set(CPPFILES
  Fl.cxx
  Fl_Adjuster.cxx
  Fl_Bitmap.cxx
  Fl_Browser.cxx
  Fl_Browser_.cxx
  Fl_Browser_load.cxx
  Fl_Box.cxx
  Fl_Button.cxx
  Fl_Chart.cxx
  Fl_Check_Browser.cxx
  Fl_Check_Button.cxx
  Fl_Choice.cxx
  Fl_Clock.cxx
  Fl_Color_Chooser.cxx
  Fl_Copy_Surface.cxx
  Fl_Counter.cxx
  Fl_Device.cxx
  Fl_Dial.cxx
  Fl_Help_Dialog_Dox.cxx
  Fl_Double_Window.cxx
  Fl_File_Browser.cxx
  Fl_File_Chooser.cxx
  Fl_File_Chooser2.cxx
  Fl_File_Icon.cxx
  Fl_File_Input.cxx
  Fl_Group.cxx
  Fl_Help_View.cxx
  Fl_Image.cxx
  Fl_Image_Surface.cxx
  Fl_Input.cxx
  Fl_Input_.cxx
  Fl_Light_Button.cxx
  Fl_Menu.cxx
  Fl_Menu_.cxx
  Fl_Menu_Bar.cxx
  Fl_Menu_Button.cxx
  Fl_Menu_Window.cxx
  Fl_Menu_add.cxx
  Fl_Menu_global.cxx
  Fl_Multi_Label.cxx
  Fl_Native_File_Chooser.cxx
  Fl_Overlay_Window.cxx
  Fl_Pack.cxx
  Fl_Paged_Device.cxx
  Fl_Pixmap.cxx
  Fl_Positioner.cxx
  Fl_PostScript.cxx
  Fl_Printer.cxx
  Fl_Preferences.cxx
  Fl_Progress.cxx
  Fl_Repeat_Button.cxx
  Fl_Return_Button.cxx
  Fl_Roller.cxx
  Fl_Round_Button.cxx
  Fl_Scroll.cxx
  Fl_Scrollbar.cxx
  Fl_Shared_Image.cxx
  Fl_Single_Window.cxx
  Fl_Slider.cxx
  Fl_Table.cxx
  Fl_Table_Row.cxx
  Fl_Tabs.cxx
  Fl_Text_Buffer.cxx
  Fl_Text_Display.cxx
  Fl_Text_Editor.cxx
  Fl_Tile.cxx
  Fl_Tiled_Image.cxx
  Fl_Tooltip.cxx
  Fl_Tree.cxx
  Fl_Tree_Item_Array.cxx
  Fl_Tree_Item.cxx
  Fl_Tree_Prefs.cxx
  Fl_Valuator.cxx
  Fl_Value_Input.cxx
  Fl_Value_Output.cxx
  Fl_Value_Slider.cxx
  Fl_Widget.cxx
  Fl_Window.cxx
  Fl_Window_fullscreen.cxx
  Fl_Window_hotspot.cxx
  Fl_Window_iconize.cxx
  Fl_Window_shape.cxx
  Fl_Wizard.cxx
  Fl_XBM_Image.cxx
  Fl_XPM_Image.cxx
  Fl_abort.cxx
  Fl_add_idle.cxx
  Fl_arg.cxx
  Fl_compose.cxx
  Fl_display.cxx
  Fl_get_key.cxx
  Fl_get_system_colors.cxx
  Fl_grab.cxx
  Fl_lock.cxx
  Fl_own_colormap.cxx
  Fl_visual.cxx
  Fl_x.cxx
  filename_absolute.cxx
  filename_expand.cxx
  filename_ext.cxx
  filename_isdir.cxx
  filename_list.cxx
  filename_match.cxx
  filename_setext.cxx
  fl_arc.cxx
  fl_arci.cxx
  fl_ask.cxx
  fl_boxtype.cxx
  fl_color.cxx
  fl_cursor.cxx
  fl_curve.cxx
  fl_diamond_box.cxx
  fl_dnd.cxx
  fl_draw.cxx
  fl_draw_image.cxx
  fl_draw_pixmap.cxx
  fl_engraved_label.cxx
  fl_file_dir.cxx
  fl_font.cxx
  fl_gleam.cxx
  fl_gtk.cxx
  fl_labeltype.cxx
  fl_line_style.cxx
  fl_open_uri.cxx
  fl_oval_box.cxx
  fl_overlay.cxx
  fl_overlay_visual.cxx
  fl_plastic.cxx
  fl_read_image.cxx
  fl_rect.cxx
  fl_round_box.cxx
  fl_rounded_box.cxx
  fl_set_font.cxx
  fl_set_fonts.cxx
  fl_scroll_area.cxx
  fl_shadow_box.cxx
  fl_shortcut.cxx
  fl_show_colormap.cxx
  fl_symbols.cxx
  fl_vertex.cxx
  ps_image.cxx
  screen_xywh.cxx
  fl_utf8.cxx
  fl_encoding_latin1.cxx
  fl_encoding_mac_roman.cxx
)

set(FLCPPFILES
  forms_compatability.cxx
  forms_bitmap.cxx
  forms_free.cxx
  forms_fselect.cxx
  forms_pixmap.cxx
  forms_timer.cxx
)

set(GLCPPFILES
  Fl_Gl_Choice.cxx
  Fl_Gl_Device_Plugin.cxx
  Fl_Gl_Overlay.cxx
  Fl_Gl_Window.cxx
  freeglut_geometry.cxx
  freeglut_stroke_mono_roman.cxx
  freeglut_stroke_roman.cxx
  freeglut_teapot.cxx
  gl_draw.cxx
  gl_start.cxx
  glut_compatability.cxx
  glut_font.cxx
)

set(IMGCPPFILES
  fl_images_core.cxx
  Fl_BMP_Image.cxx
  Fl_File_Icon2.cxx
  Fl_GIF_Image.cxx
  Fl_Help_Dialog.cxx
  Fl_JPEG_Image.cxx
  Fl_PNG_Image.cxx
  Fl_PNM_Image.cxx
)

set(CFILES
  flstring.c
  scandir.c
  numericsort.c
  vsnprintf.c
  xutf8/is_right2left.c
  xutf8/is_spacing.c
  xutf8/case.c
  xutf8/utf8Input.c
  xutf8/utf8Utils.c
  xutf8/utf8Wrap.c
  xutf8/keysym2Ucs.c
  fl_utf.c
)

if (APPLE AND NOT OPTION_APPLE_X11)
    set(MMFILES
        Fl_cocoa.mm
        Fl_Quartz_Printer.mm
        Fl_Native_File_Chooser_MAC.mm
        Fl_Sys_Menu_Bar.mm
        )
else()
   set(MMFILES
      )
endif (APPLE AND NOT OPTION_APPLE_X11)

#######################################################################

# prepare source files for shared and static FLTK libraries

set (SHARED_FILES ${CPPFILES} ${MMFILES} ${CFILES})

set (STATIC_FILES ${SHARED_FILES})

if (WIN32)
    list(APPEND STATIC_FILES fl_call_main.c)
endif (WIN32)

add_definitions(-DFL_LIBRARY)

#######################################################################

# prepare optional libs for shared and static FLTK libraries

set (OPTIONAL_LIBS)

if (LIB_dl)
    list(APPEND OPTIONAL_LIBS ${LIB_dl})
endif (LIB_dl)

if (USE_THREADS)
    list(APPEND OPTIONAL_LIBS ${CMAKE_THREAD_LIBS_INIT})
endif (USE_THREADS)

if (USE_X11)
    list(APPEND OPTIONAL_LIBS ${X11_LIBRARIES})
endif (USE_X11)

if (WIN32)
    list(APPEND OPTIONAL_LIBS comctl32)
endif (WIN32)

if (FLTK_HAVE_CAIRO)
    list(APPEND OPTIONAL_LIBS fltk_cairo ${PKG_CAIRO_LIBRARIES})
ENDif (FLTK_HAVE_CAIRO)

if (HAVE_XINERAMA)
    list(APPEND OPTIONAL_LIBS ${X11_Xinerama_LIB})
endif (HAVE_XINERAMA)

if (HAVE_XFIXES)
    list(APPEND OPTIONAL_LIBS ${X11_Xfixes_LIB})
endif (HAVE_XFIXES)

if (HAVE_XCURSOR)
    list(APPEND OPTIONAL_LIBS ${X11_Xcursor_LIB})
endif (HAVE_XCURSOR)

if (HAVE_XRENDER)
    list(APPEND OPTIONAL_LIBS ${X11_Xrender_LIB})
endif (HAVE_XRENDER)

if (USE_XFT)
    list(APPEND OPTIONAL_LIBS ${X11_Xft_LIB})
    if (LIB_fontconfig)
	list(APPEND OPTIONAL_LIBS ${LIB_fontconfig})
    endif (LIB_fontconfig)
endif (USE_XFT)

#######################################################################

FL_ADD_LIBRARY(fltk STATIC "${STATIC_FILES}")
target_link_libraries(fltk ${OPTIONAL_LIBS})

#######################################################################

FL_ADD_LIBRARY(fltk_forms STATIC "${FLCPPFILES}")
target_link_libraries(fltk_forms fltk)

#######################################################################

FL_ADD_LIBRARY(fltk_images STATIC "${IMGCPPFILES}")
target_link_libraries(fltk_images fltk)

if (OPTION_USE_SYSTEM_LIBJPEG)
    target_link_libraries(fltk_images ${FLTK_JPEG_LIBRARIES})
else()
    target_link_libraries(fltk_images fltk_jpeg)
endif (OPTION_USE_SYSTEM_LIBJPEG)

if (OPTION_USE_SYSTEM_ZLIB)
    target_link_libraries(fltk_images ${FLTK_ZLIB_LIBRARIES})
else()
    target_link_libraries(fltk_images fltk_z)
endif (OPTION_USE_SYSTEM_ZLIB)

if (OPTION_USE_SYSTEM_LIBPNG)
    target_link_libraries(fltk_images ${FLTK_PNG_LIBRARIES})
else()
    target_link_libraries(fltk_images fltk_png)
endif (OPTION_USE_SYSTEM_LIBPNG)

#######################################################################

if (OPENGL_FOUND)
   FL_ADD_LIBRARY(fltk_gl STATIC "${GLCPPFILES}")
   target_link_libraries(fltk_gl fltk ${OPENGL_LIBRARIES})
endif (OPENGL_FOUND)

#######################################################################
# Build shared libraries (optional)
#######################################################################

# Note to devs: As of 08 Aug 2016 we can build shared libs (dlls)
# under Windows with Visual Studio (MSVC) but we can't link for instance
# fltk_images_SHARED with fltk_SHARED - we have to use fltk, i.e. the
# "static" object library instead. I don't know how to fix this, but
# at least we can build shared libraries (dlls) with Visual Studio.
# AlbrechtS

if (OPTION_BUILD_SHARED_LIBS)

    FL_ADD_LIBRARY(fltk SHARED "${SHARED_FILES}")
    target_link_libraries(fltk_SHARED ${OPTIONAL_LIBS})

    ###################################################################

    FL_ADD_LIBRARY(fltk_forms SHARED "${FLCPPFILES}")
    if (MSVC)
      target_link_libraries(fltk_forms_SHARED fltk)
    else ()
      target_link_libraries(fltk_forms_SHARED fltk_SHARED)
    endif (MSVC)

    ###################################################################

    FL_ADD_LIBRARY(fltk_images SHARED "${IMGCPPFILES}")
    if (MSVC)
      target_link_libraries(fltk_images_SHARED fltk)
    else ()
      target_link_libraries(fltk_images_SHARED fltk_SHARED)
    endif (MSVC)

    if (OPTION_USE_SYSTEM_LIBJPEG)
	target_link_libraries(fltk_images_SHARED ${FLTK_JPEG_LIBRARIES})
    else()
	target_link_libraries(fltk_images_SHARED fltk_jpeg_SHARED)
    endif (OPTION_USE_SYSTEM_LIBJPEG)

    if (OPTION_USE_SYSTEM_LIBPNG)
	target_link_libraries(fltk_images_SHARED ${FLTK_PNG_LIBRARIES})
    else()
	target_link_libraries(fltk_images_SHARED fltk_png_SHARED)
    endif (OPTION_USE_SYSTEM_LIBPNG)

    if (OPTION_USE_SYSTEM_ZLIB)
	target_link_libraries(fltk_images_SHARED ${FLTK_ZLIB_LIBRARIES})
    else()
	target_link_libraries(fltk_images_SHARED fltk_z_SHARED)
    endif (OPTION_USE_SYSTEM_ZLIB)

    ###################################################################

    if (OPENGL_FOUND)
      FL_ADD_LIBRARY(fltk_gl SHARED "${GLCPPFILES}")
      if (MSVC)
	target_link_libraries(fltk_gl_SHARED fltk ${OPENGL_LIBRARIES})
      else ()
	target_link_libraries(fltk_gl_SHARED fltk_SHARED ${OPENGL_LIBRARIES})
      endif (MSVC)
    endif (OPENGL_FOUND)

endif (OPTION_BUILD_SHARED_LIBS)

#######################################################################