Only introduce the SDKSettings.plist dependency in modules/PCH files that don't depend on any other modules or PCH files.
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 08e8afd..de5e6e0 100644
--- a/lib/Serialization/ASTWriter.cpp
+++ b/lib/Serialization/ASTWriter.cpp
@@ -1277,7 +1277,7 @@
// 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)) {
