further optimize codesize

[pub/USBaspLoader.git] / firmware / Makefile

diff --git a/firmware/Makefile b/firmware/Makefile
index 04bec88..df886aa 100644 (file)
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -19,7 +19,7 @@ include ../Makefile.inc
 
 # Remove the -fno-* options when you use gcc 3, it does not understand them
 CFLAGS = -Wall -Os -fno-move-loop-invariants -fno-tree-scev-cprop -fno-inline-small-functions -I. -mmcu=$(DEVICE) -DBOOTLOADER_ADDRESS=$(BOOTLOADER_ADDRESS) -DF_CPU=$(F_CPU) $(DEFINES)
-LDFLAGS = -Wl,--relax,--gc-sections -Wl,--section-start=.text=$(BOOTLOADER_ADDRESS)
+LDFLAGS = -Wl,--relax,--gc-sections -Wl,--section-start=.text=$(BOOTLOADER_ADDRESS) -Wl,--defsym=nullVector=0
 
 OBJECTS =  usbdrv/usbdrvasm.o usbdrv/oddebug.o main.o