[llvm-objdump][NFC] Declare command-line externs in headers with namespace
Summary:
This patch moves the forward declarations of command-line `cl::*`
externs in `MachODump.cpp` and `llvm-objdump.cpp` into the headers
corresponding to the file that defines the variable. At the same time,
these externs are moved into the `llvm::objdump` namespace. The externs
that are not referenced outside their defining translation unit are made
static.
This does not factor out uses of the Mach-O options from
`llvm-objdump.cpp`.
Reviewers: jhenderson, MaskRay, DiggerLin, jasonliu, daltenty
Reviewed By: jhenderson, MaskRay
Subscribers: rupprecht, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D77388
diff --git a/llvm/tools/llvm-objdump/MachODump.h b/llvm/tools/llvm-objdump/MachODump.h
new file mode 100644
index 0000000..252b0f4
--- /dev/null
+++ b/llvm/tools/llvm-objdump/MachODump.h
@@ -0,0 +1,37 @@
+//===-- MachODump.h ---------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_OBJDUMP_MACHODUMP_H
+#define LLVM_TOOLS_LLVM_OBJDUMP_MACHODUMP_H
+
+#include "llvm/Support/CommandLine.h"
+
+namespace llvm {
+namespace objdump {
+
+// MachO specific options
+extern cl::OptionCategory MachOCat;
+extern cl::opt<bool> Bind;
+extern cl::opt<bool> DataInCode;
+extern cl::opt<bool> DylibsUsed;
+extern cl::opt<bool> DylibId;
+extern cl::opt<bool> ExportsTrie;
+extern cl::opt<bool> FirstPrivateHeader;
+extern cl::opt<bool> IndirectSymbols;
+extern cl::opt<bool> InfoPlist;
+extern cl::opt<bool> LazyBind;
+extern cl::opt<bool> LinkOptHints;
+extern cl::opt<bool> ObjcMetaData;
+extern cl::opt<bool> Rebase;
+extern cl::opt<bool> UniversalHeaders;
+extern cl::opt<bool> WeakBind;
+
+} // namespace objdump
+} // namespace llvm
+
+#endif