Merge topic 'fix-build-interface'

6e190d9a Fix include directory usage requirement for build tree

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !88

CMakeLists.txt

@@ -922,7 +922,7 @@ IF(KWSYS_C_SRCS OR KWSYS_CXX_SRCS)
   # Set up include usage requirement
   IF(COMMAND TARGET_INCLUDE_DIRECTORIES)
     TARGET_INCLUDE_DIRECTORIES(${KWSYS_TARGET_INTERFACE} INTERFACE
-      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
+      $<BUILD_INTERFACE:${KWSYS_HEADER_ROOT}>)
     IF(KWSYS_INSTALL_INCLUDE_DIR)
       TARGET_INCLUDE_DIRECTORIES(${KWSYS_TARGET_INTERFACE} INTERFACE
         $<INSTALL_INTERFACE:${KWSYS_INSTALL_INCLUDE_DIR}>)
@@ -976,7 +976,7 @@ IF(KWSYS_ENABLE_C AND KWSYS_C_SRCS)
   # Set up include usage requirement
   IF(COMMAND TARGET_INCLUDE_DIRECTORIES)
     TARGET_INCLUDE_DIRECTORIES(${KWSYS_TARGET_C_INTERFACE} INTERFACE
-      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
+      $<BUILD_INTERFACE:${KWSYS_HEADER_ROOT}>)
     IF(KWSYS_INSTALL_INCLUDE_DIR)
       TARGET_INCLUDE_DIRECTORIES(${KWSYS_TARGET_C_INTERFACE} INTERFACE
         $<INSTALL_INTERFACE:${KWSYS_INSTALL_INCLUDE_DIR}>)