3b1 shared library problems

[Dave Hanna]

I have a problem that turned up when I tried to remake the news 
software for my 3b1.  The problem is that, when linking the shared libraries,
the symbol "daylight", which, according to the manual  CTIME(3C) is
an external int defined in  ctime, is not defined in the shared 
library ifile. The following simple file demonstrates the problem:


File chktime.c:

#include <stdio.h>
#include <time.h>

main(argc,argv)
    char **argv;
    int argc;
{
    long now = time ( (long *) 0 );

    printf ("%s", ctime(&now));
    if ( daylight ) printf("Daylight time is %d\n", daylight);
    else printf ("Daylight time is 0\n");
}

The command line
	cc chktime.c

produces an a.out that runs as expected.

The command sequence:
	cc -c chktime.c ; ld /lib/crt0s.o /lib/shlib.ifile chktime.o

produces a complaint of an undefined symbol "daylight".

I encountered the problem because the module ftime.c in the news software
contains a reference to "daylight", and the makefile I was trying to 
use tried to link with shared libraries.

Questions:  1) I suspect "daylight" is not the only symbol that has
this difficulty.  Does anyone know of others?
	2) Does anyone know a way around this other than not using
shared libraries?