File isl.patch of Package gcc6

--- gcc-6.5.0/gcc/graphite-isl-ast-to-gimple.c	2023-07-20 15:43:29.345965427 +0200
+++ gcc-6.5.0/gcc/graphite-isl-ast-to-gimple.c	2023-07-20 15:48:24.799342592 +0200
@@ -56,6 +56,8 @@
 #include "value-prof.h"
 #include "graphite.h"
 
+#include <isl/val.h>
+
 /* We always try to use signed 128 bit types, but fall back to smaller types
    in case a platform does not provide types of these sizes. In the future we
    should use isl to derive the optimal type for each subexpression.  */
--- gcc-6.5.0/gcc/graphite-optimize-isl.c	2023-07-20 15:43:29.342632092 +0200
+++ gcc-6.5.0/gcc/graphite-optimize-isl.c	2023-07-20 15:56:06.272716902 +0200
@@ -39,6 +39,8 @@
 #include "dumpfile.h"
 #include "graphite.h"
 
+#include <isl/val.h>
+
 #ifdef HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS
 /* isl 0.15 or later.  */