From patchwork Thu Nov 15 16:28:55 2012
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Subject: PR other/55291: Add support for GCC multilib run-time libraries to
 libsanitizer
From: "H.J. Lu" <hjl.tools@gmail.com>
X-Patchwork-Id: 199342
Message-Id: <CAMe9rOqEzw55Ygoa5hb_b+_WejuaFwKXEwV66rOtJYT3MO__jA@mail.gmail.com>
To: Paolo Bonzini <bonzini@gnu.org>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>,
 Jakub Jelinek <jakub@redhat.com>, Alexandre Oliva <aoliva@redhat.com>,
 Dodji Seketeli <dseketel@redhat.com>, DJ Delorie <dj@redhat.com>,
 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>, gcc-patches@gcc.gnu.org
Date: Thu, 15 Nov 2012 08:28:55 -0800

On Thu, Nov 15, 2012 at 8:08 AM, Paolo Bonzini <bonzini@gnu.org> wrote:
> Il 15/11/2012 17:02, H.J. Lu ha scritto:
>>>> >> I can reproduce it with --enable-version-specific-runtime-libs.  I am
>>>> >> taking a look.
>>>> >>
>>> >
>>> > I am checking in this patch.
>>> >
>> This is what I checked in.
>
> libssp et al. do not need any of this stuff.
>
> What's special about libsanitizer?
>
> Paolo

Did you mean the

it since they build libraries in subdirectories.  From
libstdc++-v3/configure.ac:

# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
# that multilib installs will end up installed in the correct place.
# The testsuite needs it for multilib-aware ABI baseline files.
# To work around this not being passed down from config-ml.in ->
# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
# append it here.  Only modify Makefiles that have just been created.
#


diff --git a/libsanitizer/configure.ac b/libsanitizer/configure.ac
index 27a7f95..76a19b6 100644
--- a/libsanitizer/configure.ac
+++ b/libsanitizer/configure.ac
@@ -82,6 +82,9 @@ _EOF
    mv tmp$$ $ac_file
    rm vpsed$$
    echo 'MULTISUBDIR =' >> $ac_file
+   ml_norecursion=yes
+   . ${multi_basedir}/config-ml.in
+   AS_UNSET([ml_norecursion])
 ])

part?  libstdc++ and libsanitizer are only libraries which need