r177542 - Only introduce the SDKSettings.plist dependency in modules/PCH files that don't depend on any other modules or PCH files.

[Douglas Gregor]

Author: dgregor
Date: Wed Mar 20 11:59:53 2013
New Revision: 177542

URL: http://llvm.org/viewvc/llvm-project?rev=177542&view=rev
Log:
Only introduce the SDKSettings.plist dependency in modules/PCH files that don't depend on any other modules or PCH files.

Modified:
    cfe/trunk/lib/Serialization/ASTWriter.cpp

Modified: cfe/trunk/lib/Serialization/ASTWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTWriter.cpp?rev=177542&r1=177541&r2=177542&view=diff
==============================================================================
--- cfe/trunk/lib/Serialization/ASTWriter.cpp (original)
+++ cfe/trunk/lib/Serialization/ASTWriter.cpp Wed Mar 20 11:59:53 2013
@@ -1277,7 +1277,7 @@ void ASTWriter::WriteInputFiles(SourceMa
   // detecting whether the system headers may have changed, because it is too
   // expensive to stat() all of the system headers.
   FileManager &FileMgr = SourceMgr.getFileManager();
-  if (!HSOpts.Sysroot.empty()) {
+  if (!HSOpts.Sysroot.empty() && !Chain) {
     llvm::SmallString<128> SDKSettingsFileName(HSOpts.Sysroot);
     llvm::sys::path::append(SDKSettingsFileName, "SDKSettings.plist");
     if (const FileEntry *SDKSettingsFile = FileMgr.getFile(SDKSettingsFileName)) {