makefile 自动生成编译时间

ROOT_DIR = $(PWD)
SHELL     = /bin/bash
BUILG_INFO_H	= $(ROOT_DIR)/include/build_info.h
export
all: build_info
	make -C build all

clean:
	rm -rf *.bin
	make -C build clean

.PHONY: all
.PHONY: clean

build_info: $(BUILG_INFO_H)

$(BUILG_INFO_H): FORCE#强制生成build_info.h
	$(RM) $@; 	echo -e	"#ifndef __BUILD_INFO_H__\n"					"#define __BUILD_INFO_H__\n"					"#define APP_TIME \"`date "+%Y-%m-%d-%w %H:%M:%S"`\"\n"					"#endif"  > $@
 
FORCE:
.PHONY: FORCE

然后调用build_info.h就可以使用APP_TIME了

makefile 自动生成编译时间

原文：https://www.cnblogs.com/161110194zjs/p/14767550.html