1 files changed, 27 insertions, 0 deletions
diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index f5fba5c..89a241d 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -2691,6 +2691,33 @@ bool cmSystemTools::ChangeRPath(std::string const& file,
 }
 
 //----------------------------------------------------------------------------
+bool cmSystemTools::VersionCompare(cmSystemTools::CompareOp op,
+                                   const char* lhss, const char* rhss)
+{
+  unsigned int lhs[4] = {0,0,0,0};
+  unsigned int rhs[4] = {0,0,0,0};
+  sscanf(lhss, "%u.%u.%u.%u", &lhs[0], &lhs[1], &lhs[2], &lhs[3]);
+  sscanf(rhss, "%u.%u.%u.%u", &rhs[0], &rhs[1], &rhs[2], &rhs[3]);
+
+  // Do component-wise comparison.
+  for(unsigned int i=0; i < 4; ++i)
+    {
+    if(lhs[i] < rhs[i])
+      {
+      // lhs < rhs, so true if operation is LESS
+      return op == cmSystemTools::OP_LESS;
+      }
+    else if(lhs[i] > rhs[i])
+      {
+      // lhs > rhs, so true if operation is GREATER
+        return op == cmSystemTools::OP_GREATER;
+      }
+    }
+  // lhs == rhs, so true if operation is EQUAL
+  return op == cmSystemTools::OP_EQUAL;
+}
+
+//----------------------------------------------------------------------------
 bool cmSystemTools::RemoveRPath(std::string const& file, std::string* emsg,
                                 bool* removed)
 {