Compile error

Hi,

I am using bro 0.7a61 and Red hat linux 2.4.2. When I compile the files, the error message is

c++ -I. -O -I…/libpcap-0.4 -Ilinux-include -c Func.cc
Func.cc: In function void do_fmt (const char *&, Val *, ODesc *)': Func.cc:244: localtime’ undeclared (first use this function)
Func.cc:244: (Each undeclared identifier is reported only once for each
function it appears in.)
Func.cc:244: `strftime’ undeclared (first use this function)

make: *** [Func.o] Error 1

Any suggestion will be greatly appreciated.

thanks,
-Wei