使用gcc在另一个程序中编译程序

Question

From command line I am getting file name which I have to compile using gcc. lets say its like this.

./a.out fileToBeCompiled.c

Then how I can compile this file using gcc within my program? lets say main.c for which a.out is being made.

Answer 1

Just exec gcc from within you program.

int main(int argc, char** argv)
{
   execv("/usr/bin/gcc", argv);
}

Answer 2

You can always call gcc to compile from an shell execution command within your program.

Reference to the system function.

Answer 3

Learn how to call fork() , exec() , and wait() . You probably want to use execv() for this purpose.

Answer 4

Simple, you can use the function "system"(defined inside stdio.h) to execute the unix command inside the c, c++ programs.

For Example: I am going to compile sub.c inside main.c

void main(void)
{
  system("cc sub.c -o sub");
}

You can specify the dynamic input and output files.

Answer 5

./a.out fileToBeCompiled.c && gcc fileToBeCompiled.c

如果./a.out失败（它返回0以外的其他内容）将不会调用gcc