Only set the policy before the project command

Author: wravery

CMakeLists.txt

@@ -3,6 +3,9 @@
 
 cmake_minimum_required(VERSION 3.8.2)
 
+# Enable CMAKE_MSVC_RUNTIME_LIBRARY on Windows.
+cmake_policy(SET CMP0091 NEW)
+
 # Default to the last updated version from version.txt.
 file(TO_CMAKE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/version.txt" VERSION_FILE)
 file(READ "${VERSION_FILE}" LATEST_VERSION)
@@ -25,31 +28,35 @@ if(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/.git")
   endif()
 endif()
 
+project(cppgraphqlgen VERSION ${LATEST_VERSION})
+
+set(CMAKE_CXX_STANDARD 17)
+
+set(GRAPHQL_INSTALL_INCLUDE_DIR include CACHE PATH "Header file install directory")
+set(GRAPHQL_INSTALL_TOOLS_DIR bin CACHE PATH "schemagen install directory")
+set(GRAPHQL_INSTALL_CMAKE_DIR lib/cmake CACHE PATH "CMake config files install directory")
+set(GRAPHQL_INSTALL_CONFIGURATIONS ${CMAKE_CONFIGURATION_TYPES} CACHE STRING "Configurations which perform a full install")
+
+option(BUILD_SHARED_LIBS "Build shared libraries instead of static libs" OFF)
+
 if(VCPKG_TARGET_TRIPLET)
   message(STATUS "Using ${VCPKG_TARGET_TRIPLET} triplet with vcpkg")
+
   if(MSVC)
     # Match the MSVC runtime if we're using VCPKG with static libraries.
-    cmake_policy(SET CMP0091 NEW)
     if(VCPKG_TARGET_TRIPLET MATCHES [[^.+-static$]])
       set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+      message(STATUS "Using MSVC runtime static library")
     else()
       set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+      message(STATUS "Using MSVC runtime DLL")
     endif()
-    message(STATUS "Using ${CMAKE_MSVC_RUNTIME_LIBRARY} to match ${VCPKG_TARGET_TRIPLET}")
+
+    add_custom_target(output_msvc_runtime ALL
+      ${CMAKE_COMMAND} -E echo "Using ${CMAKE_MSVC_RUNTIME_LIBRARY} MSVC runtime to match ${VCPKG_TARGET_TRIPLET}")
   endif()
 endif()
 
-project(cppgraphqlgen VERSION ${LATEST_VERSION})
-
-set(CMAKE_CXX_STANDARD 17)
-
-set(GRAPHQL_INSTALL_INCLUDE_DIR include CACHE PATH "Header file install directory")
-set(GRAPHQL_INSTALL_TOOLS_DIR bin CACHE PATH "schemagen install directory")
-set(GRAPHQL_INSTALL_CMAKE_DIR lib/cmake CACHE PATH "CMake config files install directory")
-set(GRAPHQL_INSTALL_CONFIGURATIONS ${CMAKE_CONFIGURATION_TYPES} CACHE STRING "Configurations which perform a full install")
-
-option(BUILD_SHARED_LIBS "Build shared libraries instead of static libs" OFF)
-
 function(add_bigobj_flag target)
   if(MSVC)
     # MSVC requires the /bigobj flag if the number of sections gets too big.