4 files changed, 49 insertions, 18 deletions
diff --git a/Source/kwsys/CMakeLists.txt b/Source/kwsys/CMakeLists.txt
index 84010d8..ce7f563 100644
--- a/Source/kwsys/CMakeLists.txt
+++ b/Source/kwsys/CMakeLists.txt
@@ -342,11 +342,6 @@ ENDIF()
 # capabilities and parent project's request.  Enforce 0/1 as only
 # possible values for configuration into Configure.hxx.
 
-IF(UNIX)
-  KWSYS_PLATFORM_CXX_TEST(KWSYS_STAT_HAS_ST_MTIM
-    "Checking whether struct stat has st_mtim member" DIRECT)
-ENDIF()
-
 # Check existence and uniqueness of long long and __int64.
 KWSYS_PLATFORM_CXX_TEST(KWSYS_CXX_HAS_LONG_LONG
   "Checking whether C++ compiler has 'long long'" DIRECT)
@@ -511,12 +506,18 @@ IF(KWSYS_USE_SystemTools)
     "Checking whether CXX compiler has utimes" DIRECT)
   KWSYS_PLATFORM_CXX_TEST(KWSYS_CXX_HAS_UTIMENSAT
     "Checking whether CXX compiler has utimensat" DIRECT)
+  KWSYS_PLATFORM_CXX_TEST(KWSYS_CXX_STAT_HAS_ST_MTIM
+    "Checking whether CXX compiler struct stat has st_mtim member" DIRECT)
+  KWSYS_PLATFORM_CXX_TEST(KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
+    "Checking whether CXX compiler struct stat has st_mtimespec member" DIRECT)
   SET_PROPERTY(SOURCE SystemTools.cxx APPEND PROPERTY COMPILE_DEFINITIONS
     KWSYS_CXX_HAS_SETENV=${KWSYS_CXX_HAS_SETENV}
     KWSYS_CXX_HAS_UNSETENV=${KWSYS_CXX_HAS_UNSETENV}
     KWSYS_CXX_HAS_ENVIRON_IN_STDLIB_H=${KWSYS_CXX_HAS_ENVIRON_IN_STDLIB_H}
     KWSYS_CXX_HAS_UTIMES=${KWSYS_CXX_HAS_UTIMES}
     KWSYS_CXX_HAS_UTIMENSAT=${KWSYS_CXX_HAS_UTIMENSAT}
+    KWSYS_CXX_STAT_HAS_ST_MTIM=${KWSYS_CXX_STAT_HAS_ST_MTIM}
+    KWSYS_CXX_STAT_HAS_ST_MTIMESPEC=${KWSYS_CXX_STAT_HAS_ST_MTIMESPEC}
     )
 ENDIF()
 
diff --git a/Source/kwsys/Configure.hxx.in b/Source/kwsys/Configure.hxx.in
index 3faf862..ff8e49d 100644
--- a/Source/kwsys/Configure.hxx.in
+++ b/Source/kwsys/Configure.hxx.in
@@ -18,9 +18,6 @@
 /* Whether wstring is available.  */
 #define @KWSYS_NAMESPACE@_STL_HAS_WSTRING @KWSYS_STL_HAS_WSTRING@
 
-/* Whether struct stat has the st_mtim member for high resolution times.  */
-#define @KWSYS_NAMESPACE@_STAT_HAS_ST_MTIM @KWSYS_STAT_HAS_ST_MTIM@
-
 /* If building a C++ file in kwsys itself, give the source file
    access to the macros without a configured namespace.  */
 #if defined(KWSYS_NAMESPACE)
@@ -28,7 +25,6 @@
 #  define kwsys     @KWSYS_NAMESPACE@
 # endif
 # define KWSYS_NAME_IS_KWSYS            @KWSYS_NAMESPACE@_NAME_IS_KWSYS
-# define KWSYS_STAT_HAS_ST_MTIM         @KWSYS_NAMESPACE@_STAT_HAS_ST_MTIM
 # define KWSYS_STL_HAS_WSTRING          @KWSYS_NAMESPACE@_STL_HAS_WSTRING
 #endif
 
diff --git a/Source/kwsys/SystemTools.cxx b/Source/kwsys/SystemTools.cxx
index 262af27..da34eb9 100644
--- a/Source/kwsys/SystemTools.cxx
+++ b/Source/kwsys/SystemTools.cxx
@@ -1366,15 +1366,18 @@ bool SystemTools::Touch(const std::string& filename, bool create)
   struct timeval mtime;
   gettimeofday(&mtime, 0);
 # if KWSYS_CXX_HAS_UTIMES
-  struct timeval times[2] =
-    {
-#  if KWSYS_STAT_HAS_ST_MTIM
-      {st.st_atim.tv_sec, st.st_atim.tv_nsec/1000}, /* tv_sec, tv_usec */
+  struct timeval atime;
+#  if KWSYS_CXX_STAT_HAS_ST_MTIM
+  atime.tv_sec = st.st_atim.tv_sec;
+  atime.tv_usec = st.st_atim.tv_nsec/1000;
+#  elif KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
+  atime.tv_sec = st.st_atimespec.tv_sec;
+  atime.tv_usec = st.st_atimespec.tv_nsec/1000;
 #  else
-      {st.st_atime, 0},
+  atime.tv_sec = st.st_atime;
+  atime.tv_usec = 0;
 #  endif
-      mtime
-    };
+  struct timeval times[2] = { atime, mtime };
   if(utimes(filename.c_str(), times) < 0)
     {
     return false;
@@ -1408,7 +1411,7 @@ bool SystemTools::FileTimeCompare(const std::string& f1,
     {
     return false;
     }
-# if KWSYS_STAT_HAS_ST_MTIM
+# if KWSYS_CXX_STAT_HAS_ST_MTIM
   // Compare using nanosecond resolution.
   if(s1.st_mtim.tv_sec < s2.st_mtim.tv_sec)
     {
@@ -1426,6 +1429,24 @@ bool SystemTools::FileTimeCompare(const std::string& f1,
     {
     *result = 1;
     }
+# elif KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
+  // Compare using nanosecond resolution.
+  if(s1.st_mtimespec.tv_sec < s2.st_mtimespec.tv_sec)
+    {
+    *result = -1;
+    }
+  else if(s1.st_mtimespec.tv_sec > s2.st_mtimespec.tv_sec)
+    {
+    *result = 1;
+    }
+  else if(s1.st_mtimespec.tv_nsec < s2.st_mtimespec.tv_nsec)
+    {
+    *result = -1;
+    }
+  else if(s1.st_mtimespec.tv_nsec > s2.st_mtimespec.tv_nsec)
+    {
+    *result = 1;
+    }
 # else
   // Compare using 1 second resolution.
   if(s1.st_mtime < s2.st_mtime)
diff --git a/Source/kwsys/kwsysPlatformTestsCXX.cxx b/Source/kwsys/kwsysPlatformTestsCXX.cxx
index 94579b3..9626937 100644
--- a/Source/kwsys/kwsysPlatformTestsCXX.cxx
+++ b/Source/kwsys/kwsysPlatformTestsCXX.cxx
@@ -32,7 +32,7 @@ int main()
 }
 #endif
 
-#ifdef TEST_KWSYS_STAT_HAS_ST_MTIM
+#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIM
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
@@ -45,6 +45,19 @@ int main()
 }
 #endif
 
+#ifdef TEST_KWSYS_CXX_STAT_HAS_ST_MTIMESPEC
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+int main()
+{
+  struct stat stat1;
+  (void)stat1.st_mtimespec.tv_sec;
+  (void)stat1.st_mtimespec.tv_nsec;
+  return 0;
+}
+#endif
+
 #ifdef TEST_KWSYS_CXX_SAME_LONG_AND___INT64
 void function(long**) {}
 int main()