gis/grass: Fix for GDAL 3.3.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

gis/grass/gdal-3.3.patch

@@ -0,0 +1,84 @@
+From b86314c7f3b8aea961d380dbb836087b3990d7af Mon Sep 17 00:00:00 2001
+From: nilason <n_larsson@yahoo.com>
+Date: Thu, 6 May 2021 22:27:48 +0200
+Subject: [PATCH] v.hull: use standard C boolean type
+
+Fixes #1563
+---
+ vector/v.hull/chull.c | 21 +++++++++------------
+ 1 file changed, 9 insertions(+), 12 deletions(-)
+
+diff --git a/vector/v.hull/chull.c b/vector/v.hull/chull.c
+index 1ad97396fa..41b627c50f 100644
+--- a/vector/v.hull/chull.c
++++ b/vector/v.hull/chull.c
+@@ -22,6 +22,7 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <math.h>
++#include <stdbool.h>
+ 
+ #include <grass/gis.h>
+ #include <grass/vector.h>
+@@ -29,10 +30,6 @@
+ 
+ #include "globals.h"
+ 
+-/*Define Boolean type */
+-typedef enum
+-{ BFALSE, BTRUE } bool;
+-
+ /* Define vertex indices. */
+ #define X   0
+ #define Y   1
+@@ -76,10 +73,10 @@ struct tFaceStructure
+ };
+ 
+ /* Define flags */
+-#define ONHULL   	BTRUE
+-#define REMOVED  	BTRUE
+-#define VISIBLE  	BTRUE
+-#define PROCESSED	BTRUE
++#define ONHULL   	true
++#define REMOVED  	true
++#define VISIBLE  	true
++#define PROCESSED	true
+ 
+ /* Global variable definitions */
+ tVertex vertices = NULL;
+@@ -436,7 +433,7 @@ bool AddOne(tVertex p)
+     tFace f;
+     tEdge e, temp;
+     long int vol;
+-    bool vis = BFALSE;
++    bool vis = false;
+ 
+ 
+     /* Mark faces visible from p. */
+@@ -446,7 +443,7 @@ bool AddOne(tVertex p)
+ 
+ 	if (vol < 0) {
+ 	    f->visible = VISIBLE;
+-	    vis = BTRUE;
++	    vis = true;
+ 	}
+ 	f = f->next;
+     } while (f != faces);
+@@ -454,7 +451,7 @@ bool AddOne(tVertex p)
+     /* If no faces are visible from p, then p is inside the hull. */
+     if (!vis) {
+ 	p->onhull = !ONHULL;
+-	return BFALSE;
++	return false;
+     }
+ 
+     /* Mark edges in interior of visible region for deletion.
+@@ -470,7 +467,7 @@ bool AddOne(tVertex p)
+ 	    e->newface = MakeConeFace(e, p);
+ 	e = temp;
+     } while (e != edges);
+-    return BTRUE;
++    return true;
+ }
+ 
+ /*---------------------------------------------------------------------

gis/grass/grass.SlackBuild

@@ -73,6 +73,8 @@ find -L . \
 # Option handling:
 set -- $(echo $ENABLE | sed 's/,/ /g')
 
+patch -p1 < $CWD/gdal-3.3.patch
+
 while [ "$1" != "" ]; do
   case "$1"
   in