Only introduce the SDKSettings.plist dependency in modules/PCH files that don't depen...

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177542 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Serialization/ASTWriter.cpp b/lib/Serialization/ASTWriter.cpp
index 08e8afdd0ab865ed5e5aeb83f11f4f9cd7507761..de5e6e0275d147a58d8883027c2ccf3437d9bce7 100644 (file)
--- a/lib/Serialization/ASTWriter.cpp
+++ b/lib/Serialization/ASTWriter.cpp
@@ -1277,7 +1277,7 @@ void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
   // 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)) {