#
# LUFA Library
-# Copyright (C) Dean Camera, 2013.
+# Copyright (C) Dean Camera, 2015.
#
# dean [at] fourwalledcubicle [dot] com
# www.lufa-lib.org
LUFA_BUILD_MODULES += BUILD
LUFA_BUILD_TARGETS += size symbol-sizes all lib elf bin hex lss clean mostlyclean
LUFA_BUILD_MANDATORY_VARS += TARGET ARCH MCU SRC F_USB LUFA_PATH
-LUFA_BUILD_OPTIONAL_VARS += BOARD OPTIMIZATION C_STANDARD CPP_STANDARD F_CPU C_FLAGS CPP_FLAGS ASM_FLAGS CC_FLAGS LD_FLAGS OBJDIR OBJECT_FILES DEBUG_TYPE DEBUG_LEVEL LINKER_RELAXATIONS
+LUFA_BUILD_OPTIONAL_VARS += BOARD OPTIMIZATION C_STANDARD CPP_STANDARD F_CPU C_FLAGS CPP_FLAGS ASM_FLAGS CC_FLAGS LD_FLAGS OBJDIR OBJECT_FILES DEBUG_TYPE DEBUG_LEVEL LINKER_RELAXATIONS COMPILER_PATH
LUFA_BUILD_PROVIDED_VARS +=
LUFA_BUILD_PROVIDED_MACROS +=
# generate in the compiled object files
# DEBUG_LEVEL - Level the debugging information to generate in
# the compiled object files
+# COMPILER_PATH - Location of the GCC toolchain to use
#
# PROVIDED VARIABLES:
#
ERROR_IF_NONBOOL ?= $(if $(filter Y N, $($(strip $(1)))), , $(error Makefile $(strip $(1)) option must be Y or N))
# Default values of optionally user-supplied variables
+COMPILER_PATH ?=
BOARD ?= NONE
OPTIMIZATION ?= s
F_CPU ?=
# Determine the utility prefix to use for the selected architecture
ifeq ($(ARCH), AVR8)
- CROSS := avr
+ CROSS := $(COMPILER_PATH)avr
else ifeq ($(ARCH), XMEGA)
- CROSS := avr
+ CROSS := $(COMPILER_PATH)avr
$(warning The XMEGA device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
else ifeq ($(ARCH), UC3)
- CROSS := avr32
+ CROSS := $(COMPILER_PATH)avr32
$(warning The UC3 device support is currently EXPERIMENTAL (incomplete and/or non-functional), and is included for preview purposes only.)
else
$(error Unsupported architecture "$(ARCH)")
BASE_CC_FLAGS += -mrelax
endif
+# This flag is required for bootloaders as GCC will emit invalid jump table
+# assembly code for devices with large amounts of flash; the jump table target
+# is extracted from FLASH without using the correct ELPM instruction, resulting
+# in a pseudo-random jump target.
+BASE_CC_FLAGS += -fno-jump-tables
+
# Additional language specific compiler flags
BASE_C_FLAGS := -x c -O$(OPTIMIZATION) -std=$(C_STANDARD) -Wstrict-prototypes
BASE_CPP_FLAGS := -x c++ -O$(OPTIMIZATION) -std=$(CPP_STANDARD)
# Cleans all build files, leaving only the original source code
clean: mostlyclean
@echo $(MSG_REMOVE_CMD) Removing output files of \"$(TARGET)\"
- rm -f $(TARGET).elf $(TARGET).hex $(TARGET).bin $(TARGET).eep $(TARGET).map $(TARGET).lss $(TARGET).sym $(TARGET).a
+ rm -f $(TARGET).elf $(TARGET).hex $(TARGET).bin $(TARGET).eep $(TARGET).map $(TARGET).lss $(TARGET).sym lib$(TARGET).a
# Performs a complete build of the user application and prints size information afterwards
all: build_begin elf hex bin lss sym size build_end