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Why my code couldn't be compiled

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Top Forums Programming Why my code couldn't be compiled
# 1  
Old 02-22-2005
Why my code couldn't be compiled
Code:
#include <Xm/Xm.h>
#include <Xm/PushB.h>

Widget CreatePushbutton(Widget parent,
			char* name,
			XtCallbackProc callback,
			XtPointer client_data)
{
  Widget push;
  Arg args[20];
  Cardinal n;

  n=0;
  push=XmCreatePushButton(parent,
			  name, args, n);

  XtAddCallback(push,
		XmNactivateCallback,
		callback,
		client_data);

  XtManageChild(push);
  return push;
}

I got the following error message:
Quote:
cd ~/
gcc -g X_Programming.c -o X_Programming -lm
Undefined first referenced
symbol in file
main /usr/local/stow/gcc/gcc-2.95.2-2/lib/gcc-lib/sparc-sun-solaris2.7/2.95.2/crt1.o
XmCreatePushButton /var/tmp/ccyfsC2Z.o
XtManageChild /var/tmp/ccyfsC2Z.o
XtAddCallback /var/tmp/ccyfsC2Z.o
_XmStrings /var/tmp/ccyfsC2Z.o
ld: fatal: Symbol referencing errors. No output written to X_Programming
collect2: ld returned 1 exit status

Compilation exited abnormally with code 1 at Tue Feb 22 13:27:35
# 2  
Old 02-22-2005
I've never been able to execute a single sample program in the book on X programming.
# 3  
Old 02-22-2005
Do I need to install some packages to enable Motif?
# 4  
Old 02-22-2005
For one thing, you don't even have a main() in that file, but you're compiling it as if it was a program. Have you ever written a c program? The other errors have to do with libraries you didn't bother to specify.
# 5  
Old 02-23-2005
Yeah, I have, but never in the Unix environment.
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