diff -Nru gpac.old/modules/img_in/Makefile gpac/modules/img_in/Makefile
--- work/gpac.old/modules/img_in/Makefile	2010-03-09 10:41:29.281572649 +0000
+++ work/gpac/modules/img_in/Makefile	2010-03-09 10:42:08.394573261 +0000
@@ -26,7 +26,7 @@
 else
 OBJS+=jp2_dec.o
 LINKLIBS+= -lopenjpeg
-CFLAGS+=-DGPAC_HAS_JP2
+CFLAGS+=-DGPAC_HAS_JP2 -std=c99
 #local openjpeg lib
 ifeq ($(CONFIG_JP2), local)
 NEED_LOCAL_LIB="yes"