Merge branch 'embed-lld'

Zig now depends on LLVM 5.0.0.

For the latest version that supports LLVM 4.0.1, use
2a49c876be76dc98996a3251310728ad32b22363.

Unfortunately we had to embed LLD into Zig due to some
MACH-O related LLD bugs. One of them is already upstream
and another is awaiting feedback on the llvm-dev mailing
list.

You can use cmake option -DZIG_FORCE_EXTERNAL_LLD=ON to
still use external LLD if you want to live with the MACH-O
bugs or if your system LLD is patched.

Closes #273

1 files changed, 29 insertions, 0 deletions

diff --git a/deps/lld/lib/Core/File.cpp b/deps/lld/lib/Core/File.cpp
new file mode 100644
index 0000000000..30ded091a9
--- /dev/null
+++ b/deps/lld/lib/Core/File.cpp
@@ -0,0 +1,29 @@
+//===- Core/File.cpp - A Container of Atoms -------------------------------===//
+//
+//                             The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lld/Core/File.h"
+#include <mutex>
+
+namespace lld {
+
+File::~File() = default;
+
+File::AtomVector<DefinedAtom> File::_noDefinedAtoms;
+File::AtomVector<UndefinedAtom> File::_noUndefinedAtoms;
+File::AtomVector<SharedLibraryAtom> File::_noSharedLibraryAtoms;
+File::AtomVector<AbsoluteAtom> File::_noAbsoluteAtoms;
+
+std::error_code File::parse() {
+  std::lock_guard<std::mutex> lock(_parseMutex);
+  if (!_lastError.hasValue())
+    _lastError = doParse();
+  return _lastError.getValue();
+}
+
+} // end namespace lld