ENH: Added cmSystemTools::EnableMSVCDebugHook() to prevent error dialogs when CMake is invoked by Dart.

Source/cmSystemTools.cxx

@@ -2427,3 +2427,26 @@ void cmSystemTools::SplitProgramFromArgs(const char* path,
   program = "";
   args = "";
 }
+
+#if defined(_MSC_VER) && defined(_DEBUG)
+# include <crtdbg.h>
+# include <stdio.h>
+# include <stdlib.h>
+static int cmSystemToolsDebugReport(int, char* message, int*)
+{
+  if(getenv("DART_TEST_FROM_DART"))
+    {
+    fprintf(stderr, message);
+    exit(1);
+    }
+  return 0;
+}
+void cmSystemTools::EnableMSVCDebugHook()
+{
+  _CrtSetReportHook(cmSystemToolsDebugReport);
+}
+#else
+void cmSystemTools::EnableMSVCDebugHook()
+{
+}
+#endif