From:	"Rafal Maj" <maj_rafal AT poczta DOT onet DOT pl>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Library with templates - help !!!!!!!!!!!!!
Date:	Sat, 20 Jan 2001 14:21:24 +0100
Organization:	Academic Computer Center CYFRONET AGH
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hi,
I have problem when I compile program using library with templates.
Project file contains bugmain.cc & bug.cc. In this example, bugmain.cc is my
mian program, bug.cc is my library & bug.h is library header. I have
problems to build my program when I'm using templates in my library.
I get error report :

Compiling: bugmain.cc
no errors
Creating: bug.exe
Error: bugmain.o: In function `main':
bugmain.cc(2) Error: undefined reference to `box<int>::move(int)'
There were some errors

Box is my template class and move is simple function inside bug ctemplate
class.
Can somebody help me ???????

I know, that there are options like -frepo, no-implict-templates, etc... but
I realy don't know how to set them to make my exaple work.

If You can help me, please write exacly what should be compiler & linker
options, and what I have to change inside my source files.
Maybe You can correct my project file, then send it to me
 maj_rafal AT poczta DOT onet DOT pl  )?

============ PROJECT WINDOW ==========
bug.cc
bugmain.cc
================== BUG.CC ================
template <class typ> void box<typ>::move(typ d) {
  x+=d;  y+=d;
}
================== BUGMAIN.CC =================
#include "bug.h"
main() {
  box<int> b;
  b.move(5);
}
================== BUG.H ===============
template <class typ>
class box {
  public :
    typ x,y;
    void move(typ d);
};
=========================================================

Thanks in advice ;-)
Rafał

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