Simplify libtool compatibility hack

[• espindola]

Summary

I tested that if I remove "elf" from the message, building a program that uses libtool prints

checking whether to build shared libraries... no

but with this patch it still prints

checking whether to build shared libraries... yes

[ruiu]

LGTM

ELF/DriverUtils.cpp

127

Remove this line from the comment.

[• espindola]

r324428.

[grimar]

Nice, thanks !

ELF/DriverUtils.cpp

ELFOptTable().PrintHelp(outs(), Config->ProgName.data(), "lld",
                           false /*ShowHidden*/, true /*ShowAllAliases*/);
   outs() << "\n";
 
   // Scripts generated by Libtool versions up to at least 2.4.6 (the most
   // recent version as of March 2017) expect /: supported targets:.* elf/
   // in a message for the -help option. If it doesn't match, the scripts
   // assume that the linker doesn't support very basic features such as
   // shared libraries. Therefore, we need to print out at least "elf".
   // Here, we print out all the targets that we support.
-  outs() << Config->ProgName << ": supported targets: "
-         << "elf32-i386 elf32-iamcu elf32-littlearm elf32-ntradbigmips "
-         << "elf32-ntradlittlemips elf32-powerpc elf32-tradbigmips "
-         << "elf32-tradlittlemips elf32-x86-64 "
-         << "elf64-amdgpu elf64-littleaarch64 elf64-powerpc elf64-tradbigmips "
-         << "elf64-tradlittlemips elf64-x86-64\n";
+  outs() << Config->ProgName << ": supported targets: elf\n";
 }
 
 // Reconstructs command line arguments so that so that you can re-run
 // the same command with the same inputs. This is for --reproduce.
 std::string elf::createResponseFile(const opt::InputArgList &Args) {
   SmallString<0> Data;
   raw_svector_ostream OS(Data);
   OS << "--chroot .\n";