From 4c4a204bee6620d073d3ccfb98166c5f22509dd9 Mon Sep 17 00:00:00 2001
From: arvidn <arvid@cs.umu.se>
Date: Sun, 22 Jan 2017 00:03:54 -0500
Subject: [PATCH] fix inclusion of auxv.h header and definition of
 TORRENT_ANDROID

---
 include/libtorrent/config.hpp |  3 +--
 src/cpuid.cpp                 | 15 ++++++++++++---
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/include/libtorrent/config.hpp b/include/libtorrent/config.hpp
index ecac833a3..5283f8208 100644
--- a/include/libtorrent/config.hpp
+++ b/include/libtorrent/config.hpp
@@ -183,13 +183,12 @@ POSSIBILITY OF SUCH DAMAGE.
 
 // ===== ANDROID ===== (almost linux, sort of)
 #if defined __ANDROID__
-#define TORRENT_ANDROID 1
+#define TORRENT_ANDROID
 #define TORRENT_HAS_FALLOCATE 0
 #define TORRENT_USE_ICONV 0
 #define TORRENT_USE_IFADDRS 0
 #define TORRENT_USE_MEMALIGN 1
 #else // ANDROID
-#define TORRENT_ANDROID 0
 #define TORRENT_USE_IFADDRS 1
 #define TORRENT_USE_POSIX_MEMALIGN 1
 
diff --git a/src/cpuid.cpp b/src/cpuid.cpp
index a061609d1..6de1d1836 100644
--- a/src/cpuid.cpp
+++ b/src/cpuid.cpp
@@ -46,7 +46,16 @@ POSSIBILITY OF SUCH DAMAGE.
 #include <cstring> // for std::memset
 #endif
 
-#if TORRENT_HAS_ARM && TORRENT_HAS_ARM_NEON
+#if defined __GLIBC__ && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 16))
+#define TORRENT_HAS_AUXV 1
+#elif defined TORRENT_ANDROID
+#define TORRENT_HAS_AUXV 1
+#else
+#define TORRENT_HAS_AUXV 0
+#endif
+
+
+#if TORRENT_HAS_ARM && TORRENT_HAS_AUXV
 #include <sys/auxv.h>
 #endif
 
@@ -95,7 +104,7 @@ namespace libtorrent { namespace aux
 
 	bool supports_arm_neon()
 	{
-#if TORRENT_HAS_ARM_NEON
+#if TORRENT_HAS_ARM_NEON && TORRENT_HAS_AUXV
 #if defined __arm__
 		//return (getauxval(AT_HWCAP) & HWCAP_NEON);
 		return (getauxval(16) & (1 << 12));
@@ -112,7 +121,7 @@ namespace libtorrent { namespace aux
 
 	bool supports_arm_crc32c()
 	{
-#if TORRENT_HAS_ARM_CRC32
+#if TORRENT_HAS_ARM_CRC32 && TORRENT_HAS_AUXV
 #if defined TORRENT_FORCE_ARM_CRC32
 		return true;
 #elif defined __arm__