Index: libretro/Makefile
--- libretro/Makefile.orig
+++ libretro/Makefile
@@ -83,7 +83,7 @@ ifeq ($(platform), unix)
    EXT ?= so
    TARGET := $(TARGET_NAME)_libretro.$(EXT)
    fpic := -fPIC
-   SHARED := -shared -Wl,--version-script=$(CORE_DIR)/libretro/link.T -Wl,--no-undefined
+   SHARED := -shared -Wl,--version-script=$(CORE_DIR)/libretro/link.T
 else ifeq ($(platform), linux-portable)
    TARGET := $(TARGET_NAME)_libretro.$(EXT)
    fpic := -fPIC -nostdlib
@@ -306,7 +306,7 @@ LDFLAGS += $(LIBM)
 ifeq ($(DEBUG), 1)
    CFLAGS += -O0 -g
 else
-   CFLAGS += -O2 -DNDEBUG
+   CFLAGS += -DNDEBUG
 endif
 
 include Makefile.common