No _Xsetlocale() in XFree86 4.0.1

[Theppitak Karoonboonayanan <thep@links.nectec.or.th>]

Hello,

I'm using xfree86 4.0.1-3 from woody. Recently, I compiled an X program
which uses X locale setting and the linker just complained the undefined
referencing to "_Xsetlocale".

Here's a code that can demonstrate this:

$ cat > xlctest.c
#include <X11/Xlocale.h>

int main()
{
    setlocale(LC_CTYPE, "");
    return 0;
}

$ gcc -DX_LOCALE xlctest.c -L/usr/X11R6/lib -lX11
/tmp/ccwq3dql.o: In function `main':
/tmp/ccwq3dql.o(.text+0x11): undefined reference to `_Xsetlocale'
collect2: ld returned 1 exit status
$

What should I do?

Thank you,
-Theppitak.