cmFileTimeComparison: Update for lack of cmsys_STAT_HAS_ST_MTIM

The KWSys Configure.hxx header no longer exposes this value.
Take the value from the KWSys try compile result variable instead.

Source/CMakeLists.txt

@@ -548,6 +548,18 @@ foreach(v CURL_CA_BUNDLE CURL_CA_PATH)
   endif()
 endforeach()
 
+foreach(check
+    STAT_HAS_ST_MTIM
+    )
+  if(KWSYS_CXX_${check}_COMPILED) # abuse KWSys check cache entry
+    set(CMake_${check} 1)
+  else()
+    set(CMake_${check} 0)
+  endif()
+  set_property(SOURCE cmFileTimeComparison.cxx APPEND PROPERTY
+    COMPILE_DEFINITIONS CMake_${check}=${CMake_${check}})
+endforeach()
+
 # create a library used by the command line and the GUI
 add_library(CMakeLib ${SRCS})
 target_link_libraries(CMakeLib cmsys

Source/cmFileTimeComparison.cxx

@@ -148,7 +148,7 @@ int cmFileTimeComparisonInternal::Compare(cmFileTimeComparison_Type* s1,
                                           cmFileTimeComparison_Type* s2)
 {
 #if !defined(_WIN32) || defined(__CYGWIN__)
-# if cmsys_STAT_HAS_ST_MTIM
+# if CMake_STAT_HAS_ST_MTIM
   // Compare using nanosecond resolution.
   if(s1->st_mtim.tv_sec < s2->st_mtim.tv_sec)
     {
@@ -190,7 +190,7 @@ bool cmFileTimeComparisonInternal::TimesDiffer(cmFileTimeComparison_Type* s1,
                                                cmFileTimeComparison_Type* s2)
 {
 #if !defined(_WIN32) || defined(__CYGWIN__)
-# if cmsys_STAT_HAS_ST_MTIM
+# if CMake_STAT_HAS_ST_MTIM
   // Times are integers in units of 1ns.
   long long bil = 1000000000;
   long long t1 = s1->st_mtim.tv_sec * bil + s1->st_mtim.tv_nsec;