Current versions of gcc complain about statements of the form
  #else FOO
and
  #endif BAR

This syntax has historically been acceptable to most C compilers, although it
is not permitted by ANSI/ISO C; any tokens following #else or #endif on the
same line are simply ignored.  Some writers have exploited this permissiveness
to make their code more easily readable, although most are careful to mark
their comments using /* ... */ (which is permitted even by finicky compilers
such as gcc).

In the standard XView distribution, six of the *.h files normally found in
/usr/openwin/include/pixrect/ contain #else or #endif statements that provoke
warnings from gcc. Although these warnings do not prevent successful
compilation of wave, they are so numerous that more serious errors can easily
go unnoticed.

This file contains patches that correct these bugs.  To apply them, copy
this file to the parent directory of 'pixrect' (normally /usr/openwin/include),
then type

    patch -p0 <xview-patches

If you don't have `patch', read the rest of this file and apply the edits
manually.

The patches themselves begin here:

diff -Naur pixrect-/memvar.h pixrect/memvar.h
--- pixrect-/memvar.h	Mon Jun  5 04:39:17 2000
+++ pixrect/memvar.h	Fri Oct 12 14:05:30 2001
@@ -48,7 +48,7 @@
 #ifdef i386
 #define MP_I386		8	/* Pixrect is for 386 architecture */
 #define MP_STATIC       16	/* Pixrect is a static pixrect */
-#endif i386
+#endif /* i386 */
 #define	MP_FONT		32	/* Pixrect is a part of a Pixfont */
 				/* (hint to pr_batchrop) */
 
@@ -144,18 +144,18 @@
 int	mem_put();
 int	mem_vector();
 Pixrect *mem_region();
-#endif KERNEL
+#endif	/* KERNEL */
 int	mem_putcolormap();
 int	mem_putattributes();
 #ifndef KERNEL
 int	mem_getcolormap();
 int	mem_getattributes();
-#endif KERNEL
+#endif /* KERNEL */
 
 #else /* NEWPIXMEM */
 #define	MP_NOTMPR(pr)	(0)
 extern struct pixrectops mem_ops;
 int	mem_destroy();
-#endif NEWPIXMEM
+#endif	/* NEWPIXMEM */
 
-#endif	!memvar_DEFINED
+#endif	/* !memvar_DEFINED */
diff -Naur pixrect-/pixfont.h pixrect/pixfont.h
--- pixrect-/pixfont.h	Mon Jun  5 04:39:17 2000
+++ pixrect/pixfont.h	Fri Oct 12 14:05:49 2001
@@ -43,7 +43,7 @@
 
 #define	prs_ttext(prpos, op, pf, str) \
 	pr_ttext((prpos).pr, (prpos).pos.x, (prpos).pos.y, pf, str)
-#endif lint
+#endif /* lint */
 
 Pixfont	*pf_open();
 Pixfont	*pf_open_private();
@@ -53,4 +53,4 @@
 
 #define	PIXFONT	Pixfont
 
-#endif	pixfont_DEFINED
+#endif	/* pixfont_DEFINED */
diff -Naur pixrect-/pixrect.h pixrect/pixrect.h
--- pixrect-/pixrect.h	Mon Jun  5 04:39:17 2000
+++ pixrect/pixrect.h	Fri Oct 12 14:03:31 2001
@@ -101,7 +101,7 @@
  * Takes device file name.  This is how a screen pixrect is created.
  */
 extern Pixrect *pr_open();
-#endif !KERNEL
+#endif	/* !KERNEL */
 
 /*
  * Pixrect ops vector, used by pr_ macros below to call the appropriate
@@ -118,18 +118,18 @@
 	int	(*pro_put)();
 	int	(*pro_vector)();
 	Pixrect * (*pro_region)();
-#endif !KERNEL
+#endif	/* !KERNEL */
 	int	(*pro_putcolormap)();
 #ifndef KERNEL
 	int	(*pro_getcolormap)();
-#endif !KERNEL
+#endif	/* !KERNEL */
 	int	(*pro_putattributes)();
 #ifndef KERNEL
 	int	(*pro_getattributes)();
-#endif !KERNEL
+#endif	/* !KERNEL */
 #ifdef KERNEL
 	int	(*pro_nop)();		/* place holder */
-#endif KERNEL
+#endif	/* KERNEL */
 };
 
 #if !defined(lint) || defined(KERNEL)
@@ -169,9 +169,9 @@
 		(red), (grn), (blu))
 #define	pr_getattributes(pr, planes) \
 	(*(pr)->pr_ops->pro_getattributes)((pr), (planes))
-#endif !KERNEL
+#endif	/* !KERNEL */	
 
-#else !lint || KERNEL
+#else /* !lint || KERNEL */
 
 extern pr_rop();
 extern pr_stencil();
@@ -186,7 +186,7 @@
 extern pr_putattributes();
 extern pr_getattributes();
 
-#endif lint
+#endif	/* lint */
 
 /*
  * Several of the above operations return a common, distinguished value when
@@ -277,7 +277,7 @@
 #define	pr_line(pr, x0, y0, x1, y1, brush, tex, op) \
 	pro_line((pr), (x0), (y0), (x1), (y1), (brush), (tex), (op), 0) 
 
-#else !lint || KERNEL
+#else /* !lint || KERNEL */
 
 extern prs_rop();
 extern prs_stencil();
@@ -296,7 +296,7 @@
 extern pr_close();
 extern pr_line();
 
-#endif !lint || KERNEL
+#endif /* !lint || KERNEL */
 
 
 
@@ -329,7 +329,7 @@
 #define	pr_getlut(pr, ind, cnt, red, grn, blu) \
 	(*(pr)->pr_ops->pro_getcolormap)((pr), PR_FORCE_UPDATE | (ind), \
 		(cnt), (red), (grn), (blu))
-#endif !KERNEL
+#endif	/* !KERNEL */
 
 
 #endif	/* !_pixrect_pixrect_h */
diff -Naur pixrect-/pr_line.h pixrect/pr_line.h
--- pixrect-/pr_line.h	Mon Jun  5 04:39:17 2000
+++ pixrect/pr_line.h	Fri Oct 12 14:06:54 2001
@@ -47,7 +47,7 @@
 	int width;
     } Pr_brush;
 
-#endif pr_line_h_DEFINED 
+#endif /* pr_line_h_DEFINED */
 
 
 
diff -Naur pixrect-/pr_planegroups.h pixrect/pr_planegroups.h
--- pixrect-/pr_planegroups.h	Mon Jun  5 04:39:17 2000
+++ pixrect/pr_planegroups.h	Fri Oct 12 14:04:05 2001
@@ -47,4 +47,4 @@
 extern void pr_set_plane_group();
 extern void pr_set_planes();
 
-#endif	pr_planegroups_DEFINED
+#endif /* pr_planegroups_DEFINED */
diff -Naur pixrect-/pr_util.h pixrect/pr_util.h
--- pixrect-/pr_util.h	Mon Jun  5 04:39:17 2000
+++ pixrect/pr_util.h	Fri Oct 12 14:04:36 2001
@@ -66,11 +66,11 @@
 		op;							\
 	};								\
 	asm("dbra	d6,label");
-#else mc68000
+#else	/* mc68000 */
 #define	rop_slowloop(n, op) \
 	{ register int _loop = (n); \
 		while (--_loop >= 0) { op; } }
-#endif mc68000
+#endif	/* mc68000 */
 
 #ifdef mc68010
 #define cases8(n, op)							\
@@ -88,9 +88,9 @@
 			cases8(0, op); \
 			case 0:	break; \
 		} }
-#else mc68010
+#else	/* mc68010 */
 #define	rop_fastloop	rop_slowloop
-#endif mc68010
+#endif	/* mc68010 */
 
 /*
  * Alloctype(datatype) allocates a datatype structure using calloc
@@ -133,6 +133,6 @@
 
 #ifndef KERNEL
 Pixrect *pr_makefromfd();
-#endif !KERNEL
+#endif	/* !KERNEL */
 
-#endif pr_util_DEFINED
+#endif	/* pr_util_DEFINED */
diff -Naur pixrect-/traprop.h pixrect/traprop.h
--- pixrect-/traprop.h	Mon Jun  5 04:39:17 2000
+++ pixrect/traprop.h	Fri Oct 12 14:06:02 2001
@@ -23,4 +23,4 @@
 	int y0, y1;			/* top+bottom boundaries */
 };
 
-#endif traprop_DEFINED
+#endif	/* traprop_DEFINED */