file-5.14 on Ubuntu 14.04 identifies shared objects as:

address@hidden:~/work/ltib$ file --version
file-5.14
magic file from /etc/magic:/usr/share/misc/magic
address@hidden:~/work/ltib$ file rootfs/lib/libc-2.8.so
rootfs/lib/libc-2.8.so: ELF 32-bit LSB  shared object, ARM, EABI5 version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.14, not stripped

Note the double space in "LSB  shared object".

file-5.11 on Ubuntu 13.10 identifies shared objecfts as:


address@hidden:~/work/ltib$ file --version
file-5.11
magic file from /etc/magic:/usr/share/misc/magic
address@hidden:~/work/ltib$ file rootfs/lib/libc-2.8.so
rootfs/lib/libc-2.8.so: ELF 32-bit LSB  shared object, ARM, EABI5 version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.14, not stripped

Not the single space(s) in "LSB shared obhect".

To fix this, modifiy the Libtool lt_cv_deplibs_check_method in the
linux clause to check for multiple spaces between the significant bit
designator and the shared object/dynamic lib strings.

--- libtool-1.5/acinclude.m4	2003-04-14 18:29:13.000000000 -0400
+++ libtool-1.5.modified/acinclude.m4	2014-07-16 09:48:09.483572663 -0400
@@ -2171,7 +2171,7 @@
     lt_cv_deplibs_check_method=pass_all ;;
   *)
     # glibc up to 2.1.1 does not perform some relocations on ARM
-    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )' ;;
+    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB[ ]+(shared object|dynamic lib )' ;;
   esac
   lt_cv_file_magic_test_file=`echo /lib/libc.so* /lib/libc-*.so`
   ;;
diff --exclude CVS --exclude .git -uNr libtool-1.5/libtool.m4 libtool-1.5.modified/libtool.m4
--- libtool-1.5/libtool.m4	2003-04-14 17:58:23.000000000 -0400
+++ libtool-1.5.modified/libtool.m4	2014-07-07 15:07:06.679038898 -0400
@@ -2171,7 +2171,7 @@
     lt_cv_deplibs_check_method=pass_all ;;
   *)
     # glibc up to 2.1.1 does not perform some relocations on ARM
-    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )' ;;
+    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB[ ]+(shared object|dynamic lib )' ;;
   esac
   lt_cv_file_magic_test_file=`echo /lib/libc.so* /lib/libc-*.so`
   ;;