gcc -I opzione flag

gcc -I aggiunge la directory include dei file di intestazione.

Sintassi

$ gcc -Idir [options] [source files] [object files] [-o output file]

Esempio

proj/src/myheader.h:

// myheader.h
#define NUM1 5

myfile.c:

// myfile.c
#include <stdio.h/
#include "myheader.h"
 
void main()
{
    int num = NUM1;
    printf("num=%d\n", num);
}

Costruire miofile.c senza includere directory proj / src :

$ gcc myfile.c -o myfile
myfile.c:2:22: fatal error: myheader.h: No such file or directory
compilation terminated.
$

Costruire miofile.c con includono directory proj / src :

$ gcc -Iproj/src myfile.c -o myfile
$ ./myfile
num=5
$

Guarda anche

• gcc
• gcc -c
• gcc -D
• gcc -g
• gcc -L -l
• gcc -o
• gcc -O
• gcc -Wall