installation: LDFLAGS is given to both gcc and ld

[Paul Jarc]

On Solaris, ncurses creates its shared libraries using ld directly
instead of via gcc.  So LDFLAGS is passed directly to ld in those
cases, but to gcc in other cases.  This means that only flags that are
comprehensible to both gcc and ld can be used in LDFLAGS.  It would be
helpful if gcc was used to produce shared libraries; then LDFLAGS
would have a consistent interface, and could be used to pass any
linker flag.  (Options not understood by gcc could be protected by
"-Wl,".)


paul