* configure.in: Add glyphs category to --enable-checking option.

(GLYPH_DEBUG): Define if glyphs debugging is enabled.
* src/dispextern.h (GLYPH_DEBUG): Now defined in config.h if
enabled with --enable-checking=[all,glyphs] configure option.
Fix GLYPH_DEBUG usage assuming that it may be undefined,
adjust comments accordingly.
* src/dispnew.c: Fix GLYPH_DEBUG usage assuming that it may be
undefined, adjust comments accordingly.
* src/image.c: Likewise.
* src/scroll.c: Likewise.
* src/w32fns.c: Likewise.
* src/w32term.c: Likewise.
* src/xdisp.c: Likewise.
* src/xfaces.c: Likewise.
* src/xfns.c: Likewise.
* src/xterm.c: Likewise.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/image.c b/src/image.c
index 63bac9a8a79..9b1c7f1b280 100644
--- a/src/image.c
+++ b/src/image.c
@@ -8686,7 +8686,7 @@ x_kill_gs_process (Pixmap pixmap, struct frame *f)
                                 Tests
  ***********************************************************************/
 
-#if GLYPH_DEBUG
+#ifdef GLYPH_DEBUG
 
 DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0,
        doc: /* Value is non-nil if SPEC is a valid image specification.  */)
@@ -8708,7 +8708,7 @@ DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "")
   return make_number (id);
 }
 
-#endif /* GLYPH_DEBUG != 0 */
+#endif /* GLYPH_DEBUG */
 
 
 /***********************************************************************
@@ -8922,7 +8922,7 @@ non-numeric, there is no explicit limit on the size of images.  */);
   defsubr (&Simage_mask_p);
   defsubr (&Simage_metadata);
 
-#if GLYPH_DEBUG
+#ifdef GLYPH_DEBUG
   defsubr (&Simagep);
   defsubr (&Slookup_image);
 #endif