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AC_INIT(configure.in)

dnl ----------------------------------------------------------------
dnl append SVN revision to the version number
OSIRIONVERSION='0.1.0'
SVNREVISION=`svnversion $srcdir`

if test ! -z "$SVNREVISION"; then
	OSIRIONVERSION="${OSIRIONVERSION}-svn${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
	*-apple-darwin*)
		HOST_LIBS="-lz"
		HOST_GL_LIBS="-framework OpenGL"
		HOST_AL_LIBS="-framework OpenAL"
		HOST_SDL_LIBS="-framework SDL -framework Cocoa"
		ICON_CLIENT=""
		ICON_SERVER=""
		SDLMAIN="SDLMain.o"
		INSTALLTYPE="application bundle"
		OS=OSX
                AC_MSG_RESULT(OS X)
		AC_DEFINE_UNQUOTED(_OSX, 1, [Define this if you're building for native OS X])
		AC_PROG_OBJC
		;;
		
        *-*-mingw*)
                HOST_LIBS="-lws2_32 -lz"
                HOST_GL_LIBS="-lopengl32"
		HOST_AL_LIBS="-lopenal32"
		ICON_CLIENT="osirion-res.o"
		ICON_SERVER="osiriond-res.o"
		SDLMAIN=""
		INSTALLTYPE="single directory"
		OS=WIN32
                AC_MSG_RESULT(win32)
                ;;
        *)
                HOST_LIBS="-lz"
                HOST_GL_LIBS="-lGL"
		HOST_AL_LIBS="-lopenal"
		ICON_CLIENT=""
		ICON_SERVER=""
		SDLMAIN=""
		INSTALLTYPE="standard"
                AC_MSG_RESULT(generic unix)
		OS=UNIX
                ;;
esac
AC_SUBST(OS)
AC_SUBST(HOST_LIBS)
AC_SUBST(ICON_CLIENT)
AC_SUBST(ICON_SERVER)
AC_SUBST(SDLMAIN)

AC_DEFINE(OS, $OS, [Operating System])

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 curses
dnl

HAVE_CURSES=no

AC_ARG_WITH(curses,
        AC_HELP_STRING([--without-curses],
                [do not include curses support]
        )
)

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

	AC_CHECK_HEADER(curses.h,
		HAVE_CURSES="maybe",
		HAVE_CURSES="no"
	)

	if test "x${HAVE_CURSES}" = "xmaybe"; then
		AC_CHECK_LIB(ncurses, initscr,
			HAVE_CURSES="ncurses"
			AC_DEFINE(HAVE_CURSES, ncurses, [Define this if you have the curses library])
			CURSES_LIBS="$CURSES_LIBS -lncurses",
			HAVE_CURSES="maybe"
		)
	fi

	if test "x${HAVE_CURSES}" = "xmaybe"; then
		AC_CHECK_LIB(pdcurses, initscr,
			HAVE_CURSES="pdcurses"
			AC_DEFINE(HAVE_CURSES, pdcurses, [Define this if you have the curses library])
			CURSES_LIBS="$CURSES_LIBS -lpdcurses",
			HAVE_CURSES="maybe"
		)
	fi

	if test "x${HAVE_CURSES}" = "xmaybe"; then
		AC_CHECK_LIB(curses, initscr,
			HAVE_CURSES="curses"
			AC_DEFINE(HAVE_CURSES, curses, [Define this if you have the curses library])
			CURSES_LIBS="$CURSES_LIBS -lcurses",
			HAVE_CURSES="maybe"
		)
	fi


	if test "x${HAVE_CURSES}" = "xmaybe"; then
		HAVE_CURSES=no
	fi

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

dnl ----------------------------------------------------------------
dnl zlib
dnl

AC_CHECK_HEADER(zlib.h, 
	[],
	AC_MSG_ERROR([zlib.h not found])
)

AC_CHECK_LIB(z, compress,
	[],
	AC_MSG_ERROR([zlib not found])
)

dnl ----------------------------------------------------------------
dnl build client and server 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)

	LDFLAGS_save="$LDFLAGS"

	dnl ---------------------------------------------------------------
	dnl OpenGL
	dnl
	
	if test "x${OS}" = "xOSX"; then
		AC_CHECK_HEADER(OpenGL/gl.h,
			[],
			[AC_MSG_ERROR([OpenGL/gl.h not found])]
		)
	else
		AC_CHECK_HEADER(GL/gl.h,
			[],
			[AC_MSG_ERROR([GL/gl.h not found])]
		)
	fi
	
	LD_FLAGS="$LDFLAGS_save"
	GL_LIBS="$HOST_GL_LIBS"
	AC_SUBST(GL_LIBS)
	AC_SUBST(GL_CFLAGS)

	dnl ---------------------------------------------------------------
	dnl OpenAL
	
	if test "x${OS}" = "xOSX"; then
		AC_CHECK_HEADER(OpenAL/al.h,
			[],
			[AC_MSG_ERROR([OpenAL/al.h not found])]
		)
	else
		AC_CHECK_HEADER(AL/al.h,
			[],
			[AC_MSG_ERROR([AL/al.h not found])]
		)
	fi
	
	LD_FLAGS="$LDFLAGS_save"
	AL_LIBS="$HOST_AL_LIBS"
	AC_SUBST(AL_LIBS)
	AC_SUBST(AL_CFLAGS)
	
	dnl ---------------------------------------------------------------
	dnl libpng
	dnl
	
	AC_CHECK_HEADER(png.h, 
		[],
		[AC_MSG_ERROR([png.h not found])]
	)
	AC_CHECK_LIB(png, png_create_info_struct,
		HAVE_LIBPNG=yes,
		[AC_MSG_ERROR([libpng not found])]
	)
	
	LIBPNG_LIBS="-lpng"
	AC_SUBST(LIBPNG_LIBS)

	dnl ---------------------------------------------------------------
	dnl libjpeg
	dnl
	
	AC_CHECK_HEADER(jpeglib.h,
			[],
			[AC_MSG_ERROR([jpeglib.h not found])]
	)
	AC_CHECK_LIB(jpeg, jpeg_start_decompress,
		HAVE_LIBJPEG=yes
		AC_DEFINE_UNQUOTED(HAVE_LIBJPEG, 1, [Define this if you have libjpeg]),
		AC_MSG_ERROR([libjpeg not found])
	)
	LIBJPG_LIBS="-ljpeg"
	AC_SUBST(LIBJPG_LIBS)

	dnl ---------------------------------------------------------------
	dnl SDL
	dnl

	if test "x${OS}" = "xOSX"; then
		AC_CHECK_HEADER(SDL/SDL.h,
			[],
			[AC_MSG_ERROR([SDL/SDL.h not found])]
		)
		
		LIBSDL_LIBS="$HOST_SDL_LIBS"
		LIBSDL_CFLAGS="$HOST_SDL_LIBS"
		AC_SUBST(LIBSDL_LIBS)
		AC_SUBST(LIBSDL_CFLAGS)		
	else
		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`"
		fi
		
		AC_MSG_RESULT($HAVE_LIBSDL)
		
		AC_SUBST(LIBSDL_LIBS)
		AC_SUBST(LIBSDL_CFLAGS)
		AC_SUBST(LIBSDL_RPATH)
	fi

	BUILD_CLIENT=yes
	AC_DEFINE_UNQUOTED(BUILD_CLIENT, 1, [Define this to build the client])
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(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/dedicated/Makefile src/filesystem/Makefile \
	src/game/Makefile src/game/base/Makefile src/game/example/Makefile src/game/intro/Makefile \
	src/math/Makefile src/model/Makefile src/render/Makefile src/sys/Makefile src/ui/Makefile)

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

AC_MSG_RESULT([
The Osirion Project $VERSION

Configuration summary:
	platform ........... $host
	flags .............. $CXXFLAGS
	libraries .......... $HOST_LIBS $LIBJPG_LIBS $LIBPNG_LIBS
	curses ............. $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
])