我希望能够在我的代码中使用git版本的变量。如果我用make设置了变量,然后在.h文件中覆盖了该变量,则最终的值将从'.h'文件中打印出来。有没有一种方法可以覆盖Makefile中的.h

 executing make
gcc -O2 -pipe   -pedantic -std=c99 -Wall -O3 -ledit -DVERSION=\"\" -c main.c -o main.o
In file included from main.c:9:0:
openshell.h:17:0: warning: "VERSION" redefined [enabled by default]
 #define VERSION "v0.1a"


我正在尝试从github设置变量VERSION,以便可以查看版本:

$ ./a.out --version
OpenShell version 0.1(a)
Version: v0.1a-2-gc6b1-dirty


我有这个makefile

CC = gcc
GIT_VERSION := $(shell git describe --abbrev=4 --dirty --always --tags)
CFLAGS := $(CFLAGS) -pedantic -std=c99 -Wall -O3 -ledit -g -DVERSION=\"$(GIT_VERSION)\"

shell: main.o
    $(CC) -o shell main.o errors.c util.c pipeline.c -ledit

main.o: main.c errors.c util.c

.PHONY: clean
clean:
    rm -f *.o


然后它可以在Linux Ubuntu上运行,但不能在BSD上运行,对于PC-BSD,该变量不会显示:

dac:/usr/home/dac/openshell $ make
The Command is: make
27152: executing make
gcc -O2 -pipe   -pedantic -std=c99 -Wall -O3 -ledit -DVERSION=\"\" -c main.c -o main.o
main.c: In function 'trimstring':
main.c:116:9: warning: value computed is not used [-Wunused-value]
         *tmp++;
         ^
main.c:119:17: warning: comparison between pointer and integer [enabled by default]
     while (*tmp != NULL) {
                 ^
main.c: In function 'exec_program':
main.c:444:9: warning: implicit declaration of function 'snprintf' [-Wimplicit-function-declaration]
         snprintf(shell_prompt, sizeof(shell_prompt), "%s:%s $ ", getenv("USER"), getcwd(NULL, 1024));
         ^
main.c:444:9: warning: incompatible implicit declaration of built-in function 'snprintf' [enabled by default]
gcc -o shell main.o errors.c util.c pipeline.c -ledit
dac:/usr/home/dac/openshell $ ./shell --version
The Command is: ./shell --version
27181: executing ./shell
OpenShell version 0.1(a)
Version:
dac:/usr/home/dac/openshell $


欧洲中部时间更新160426 07:49

现在它可以与Ubuntu一起使用(但可能会删除.h文件中的旧版本号)`GIT:= $(shell head -n -1 openshell.h> temp.txt; mv temp.txt openshell.h; git describe --abbrev = 4 --dirty --always --tags>版本;回显“ #define VERSION \” $(GIT_VERSION)\“” >> openshell.h)

更新后的Makefile现在是:

CC = gcc
GIT_VERSION := $(shell git describe --abbrev=4 --dirty --always --tags)
CFLAGS := $(CFLAGS) -L/usr/local/include/ -L/usr/include -pedantic -std=c99 -Wall -O3 -g -DVERSION=\"$(GIT_VERSION)\" -ledit -lncurses

LDIRS = -L/usr/local/lib -L/usr/lib
LIBS = -ledit lncurses -lcurses

shell: main.o
    $(CC) -o shell main.o errors.c util.c pipeline.c -ledit -lncurses -lcurses

main.o: main.c errors.c util.c
USERNAME := $(shell whoami >> username.txt)
GIT:= $(shell head -n -1 openshell.h > temp.txt ; mv temp.txt openshell.h;git describe --abbrev=4 --dirty --always --tags > VERSION; echo "\#define VERSION \"$(GIT_VERSION)\"" >> openshell.h)

.PHONY: clean
clean:
    rm -f *.o

`

最佳答案

为了避免warning: "VERSION" redefined,请用#ifndef包裹#define:

#ifndef VERSION
  #define VERSION "v0.1a"
#endif

关于c - 如何使我的程序使用BSD打印其github版本号?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/36813687/

10-11 22:11
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