From a577c3fe79dbdda7e027d14344ee682e64c21e73 Mon Sep 17 00:00:00 2001
From: pkubaj <pkubaj@FreeBSD.org>
Date: Mon, 29 Nov 2021 00:03:45 +0000
Subject: [PATCH] Fix build on FreeBSD/armv7

1. FreeBSD uses elf_aux_info instead of getauxval.
2. FreeBSD uses HWCAP_NEON macro for Neon.
---
 src/zm_utils.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/zm_utils.cpp b/src/zm_utils.cpp
index 7d2bbc888..b4e9a86d1 100644
--- a/src/zm_utils.cpp
+++ b/src/zm_utils.cpp
@@ -224,8 +224,15 @@ void HwCapsDetect() {
 #elif defined(__arm__)
   // ARM processor in 32bit mode
   // To see if it supports NEON, we need to get that information from the kernel
+  #ifdef __linux__
   unsigned long auxval = getauxval(AT_HWCAP);
   if (auxval & HWCAP_ARM_NEON) {
+  #elif defined(__FreeBSD__)
+  unsigned long auxval = 0;
+  elf_aux_info(AT_HWCAP, &auxval, sizeof(auxval));
+  if (auxval & HWCAP_NEON) {
+  #error Unsupported OS.
+  #endif
     Debug(1,"Detected ARM (AArch32) processor with Neon");
     neonversion = 1;
   } else {