winspool.drv: Include <cups/ppd.h> to fix building against the macOS 10.12 SDK.

configure

@@ -13054,6 +13054,18 @@ _ACEOF
 
        CUPS_CFLAGS="$ac_cups_cflags"
 fi
+             for ac_header in cups/ppd.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "cups/ppd.h" "ac_cv_header_cups_ppd_h" "$ac_includes_default"
+if test "x$ac_cv_header_cups_ppd_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_CUPS_PPD_H 1
+_ACEOF
+
+fi
+
+done
+
 fi
 
 done

configure.ac

@@ -1543,7 +1543,8 @@ then
     AC_CHECK_HEADERS(cups/cups.h,
             [WINE_CHECK_SONAME(cups,cupsGetDefault,
                        [CUPS_CFLAGS="$ac_cups_cflags"],,
-                       [$ac_cups_libs])])
+                       [$ac_cups_libs])
+             AC_CHECK_HEADERS(cups/ppd.h)])
     CPPFLAGS="$ac_save_CPPFLAGS"
 fi
 WINE_NOTICE_WITH(cups,[test "x$ac_cv_lib_soname_cups" = "x"],

dlls/winspool.drv/info.c

@@ -44,6 +44,9 @@
 #ifdef HAVE_CUPS_CUPS_H
 # include <cups/cups.h>
 #endif
+#ifdef HAVE_CUPS_PPD_H
+# include <cups/ppd.h>
+#endif
 
 #ifdef HAVE_APPLICATIONSERVICES_APPLICATIONSERVICES_H
 #define GetCurrentProcess GetCurrentProcess_Mac

include/config.h.in

@@ -89,6 +89,9 @@
 /* Define to 1 if you have the <cups/cups.h> header file. */
 #undef HAVE_CUPS_CUPS_H
 
+/* Define to 1 if you have the <cups/ppd.h> header file. */
+#undef HAVE_CUPS_PPD_H
+
 /* Define to 1 if you have the <curses.h> header file. */
 #undef HAVE_CURSES_H