Thread: Linking problem - undefined reference to load_parameters

I am having a real bad hair day today! Nothing works!

Anyway, enough ranting:

main.cc

Code:

#include <iostream>
#include <global.h>
...
int main(int argc,char *argv[])
{
...
	if(load_params(argv[1]))
		return RET_ERR; 
...
return RET_OK;
}

global.h

Code:

#ifndef _GLOBAL_H
#define _GLOBAL_H

#ifdef __cplusplus
extern "C"
{
#endif
...
	int load_params(char *fname);	
...
#ifdef __cplusplus
}
#endif

#endif /* _GLOBAL_H */

param.cc

Code:

#include <global.h>
...
inline int load_params(char *fname)
{	return param_scenario.init(fname); 
}
...

All files compile but I get an "undefined reference to load_parameters" error. I note that load_parameters does not have () after it in the error message.

All help appreciated. Thank you.

The problem is more likely in the makefile. Is it linking all necessary *.o files, such as param.o and main.o along with other libraries.

Also, since you declared the function inline, you might have to move it from param.cc to param.h

Originally Posted by Ancient Dragon

The problem is more likely in the makefile. Is it linking all necessary *.o files, such as param.o and main.o along with other libraries.

Also, since you declared the function inline, you might have to move it from param.cc to param.h

I told you it was a bad hair day - remove the inline and everything works :-)

Thanks for the help everyone.

Michael.