diff -r 21a25b29ebeb -r da791f11e20c configure
--- a/configure	Thu Mar 02 22:58:34 2017 +0100
+++ b/configure	Thu Mar 02 23:01:12 2017 +0100
@@ -170,7 +170,6 @@
             LUA_SUFFIX="5.1";
             LUA_SUFFIX_SET=yes
          fi
-         RUNWITH="lua$LUA_SUFFIX"
          LUA_INCDIR="/usr/include/lua$LUA_SUFFIX"
          LUA_INCDIR_SET=yes
          CFLAGS="$CFLAGS -ggdb"
@@ -207,7 +206,6 @@
          LUA_INCDIR_SET="yes"
       fi
       if [ "$OSTYPE" = "netbsd" ]; then
-         RUNWITH="lua5.1"
          LUA_INCDIR="/usr/pkg/include/lua-5.1"
          LUA_INCDIR_SET=yes
          LUA_LIBDIR="/usr/pkg/lib/lua/5.1"
@@ -308,6 +306,7 @@
       ;;
    --runwith)
       RUNWITH="$value"
+      RUNWITH_SET=yes
       ;;
     --no-example-certs)
       EXCERTS=
@@ -528,6 +527,10 @@
    rm -f config.unix
 fi
 
+if [ "$RUNWITH_SET" != yes ]; then
+   RUNWITH="lua$LUA_SUFFIX"
+fi
+
 OPENSSL_LIBS="-l$OPENSSL_LIB"
 
 if [ "$PRNG" = "OPENSSL" ]; then