diff --git a/build_library/base_image_util.sh b/build_library/base_image_util.sh
index 1a5317a..81c0963 100755
--- a/build_library/base_image_util.sh
+++ b/build_library/base_image_util.sh
@@ -100,6 +100,14 @@
     'usr/include' 'sys-include'
     # Link-time objects.
     '*.[ao]'
+    # Debug commands not used by normal runtime code.
+    'usr/bin/'{getent,ldd}
+    # LD_PRELOAD objects for debugging.
+    'lib*/lib'{memusage,pcprofile,SegFault}.so 'usr/lib*/audit'
+    # We only use files & dns with nsswitch, so throw away the others.
+    'lib*/libnss_'{compat,db,hesiod,nis,nisplus}'*.so*'
+    # This is only for very old packages which we don't have.
+    'lib*/libBrokenLocale*.so*'
   )
   pbzip2 -dc --ignore-trailing-garbage=1 "${LIBC_PATH}" | \
     sudo tar xpf - -C "${root_fs_dir}" ./usr/${CHOST} \
diff --git a/build_library/dev_image_util.sh b/build_library/dev_image_util.sh
index 2d13636..59a1219 100755
--- a/build_library/dev_image_util.sh
+++ b/build_library/dev_image_util.sh
@@ -69,12 +69,8 @@
   # Leave core files for developers to inspect.
   sudo touch "${root_fs_dir}/root/.leave_core"
 
-  # This hack is only needed for devs who have old versions of glibc, which
-  # filtered out ldd when cross-compiling.  TODO(davidjames): Remove this hack
-  # once everybody has upgraded to a new version of glibc.
-  if [[ ! -x "${root_fs_dir}/usr/bin/ldd" ]]; then
-    sudo cp -a "$(which ldd)" "${root_fs_dir}/usr/bin"
-  fi
+  # Release images do not include these, so install it for dev images.
+  sudo cp -a "${BOARD_ROOT}"/usr/bin/{getent,ldd} "${root_fs_dir}/usr/bin/"
 
   # If vim is installed, then a vi symlink would probably help.
   if [[ -x "${root_fs_dir}/usr/local/bin/vim" ]]; then