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Re: Problems with undefined reference errors

Here are my results without modification of your source:

[mharris toboggan mharris]$ cat /etc/redhat-release
Red Hat Linux release 9 (Shrike)
[mharris toboggan mharris]$ rpm -q XFree86 XFree86-devel gcc
[mharris toboggan mharris]$ cat foo.c
#include <X11/extensions/XTest.h>
#include <X11/keysym.h>

int main(void)
        Display* disp = XOpenDisplay(NULL);
        if (disp == NULL) return 1;
        XTestFakeKeyEvent(disp, XKeysymToKeycode(disp, XK_Num_Lock), True,CurrentTime);
        XTestFakeKeyEvent(disp, XKeysymToKeycode(disp, XK_Num_Lock), False,CurrentTime );
        return 0;
[mharris toboggan mharris]$ gcc -Wall -I /usr/X11R6/include -L /usr/X11R6/lib -lX11 -lXtst -o foo foo.c
[mharris toboggan mharris]$ file foo
foo: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.2.5, dynamically linked (uses shared libs), not stripped
[mharris toboggan mharris]$ ldd foo
        libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x4002c000)
        libXtst.so.6 => /usr/X11R6/lib/libXtst.so.6 (0x4010b000)
        libc.so.6 => /lib/tls/libc.so.6 (0x42000000)
        libdl.so.2 => /lib/libdl.so.2 (0x40110000)
        libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x40113000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)

I suggest reinstalling Red Hat Linux 9 from scratch, and not 
replacing any core system components with homebrew builds, as 
that is a likely source of problem.

Mike A. Harris

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