for c/cpp include path by adding the path to system file and run

Question

A file called test.cpp in ~/test code is

#include <stdio.h>
#include "add.h" 
int main(){
    printf("%d\n",add(1,2));
}

file add.h is in ~/test/1, which is just a subdirctory

code is

int add(int a, int b){return a+b;}

then i use export

export PATH=$PATH:~/test/1

Is there any way to fix that?

not using #include "1/test"

any help is much appreciated

https://stackoverflow.com/questions/4980819/what-are-the-gcc-default-include-directories — yano, Oct 25 '19 at 05:02

score 4 · Accepted Answer · answered Oct 25 '19 at 05:02

export is used to create an environment variable for the shell. It has no bearing on where the compiler looks to find your include files.

gcc -Itest/1 test.cpp should make it work. The -I argument gives gcc a path to look for include files in.

You can use a makefile or cmake to give these specific instructions to gcc if you like.

1 Answers1