Autoconf options and dependencies

Hi Everyone/Akim,

I was looking at Bison 3.7.4 autoconf options versus link libraries.

$ ldd /usr/local/bin/bison
        linux-vdso.so.1
        libiconv.so.2 => /usr/local/bin/../lib/libiconv.so.2
        libtextstyle.so.0 => /usr/local/bin/../lib/libtextstyle.so.0
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6
        libtinfow.so.6 => /usr/local/bin/../lib/libtinfow.so.6
        /lib64/ld-linux-x86-64.so.2

The libtinfow is from Ncurses, but adding --with-libncurses-prefix=DIR
to configure results in:

     WARNING: unrecognized options: --with-libncurses-prefix

Jeff