Added verilog file for the "fake diode" cell used by openlane in sky130_fd_sc_hd.
diff --git a/scripts/configure b/scripts/configure
index 4c9eda5..41644f1 100755
--- a/scripts/configure
+++ b/scripts/configure
@@ -1877,7 +1877,7 @@
                 elif test "$enableval" == "no" -o "$enableval" == "NO"; then
                     echo "Disabling sky130..."
                 else
-                    export SKY130_SOURCE_PATH=$enableval
+                    SKY130_SOURCE_PATH=$enableval
                 fi
 
 else
@@ -1888,14 +1888,9 @@
 fi
 
 	    # # Require this argument
-        # AC_MSG_NOTICE([Checking whether source path is specified for 'pdk'])
-        # if test "x$[]pdkvar[]_SOURCE_PATH" == "x" ; then
-        #     AC_MSG_ERROR([Option --with-pdk-source=<path> not specified!])
-        # fi
 
         if [ "$SKY130_SOURCE_PATH" != "" ]; then
             SKY130_SOURCE_PATH=`readlink -f $SKY130_SOURCE_PATH`
-
             # basic check that the PDK exists there (the path must exist in any case)
             { $as_echo "$as_me:${as_lineno-$LINENO}: Checking specified path for 'sky130' at $SKY130_SOURCE_PATH" >&5
 $as_echo "$as_me: Checking specified path for 'sky130' at $SKY130_SOURCE_PATH" >&6;}
@@ -2516,7 +2511,7 @@
   $as_echo_n "(cached) " >&6
 else
 
-	for am_cv_pathless_PYTHON in python python2 python3  python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3  python3.2 python3.1 python3.0  python2.7 python2.6 python2.5 python2.4 python2.3 python2.2 python2.1  python2.0 none; do
+	for am_cv_pathless_PYTHON in python python2 python3 python3.3 python3.2 python3.1 python3.0 python2.7  python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 python2.0 none; do
 	  test "$am_cv_pathless_PYTHON" = none && break
 	  prog="import sys
 # split strings by '.' and convert to numeric.  Append some zeros
@@ -2739,33 +2734,28 @@
 
     if test -z $PYTHON;
     then
-        if test -z "";
-        then
-            PYTHON="python3"
-        else
-            PYTHON=""
-        fi
+        PYTHON="python"
     fi
     PYTHON_NAME=`basename $PYTHON`
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking $PYTHON_NAME module: distutils" >&5
 $as_echo_n "checking $PYTHON_NAME module: distutils... " >&6; }
-    $PYTHON -c "import distutils" 2>/dev/null
-    if test $? -eq 0;
-    then
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+	$PYTHON -c "import distutils" 2>/dev/null
+	if test $? -eq 0;
+	then
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
-        eval HAVE_PYMOD_DISTUTILS=yes
-    else
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+		eval HAVE_PYMOD_DISTUTILS=yes
+	else
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
-        eval HAVE_PYMOD_DISTUTILS=no
-        #
-        if test -n ""
-        then
-            as_fn_error $? "failed to find required module distutils" "$LINENO" 5
-            exit 1
-        fi
-    fi
+		eval HAVE_PYMOD_DISTUTILS=no
+		#
+		if test -n ""
+		then
+			as_fn_error $? "failed to find required module distutils" "$LINENO" 5
+			exit 1
+		fi
+	fi
 
 
 # Check for "--with-ef-style"