From patchwork Wed Nov 14 16:21:57 2012
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Subject: PR other/55291: Add support for GCC multilib run-time libraries to
 libsanitizer
Date: Wed, 14 Nov 2012 06:21:57 -0000
From: "H.J. Lu" <hjl.tools@gmail.com>
X-Patchwork-Id: 198953
Message-Id: <CAMe9rOqvss--W25YGP0MPiLn9kxh2jm-jdgTOonZM9sA8K1Z4Q@mail.gmail.com>
To: Paolo Bonzini <bonzini@gnu.org>
Cc: 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

On Tue, Nov 13, 2012 at 3:48 PM, Paolo Bonzini <bonzini@gnu.org> wrote:
> Il 14/11/2012 00:43, H.J. Lu ha scritto:
>> This works.
>
> Ok, then please test remove install-sh and friends and do
> autoconf/automake again.  If it works, commit the result (I don't care
> if you make it one or two commits).
>
> Then, wait 24 hours for breakages and commit the multilib patch.
>
> Paolo

This is the multilib patch I will commit later.


diff --git a/libsanitizer/configure.ac b/libsanitizer/configure.ac
index 0b6cdef..27a7f95 100644
--- a/libsanitizer/configure.ac
+++ b/libsanitizer/configure.ac
@@ -4,7 +4,56 @@
 AC_PREREQ([2.64])
 AC_INIT(package-unused, version-unused, libsanitizer)
 AC_CONFIG_SRCDIR([include/sanitizer/common_interface_defs.h])
+
+AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
+AC_ARG_ENABLE(version-specific-runtime-libs,
+[  --enable-version-specific-runtime-libs    Specify that runtime
libraries should be installed in a compiler-specific directory ],
+[case "$enableval" in
+ yes) version_specific_libs=yes ;;
+ no)  version_specific_libs=no ;;
+ *)   AC_MSG_ERROR([Unknown argument to enable/disable
version-specific libs]);;
+ esac],
+[version_specific_libs=no])
+AC_MSG_RESULT($version_specific_libs)
+
+# Do not delete or change the following two lines.  For why, see
+# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
+AC_CANONICAL_SYSTEM
+target_alias=${target_alias-$host_alias}
+AC_SUBST(target_alias)
+
 AM_INIT_AUTOMAKE(foreign)
+AM_ENABLE_MULTILIB(, ..)
+
+# Calculate toolexeclibdir
+# Also toolexecdir, though it's only used in toolexeclibdir
+case ${version_specific_libs} in
+  yes)
+    # Need the gcc compiler version to know where to install libraries
+    # and header files if --enable-version-specific-runtime-libs option
+    # is selected.
+    toolexecdir='$(libdir)/gcc/$(target_alias)'
+    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
+    ;;
+  no)
+    if test -n "$with_cross_host" &&
+       test x"$with_cross_host" != x"no"; then
+      # Install a library built with a cross compiler in tooldir, not libdir.
+      toolexecdir='$(exec_prefix)/$(target_alias)'
+      toolexeclibdir='$(toolexecdir)/lib'
+    else
+      toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
+      toolexeclibdir='$(libdir)'
+    fi
+    multi_os_directory=`$CC -print-multi-os-directory`
+    case $multi_os_directory in
+      .) ;; # Avoid trailing /.
+      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
+    esac
+    ;;
+esac
+AC_SUBST(toolexecdir)
+AC_SUBST(toolexeclibdir)