option (BUILD_GTK "Build gtk-window-decorator and Gnome related toold" 1)
option (BUILD_METACITY "Gtk-window-decorator metacity theme support" 1)
option (BUILD_GNOME "GNOME integration" 1)

compiz_set (USE_GTK ${BUILD_GTK})
compiz_set (USE_METACITY ${BUILD_METACITY})
compiz_set (USE_GNOME ${BUILD_GNOME})

if (USE_GTK)
    pkg_check_modules (GTK_WINDOW_DECORATOR
	xrender>=0.8.4
	gtk+-3.0
	libwnck-3.0
	pangocairo
    )
    if (GTK_WINDOW_DECORATOR_FOUND)
        set (CMAKE_REQUIRED_FLAGS ${GTK_WINDOW_DECORATOR_CFLAGS})
        set (CMAKE_REQUIRED_LIBRARIES ${GTK_WINDOW_DECORATOR_LIBRARIES})
        list (FIND CMAKE_REQUIRED_FLAGS "-D_REENTRANT" REENTRANT_INDEX)
        if (REENTRANT_INDEX)
          list (REMOVE_AT CMAKE_REQUIRED_FLAGS REENTRANT_INDEX)
          list (APPEND CMAKE_REQUIRED_FLAGS "-D_REENTRANT=1")
        endif (REENTRANT_INDEX)
        set (CMAKE_REQUIRED_FLAGS "")
        set (CMAKE_REQUIRED_LIBRARIES "")

        if (USE_METACITY)
            pkg_check_modules (METACITY libmetacity-private>=3.16.0)
            if (NOT METACITY_FOUND)
                compiz_set (USE_METACITY 0)
            endif (NOT METACITY_FOUND)
        endif (USE_METACITY)

	if (USE_GNOME)
	    compiz_pkg_check_modules (GNOME_WINDOW_SETTINGS
		gnome-window-settings-2.0
		gnome-desktop-2.0
	    )

	    if (GNOME_WINDOW_SETTINGS_FOUND)
	        exec_program (${PKG_CONFIG_EXECUTABLE} 
		  ARGS "--variable=prefix gnome-window-settings-2.0" 
		  OUTPUT_VARIABLE windowsettingsdatadir
		)
		set (windowsettingsdatadir ${windowsettingsdatadir}/share)
		exec_program (${PKG_CONFIG_EXECUTABLE} 
		  ARGS "--variable=libdir gnome-window-settings-2.0"
		  OUTPUT_VARIABLE windowsettingslibdir
		)
	    else (GNOME_WINDOW_SETTINGS_FOUND)
		compiz_set (USE_GNOME 0)
	    endif (GNOME_WINDOW_SETTINGS_FOUND)
	endif (USE_GNOME)

    else (GTK_WINDOW_DECORATOR_FOUND)
	compiz_set (USE_GTK 0)
    endif (GTK_WINDOW_DECORATOR_FOUND)
endif (USE_GTK)

if (NOT USE_GTK)
    compiz_set (USE_METACITY 0)
endif (NOT USE_GTK)

configure_file (
    ${CMAKE_CURRENT_SOURCE_DIR}/config.h.gtk.in
    ${CMAKE_CURRENT_BINARY_DIR}/config.h
)

add_subdirectory (window-decorator)
add_subdirectory (gnome)