From 6014faec2a566b427a43132182667e789933e26d Mon Sep 17 00:00:00 2001
From: Rui Ueyama <ruiu@cs.stanford.edu>
Date: Mon, 10 May 2021 16:53:14 +0900
Subject: [PATCH] Add -V option

---
 cmdline.cc      | 6 ++++++
 test/version.sh | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/cmdline.cc b/cmdline.cc
index 086b08f0..3b7a6dd5 100644
--- a/cmdline.cc
+++ b/cmdline.cc
@@ -365,6 +365,12 @@ void parse_nonpositional_args(Context<E> &ctx,
       exit(0);
     }
 
+    if (read_flag(args, "V")) {
+      SyncOut(ctx) << "mold " GIT_HASH " (compatible with GNU ld)\n"
+                   << "  Supported emulations:\n   elf_x86_64\n   elf_i386";
+      exit(0);
+    }
+
     if (read_flag(args, "help")) {
       SyncOut(ctx) << "Usage: " << ctx.cmdline_args[0]
                    << " [options] file...\n\n"
diff --git a/test/version.sh b/test/version.sh
index ecbd50ca..330de9b5 100755
--- a/test/version.sh
+++ b/test/version.sh
@@ -8,4 +8,8 @@ mkdir -p $t
 ../mold -v | grep -Pq 'mold .*\(compatible with GNU ld\)'
 ../mold --version | grep -Pq 'mold .*\(compatible with GNU ld\)'
 
+../mold -V | grep -Pq 'mold .*\(compatible with GNU ld\)'
+../mold -V | grep -q elf_x86_64
+../mold -V | grep -q elf_i386
+
 echo OK