rt-thread/bsp/nrf52832/nRF5_SDK_13.0.0_04a0bfd/components/toolchain/gcc/Makefile.common

# Copyright (c) 2016 Nordic Semiconductor. All Rights Reserved.
#
# The information contained herein is property of Nordic Semiconductor ASA.
# Terms and conditions of usage are described in detail in NORDIC
# SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
#
# Licensees are granted free, non-transferable use of the information. NO
# WARRANTY of ANY KIND is provided. This heading must NOT be removed from
# the file.

PLATFORM_SUFFIX := $(if $(filter Windows%,$(OS)),windows,posix)
TOOLCHAIN_CONFIG_FILE := $(TEMPLATE_PATH)/Makefile.$(PLATFORM_SUFFIX)
include $(TOOLCHAIN_CONFIG_FILE)

# Toolchain commands
CC      := "$(GNU_INSTALL_ROOT)/bin/$(GNU_PREFIX)-gcc"
CXX     := "$(GNU_INSTALL_ROOT)/bin/$(GNU_PREFIX)-c++"
AS      := "$(GNU_INSTALL_ROOT)/bin/$(GNU_PREFIX)-as"
AR      := "$(GNU_INSTALL_ROOT)/bin/$(GNU_PREFIX)-ar" -r
LD      := "$(GNU_INSTALL_ROOT)/bin/$(GNU_PREFIX)-ld"
NM      := "$(GNU_INSTALL_ROOT)/bin/$(GNU_PREFIX)-nm"
OBJDUMP := "$(GNU_INSTALL_ROOT)/bin/$(GNU_PREFIX)-objdump"
OBJCOPY := "$(GNU_INSTALL_ROOT)/bin/$(GNU_PREFIX)-objcopy"
SIZE    := "$(GNU_INSTALL_ROOT)/bin/$(GNU_PREFIX)-size"
$(if $(shell $(CC) --version),,$(info Cannot find: $(CC).) \
  $(info Please set values in: "$(abspath $(TOOLCHAIN_CONFIG_FILE))") \
  $(info according to the actual configuration of your system.) \
  $(error Cannot continue))

# Use ccache on linux if available
CCACHE := $(if $(filter Windows%,$(OS)),, \
               $(if $(wildcard /usr/bin/ccache),ccache))
CC     := $(CCACHE) $(CC)

MK := mkdir
RM := rm -rf

# echo suspend
ifeq ($(VERBOSE),1)
  NO_ECHO :=
else
  NO_ECHO := @
endif

# $1 type of item
# $2 path to check
define ensure_exists
$(if $(wildcard $(2)),, $(warning Cannot find $(1): $(2)))
endef

# $1 object file
# $2 source file
define bind_obj_with_src
$(eval $(1) := $(2))
endef

# $1 object file
# $2 target name
define bind_obj_with_target
$(eval $(1)T := $(2))
endef

# $1 target name
# $2 source file name
# Note: this additional .o for .s-files is a workaround for issues with make 4.1
#       from MinGW (it does nothing to remake .s.o files when a rule for .S.o
#       files is defined as well).
define get_object_file_name
$(OUTPUT_DIRECTORY)/$(strip $(1))_$(patsubst %.s,%.s.o,$(notdir $(2))).o
endef

# $1 target name
# $2 list of source files
define get_object_files
$(foreach src_file, $(2), \
  $(call ensure_exists,source file, $(src_file)) \
  $(eval obj_file := $(call get_object_file_name, $(1), $(src_file))) \
  $(eval DEPENDENCIES += $(obj_file:.o=.d)) \
  $(call bind_obj_with_src, $(obj_file), $(src_file)) \
  $(call bind_obj_with_target, $(obj_file), $(1)) \
  $(eval $(obj_file): Makefile) \
  $(obj_file))
endef

# $1 variable name
# $2 target name
define target_specific
$($(addsuffix _$(strip $(2)), $(1)))
endef

# $1 target name
# $2 link target name
define prepare_build
$(eval DEPENDENCIES :=) \
$(eval $(2): \
  $(call get_object_files, $(1), $(SRC_FILES) \
    $(call target_specific, SRC_FILES, $(1)))) \
$(eval -include $(DEPENDENCIES)) \
$(eval INC_PATHS_$(strip $(1)) := \
  $(foreach folder, $(INC_FOLDERS) $(call target_specific, INC_FOLDERS, $(1)), \
    $(call ensure_exists,include folder, $(folder)) \
    -I"$(folder)"))
endef

INC_PATHS = $(call target_specific, INC_PATHS, $($@T))

# $1 target name
define define_target
$(eval OUTPUT_FILE := $(OUTPUT_DIRECTORY)/$(strip $(1))) \
$(eval $(1): $(OUTPUT_FILE).out $(OUTPUT_FILE).hex $(OUTPUT_FILE).bin) \
$(call prepare_build, $(1), $(OUTPUT_FILE).out)
endef

# $1 target name
# $2 library file name
define define_library
$(eval $(1) := $(2)) \
$(call prepare_build, $(1), $(1))
endef

.PHONY: $(TARGETS) default all clean help flash

all: $(TARGETS)

clean:
	$(RM) $(OUTPUT_DIRECTORY)

# Create build directories
$(OUTPUT_DIRECTORY):
	$(MK) $@

# Create objects from C source files
$(OUTPUT_DIRECTORY)/%.c.o: | $(OUTPUT_DIRECTORY)
	@echo Compiling file: $(notdir $($@))
	$(NO_ECHO)$(CC) -MP -MD -std=c99 $(CFLAGS) $(INC_PATHS) -c -o $@ "$($@)"

# Create objects from C++ source files
$(OUTPUT_DIRECTORY)/%.cpp.o: | $(OUTPUT_DIRECTORY)
	@echo Compiling file: $(notdir $($@))
	$(NO_ECHO)$(CXX) -MP -MD $(CFLAGS) $(CXXFLAGS) $(INC_PATHS) -c -o $@ "$($@)"

# Create objects from assembly files
$(OUTPUT_DIRECTORY)/%.S.o \
$(OUTPUT_DIRECTORY)/%.s.o.o: | $(OUTPUT_DIRECTORY)
	@echo Assembling file: $(notdir $($@))
	$(NO_ECHO)$(CC) -MP -MD -std=c99 $(ASMFLAGS) $(INC_PATHS) -c -o $@ "$($@)"

export FILE_LIST
DUMP_FILE_LIST := \
  "$(MAKE)" -s --no-print-directory -f $(TEMPLATE_PATH)/file_list.mk
# Link object files
%.out:
	$(eval FILE_LIST := $^ $(LIB_FILES))
	$(NO_ECHO)$(DUMP_FILE_LIST) > $(@:.out=.in)
	@echo Linking target: $@
	$(NO_ECHO)$(CC) -Wl,-Map=$(@:.out=.map) $(LDFLAGS) @$(@:.out=.in) -lm -o $@
	-@echo ''
	$(NO_ECHO)$(SIZE) $@
	-@echo ''

# Create binary .bin file from the .out file
%.bin: %.out
	@echo Preparing: $@
	$(NO_ECHO)$(OBJCOPY) -O binary $< $@

# Create binary .hex file from the .out file
%.hex: %.out
	@echo Preparing: $@
	$(NO_ECHO)$(OBJCOPY) -O ihex $< $@