3 files changed, 29 insertions, 1 deletions
diff --git a/Source/cmGeneratorExpressionEvaluator.cxx b/Source/cmGeneratorExpressionEvaluator.cxx
index 80b16d3..1feb03a 100644
--- a/Source/cmGeneratorExpressionEvaluator.cxx
+++ b/Source/cmGeneratorExpressionEvaluator.cxx
@@ -412,10 +412,32 @@ struct CompilerIdNode : public cmGeneratorExpressionNode
       return parameters.front().empty() ? "1" : "0";
       }
 
-    if (cmsysString_strcasecmp(parameters.begin()->c_str(), compilerId) == 0)
+    if (strcmp(parameters.begin()->c_str(), compilerId) == 0)
       {
       return "1";
       }
+
+    if (cmsysString_strcasecmp(parameters.begin()->c_str(), compilerId) == 0)
+      {
+      switch(context->Makefile->GetPolicyStatus(cmPolicies::CMP0044))
+        {
+        case cmPolicies::WARN:
+          {
+          cmOStringStream e;
+          e << context->Makefile->GetPolicies()
+                      ->GetPolicyWarning(cmPolicies::CMP0044);
+          context->Makefile->GetCMakeInstance()
+                 ->IssueMessage(cmake::AUTHOR_WARNING,
+                                e.str().c_str(), context->Backtrace);
+          }
+        case cmPolicies::OLD:
+          return "1";
+        case cmPolicies::NEW:
+        case cmPolicies::REQUIRED_ALWAYS:
+        case cmPolicies::REQUIRED_IF_USED:
+          break;
+        }
+      }
     return "0";
   }
 };
diff --git a/Source/cmPolicies.cxx b/Source/cmPolicies.cxx
index 32c1476..c9dacaf 100644
--- a/Source/cmPolicies.cxx
+++ b/Source/cmPolicies.cxx
@@ -321,6 +321,11 @@ cmPolicies::cmPolicies()
     CMP0043, "CMP0043",
     "Ignore COMPILE_DEFINITIONS_<Config> properties.",
     3,0,0,0, cmPolicies::WARN);
+
+  this->DefinePolicy(
+    CMP0044, "CMP0044",
+    "Case sensitive <LANG>_COMPILER_ID generator expressions.",
+    3,0,0,0, cmPolicies::WARN);
 }
 
 cmPolicies::~cmPolicies()
diff --git a/Source/cmPolicies.h b/Source/cmPolicies.h
index 3c8200f..0d7327f 100644
--- a/Source/cmPolicies.h
+++ b/Source/cmPolicies.h
@@ -97,6 +97,7 @@ public:
     CMP0041, ///< Error on relative include with generator expression
     CMP0042, ///< Enable MACOSX_RPATH by default
     CMP0043, ///< Ignore COMPILE_DEFINITIONS_<Config> properties
+    CMP0044, ///< Case sensitive <LANG>_COMPILER_ID generator expressions
 
     /** \brief Always the last entry.
      *