From 46f43bc4f78018e0e581938b1def9a18216ff5fb Mon Sep 17 00:00:00 2001
From: Cameron Cawley <ccawley2011@gmail.com>
Date: Sun, 13 May 2018 11:34:32 +0100
Subject: [PATCH 1/2] cryptopp: Fix compilation on non-x86/x86_64 systems

---
 externals/cryptopp/CMakeLists.txt | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/externals/cryptopp/CMakeLists.txt b/externals/cryptopp/CMakeLists.txt
index add5fb444..e5e63d83f 100644
--- a/externals/cryptopp/CMakeLists.txt
+++ b/externals/cryptopp/CMakeLists.txt
@@ -189,13 +189,20 @@ if(MSVC AND NOT CRYPTOPP_DISABLE_ASM)
 endif()
 
 if ((CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU") AND NOT CRYPTOPP_DISABLE_ASM)
-    if(${CMAKE_GENERATOR} MATCHES ".*ARM")
-        message(STATUS "Disabling ASM because ARM is specified as target platform.")
-    else()
-        set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/rijndael-simd.cpp PROPERTIES COMPILE_FLAGS "-msse4.1 -maes")
-        set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/sha-simd.cpp PROPERTIES COMPILE_FLAGS "-msse4.2 -msha")
+    check_cxx_compiler_flag(-msse2 CRYPTOPP_HAS_MSSE2)
+    check_cxx_compiler_flag(-msse4.1 CRYPTOPP_HAS_MSSE41)
+    check_cxx_compiler_flag(-msse4.2 CRYPTOPP_HAS_MSSE42)
+    check_cxx_compiler_flag(-maes CRYPTOPP_HAS_MAES)
+    check_cxx_compiler_flag(-msha CRYPTOPP_HAS_MSHA)
+    if (CRYPTOPP_HAS_MSSE2)
         set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/sse-simd.cpp PROPERTIES COMPILE_FLAGS "-msse2")
     endif()
+    if (CRYPTOPP_HAS_MSSE41 AND CRYPTOPP_HAS_MAES)
+        set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/rijndael-simd.cpp PROPERTIES COMPILE_FLAGS "-msse4.1 -maes")
+    endif()
+    if (CRYPTOPP_HAS_MSSE42 AND CRYPTOPP_HAS_MSHA)
+        set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/cryptopp/sha-simd.cpp PROPERTIES COMPILE_FLAGS "-msse4.2 -msha")
+    endif()
 endif()
 
 #============================================================================

From 101d8964f1cf0a390e94e20139a6262cb727d4ad Mon Sep 17 00:00:00 2001
From: Cameron Cawley <ccawley2011@gmail.com>
Date: Sun, 13 May 2018 11:34:45 +0100
Subject: [PATCH 2/2] common: Fix compilation on ARM

---
 src/common/common_funcs.h | 4 +---
 src/common/swap.h         | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/common/common_funcs.h b/src/common/common_funcs.h
index d1a716d11..ecb71224c 100644
--- a/src/common/common_funcs.h
+++ b/src/common/common_funcs.h
@@ -4,7 +4,7 @@
 
 #pragma once
 
-#if !defined(ARCHITECTURE_x86_64) && !defined(ARCHITECTURE_ARM)
+#if !defined(ARCHITECTURE_x86_64)
 #include <cstdlib> // for exit
 #endif
 #include "common/common_types.h"
@@ -32,8 +32,6 @@
 
 #ifdef ARCHITECTURE_x86_64
 #define Crash() __asm__ __volatile__("int $3")
-#elif defined(ARCHITECTURE_ARM)
-#define Crash() __asm__ __volatile__("trap")
 #else
 #define Crash() exit(1)
 #endif
diff --git a/src/common/swap.h b/src/common/swap.h
index f025f7450..3970a42a1 100644
--- a/src/common/swap.h
+++ b/src/common/swap.h
@@ -69,7 +69,7 @@ inline u32 swap32(u32 _data) {
 inline u64 swap64(u64 _data) {
     return _byteswap_uint64(_data);
 }
-#elif ARCHITECTURE_ARM
+#elif defined(ARCHITECTURE_ARM) && (__ARM_ARCH >= 6)
 inline u16 swap16(u16 _data) {
     u32 data = _data;
     __asm__("rev16 %0, %1\n" : "=l"(data) : "l"(data));