Remove unneeded libs (#262)

* remove MurmurHash2

sources/CMakeLists.txt

@@ -24,11 +24,6 @@ set(CC_UTILS_SOURCES
   ${CMAKE_CURRENT_LIST_DIR}/xxtea/xxtea.h
 )
 
-set(CC_MURMURHASH2_SOURCES
-  ${CMAKE_CURRENT_LIST_DIR}/MurmurHash2/MurmurHash2.cpp
-  ${CMAKE_CURRENT_LIST_DIR}/MurmurHash2/MurmurHash2.h
-)
-
 set(CC_EXTERNAL_SOURCES
 
   ${CMAKE_CURRENT_LIST_DIR}/tommyds/tommy.c
@@ -40,7 +35,6 @@ if(NOT USE_MODULES)
     ${CC_UNZIP_SOURCES}
     ${CC_TINYDIR_SOURCES}
     ${CC_UTILS_SOURCES}
-    ${CC_MURMURHASH2_SOURCES}
   )
 endif()
 

sources/MurmurHash2/MurmurHash2.cpp

@@ -1,71 +0,0 @@
-//-----------------------------------------------------------------------------
-// MurmurHash2, by Austin Appleby
-
-// Note - This code makes a few assumptions about how your machine behaves -
-
-// 1. We can read a 4-byte value from any address without crashing
-// 2. sizeof(int) == 4
-
-// And it has a few limitations -
-
-// 1. It will not work incrementally.
-// 2. It will not produce the same results on little-endian and big-endian
-//    machines.
-
-#include "MurmurHash2.h"
-
-namespace murmurhash2 {
-
-unsigned int MurmurHash2 ( const void * key, int len, unsigned int seed )
-{
-	// 'm' and 'r' are mixing constants generated offline.
-	// They're not really 'magic', they just happen to work well.
-
-	const unsigned int m = 0x5bd1e995;
-	const int r = 24;
-
-	// Initialize the hash to a 'random' value
-
-	unsigned int h = seed ^ len;
-
-	// Mix 4 bytes at a time into the hash
-
-	const unsigned char * data = (const unsigned char *)key;
-
-	while(len >= 4)
-	{
-		unsigned int k = *(unsigned int *)data;
-
-		k *= m; 
-		k ^= k >> r; 
-		k *= m; 
-		
-		h *= m; 
-		h ^= k;
-
-		data += 4;
-		len -= 4;
-	}
-	
-	// Handle the last few bytes of the input array
-
-	switch(len)
-	{
-	case 3: h ^= data[2] << 16;
-	case 2: h ^= data[1] << 8;
-	case 1: h ^= data[0];
-	        h *= m;
-	};
-
-	// Do a few final mixes of the hash to ensure the last few
-	// bytes are well-incorporated.
-
-	h ^= h >> 13;
-	h *= m;
-	h ^= h >> 15;
-
-	return h;
-}
-
-} // namespace murmurhash2 {
-

sources/MurmurHash2/MurmurHash2.h

@@ -1,7 +0,0 @@
-#pragma once
-
-namespace murmurhash2 {
-
-unsigned int MurmurHash2( const void * key, int len, unsigned int seed );
-
-}

versions.txt

@@ -116,7 +116,4 @@ glslang (Built using https://github.com/YunHsiao/glslang/tree/build)
     android:    11.5.0 (commit: 1978c76)
     mac:        11.5.0 (commit: 1978c76)
     ios:        11.5.0 (commit: 1978c76)
-
-MurmurHash2
-    all-platforms: (no version informantion): https://sites.google.com/site/murmurhash