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0a264f3928
pass in the -target-sdk-version to the compiler and backend This commit adds support for reading the SDKSettings.json file in the Darwin driver. This file is used by the driver to determine the SDK's version, and it uses that information to pass it down to the compiler using the new -target-sdk-version= option. This option is then used to set the appropriate SDK Version module metadata introduced in r349119. Note: I had to adjust the two ast tests as the SDKROOT environment variable on macOS caused SDK version to be picked up for the compilation of source file but not the AST. rdar://45774000 Differential Revision: https://reviews.llvm.org/D55673 llvm-svn: 349380
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
//===--- DarwinSDKInfo.cpp - SDK Information parser for darwin - ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Driver/DarwinSDKInfo.h"
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#include "llvm/Support/ErrorOr.h"
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#include "llvm/Support/JSON.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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using namespace clang::driver;
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using namespace clang;
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Expected<Optional<DarwinSDKInfo>>
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driver::parseDarwinSDKInfo(llvm::vfs::FileSystem &VFS, StringRef SDKRootPath) {
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llvm::SmallString<256> Filepath = SDKRootPath;
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llvm::sys::path::append(Filepath, "SDKSettings.json");
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llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
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VFS.getBufferForFile(Filepath);
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if (!File) {
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// If the file couldn't be read, assume it just doesn't exist.
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return None;
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}
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Expected<llvm::json::Value> Result =
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llvm::json::parse(File.get()->getBuffer());
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if (!Result)
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return Result.takeError();
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if (const auto *Obj = Result->getAsObject()) {
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auto VersionString = Obj->getString("Version");
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if (VersionString) {
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VersionTuple Version;
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if (!Version.tryParse(*VersionString))
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return DarwinSDKInfo(Version);
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}
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}
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return llvm::make_error<llvm::StringError>("invalid SDKSettings.json",
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llvm::inconvertibleErrorCode());
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}
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