Remove SQLITECPP_USE_STATIC_RUNTIME altogether

Use gtest_force_shared_crt to force googletest to link against the default dynamic C++ runtime

CMakeLists.txt

@@ -35,27 +35,14 @@ if (MSVC)
     set(CPPCHECK_ARG_TEMPLATE   "--template=vs")
     # disable Visual Studio warnings for fopen() used in the example
     add_definitions(-D_CRT_SECURE_NO_WARNINGS)
-    # Flags for linking with multithread static C++ runtime, required by internal googletest
-    # inspired from Zlib licensed glfw https://github.com/glfw/glfw/blob/master/CMakeLists.txt
-    option(SQLITECPP_USE_STATIC_RUNTIME "Use MSVC static runtime (default for internal googletest)." ${SQLITECPP_BUILD_TESTS})
-    if (SQLITECPP_USE_STATIC_RUNTIME)
-        message(STATUS "Linking against multithread static C++ runtime")
-        foreach (flag CMAKE_C_FLAGS
-                      CMAKE_C_FLAGS_DEBUG
-                      CMAKE_C_FLAGS_RELEASE
-                      CMAKE_C_FLAGS_MINSIZEREL
-                      CMAKE_C_FLAGS_RELWITHDEBINFO
-                      CMAKE_CXX_FLAGS
-                      CMAKE_CXX_FLAGS_DEBUG
-                      CMAKE_CXX_FLAGS_RELEASE
-                      CMAKE_CXX_FLAGS_MINSIZEREL
-                      CMAKE_CXX_FLAGS_RELWITHDEBINFO)
-
-            string(REGEX REPLACE "/MDd" "/MTd" ${flag} "${${flag}}")
-            string(REGEX REPLACE "/MD" "/MT" ${flag} "${${flag}}")
-
-        endforeach()
-    endif (SQLITECPP_USE_STATIC_RUNTIME)
+
+    # Flags for linking with MSVC C++ runtime when using googletest
+    if (SQLITECPP_BUILD_TESTS)
+        # Use shared (DLL) run-time lib even when Google Test is built as static lib.
+        set(gtest_force_shared_crt ON)
+        message(STATUS "Force googletest to link against dynamic C++ runtime")
+    endif (SQLITECPP_BUILD_TESTS)
+
     # MSVC versions prior to 2015 are not supported anymore by SQLiteC++ 3.x
     if (MSVC_VERSION LESS 1900) # OR MSVC_TOOLSET_VERSION LESS 140)
       message(ERROR "Visual Studio prior to 2015 is not supported anymore.")