Merge pull request #682 from paperchalice/cmake

Check BCryptGenRandom correctly

Author: sjaeckel

CMakeLists.txt

@@ -121,7 +121,8 @@ endif()
 
 if(MSVC)
     cmake_push_check_state()
-    check_symbol_exists(BCryptGenRandom bcrypt.h BCRYPT_AVAILABLE)
+    set(CMAKE_REQUIRED_LIBRARIES bcrypt)
+    check_symbol_exists(BCryptGenRandom Windows.h;bcrypt.h BCRYPT_AVAILABLE)
     cmake_pop_check_state()
     if(BCRYPT_AVAILABLE)
         target_link_libraries(${PROJECT_NAME} PRIVATE Bcrypt)