I’ve read the various other questions on this but they either dont work or im otherwise stuck.

I’m trying to dynamically #import a file based on build flags where my imported file name is of the form:

hardware_<hardware>_<version>.h

I can make it work, but only without the .h file extension, which isnt ideal.

How do I modify this to have .h on the end?

./hardware_XXX_YYY:

#define FOO "bar"

./main.cpp:

#include <iostream>   

#define HARDWARE XXX
#define HARDWARE_VERSION YYY

#define CCC(x) #x

// This fails:
//#define BBB(ha, ver) CCC(hardware_##ha##_##ver##.h)

// This works:
#define BBB(ha, ver) CCC(hardware_##ha##_##ver)

#define AAA(ha, ver) BBB(ha, ver)

#include AAA(HARDWARE, HARDWARE_VERSION)

int main() {
    
    std::cout << FOO  << 'n';
}