diff --git a/makedeb b/makedeb
index 684c62e..69a5d16 100755
--- a/makedeb
+++ b/makedeb
@@ -13,6 +13,7 @@ _ARGLIST=("$@")
 OVERRIDE_SOURCE=0
 QUIET=0
 PACKAGELIST=0
+IS_DYNAMICV_PKGVER=0
 
 _STEP_CLEAN=1
 _STEP_RETRIEVE_SOURCE=1
@@ -436,15 +437,16 @@ function enable_stdout {
 
 function show_help {
     echo "$0 [OPTIONS]"
-    echo "      -Q              quiet, disable log"
-    echo "      -f|--force      don't check if package already exists, will"
-    echo "      --nobuild       retrieve source, update pkgver and stop"
-    echo "                      override the existed package"
-    echo "      --noextract     use the current srcdir to build package, skip"
-    echo "                      those retrieve source steps"
-    echo "      --noarchive     retrieve and build, but don't package to .deb"
-    echo "      --packagelist   show file to be generated by current DEBBUILD"
-    echo "      -h|--help       show this message"
+    echo "      -Q                      quiet, disable log"
+    echo "      -f|--force              don't check if package already exists, will"
+    echo "      --nobuild               retrieve source, update pkgver and stop"
+    echo "                              override the existed package"
+    echo "      --noextract             use the current srcdir to build package, skip"
+    echo "                              those retrieve source steps"
+    echo "      --noarchive             retrieve and build, but don't package to .deb"
+    echo "      --packagelist           show file to be generated by current DEBBUILD"
+    echo "      --is-dynamic-pkgver     exit with 0 if DEBBUILD will update pkgver later"
+    echo "      -h|--help               show this message"
 }
 
 ##
@@ -476,9 +478,8 @@ while (( "$#" >= 1 )); do
 
             _STOP_AFTER_BUILD=1
             ;;
-        --packagelist)
-            PACKAGELIST=1
-            ;;
+        --packagelist)              PACKAGELIST=1 ;;
+        --is-dynamic-pkgver)        IS_DYNAMICV_PKGVER=1 ;;
         -h|--help) show_help ; exit 0;;
 
         *)  err "Unkown option $1"
@@ -496,6 +497,14 @@ if (( PACKAGELIST )) ; then
     exit 0
 fi
 
+if (( IS_DYNAMICV_PKGVER )) ; then
+    if is_function pkgver ; then
+        exit 0
+    else
+        exit 4
+    fi
+fi
+
 if (( QUIET )) ; then
     disable_stdout
 fi