Question

I just can’t win with headers it seems.

I have a class Log of which has a header Log.h that defines the class Log, and then the Log.cpp implements the methods of Log. I need it available in Main.cpp, so I include Log.h into Main.cpp and I receive the notorious “already defined” errors.

If I take out the header from Main.cpp, I can’t use the class.
If I take out the header from Log.cpp, then Log is (obviously) not defined.

I can’t win here! What do I do?

EDIT YES, of course I have include guards.

#ifndef LOG_H_
#define LOG_H_

namespace vexal {

#define CCOL_RESET  "^[[0m"
#define CCOL_RED    "^[[31m"

class Log {
public:
    Log();
    virtual ~Log();
    static void genInstance();
private:
    static Log* _inst;
};

}

#endif /* LOG_H_ */

Then the includes are merely #include "Log.h" in both Log.cpp and Main.cpp.

Answer 1

The issue ended up being the order of which the includes were included. Some includes have to be included before others to avoid redefinition issues.