In android ndk doesn't exist librt and libpthread

Signed-off-by: Arenoros <arenoros@gmail.com>

CMakeLists.txt

@@ -72,6 +72,9 @@ if (WITH_THREADING)
 			set (PTHREAD_LIBRARIES C:\\pthreads\\Pre-built.2\\lib\\x86\\pthreadVC2.lib)
 		endif (CMAKE_CL_64)
 		set (PTHREAD_INCLUDE_DIR C:\\pthreads\\Pre-built.2\\include)
+	elseif (ANDROID)
+		set (PTHREAD_LIBRARIES "")
+		set (PTHREAD_INCLUDE_DIR "")
 	else (WIN32)
 		find_library(LIBPTHREAD pthread)
 		if (LIBPTHREAD)

lib/CMakeLists.txt

@@ -60,7 +60,7 @@ set(C_SRC
 
 set (LIBRARIES ${OPENSSL_LIBRARIES} ${PTHREAD_LIBRARIES})
 
-if (UNIX AND NOT APPLE)
+if (UNIX AND NOT APPLE AND NOT ANDROID)
 	find_library(LIBRT rt)
 	if (LIBRT)
 		set (LIBRARIES ${LIBRARIES} rt)