[bug-gawk] gawk can't find libreadline when cross compiling

[Christer Solskogen]

checking whether readline via "-lreadline" is present and sane... no
checking whether readline via "-lreadline -ltermcap" is present and 
sane... no
checking whether readline via "-lreadline -lcurses" is present and 
sane... no
checking whether readline via "-lreadline -lncurses" is present and 
sane... no

But I *really* do have libreadline.so, libtermcap.so, libcurses.so and 
libncurses.so. Also, adding:
#define HAVE_LIBREADLINE 1
into config.h after configure and add LIBREADLINE="-lreadline -lncurses" 
to make seems to work just fine. No trouble compiling, and the libraries 
are correctly linked.

The configure script have no trouble finding mpfr when it is cross compiled.
checking whether mpfr via "-lmpfr -lgmp" is present and usable... yes