$NetBSD: patch-ab,v 1.6 2022/11/08 12:10:18 wiz Exp $

Fix this so that NetBSD is also probed for altivec on powerpc
(and so that this builds).

https://gitlab.freedesktop.org/gstreamer/orc/-/merge_requests/81

--- orc/orccpu-powerpc.c.orig	2019-09-09 07:21:43.000000000 +0000
+++ orc/orccpu-powerpc.c
@@ -54,7 +54,7 @@
 
 #endif
 
-#if defined(__FreeBSD__) || defined(__APPLE__)
+#if defined(__FreeBSD__) || defined(__APPLE__) || defined(__NetBSD__)
 #include <sys/types.h>
 #include <sys/sysctl.h>
 #endif
@@ -86,9 +86,11 @@ test_altivec (void * ignored)
 }
 #endif
 
-#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
 #if defined(__APPLE__)
 #define SYSCTL "hw.vectorunit"
+#elif defined(__NetBSD__)
+#define SYSCTL "machdep.altivec"
 #else
 #define SYSCTL "hw.altivec"
 #endif
@@ -182,7 +184,7 @@ orc_check_powerpc_proc_auxv (void)
 }
 #endif
 
-#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__OpenBSD__) && !defined(__APPLE__) && !defined(__linux__)
+#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && !defined(__OpenBSD__) && !defined(__APPLE__) && !defined(__linux__) && !defined(__NetBSD__)
 static void
 orc_check_powerpc_fault (void)
 {
@@ -203,7 +205,7 @@ powerpc_detect_cpu_flags (void)
   if (inited) return;
   inited = 1;
 
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__APPLE__)
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__APPLE__) || defined(__NetBSD__)
   orc_check_powerpc_sysctl_bsd();
 #elif defined(__OpenBSD__)
   orc_check_powerpc_sysctl_openbsd();