[SCM] GNU Libtool branch, master, updated. v2.4.2-400-gd9a35fe

[Brooks Moses]

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- Log -----------------------------------------------------------------
commit d9a35fe9d3508b5c0d56e7f2ec80fc05e8415fa3
Author: Brooks Moses <address@hidden>
Date:   Wed Oct 9 12:32:48 2013 -0700

    libtool: Discard "-mllvm $arg" options when linking.
    
    Clang accepts options of the form "-mllvm $arg", and passes the
    argument as an option to LLVM.  These options caused problems
    for Libtool when linking; in some cases, the -mllvm option is
    passed through but the corresponding argument is dropped.  (See
    for example http://llvm.org/bugs/show_bug.cgi?id=14716.)
    
    This patch resolves the issue by explicitly matching -mllvm and
    taking an argument.  Since Clang never uses LLVM for linking,
    the matched "-mllvm $arg" option is irrelevant for the link
    step, and we can simply discard it once we've recognized it.
    
    Co-authored-by: Johannes Obermayr <address@hidden>
    Copyright-paperwork-exempt: Yes

-----------------------------------------------------------------------

Summary of changes:
 build-aux/ltmain.in |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
index f22ac05..363ce9b 100644
--- a/build-aux/ltmain.in
+++ b/build-aux/ltmain.in
@@ -4739,6 +4739,12 @@ func_mode_link ()
          prev=
          continue
          ;;
+       mllvm)
+         # Clang does not use LLVM to link, so we can simply discard any
+         # '-mllvm $arg' options when doing the link step.
+         prev=
+         continue
+         ;;
        objectlist)
          if test -f "$arg"; then
            save_arg=$arg
@@ -5077,6 +5083,11 @@ func_mode_link ()
        continue
        ;;
 
+      -mllvm)
+       prev=mllvm
+       continue
+       ;;
+
       -module)
        module=yes
        continue


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