[PATCH] D31208: Print out "suppoted targets" and "supported emulations".

[Rui Ueyama via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL298568: Print out "suppoted targets". (authored by ruiu).

Changed prior to commit:
  https://reviews.llvm.org/D31208?vs=92716&id=92750#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D31208

Files:
  lld/trunk/ELF/DriverUtils.cpp
  lld/trunk/test/ELF/driver.test


Index: lld/trunk/test/ELF/driver.test
===================================================================
--- lld/trunk/test/ELF/driver.test
+++ lld/trunk/test/ELF/driver.test
@@ -15,6 +15,7 @@
 
 # RUN: ld.lld --help 2>&1 | FileCheck -check-prefix=HELP %s
 # HELP: USAGE:
+# HELP: ld.lld: supported targets: {{.*}} elf
 
 # RUN: ld.lld --version 2>&1 | FileCheck -check-prefix=VERSION %s
 # VERSION: LLD {{.*}} (compatible with GNU linkers)
Index: lld/trunk/ELF/DriverUtils.cpp
===================================================================
--- lld/trunk/ELF/DriverUtils.cpp
+++ lld/trunk/ELF/DriverUtils.cpp
@@ -119,6 +119,19 @@
 void elf::printHelp(const char *Argv0) {
   ELFOptTable Table;
   Table.PrintHelp(outs(), Argv0, "lld", false);
+  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() << Argv0 << ": supported targets: "
+         << "elf32-i386 elf32-iamcu elf32-littlearm elf32-powerpc "
+         << "elf32-tradbigmips elf32-tradlittlemips elf32-x86-64 "
+         << "elf64-amdgpu elf64-littleaarch64 elf64-powerpc "
+         << "elf64-tradbigmips elf64-tradlittlemips elf64-x86-64\n";
 }
 
 // Reconstructs command line arguments so that so that you can re-run


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