"
	docdir="$pkgdatadir/doc"
else
	test "$prefix" = "NONE" && prefix="/opt/games/$PACKAGE"
	bindir="$prefix"
	pkgdatadir="$prefix"
	docdir="$prefix/doc"
fi

PACKAGE_DATADIR="$pkgdatadir/data"

AC_DEFINE_UNQUOTED(PACKAGE_DATADIR, "$PACKAGE_DATADIR",
	[Define this to the path containing the game data.]
)

dnl ---------------------------------------------------------------
dnl    Write makefiles and config.h

AM_CONDITIONAL(BUILD_CLIENT, test "x$BUILD_CLIENT" = xyes)
AM_CONDITIONAL(BUILD_DEDICATED, test "x$BUILD_CLIENT" = xno)

AC_OUTPUT(Makefile src/Makefile src/audio/Makefile src/auxiliary/Makefile \
	src/client/Makefile src/core/Makefile src/filesystem/Makefile src/game/Makefile \
	src/math/Makefile src/model/Makefile src/render/Makefile src/server/Makefile src/sys/Makefile)

dnl ---------------------------------------------------------------
dnl   Configuration summary

AC_MSG_RESULT([
The Osirion Project $VERSION

Configuration summary:
	platform ........... $host
	flags .............. $CXXFLAGS
	libraries .......... $HOST_LIBS
	ncurses ............ $HAVE_CURSES
	build client ....... $BUILD_CLIENT
	opengl ............. $GL_LIBS
	openal ............. $AL_LIBS

Installation directories:
	installation type .. $INSTALLTYPE
	prefix ............. $prefix
	binaries ........... $bindir
	documentation ...... $docdir
	game data .......... $PACKAGE_DATADIR
])