I want my program to do the same thing as the terminal commands below:
gcc program1.c -o p1 funcs.c
gcc program2.c -o p1 funcs.c
This is what I've been experimenting with: Making a C program to compile another
I got as far so calling my program (./"programName") in the terminal that it replaced the need for me too type gcc but needing me too type in the rest.
You can use the Linux and POSIX APIs so read first Advanced Linux Programming and intro(2)
You could just run a compilation command with system(3), you can use snprintf(3) to build the command string (but beware of code injection); for example
void compile_program_by_number (int i) {
assert (i>0);
char cmdbuf[64];
memset(cmdbuf, 0, sizeof(cmdbuf));
if (snprintf(cmdbuf, sizeof(cmdbuf),
"gcc -Wall -g -O program%d.c fun.c -o p%d",
i, i)
>= sizeof(cmdbuf)) {
fprintf(stderr, "too wide command for #%d\n", i);
exit(EXIT_FAILURE);
};
fflush(NULL); // always useful before system(3)
int nok = system(cmdbuf);
if (nok) {
fprintf(stderr, "compilation %s failed with %d\n", cmdbuf, nok);
exit(EXIT_FAILURE);
}
}
BTW, your program could generate some C code, then fork + execve + waitpid the gcc compiler (or make), then perhaps even dlopen(3) the result of the compilation (you'll need gcc -fPIC -shared -O foo.c -o foo.so to compile a dlopenable shared object...). MELT is doing exactly that. (and so does my manydl.c which shows that you can do a big lot of dlopen-s ...)
You can use exec family function or you can directly execute shell command by using system() method
There is build in functionality in Makefile.
All you would have to call is make.
How to: http://www.cs.colby.edu/maxwell/courses/tutorials/maketutor/
Great stackoverflow question: How do I make a simple makefile for gcc on Linux?
