diff --git a/common.mk b/common.mk
index 5e041182..6cd0c72d 100644
--- a/common.mk
+++ b/common.mk
@@ -11,28 +11,28 @@ MAKEFILE_DIR := $(subst \,/,$(MAKEFILE_DIR))
 
 ifeq ($(OS),Windows_NT)
 	# Native Windows
-	SHELL := $(BIN)/sh.exe
-	RM := $(BIN)/rm.exe
-	CP := $(BIN)/cp.exe
-	MKDIR := $(BIN)/mkdir.exe
+	SHELL := $(BIN)/sh
+	RM := $(BIN)/rm
+	CP := $(BIN)/cp
+	MKDIR := $(BIN)/mkdir
 
-	AR := $(BIN)/ar.exe
-	CC := $(BIN)/gcc.exe
-	LD:= $(BIN)/ld.exe
-	NM:= $(BIN)/nm.exe
-	OBJCPY := $(BIN)/objcopy.exe
-	ASMZ80 := $(BIN)/sjasm.exe
-	MACCER := $(BIN)/mac68k.exe
-	BINTOS := $(BIN)/bintos.exe
-	LTO_PLUGIN := --plugin=liblto_plugin-0.dll
+	AR := $(BIN)/ar
+	CC := $(BIN)/gcc
+	LD:= $(BIN)/ld
+	NM:= $(BIN)/nm
+	OBJCPY := $(BIN)/objcopy
+	ASMZ80 := $(BIN)/sjasm
+	MACCER := $(BIN)/mac68k
+	BINTOS := $(BIN)/bintos
+	LTO_PLUGIN := --plugin=liblto_plugin.dll
 	LIBGCC := $(LIB)/libgcc.a
 else
 	# Native Linux and Docker
 	PREFIX ?= m68k-elf-
-	SHELL = sh
-	RM = rm
-	CP = cp
-	MKDIR = mkdir
+	SHELL := sh
+	RM := rm
+	CP := cp
+	MKDIR := mkdir
 
 	AR := $(PREFIX)ar
 	CC := $(PREFIX)gcc
diff --git a/lib/libmd.a b/lib/libmd.a
index bf4bbf68..e1f89272 100644
Binary files a/lib/libmd.a and b/lib/libmd.a differ
diff --git a/lib/libmd_debug.a b/lib/libmd_debug.a
index 704b93e2..049344b3 100644
Binary files a/lib/libmd_debug.a and b/lib/libmd_debug.a differ
diff --git a/makefile.gen b/makefile.gen
index 79afd9fd..e0c40288 100644
--- a/makefile.gen
+++ b/makefile.gen
@@ -65,7 +65,7 @@ DEFAULT_FLAGS= $(EXTRA_FLAGS) -DSGDK_GCC -m68000 -Wall -Wextra -Wno-shift-negati
 FLAGSZ80:= -i$(SRC) -i$(INCLUDE) -i$(RES) -i$(SRC_LIB) -i$(INCLUDE_LIB) -i$(INCLUDE_LIB)/snd
 
 #release: FLAGS= $(DEFAULT_FLAGS) -Os -fomit-frame-pointer -fuse-linker-plugin -flto
-release: FLAGS= $(DEFAULT_FLAGS) -O3 -fuse-linker-plugin -fno-web -fno-gcse -fomit-frame-pointer -flto
+release: FLAGS= $(DEFAULT_FLAGS) -O3 -fuse-linker-plugin -fno-web -fno-gcse -fomit-frame-pointer -flto -flto=auto -ffat-lto-objects
 release: CFLAGS= $(FLAGS)
 release: AFLAGS= $(FLAGS)
 release: LIBMD= $(LIB)/libmd.a
@@ -168,7 +168,7 @@ $(OUT)/symbol.txt: $(OUT)/rom.out
 
 $(OUT)/rom.out: $(OUT)/sega.o $(OUT)/cmd_ $(LIBMD)
 	$(MKDIR) -p $(dir $@)
-	$(CC) -m68000 -B$(BIN) -n -T $(GDK)/md.ld -nostdlib $(OUT)/sega.o @$(OUT)/cmd_ $(LIBMD) $(LIBGCC) -o $(OUT)/rom.out -Wl,--gc-sections -flto
+	$(CC) -m68000 -B$(BIN) -n -T $(GDK)/md.ld -nostdlib $(OUT)/sega.o @$(OUT)/cmd_ $(LIBMD) $(LIBGCC) -o $(OUT)/rom.out -Wl,--gc-sections -flto -flto=auto -ffat-lto-objects
 	$(RM) $(OUT)/cmd_
 
 $(OUT)/cmd_: $(OBJS)
diff --git a/makelib.gen b/makelib.gen
index 4de1235b..5cad1d60 100644
--- a/makelib.gen
+++ b/makelib.gen
@@ -37,8 +37,8 @@ DEFAULT_FLAGS_LIB := $(EXTRA_FLAGS) -DSGDK_GCC -m68000 -Wall -Wextra -Wno-array-
 FLAGSZ80_LIB := -i$(SRC_LIB) -i$(INCLUDE_LIB) -i$(INCLUDE_LIB)/snd
 
 
-#release: FLAGS_LIB= $(DEFAULT_FLAGS_LIB) -Os -fomit-frame-pointer -fuse-linker-plugin -ffat-lto-objects -flto
-release: FLAGS_LIB= $(DEFAULT_FLAGS_LIB) -O3 -fuse-linker-plugin -fno-web -fno-gcse -fomit-frame-pointer -ffat-lto-objects -flto
+#release: FLAGS_LIB= $(DEFAULT_FLAGS_LIB) -Os -fomit-frame-pointer -fuse-linker-plugin -flto -flto=auto -ffat-lto-objects
+release: FLAGS_LIB= $(DEFAULT_FLAGS_LIB) -O3 -fuse-linker-plugin -fno-web -fno-gcse -fomit-frame-pointer -flto -flto=auto -ffat-lto-objects
 release: CFLAGS_LIB= $(FLAGS_LIB)
 release: AFLAGS_LIB= $(FLAGS_LIB)
 release: $(LIB)/libmd.a
diff --git a/sample/benchmark/src/spr_test.c b/sample/benchmark/src/spr_test.c
index da5b6413..e141adfe 100644
--- a/sample/benchmark/src/spr_test.c
+++ b/sample/benchmark/src/spr_test.c
@@ -867,8 +867,8 @@ u16 executeSpritesTest(u16 *scores)
     PAL_setColors(0, palette, 64, CPU);
     SYS_enableInts();
 
-    // execute sprite bench
-    execute(25, 12) / 8;
+    // execute sprite bench (result not used in score)
+    execute(25, 12);
 #endif // LEGACY_SPRITE_ENGINE
 
     SPR_logProfil();