From bbff2b69459a370afd6c74b6b0d3bb080ff22b89 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 14 Mar 2016 13:30:47 +0200
Subject: Add support for guessing ar/ranlib signatures

---
 build2/cxx/link.cxx | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'build2/cxx/link.cxx')

diff --git a/build2/cxx/link.cxx b/build2/cxx/link.cxx
index 0002797..f9fa69d 100644
--- a/build2/cxx/link.cxx
+++ b/build2/cxx/link.cxx
@@ -827,8 +827,10 @@ namespace build2
       if (lt == type::a)
       {
         // If the user asked for ranlib, don't try to do its function with -s.
+        // Some ar implementations (e.g., the LLVM one) doesn't support
+        // leading '-'.
         //
-        args.push_back (ranlib ? "-rc" : "-rcs");
+        args.push_back (ranlib ? "rc" : "rcs");
       }
       else
       {
@@ -1048,6 +1050,9 @@ namespace build2
         const char* args[] = {
           as<string> (*ranlib).c_str (), relt.string ().c_str (), nullptr};
 
+        if (verb >= 2)
+          print_process (args);
+
         try
         {
           process pr (args);
-- 
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