lib_gen.o Error while compiling ncurses

I get these errors when i try to compile ncurses 5.3 :

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">code:</font><hr><pre>../ncurses/lib_gen.c: In function `addch':
../ncurses/lib_gen.c:20: parse error before '%' token
../ncurses/lib_gen.c: In function `addchnstr':
../ncurses/lib_gen.c:27: parse error before '%' token
../ncurses/lib_gen.c: In function `addchstr':
../ncurses/lib_gen.c:34: parse error before '%' token

(...)

../ncurses/lib_gen.c:810: parse error before '%' token
../ncurses/lib_gen.c: In function `wstandend':
../ncurses/lib_gen.c:817: parse error before '%' token
../ncurses/lib_gen.c: In function `mouse_trafo':
../ncurses/lib_gen.c:824: parse error before '%' token
make[1]: *** [../objects/lib_gen.o] Error 1
make: *** [all] Error 2</pre>[/quote]

Where do they come from ?

Originally posted by <M-Rick>:
I get these errors when i try to compile ncurses 5.3 :

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">code:</font><hr><pre>../ncurses/lib_gen.c: In function `addch':
../ncurses/lib_gen.c:20: parse error before '%' token
../ncurses/lib_gen.c: In function `addchnstr':
../ncurses/lib_gen.c:27: parse error before '%' token
../ncurses/lib_gen.c: In function `addchstr':
../ncurses/lib_gen.c:34: parse error before '%' token

(...)

../ncurses/lib_gen.c:810: parse error before '%' token
../ncurses/lib_gen.c: In function `wstandend':
../ncurses/lib_gen.c:817: parse error before '%' token
../ncurses/lib_gen.c: In function `mouse_trafo':
../ncurses/lib_gen.c:824: parse error before '%' token
make[1]: *** [../objects/lib_gen.o] Error 1
make: *** [all] Error 2</pre>

Where do they come from ?[/quote]