Merge changes from github.
Change: 147897309
diff --git a/configure b/configure
index 4f1dc2a..5a9a7c0 100755
--- a/configure
+++ b/configure
@@ -418,7 +418,12 @@
   fi
 
   if is_linux; then
-    CUDNN_PATH_FROM_LDCONFIG="$(ldconfig -p | sed -n 's/.*libcudnn.so .* => \(.*\)/\1/p')"
+    if ! type ldconfig > /dev/null 2>&1; then
+        LDCONFIG_BIN=/sbin/ldconfig
+    else
+        LDCONFIG_BIN=ldconfig
+    fi
+    CUDNN_PATH_FROM_LDCONFIG="$($LDCONFIG_BIN -p | sed -n 's/.*libcudnn.so .* => \(.*\)/\1/p')"
     if [ -e "${CUDNN_PATH_FROM_LDCONFIG}${TF_CUDNN_EXT}" ]; then
       export TF_CUDNN_VERSION
       export CUDNN_INSTALL_PATH="$(dirname ${CUDNN_PATH_FROM_LDCONFIG})"