diff --git a/Makefile.am b/Makefile.am
index 347bb21..aa41ba3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,6 +3,8 @@
 
 ## Process this file with automake.
 
+CFLAGS += -std=c99 -L.libs
+
 libxdl_view_la_SOURCES = xdl_base_fr.c xdl_blank_obj.c xdl_image.c \
   xdl_bg.c xdl_img_rd.c xdl_film_img.c xdl_io_window.c \
   xdl_menu_area.c xdl_text_tab.c xdl_panel_itm.c \