写一个简单的Makefile 

yang@yang-virtual-machine:~/test$ gcc --help
Usage: gcc [options] file...
Options:
  -pass-exit-codes         Exit with highest error code from a phase.
  --help                   Display this information.
  --target-help            Display target specific command line options.
  --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...].
                           Display specific types of command line options.
  (Use '-v --help' to display command line options of sub-processes).
  --version                Display compiler version information.
  -dumpspecs               Display all of the built in spec strings.
  -dumpversion             Display the version of the compiler.
  -dumpmachine             Display the compiler's target processor.
  -print-search-dirs       Display the directories in the compiler's search path.
  -print-libgcc-file-name  Display the name of the compiler's companion library.
  -print-file-name=<lib>   Display the full path to library <lib>.
  -print-prog-name=<prog>  Display the full path to compiler component <prog>.
  -print-multiarch         Display the target's normalized GNU triplet, used as
                           a component in the library path.
  -print-multi-directory   Display the root directory for versions of libgcc.
  -print-multi-lib         Display the mapping between command line options and
                           multiple library search directories.
  -print-multi-os-directory Display the relative path to OS libraries.
  -print-sysroot           Display the target libraries directory.
  -print-sysroot-headers-suffix Display the sysroot suffix used to find headers.
  -Wa,<options>            Pass comma-separated <options> on to the assembler.
  -Wp,<options>            Pass comma-separated <options> on to the preprocessor.
  -Wl,<options>            Pass comma-separated <options> on to the linker.
  -Xassembler <arg>        Pass <arg> on to the assembler.
  -Xpreprocessor <arg>     Pass <arg> on to the preprocessor.
  -Xlinker <arg>           Pass <arg> on to the linker.
  -save-temps              Do not delete intermediate files.
  -save-temps=<arg>        Do not delete intermediate files.
  -no-canonical-prefixes   Do not canonicalize paths when building relative
                           prefixes to other gcc components.
  -pipe                    Use pipes rather than intermediate files.
  -time                    Time the execution of each subprocess.
  -specs=<file>            Override built-in specs with the contents of <file>.
  -std=<standard>          Assume that the input sources are for <standard>.
  --sysroot=<directory>    Use <directory> as the root directory for headers
                           and libraries.
  -B <directory>           Add <directory> to the compiler's search paths.
  -v                       Display the programs invoked by the compiler.
  -###                     Like -v but options quoted and commands not executed.
  -E                       Preprocess only; do not compile, assemble or link.
  -S                       Compile only; do not assemble or link.
  -c                       Compile and assemble, but do not link.
  -o <file>                Place the output into <file>.
  -pie                     Create a position independent executable.
  -shared                  Create a shared library.
  -x <language>            Specify the language of the following input files.
                           Permissible languages include: c c++ assembler none
                           'none' means revert to the default behavior of
                           guessing the language based on the file's extension.

Options starting with -g, -f, -m, -O, -W, or --param are automatically
 passed on to the various sub-processes invoked by gcc.  In order to pass
 other options on to these processes the -W<letter> options must be used.

For bug reporting instructions, please see:
<file:///usr/share/doc/gcc-7/README.Bugs>.

　　

 

 

如果只有数量很少的几个.c文件需要编译，使用gcc 可以很快完成，但是如果文件很多，使用gcc命令一个个进行编译就会变得很繁琐，所以需要用到Makefile。

1、首先需要编写几个.c文件和.h文件

　　①main.c

 1 #include <stdio.h>
 2 #include "input.h"
 3 #include "calculate.h"
 4 
 5 int main(int argc,char * argv[])
 6 {
 7     int a,b,sum;
 8     printf("please input two value:\r\n");
 9     get_input_values(&a,&b);
10     sum = calculate(a,b);
11     printf("%d + %d = %d\r\n",a,b,sum);
12     return 0;
13 }

　　②input.c

1 #include "input.h"
2 #include <stdio.h>
3 
4 void get_input_values(int * a,int * b)
5 {
6     scanf("%d %d",a,b);
7 }

　　③calculate.c

1 #include "calculate.h"
2 
3 int calculate(int a,int b)
4 {
5     return a+b;
6 }

　　④input.h

 1 #ifndef _INPUT_H_
 2 #define _INPUT_H_
 3 
 4 
 5 
 6 
 7 
 8 
 9 
10 void get_input_values(int * a,int * b);
11 
12 
13 #endif

　　⑤calculate.h

 1 #ifndef _CALCULATE_H_
 2 #define _CALCULATE_H_
 3 
 4 
 5 
 6 
 7 
 8 
 9 int calculate(int a,int b);
10 
11 
12 #endif

2、编写Makefile

 1 main: main.o input.o calculate.o 
 2     gcc -o main main.o input.o calculate.o
 3 main.o: main.c
 4     gcc -c main.c
 5 input.o: input.c
 6     gcc -c input.c
 7 calculate.o: calculate.c
 8     gcc -c calculate.c
 9 
10 clean:
11     rm *.o
12     rm main

3、make

 

 4、运行程序

 

posted @ 2022-04-08 23:14  沙河淘金  阅读(50)  评论(0)  编辑  收藏  举报