Merge topic 'utimensat-depends-on-deploy-target'

99ffa991 cmake: clear some configure checks when the deployment target changes

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !214

CMakeLists.txt

@@ -98,6 +98,16 @@ foreach(p
   endif()
 endforeach()
 
+# Some configure checks depend upon the deployment target. Clear checks when
+# the deployment target changes.
+if (APPLE)
+  if (NOT CMAKE_OSX_DEPLOYMENT_TARGET STREQUAL KWSYS_LAST_OSX_DEPLOYMENT_TARGET)
+    unset(KWSYS_CXX_HAS_UTIMENSAT CACHE)
+  endif ()
+  set(KWSYS_LAST_OSX_DEPLOYMENT_TARGET "${CMAKE_OSX_DEPLOYMENT_TARGET}"
+    CACHE INTERNAL "remember the last deployment target to trigger configure rechecks")
+endif ()
+
 #-----------------------------------------------------------------------------
 # If a namespace is not specified, use "kwsys" and enable testing.
 # This should be the case only when kwsys is not included inside