Merge pull request #1177 from opoplawski/interface

Set INSTALL_INTERFACE to CMAKE_INSTALL_INCLUDEDIR

Author: redboltz

CMakeLists.txt

@@ -136,7 +136,7 @@ IF (MSGPACK_ENABLE_SHARED OR MSGPACK_ENABLE_STATIC)
             $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
             $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
             $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include/msgpack>
-            $<INSTALL_INTERFACE:include>
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
         PRIVATE
             ${CMAKE_CURRENT_SOURCE_DIR}
     )
@@ -154,7 +154,7 @@ IF (MSGPACK_ENABLE_SHARED AND MSGPACK_ENABLE_STATIC)
             $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
             $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
             $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include/msgpack>
-            $<INSTALL_INTERFACE:include>
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
         PRIVATE
             ${CMAKE_CURRENT_SOURCE_DIR}
     )