idiot's question on Xlib programming

[huixf]

I write a simple program but can't compile it. Below is the program:

#include Xlib.h
main()
{Display *d=XOpenDisplay(NULL);
  if(d==NULL) 
   {printf(can't open display\n);exit(0);}  XCloseDisplay(d);
}

I use gcc -I/usr/X11R6/include/X11 xhi.c to complie it and get the following 
message:

/tmp/cca002281.o: In function `main':
/tmp/cca002281.o(.text+0x9): undefined reference to `XOpenDisplay'
/tmp/cca002281.o(.text+0x45): undefined reference to `XCloseDisplay'

What's the problem? Please reply to [EMAIL PROTECTED] because I will leave the 
list in a minute.

Re: idiot's question on Xlib programming

[Havoc Pennington]

On Tue, 3 Aug 1999 [EMAIL PROTECTED] wrote:
 
 I use gcc -I/usr/X11R6/include/X11 xhi.c to complie it and get the 
 following message:
 
 /tmp/cca002281.o: In function `main':
 /tmp/cca002281.o(.text+0x9): undefined reference to `XOpenDisplay'
 /tmp/cca002281.o(.text+0x45): undefined reference to `XCloseDisplay'
 
 What's the problem? Please reply to [EMAIL PROTECTED] because I will leave 
 the list in a minute.
 

You have to link with Xlib, try adding the '-lX11' flag to your compile
line.

You may find Gtk or some other high-level toolkit less frustrating; Xlib
is hard even if you have a lot of Unix programming experience.

Havoc

Re: idiot's question on Xlib programming

[Ludovic Paquet]

[EMAIL PROTECTED] wrote:
I write a simple program but can't compile it. Below
is the program:
#include Xlib.h>
main()
{Display *d=XOpenDisplay(NULL);
 if(d==NULL)
 {printf("can't open display\n");exit(0);} XCloseDisplay(d);
}
I use "gcc -I/usr/X11R6/include/X11 xhi.c" to complie it and get the
following message:
/tmp/cca002281.o: In function `main':
/tmp/cca002281.o(.text+0x9): undefined reference to `XOpenDisplay'
/tmp/cca002281.o(.text+0x45): undefined reference to `XCloseDisplay'
What's the problem? Please reply to [EMAIL PROTECTED] because I will
leave the list in a minute.
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Unsubscribe? mail -s unsubscribe [EMAIL PROTECTED]
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You can try to compile with "gcc -I/usr/X11R6/include -L/usr/X11R6/lib/
-lX11 xhi.c"
The source code is:

#include X11/Xlib.h>
main()
{Display *d=XOpenDisplay(NULL);
 if(d==NULL)
 {printf("can't open display\n");exit(0);} XCloseDisplay(d);
}
It works on my computer



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PAQUET Ludovic

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 telephone : 05-46-88-41-80
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Re: idiot's question on Xlib programming

[Martin Waller]

You need to link in the Xlib library with the switch -lX11.

Martin


From: [EMAIL PROTECTED]
To: debian-user@lists.debian.org
Subject: idiot's question on Xlib programming

I write a simple program but can't compile it. Below is the program:

#include Xlib.h
main()
{Display *d=XOpenDisplay(NULL);
  if(d==NULL)
   {printf(can't open display\n);exit(0);}  XCloseDisplay(d);
}

I use gcc -I/usr/X11R6/include/X11 xhi.c to complie it and get the 
following message:


/tmp/cca002281.o: In function `main':
/tmp/cca002281.o(.text+0x9): undefined reference to `XOpenDisplay'
/tmp/cca002281.o(.text+0x45): undefined reference to `XCloseDisplay'

What's the problem? Please reply to [EMAIL PROTECTED] because I will 
leave the list in a minute.



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