From c9be4734d68954b226aab349a08cdd89053f095a Mon Sep 17 00:00:00 2001 From: Douglas Gregor Date: Fri, 12 Apr 2013 00:18:53 +0000 Subject: Include SDK version information in the module hash. This is a Darwin-SDK-specific hash criteria used to identify a particular SDK without having to hash the contents of all of its headers. If other platforms have such versioned files, we should add those checks here. llvm-svn: 179346 --- clang/lib/Frontend/CompilerInvocation.cpp | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'clang/lib/Frontend/CompilerInvocation.cpp') diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp index 42774f3..c8ccffa 100644 --- a/clang/lib/Frontend/CompilerInvocation.cpp +++ b/clang/lib/Frontend/CompilerInvocation.cpp @@ -29,6 +29,7 @@ #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/Host.h" #include "llvm/Support/Path.h" +#include "llvm/Support/system_error.h" using namespace clang; //===----------------------------------------------------------------------===// @@ -1696,5 +1697,21 @@ std::string CompilerInvocation::getModuleHash() const { hsOpts.UseStandardCXXIncludes, hsOpts.UseLibcxx); + // Darwin-specific hack: if we have a sysroot, use the contents of + // $sysroot/System/Library/CoreServices/SystemVersion.plist + // as part of the module hash. + if (!hsOpts.Sysroot.empty()) { + llvm::OwningPtr buffer; + SmallString<128> systemVersionFile; + systemVersionFile += hsOpts.Sysroot; + llvm::sys::path::append(systemVersionFile, "System"); + llvm::sys::path::append(systemVersionFile, "Library"); + llvm::sys::path::append(systemVersionFile, "CoreServices"); + llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); + if (!llvm::MemoryBuffer::getFile(systemVersionFile, buffer)) { + code = hash_combine(code, buffer.get()->getBuffer()); + } + } + return llvm::APInt(64, code).toString(36, /*Signed=*/false); } -- cgit v1.1