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sets correct linker ABI flags on MIPS64
http://git.savannah.gnu.org/cgit/libtool.git/commit/?id=5f7f7d9615bf650cf99d581a33b3e18357f79951

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>

diff -ru libtool-2.4.2.orig/libltdl/m4/libtool.m4 libtool-2.4.2/libltdl/m4/libtool.m4
--- libtool-2.4.2.orig/libltdl/m4/libtool.m4	2013-11-11 11:44:30.419396295 +0000
+++ libtool-2.4.2/libltdl/m4/libtool.m4	2013-11-11 11:44:07.055032308 +0000
@@ -1312,6 +1312,38 @@
   rm -rf conftest*
   ;;
 
+mips64*-*linux*)
+  # Find out what ABI is being produced by ac_compile, and set linker
+  # options accordingly.
+  echo '[#]line '$LINENO' "configure"' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    emul=elf
+    case `/usr/bin/file conftest.$ac_objext` in
+      *32-bit*)
+      emul="${emul}32"
+      ;;
+      *64-bit*)
+      emul="${emul}64"
+      ;;
+    esac
+    case `/usr/bin/file conftest.$ac_objext` in
+      *MSB*)
+      emul="${emul}btsmip"
+      ;;
+      *LSB*)
+      emul="${emul}ltsmip"
+      ;;
+    esac
+    case `/usr/bin/file conftest.$ac_objext` in
+      *N32*)
+      emul="${emul}n32"
+      ;;
+    esac
+    LD="${LD-ld} -m $emul"
+    fi
+  rm -rf conftest*
+  ;;
+
 x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
 s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
   # Find out which ABI we are using.
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