From f7f13c70c87195f6c98c1736682a5555134c83c2 Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Sun, 4 Mar 2018 15:17:03 +0100
Subject: [PATCH] Define AT_HWCAP/AT_HWCAP2 if getauxval unavailable (#594)

If CRYPTOPP_GETAUXV_AVAILABLE is undefined, getauxval function is
defined to return 0 however AT_HWCAP and AT_HWCAP2 are not defined so
compilation on toolchain without getauxval and these variables such as
uclibc-ng will fail.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
 cpu.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/cpu.cpp b/cpu.cpp
index ba33be41..9f190508 100644
--- a/cpu.cpp
+++ b/cpu.cpp
@@ -30,6 +30,12 @@
 #if CRYPTOPP_GETAUXV_AVAILABLE
 # include <sys/auxv.h>
 #else
+#ifndef AT_HWCAP
+#define AT_HWCAP 16
+#endif
+#ifndef AT_HWCAP2
+#define AT_HWCAP2 26
+#endif
 unsigned long int getauxval(unsigned long int) { return 0; }
 #endif