--- fba_cores_cps1/makefile.libretro.orig	2015-10-31 20:25:45 UTC
+++ fba_cores_cps1/makefile.libretro
@@ -46,6 +46,7 @@ ifeq ($(platform), unix)
    TARGET := $(TARGET_NAME)_libretro.so
    fpic := -fPIC
    SHARED := -shared -Wl,-no-undefined -Wl,--version-script=$(LIBRETRO_DIR)/link.T
+   PLATFORM_DEFINES := -DUSE_FILE32API
 else ifeq ($(platform), osx)
    TARGET := $(TARGET_NAME)_libretro.dylib
    fpic := -fPIC