tccpp: Add the define __STDC_HOSTED__ [C99]

Usually defined to 1, but when using "-nostdlib", the value is 0
(required for C99)

--
Regards ... Detlef

Author: winspool

tccpp.c

@@ -3737,6 +3737,7 @@ static void tcc_predefs(TCCState *s1, CString *cs, int is_asm)
     cstr_printf(cs, "#define __SIZEOF_LONG__ %d\n", LONG_SIZE);
     if (!is_asm) {
       putdef(cs, "__STDC__");
+      cstr_printf(cs, "#define __STDC_HOSTED__ %d\n", s1->nostdlib ? 0 : 1);
       cstr_printf(cs, "#define __STDC_VERSION__ %dL\n", s1->cversion);
       cstr_cat(cs,
         /* load more predefs and __builtins */