Build failure in ncurses 5.9 with latest trunk GCC.

[Marcus Shawcroft]

Folks,

Recent trunk GCC fails to build ncurses 5.9 with the following error:

In file included from 
/home/marcus/work/dev-fsf-trunk/src/ncurses/ncurses/curses.priv.h:283:0,
                 from ../ncurses/lib_gen.c:19:
../ncurses/lib_gen.c:923:15: error: expected ‘)’ before ‘int’
  mouse_trafo (int * a1, int * a2,
               ^
../include/curses.h:1594:56: note: in definition of macro ‘mouse_trafo’
 #define mouse_trafo(y,x,to_screen) wmouse_trafo(stdscr,y,x,to_screen)

The issue was reported to gcc bugzilla here:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61832

The underlying issue appears to be that the ncurses script MKlib_gen.sh 
consumes C pre-processed output and hardwires assumptions about the # 
directives emitted which no longer hold.

Cheers
/Marcus