From 9210fef65b6ca6b527cfdf42b91cc27fc975f73d Mon Sep 17 00:00:00 2001
From: Bill Hoffman <bill.hoffman@kitware.com>
Date: Tue, 14 Oct 2008 11:43:35 -0400
Subject: [PATCH] ENH: better error message for mis-configured nmake
 environment

---
 Source/cmEnableLanguageCommand.cxx | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Source/cmEnableLanguageCommand.cxx b/Source/cmEnableLanguageCommand.cxx
index b1e5622fe..560c833c1 100644
--- a/Source/cmEnableLanguageCommand.cxx
+++ b/Source/cmEnableLanguageCommand.cxx
@@ -25,9 +25,16 @@ bool cmEnableLanguageCommand
   if(args.size() < 1 )
     {
     this->SetError
-      ("ENABLE_LANGUAGE called with incorrect number of arguments");
+      ("called with incorrect number of arguments");
     return false;
     } 
+  if(this->Makefile->GetCMakeInstance()->GetIsInTryCompile())
+    {
+    this->SetError
+      ("called from a try_compile, "
+       "all languages must be enabled before trying them.");
+    return false;
+    }
   for (std::vector<std::string>::const_iterator it = args.begin();
        it != args.end();
        ++it)