Only define FreeBSD hwcaps stuff if ARM crypto is enabled for compiled.

node/Utils.cpp

@@ -50,37 +50,42 @@
 #include <asm/hwcap.h>
 #endif
 
+#ifdef ZT_ARCH_ARM_HAS_NEON
+
+#ifdef __LINUX__
+#include <sys/auxv.h>
+#include <asm/hwcap.h>
+#endif
+
 #if defined(__FreeBSD__)
 #include <elf.h>
 #include <sys/auxv.h>
-static inline long getauxval(int caps) {
+static inline long getauxval(int caps)
+{
 	long hwcaps = 0;
 	elf_aux_info(caps, &hwcaps, sizeof(hwcaps));
 	return hwcaps;
 }
 #endif
 
-// If these are not even defined, then they're not supported at all
+// If these are not even defined, obviously they are not supported.
 #ifndef HWCAP_AES
 #define HWCAP_AES 0
 #endif
-
 #ifndef HWCAP_CRC32
 #define HWCAP_CRC32 0
 #endif
-
 #ifndef HWCAP_PMULL
 #define HWCAP_PMULL 0
 #endif
-
 #ifndef HWCAP_SHA1
 #define HWCAP_SHA1 0
 #endif
-
 #ifndef HWCAP_SHA2
 #define HWCAP_SHA2 0
 #endif
 
+#endif // ZT_ARCH_ARM_HAS_NEON
 
 namespace ZeroTier {