[llvm-readobj] Accept (and ignore) --wide (-W) command-line switch

Accept and ignore --wide/-W. In GNU readelf this switch is
necessary to get the output format that's consistent between
32-bit and 64-bit targets. llvm-readobj always produces that
output format.

Patch by Roland McGrath

Differential Revision: https://reviews.llvm.org/D33873

llvm-svn: 308396

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index 0a76368883a..3aa79541456 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -50,6 +50,13 @@ namespace opts {
     cl::desc("<input object files>"),
     cl::ZeroOrMore);
 
+  // -wide, -W
+  cl::opt<bool> WideOutput("wide",
+    cl::desc("Ignored for compatibility with GNU readelf"));
+  cl::alias WideOutputShort("W",
+    cl::desc("Alias for --wide"),
+    cl::aliasopt(WideOutput));
+
   // -file-headers, -h
   cl::opt<bool> FileHeaders("file-headers",
     cl::desc("Display file headers "));
@@ -544,6 +551,8 @@ int main(int argc, const char *argv[]) {
   // Register the target printer for --version.
   cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
 
+  opts::WideOutput.setHiddenFlag(cl::Hidden);
+
   cl::ParseCommandLineOptions(argc, argv, "LLVM Object Reader\n");
 
   // Default to stdin if no filename is specified.