Create empty shell of llvm-mt.

Summary:
This is the first patch towards creating the llvm-mt tool for merging
Windows manifests.  This is a reimplementation of mt.exe.

Reviewers: zturner, ruiu, rnk

Subscribers: llvm-commits, mgorny

Differential Revision: https://reviews.llvm.org/D35333

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308224 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 181 insertions, 0 deletions

diff --git a/tools/llvm-mt/CMakeLists.txt b/tools/llvm-mt/CMakeLists.txt
new file mode 100644
index 000000000000..d97cc4fe446f
--- /dev/null
+++ b/tools/llvm-mt/CMakeLists.txt
@@ -0,0 +1,13 @@
+set(LLVM_LINK_COMPONENTS
+  Option
+  Support
+  )
+
+set(LLVM_TARGET_DEFINITIONS Opts.td)
+
+tablegen(LLVM Opts.inc -gen-opt-parser-defs)
+add_public_tablegen_target(MtTableGen)
+
+add_llvm_tool(llvm-mt
+  llvm-mt.cpp
+  )
diff --git a/tools/llvm-mt/LLVMBuild.txt b/tools/llvm-mt/LLVMBuild.txt
new file mode 100644
index 000000000000..894d3527924b
--- /dev/null
+++ b/tools/llvm-mt/LLVMBuild.txt
@@ -0,0 +1,22 @@
+;===- ./tools/llvm-mt/LLVMBuild.txt ---------------------------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Tool
+name = llvm-mt
+parent = Tools
+required_libraries = Option Support
diff --git a/tools/llvm-mt/Opts.td b/tools/llvm-mt/Opts.td
new file mode 100644
index 000000000000..6dc3eea524e6
--- /dev/null
+++ b/tools/llvm-mt/Opts.td
@@ -0,0 +1,29 @@
+include "llvm/Option/OptParser.td"
+
+def unsupported : OptionGroup<"unsupported">;
+def manifest : Separate<["/", "-"], "manifest">, HelpText<"Used to specify each manifest that need to be processed">, MetaVarName<"manifest">;
+def identity : Joined<["/", "-"], "identity:">, HelpText<"Not supported">, MetaVarName<"identity">, Group<unsupported>;
+def rgs : Joined<["/", "-"], "rgs:">, HelpText<"Not supported">, MetaVarName<"script">, Group<unsupported>;
+def tlb : Joined<["/", "-"], "tlb:">, HelpText<"Not supported">, MetaVarName<"file">, Group<unsupported>;
+def dll : Joined<["/", "-"], "dll:">, HelpText<"Not supported">, MetaVarName<"dll">, Group<unsupported>;
+def replacements : Joined<["/", "-"], "replacements:">, HelpText<"Not supported">, MetaVarName<"file">, Group<unsupported>;
+def managed_assembly_name : Joined<["/", "-"], "managedassemblyname:">, HelpText<"Not supported">, MetaVarName<"assembly">, Group<unsupported>;
+def no_dependency : Flag<["/", "-"], "nodependency">, HelpText<"Not supported">, Group<unsupported>;
+def category : Flag<["/", "-"], "category">, HelpText<"Not supported">, Group<unsupported>;
+def no_logo : Flag<["/", "-"], "nologo">, HelpText<"No effect as this tool never writes copyright data.  Included for parity">;
+def out : Joined<["/", "-"], "out:">, HelpText<"Name of the output manifest.  If this is skipped and only one manifest is being operated upon by the tool, that manifest is modified in place">, MetaVarName<"manifest">;
+def input_resource : Joined<["/", "-"], "inputresource:">, HelpText<"Not supported">, MetaVarName<"file">, Group<unsupported>;
+def output_resource : Joined<["/", "-"], "outputresource:">, HelpText<"Not supported">, MetaVarName<"file">, Group<unsupported>;
+def output_resource_flag : Flag<["/", "-"], "outputresource">, Alias<output_resource>, HelpText<"Not supported">, Group<unsupported>;
+def update_resource : Joined<["/", "-"], "updateresource:">, HelpText<"Not supported">, MetaVarName<"file">, Group<unsupported>;
+def hash_update : Joined<["/", "-"], "hashupdate:">, HelpText<"Not supported">, MetaVarName<"file">, Group<unsupported>;
+def hash_update_flag : Flag<["/", "-"], "hashupdate">, Alias<hash_update>, HelpText<"Not supported">, Group<unsupported>;
+def validate_manifest : Flag<["/", "-"], "validate_manifest">, HelpText<"Not supported">, Group<unsupported>;
+def validate_file_hashes : Joined<["/", "-"], "validate_file_hashes:">, HelpText<"Not supported">, MetaVarName<"">, Group<unsupported>;
+def canonicalize : Flag<["/", "-"], "canonicalize:">, HelpText<"Not supported">, Group<unsupported>;
+def check_for_duplicates : Flag<["/", "-"], "check_for_duplicates:">, HelpText<"Not supported">, Group<unsupported>;
+def make_cdfs : Flag<["/", "-"], "makecdfs:">, HelpText<"Not supported">, Group<unsupported>;
+def verbose : Flag<["/", "-"], "verbose">, HelpText<"Not supported">, Group<unsupported>;
+def help : Flag<["/", "-"], "?">;
+def help_long : Flag<["/", "-"], "help">, Alias<help>;
+def h : Flag<["/", "-"], "h">, Alias<help>;
diff --git a/tools/llvm-mt/llvm-mt.cpp b/tools/llvm-mt/llvm-mt.cpp
new file mode 100644
index 000000000000..05c9238c7c64
--- /dev/null
+++ b/tools/llvm-mt/llvm-mt.cpp
@@ -0,0 +1,117 @@
+//===- llvm-mt.cpp - Merge .manifest files ---------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===---------------------------------------------------------------------===//
+//
+// Merge .manifest files.  This is intended to be a platform-independent port
+// of Microsoft's mt.exe.
+//
+//===---------------------------------------------------------------------===//
+
+#include "llvm/Option/Arg.h"
+#include "llvm/Option/ArgList.h"
+#include "llvm/Option/Option.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/raw_ostream.h"
+
+#include <system_error>
+
+using namespace llvm;
+
+namespace {
+
+enum ID {
+  OPT_INVALID = 0, // This is not an option ID.
+#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM,  \
+               HELPTEXT, METAVAR, VALUES)                                      \
+  OPT_##ID,
+#include "Opts.inc"
+#undef OPTION
+};
+
+#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
+#include "Opts.inc"
+#undef PREFIX
+
+static const opt::OptTable::Info InfoTable[] = {
+#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM,  \
+               HELPTEXT, METAVAR, VALUES)                                      \
+{                                                                              \
+      PREFIX,      NAME,      HELPTEXT,                                        \
+      METAVAR,     OPT_##ID,  opt::Option::KIND##Class,                        \
+      PARAM,       FLAGS,     OPT_##GROUP,                                     \
+      OPT_##ALIAS, ALIASARGS, VALUES},
+#include "Opts.inc"
+#undef OPTION
+};
+
+class CvtResOptTable : public opt::OptTable {
+public:
+  CvtResOptTable() : OptTable(InfoTable, true) {}
+};
+
+static ExitOnError ExitOnErr;
+} // namespace
+
+LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg) {
+  errs() << "llvm-mt error: " << Msg << "\n";
+  exit(1);
+}
+
+int main(int argc, const char **argv) {
+  sys::PrintStackTraceOnErrorSignal(argv[0]);
+  PrettyStackTraceProgram X(argc, argv);
+
+  ExitOnErr.setBanner("llvm-mt: ");
+
+  SmallVector<const char *, 256> argv_buf;
+  SpecificBumpPtrAllocator<char> ArgAllocator;
+  ExitOnErr(errorCodeToError(sys::Process::GetArgumentVector(
+      argv_buf, makeArrayRef(argv, argc), ArgAllocator)));
+
+  llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
+
+  CvtResOptTable T;
+  unsigned MAI, MAC;
+  ArrayRef<const char *> ArgsArr = makeArrayRef(argv + 1, argc);
+  opt::InputArgList InputArgs = T.ParseArgs(ArgsArr, MAI, MAC);
+
+  for (auto &Arg : InputArgs) {
+    if (Arg->getOption().matches(OPT_unsupported)) {
+      outs() << "llvm-mt: ignoring unsupported '" << Arg->getOption().getName()
+             << "' option\n";
+    }
+  }
+
+  if (InputArgs.hasArg(OPT_help)) {
+    T.PrintHelp(outs(), "mt", "Manifest Tool", false);
+    return 0;
+  }
+
+  std::vector<std::string> InputFiles = InputArgs.getAllArgValues(OPT_manifest);
+
+  if (InputFiles.size() == 0) {
+    reportError("no input file specified");
+  }
+
+  StringRef OutputFile;
+
+  if (InputArgs.hasArg(OPT_out)) {
+    OutputFile = InputArgs.getLastArgValue(OPT_out);
+  } else if (InputFiles.size() == 1) {
+    OutputFile = InputFiles[0];
+  } else {
+    reportError("no output file specified");
+  }
+
+  return 0;
+}