add static crt support

CMakeLists.txt

@@ -9,6 +9,12 @@ endif()
 include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include")
 
 set(DETOURS_LIB "${CMAKE_CURRENT_SOURCE_DIR}/lib/detours.lib")
+option(STATIC_CRT "Use static CRT" OFF)
+
+if (STATIC_CRT)
+    #add_link_options(/NODEFAULTLIB:libucrt)
+    set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+endif()
 
 set(ENABLE_ICONV OFF CACHE BOOL "Libiconv is not needed.")
 add_subdirectory(utils)