Allow $CALL and $ENV in command names. Fixes #3025.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58922 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/LLVMCConfigurationEmitter.cpp b/utils/TableGen/LLVMCConfigurationEmitter.cpp
index 3425352..a68c056 100644
--- a/utils/TableGen/LLVMCConfigurationEmitter.cpp
+++ b/utils/TableGen/LLVMCConfigurationEmitter.cpp
@@ -1211,7 +1211,7 @@
     << Indent2 << "const InputLanguagesSet& InLangs,\n"
     << Indent2 << "const LanguageMap& LangMap) const\n"
     << Indent1 << "{\n"
-    << Indent2 << "const char* cmd;\n"
+    << Indent2 << "std::string cmd;\n"
     << Indent2 << "std::vector<std::string> vec;\n";
 
   // cmd_line is either a string or a 'case' construct.