[llvm] r337084 - Give llvm-lib rudimentary help output.

[Nico Weber via llvm-commits]

Author: nico
Date: Fri Jul 13 19:29:44 2018
New Revision: 337084

URL: http://llvm.org/viewvc/llvm-project?rev=337084&view=rev
Log:
Give llvm-lib rudimentary help output.

https://reviews.llvm.org/D49318

Added:
    llvm/trunk/test/tools/llvm-lib/help.test
Modified:
    llvm/trunk/lib/ToolDrivers/llvm-lib/LibDriver.cpp
    llvm/trunk/lib/ToolDrivers/llvm-lib/Options.td

Modified: llvm/trunk/lib/ToolDrivers/llvm-lib/LibDriver.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/ToolDrivers/llvm-lib/LibDriver.cpp?rev=337084&r1=337083&r2=337084&view=diff
==============================================================================
--- llvm/trunk/lib/ToolDrivers/llvm-lib/LibDriver.cpp (original)
+++ llvm/trunk/lib/ToolDrivers/llvm-lib/LibDriver.cpp Fri Jul 13 19:29:44 2018
@@ -121,6 +121,12 @@ int llvm::libDriverMain(ArrayRef<const c
   for (auto *Arg : Args.filtered(OPT_UNKNOWN))
     llvm::errs() << "ignoring unknown argument: " << Arg->getSpelling() << "\n";
 
+  // Handle /help
+  if (Args.hasArg(OPT_help)) {
+    Table.PrintHelp(outs(), ArgsArr[0], "LLVM Lib");
+    return 0;
+  }
+
   // If no input files, silently do nothing to match lib.exe.
   if (!Args.hasArgNoClaim(OPT_INPUT))
     return 0;

Modified: llvm/trunk/lib/ToolDrivers/llvm-lib/Options.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/ToolDrivers/llvm-lib/Options.td?rev=337084&r1=337083&r2=337084&view=diff
==============================================================================
--- llvm/trunk/lib/ToolDrivers/llvm-lib/Options.td (original)
+++ llvm/trunk/lib/ToolDrivers/llvm-lib/Options.td Fri Jul 13 19:29:44 2018
@@ -12,7 +12,11 @@ class P<string name, string help> :
 def libpath: P<"libpath", "Object file search path">;
 def out    : P<"out", "Path to file to write output">;
 
-def llvmlibthin : F<"llvmlibthin">;
+def llvmlibthin : F<"llvmlibthin">,
+    HelpText<"Make .lib point to .obj files instead of copying their contents">;
+
+def help : F<"help">;
+def help_q : Flag<["/?", "-?"], "">, Alias<help>;
 
 //==============================================================================
 // The flags below do nothing. They are defined only for lib.exe compatibility.

Added: llvm/trunk/test/tools/llvm-lib/help.test
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-lib/help.test?rev=337084&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-lib/help.test (added)
+++ llvm/trunk/test/tools/llvm-lib/help.test Fri Jul 13 19:29:44 2018
@@ -0,0 +1,3 @@
+# RUN: llvm-lib /? | FileCheck %s
+
+CHECK: OVERVIEW: LLVM Lib