🚀 go-pugleaf

jmartin@personalvision (Jonathan Martin) s'écrit :
> Ok, I'm teaching myself c++, so bare with me.
> 
> When I compile this:
> 	#include <CursesW.h>
> 	main () {
> 		CursesWindow mine (20,20,5,5);
> 	}
> with the command line:
> 
> 	g++ -I/usr/include/ncurses -ohello hello.cc
> 
> I get this from the linker:
> 
> /tmp/cca...: undefined reference to 'CursesWindow::~CursesWindow(void)'
> /tmp/cca...: undefined reference to 'CursesWindow::CursesWindow(int,int,int,int)'
> 
> I checked the command line that g++ is feeding to ld, and -lg++ is 
> there. I made a hello.o and checked the symbol table, and the symbols 
> that ld's having trouble with seem to match those in libg++ ok.  I 
> dunno.  Like I said, I'm new at this.
> 
> Any help would be greatly appreciated.
> 
> -Jon
> jmartin@snet.net
> 
May be -lg++ is not enough to find your library.
You may also need to use the -L/usr/g++/lib or other
to specify where to search for libraries.
Beware also of what kind of library you use.
Don't you link with dynamic link libraries and only have a
static library for Curses ? if so, add a binding option
before the -lg++ (e.g. -dy or -dn with Sun linker).
Did you compile the Curses library with the same version
of the compiler ? if not, may be the mangling rules differ
from your library to your compiler.
Do you use the correct set of libraries (for other versions
of g++ for example). Check your environment variables...
Do you use the right version of g++ ? Try "g++ -v"...

Hope this will help.