LLVMC can be now compiled w/o dynamic plugin support.

Controlled via the --enable-llvmc-dynamic-plugins option.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74784 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CompilerDriver/BuiltinOptions.cpp b/lib/CompilerDriver/BuiltinOptions.cpp
index c8b7682..a3364e8 100644
--- a/lib/CompilerDriver/BuiltinOptions.cpp
+++ b/lib/CompilerDriver/BuiltinOptions.cpp
@@ -12,7 +12,10 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/CompilerDriver/BuiltinOptions.h"
+
+#ifdef ENABLE_LLVMC_DYNAMIC_PLUGINS
 #include "llvm/Support/PluginLoader.h"
+#endif
 
 namespace cl = llvm::cl;