diff --git a/scripts/configure b/scripts/configure
index 41644f1..9b9bd8d 100755
--- a/scripts/configure
+++ b/scripts/configure
@@ -587,15 +587,6 @@
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
 EF_STYLE
-pkgpyexecdir
-pyexecdir
-pkgpythondir
-pythondir
-PYTHON_PLATFORM
-PYTHON_EXEC_PREFIX
-PYTHON_PREFIX
-PYTHON_VERSION
-PYTHON
 XSCHEM_PATH
 SKY130_ML_XX_HD_PATH
 OSU_PATH
@@ -610,6 +601,15 @@
 SKY130_LOCAL_PATH
 SKY130_SOURCE_PATH
 SKY130_LINK_TARGETS
+pkgpyexecdir
+pyexecdir
+pkgpythondir
+pythondir
+PYTHON_PLATFORM
+PYTHON_EXEC_PREFIX
+PYTHON_PREFIX
+PYTHON_VERSION
+PYTHON
 target_alias
 host_alias
 build_alias
@@ -1769,706 +1769,6 @@
 
 
 
-# detect PDKs based on directories that include Makefile.in files
-
-
-# define tools
-# define tools to install setup files for.  This does not imply that the tools are
-# available on the system;  just that open_pdks will install the setup files for them.
-## DO NOT INCLUDE XSCHEM IN THE TOOL LIST. XSCHEM CAN BE INSTALLED IN THE CONFIG SCRIPT
-
-
-mkdir -p ../pdks
-
-# check for the source and install paths for each PDK.
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: Found technology directories: sky130" >&5
-$as_echo "$as_me: Found technology directories: sky130" >&6;}
-
-
-
-    # --enable-pdk-[pdk]=/path/to/pdk
-
-
-
-        SKY130_SOURCE_PATH=""
-        SKY130_LOCAL_PATH=""
-        SKY130_DIST_PATH=""
-        SKY130_LINK_TARGETS="none"
-
-        pdk_get() {
-            { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../sky130/pdk_info" >&5
-$as_echo_n "checking for ../sky130/pdk_info... " >&6; }
-if ${ac_cv_file____sky130_pdk_info+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  test "$cross_compiling" = yes &&
-  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
-if test -r "../sky130/pdk_info"; then
-  ac_cv_file____sky130_pdk_info=yes
-else
-  ac_cv_file____sky130_pdk_info=no
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____sky130_pdk_info" >&5
-$as_echo "$ac_cv_file____sky130_pdk_info" >&6; }
-if test "x$ac_cv_file____sky130_pdk_info" = xyes; then :
-
-                { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../pdks/sky130" >&5
-$as_echo_n "checking for ../pdks/sky130... " >&6; }
-if ${ac_cv_file____pdks_sky130+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  test "$cross_compiling" = yes &&
-  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
-if test -r "../pdks/sky130"; then
-  ac_cv_file____pdks_sky130=yes
-else
-  ac_cv_file____pdks_sky130=no
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____pdks_sky130" >&5
-$as_echo "$ac_cv_file____pdks_sky130" >&6; }
-if test "x$ac_cv_file____pdks_sky130" = xyes; then :
-
-                    echo "Using pre-existing sky130 download..."
-
-else
-
-                    REPO=$(cat "../sky130/pdk_info" | sed -n "1p")
-                    POST_CLONE_COMMANDS=$(cat "../sky130/pdk_info" | sed "1d")
-                    mkdir -p ../pdks
-                    git clone "$REPO" ../pdks/sky130;
-                    (cd ../pdks/sky130 && sh -c "$POST_CLONE_COMMANDS")
-
-fi
-
-                export SKY130_SOURCE_PATH=../pdks/sky130
-
-else
-
-                as_fn_error $? "PDK sky130 cannot be automatically downloaded and requires a path." "$LINENO" 5
-
-fi
-
-        }
-
-        pdk_find() {
-            FOUND=0
-            for path in /opt/pdks/sky130 /usr/share/pdks/sky130 /usr/local/share/pdks/sky130; do
-                if [ -d $path ] ; then
-                    echo "Found sky130 in $path, using this installation..."
-                    export SKY130_SOURCE_PATH=$path
-                    FOUND=1
-                fi
-            done
-            if [ "$FOUND" = "sky130" ]; then
-                echo "Could not found sky130 in standard search paths, manually downloading to ../pdks/sky130 ..."
-                pdk_find
-            fi
-        }
-
-        # Check whether --enable-sky130-sky130 was given.
-if test "${enable_sky130_pdk+set}" = set; then :
-  enableval=$enable_sky130_pdk;
-                if test "$enableval" == "yes" -o "$enableval" == "YES"; then
-                   pdk_find
-                elif test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    echo "Disabling sky130..."
-                else
-                    SKY130_SOURCE_PATH=$enableval
-                fi
-
-else
-
-                pdk_find
-
-
-fi
-
-	    # # Require this argument
-
-        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 $SKY130_SOURCE_PATH" >&6;}
-            as_ac_File=`$as_echo "ac_cv_file_$SKY130_SOURCE_PATH" | $as_tr_sh`
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $SKY130_SOURCE_PATH" >&5
-$as_echo_n "checking for $SKY130_SOURCE_PATH... " >&6; }
-if eval \${$as_ac_File+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  test "$cross_compiling" = yes &&
-  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
-if test -r "$SKY130_SOURCE_PATH"; then
-  eval "$as_ac_File=yes"
-else
-  eval "$as_ac_File=no"
-fi
-fi
-eval ac_res=\$$as_ac_File
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
-if eval test \"x\$"$as_ac_File"\" = x"yes"; then :
-
-                { $as_echo "$as_me:${as_lineno-$LINENO}: 'sky130' source path found at $SKY130_SOURCE_PATH" >&5
-$as_echo "$as_me: 'sky130' source path found at $SKY130_SOURCE_PATH" >&6;}
-
-else
-
-                as_fn_error $? "Specified path for 'sky130' at $SKY130_SOURCE_PATH not found" "$LINENO" 5
-
-fi
-
-
-            # --with-pdk-local-path=PDK_LOCAL_PATH
-
-# Check whether --with-sky130-local-path was given.
-if test "${with_sky130_local_path+set}" = set; then :
-  withval=$with_sky130_local_path; SKY130_LOCAL_PATH=$withval
-
-fi
-
-
-            # Require this argument
-            { $as_echo "$as_me:${as_lineno-$LINENO}: Checking whether local path is specified for 'sky130'" >&5
-$as_echo "$as_me: Checking whether local path is specified for 'sky130'" >&6;}
-            if test "x$SKY130_LOCAL_PATH" == "x" ; then
-                as_fn_error $? "Option --with-sky130-local-path=<path> not specified!" "$LINENO" 5
-                SKY130_LOCAL_PATH=""
-            else
-                SKY130_LOCAL_PATH=`readlink -f $SKY130_LOCAL_PATH`
-            fi
-
-            # --with-pdk-dist-path=PDK_DIST_PATH
-
-# Check whether --with-sky130-dist-path was given.
-if test "${with_sky130_dist_path+set}" = set; then :
-  withval=$with_sky130_dist_path; SKY130_DIST_PATH=$withval
-
-fi
-
-
-
-            # "Require" this argument
-            { $as_echo "$as_me:${as_lineno-$LINENO}: Checking whether distribution path is specified for 'sky130'" >&5
-$as_echo "$as_me: Checking whether distribution path is specified for 'sky130'" >&6;}
-            if test "x$SKY130_DIST_PATH" == "x" ; then
-                { $as_echo "$as_me:${as_lineno-$LINENO}: Option --with-sky130-dist-path=<path> not specified.  Local install only." >&5
-$as_echo "$as_me: Option --with-sky130-dist-path=<path> not specified.  Local install only." >&6;}
-                SKY130_DIST_PATH=""
-            else
-                SKY130_DIST_PATH=`readlink -f $SKY130_DIST_PATH`
-            fi
-
-            # --with-pdk-link-targets=PDK_LINK_TARGETS
-
-# Check whether --with-sky130-link-targets was given.
-if test "${with_sky130_link_targets+set}" = set; then :
-  withval=$with_sky130_link_targets; SKY130_LINK_TARGETS=$with_sky130_link_targets
-
-fi
-
-
-            { $as_echo "$as_me:${as_lineno-$LINENO}: Link targets set to $SKY130_LINK_TARGETS" >&5
-$as_echo "$as_me: Link targets set to $SKY130_LINK_TARGETS" >&6;}
-        fi
-
-
-
-
-
-
-
-
-# Set variables for tool setups
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: Found tools: klayout magic netgen openlane qflow" >&5
-$as_echo "$as_me: Found tools: klayout magic netgen openlane qflow" >&6;}
-
-
-
-
-
-        KLAYOUT_DISABLED=0
-        # Check whether --enable-klayout was given.
-if test "${enable_klayout+set}" = set; then :
-  enableval=$enable_klayout;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    KLAYOUT_DISABLED=1
-                fi
-
-
-fi
-
-
-
-
-
-        MAGIC_DISABLED=0
-        # Check whether --enable-magic was given.
-if test "${enable_magic+set}" = set; then :
-  enableval=$enable_magic;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    MAGIC_DISABLED=1
-                fi
-
-
-fi
-
-
-
-
-
-        NETGEN_DISABLED=0
-        # Check whether --enable-netgen was given.
-if test "${enable_netgen+set}" = set; then :
-  enableval=$enable_netgen;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    NETGEN_DISABLED=1
-                fi
-
-
-fi
-
-
-
-
-
-        OPENLANE_DISABLED=0
-        # Check whether --enable-openlane was given.
-if test "${enable_openlane+set}" = set; then :
-  enableval=$enable_openlane;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    OPENLANE_DISABLED=1
-                fi
-
-
-fi
-
-
-
-
-
-        QFLOW_DISABLED=0
-        # Check whether --enable-qflow was given.
-if test "${enable_qflow+set}" = set; then :
-  enableval=$enable_qflow;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    QFLOW_DISABLED=1
-                fi
-
-
-fi
-
-
-
-
-
-# Magic
-# Extract the first word of "magic", so it can be a program name with args.
-set dummy magic; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_MAGIC+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $MAGIC in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_MAGIC="$MAGIC" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_MAGIC="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-MAGIC=$ac_cv_path_MAGIC
-if test -n "$MAGIC"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC" >&5
-$as_echo "$MAGIC" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-if test -z "$MAGIC"; then
-   as_fn_error $? "You need 'magic' to generate the needed various cell views." "$LINENO" 5
-fi
-# Extract the first word of "patch", so it can be a program name with args.
-set dummy patch; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_PATCH+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $PATCH in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_PATCH="$PATCH" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_PATCH="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-PATCH=$ac_cv_path_PATCH
-if test -n "$PATCH"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PATCH" >&5
-$as_echo "$PATCH" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-if test -z "$PATCH"; then
-   as_fn_error $? "You need 'patch' to apply patches." "$LINENO" 5
-fi
-
-# Other installations (libraries or tools if applicable)
-mkdir -p ../libs
-mkdir -p ../tools
-
-
-
-
-
-
-
-
-
-    # echo target targetvar flag url location
-
-    OSU_PATH=""
-    OSU_GET() {
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../libs/osu" >&5
-$as_echo_n "checking for ../libs/osu... " >&6; }
-if ${ac_cv_file____libs_osu+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  test "$cross_compiling" = yes &&
-  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
-if test -r "../libs/osu"; then
-  ac_cv_file____libs_osu=yes
-else
-  ac_cv_file____libs_osu=no
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____libs_osu" >&5
-$as_echo "$ac_cv_file____libs_osu" >&6; }
-if test "x$ac_cv_file____libs_osu" = xyes; then :
-
-                echo "Using pre-existing osu download..."
-
-else
-
-                mkdir -p ../libs/osu
-                sh ./download.sh 'https://vlsiarch.ecen.okstate.edu/flows/MOSIS_SCMOS/osu_stdcells_v2.4/osu_stdcells_lib.v2.4.tar.gz' ../libs/osu.tar.gz
-                (echo "Extracting osu..." && cd ../libs && tar -xf osu.tar.gz --strip-components 1 -C ../libs/osu)
-
-
-fi
-
-        export OSU_PATH=../libs/osu
-    }
-
-    # Check whether --enable-osu-lib was given.
-if test "${enable_osu_lib+set}" = set; then :
-  enableval=$enable_osu_lib;
-            if test "$enableval" == "yes" -o "$enableval" == "YES"; then
-                OSU_GET
-                XSCHEM_INST=1
-            elif test "$enableval" == "no" -o "$enableval" == "NO"; then
-                echo "Disabling osu..."
-                XSCHEM_DISABLED=1
-            else
-                OSU_PATH=$enableval
-            fi
-            OSU_PATH=`readlink -f $OSU_PATH`
-
-fi
-
-
-
-
-
-
-
-
-
-
-
-
-
-    # echo target targetvar flag url location
-
-    SKY130_ML_XX_HD_PATH=""
-    SKY130_ML_XX_HD_GET() {
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../libs/sky130_ml_xx_hd" >&5
-$as_echo_n "checking for ../libs/sky130_ml_xx_hd... " >&6; }
-if ${ac_cv_file____libs_sky130_ml_xx_hd+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  test "$cross_compiling" = yes &&
-  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
-if test -r "../libs/sky130_ml_xx_hd"; then
-  ac_cv_file____libs_sky130_ml_xx_hd=yes
-else
-  ac_cv_file____libs_sky130_ml_xx_hd=no
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____libs_sky130_ml_xx_hd" >&5
-$as_echo "$ac_cv_file____libs_sky130_ml_xx_hd" >&6; }
-if test "x$ac_cv_file____libs_sky130_ml_xx_hd" = xyes; then :
-
-                echo "Using pre-existing sky130_ml_xx_hd download..."
-
-else
-
-                mkdir -p ../libs/sky130_ml_xx_hd
-                sh ./download.sh 'https://github.com/PaulSchulz/sky130_pschulz_xx_hd/archive/master.tar.gz' ../libs/sky130_ml_xx_hd.tar.gz
-                (echo "Extracting sky130_ml_xx_hd..." && cd ../libs && tar -xf sky130_ml_xx_hd.tar.gz --strip-components 1 -C ../libs/sky130_ml_xx_hd)
-
-
-fi
-
-        export SKY130_ML_XX_HD_PATH=../libs/sky130_ml_xx_hd
-    }
-
-    # Check whether --enable-alpha-lib was given.
-if test "${enable_alpha_lib+set}" = set; then :
-  enableval=$enable_alpha_lib;
-            if test "$enableval" == "yes" -o "$enableval" == "YES"; then
-                SKY130_ML_XX_HD_GET
-                XSCHEM_INST=1
-            elif test "$enableval" == "no" -o "$enableval" == "NO"; then
-                echo "Disabling sky130_ml_xx_hd..."
-                XSCHEM_DISABLED=1
-            else
-                SKY130_ML_XX_HD_PATH=$enableval
-            fi
-            SKY130_ML_XX_HD_PATH=`readlink -f $SKY130_ML_XX_HD_PATH`
-
-fi
-
-
-
-
-
-
-
-XSCHEM_DISABLED=0
-XSCHEM_INST=0
-
-
-
-
-
-
-
-    # echo target targetvar flag url location
-
-    XSCHEM_PATH=""
-    XSCHEM_GET() {
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../tools/xschem" >&5
-$as_echo_n "checking for ../tools/xschem... " >&6; }
-if ${ac_cv_file____tools_xschem+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  test "$cross_compiling" = yes &&
-  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
-if test -r "../tools/xschem"; then
-  ac_cv_file____tools_xschem=yes
-else
-  ac_cv_file____tools_xschem=no
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____tools_xschem" >&5
-$as_echo "$ac_cv_file____tools_xschem" >&6; }
-if test "x$ac_cv_file____tools_xschem" = xyes; then :
-
-                echo "Using pre-existing xschem download..."
-
-else
-
-                mkdir -p ../tools/xschem
-                sh ./download.sh 'https://github.com/StefanSchippers/xschem/archive/master.tar.gz' ../tools/xschem.tar.gz
-                (echo "Extracting xschem..." && cd ../tools && tar -xf xschem.tar.gz --strip-components 1 -C ../tools/xschem)
-
-
-fi
-
-        export XSCHEM_PATH=../tools/xschem
-    }
-
-    # Check whether --enable-xschem was given.
-if test "${enable_xschem+set}" = set; then :
-  enableval=$enable_xschem;
-            if test "$enableval" == "yes" -o "$enableval" == "YES"; then
-                XSCHEM_GET
-                XSCHEM_INST=1
-            elif test "$enableval" == "no" -o "$enableval" == "NO"; then
-                echo "Disabling xschem..."
-                XSCHEM_DISABLED=1
-            else
-                XSCHEM_PATH=$enableval
-            fi
-            XSCHEM_PATH=`readlink -f $XSCHEM_PATH`
-
-fi
-
-
-
-    if [ "$XSCHEM_INST" = 1 ]; then
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../tools/xschem-install" >&5
-$as_echo_n "checking for ../tools/xschem-install... " >&6; }
-if ${ac_cv_file____tools_xschem_install+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  test "$cross_compiling" = yes &&
-  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
-if test -r "../tools/xschem-install"; then
-  ac_cv_file____tools_xschem_install=yes
-else
-  ac_cv_file____tools_xschem_install=no
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____tools_xschem_install" >&5
-$as_echo "$ac_cv_file____tools_xschem_install" >&6; }
-if test "x$ac_cv_file____tools_xschem_install" = xyes; then :
-
-            echo "Using pre-existing xschem installation..."
-
-else
-
-            echo "---"
-            echo "Note: attempting to build xschem. Xschem requires all of Magic's dependencies and further, flex, bison and libxpm."
-            echo "Your build WILL fail if any of these are missing. You can choose to remove --enable-xschem or add a known installation path."
-            sleep 2
-            mkdir -p ../tools/xschem-install
-            XSCHEM_ABSOLUTE=`readlink -f ../tools/xschem-install`
-            (cd ../tools/xschem && ./configure --prefix=$XSCHEM_ABSOLUTE && make && make install)
-            XSCHEM_PATH=$XSCHEM_ABSOLUTE
-
-fi
-
-    fi
-
-
-
-
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: Tools enabled for PDK setup installation: klayout magic netgen openlane qflow" >&5
-$as_echo "$as_me: Tools enabled for PDK setup installation: klayout magic netgen openlane qflow" >&6;}
-
-
-
-
-
-        KLAYOUT_DISABLED=0
-        # Check whether --enable-klayout was given.
-if test "${enable_klayout+set}" = set; then :
-  enableval=$enable_klayout;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    KLAYOUT_DISABLED=1
-                fi
-
-fi
-
-
-
-
-
-        MAGIC_DISABLED=0
-        # Check whether --enable-magic was given.
-if test "${enable_magic+set}" = set; then :
-  enableval=$enable_magic;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    MAGIC_DISABLED=1
-                fi
-
-fi
-
-
-
-
-
-        NETGEN_DISABLED=0
-        # Check whether --enable-netgen was given.
-if test "${enable_netgen+set}" = set; then :
-  enableval=$enable_netgen;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    NETGEN_DISABLED=1
-                fi
-
-fi
-
-
-
-
-
-        OPENLANE_DISABLED=0
-        # Check whether --enable-openlane was given.
-if test "${enable_openlane+set}" = set; then :
-  enableval=$enable_openlane;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    OPENLANE_DISABLED=1
-                fi
-
-fi
-
-
-
-
-
-        QFLOW_DISABLED=0
-        # Check whether --enable-qflow was given.
-if test "${enable_qflow+set}" = set; then :
-  enableval=$enable_qflow;
-                if test "$enableval" == "no" -o "$enableval" == "NO"; then
-                    QFLOW_DISABLED=1
-                fi
-
-fi
-
-
-
-
-
-# Checking if (some) prerequisites are satisfied
 ## REQUIRES: https://www.gnu.org/software/autoconf-archive/ax_python_module.html#ax_python_module
 
 
@@ -2758,6 +2058,714 @@
 	fi
 
 
+realpath() {
+    # Cross-platform, handles ~
+    python3 -c 'import os,sys;print(os.path.realpath(os.path.expanduser(sys.argv[1])))' $1
+}
+
+# detect PDKs based on directories that include Makefile.in files
+
+
+# define tools
+# define tools to install setup files for.  This does not imply that the tools are
+# available on the system;  just that open_pdks will install the setup files for them.
+## DO NOT INCLUDE XSCHEM IN THE TOOL LIST. XSCHEM CAN BE INSTALLED IN THE CONFIG SCRIPT
+
+
+mkdir -p ../pdks
+
+# check for the source and install paths for each PDK.
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: Found technology directories: sky130" >&5
+$as_echo "$as_me: Found technology directories: sky130" >&6;}
+
+
+
+    # --enable-pdk-[pdk]=/path/to/pdk
+
+
+
+        SKY130_SOURCE_PATH=""
+        SKY130_LOCAL_PATH=""
+        SKY130_DIST_PATH=""
+        SKY130_LINK_TARGETS="none"
+
+        pdk_get() {
+            { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../sky130/pdk_info" >&5
+$as_echo_n "checking for ../sky130/pdk_info... " >&6; }
+if ${ac_cv_file____sky130_pdk_info+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "../sky130/pdk_info"; then
+  ac_cv_file____sky130_pdk_info=yes
+else
+  ac_cv_file____sky130_pdk_info=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____sky130_pdk_info" >&5
+$as_echo "$ac_cv_file____sky130_pdk_info" >&6; }
+if test "x$ac_cv_file____sky130_pdk_info" = xyes; then :
+
+                { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../pdks/sky130" >&5
+$as_echo_n "checking for ../pdks/sky130... " >&6; }
+if ${ac_cv_file____pdks_sky130+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "../pdks/sky130"; then
+  ac_cv_file____pdks_sky130=yes
+else
+  ac_cv_file____pdks_sky130=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____pdks_sky130" >&5
+$as_echo "$ac_cv_file____pdks_sky130" >&6; }
+if test "x$ac_cv_file____pdks_sky130" = xyes; then :
+
+                    echo "Using pre-existing sky130 download..."
+
+else
+
+                    REPO=$(cat "../sky130/pdk_info" | sed -n "1p")
+                    POST_CLONE_COMMANDS=$(cat "../sky130/pdk_info" | sed "1d")
+                    mkdir -p ../pdks
+                    git clone "$REPO" ../pdks/sky130;
+                    (cd ../pdks/sky130 && sh -c "$POST_CLONE_COMMANDS")
+
+fi
+
+                export SKY130_SOURCE_PATH=../pdks/sky130
+
+else
+
+                as_fn_error $? "PDK sky130 cannot be automatically downloaded and requires a path." "$LINENO" 5
+
+fi
+
+        }
+
+        pdk_find() {
+            FOUND=0
+            for path in /opt/pdks/sky130 /usr/share/pdks/sky130 /usr/local/share/pdks/sky130; do
+                if [ -d $path ] ; then
+                    echo "Found sky130 in $path, using this installation..."
+                    export SKY130_SOURCE_PATH=$path
+                    FOUND=1
+                fi
+            done
+            if [ "$FOUND" = "sky130" ]; then
+                echo "Could not found sky130 in standard search paths, manually downloading to ../pdks/sky130 ..."
+                pdk_find
+            fi
+        }
+
+        # Check whether --enable-sky130-sky130 was given.
+if test "${enable_sky130_pdk+set}" = set; then :
+  enableval=$enable_sky130_pdk;
+                if test "$enableval" == "yes" -o "$enableval" == "YES"; then
+                   pdk_find
+                elif test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    echo "Disabling sky130..."
+                else
+                    SKY130_SOURCE_PATH=$enableval
+                fi
+
+else
+
+                pdk_find
+
+
+fi
+
+	    # # Require this argument
+
+        if [ "$SKY130_SOURCE_PATH" != "" ]; then
+            SKY130_SOURCE_PATH=`realpath $SKY130_SOURCE_PATH`
+            SKY130_BASENAME=`basename $SKY130_SOURCE_PATH`
+	    if [ "$SKY130_BASENAME" = "libraries" ]; then
+		SKY130_SOURCE_PATH=`dirname $SKY130_SOURCE_PATH`
+	    fi
+            # 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 $SKY130_SOURCE_PATH" >&6;}
+            as_ac_File=`$as_echo "ac_cv_file_$SKY130_SOURCE_PATH" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $SKY130_SOURCE_PATH" >&5
+$as_echo_n "checking for $SKY130_SOURCE_PATH... " >&6; }
+if eval \${$as_ac_File+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "$SKY130_SOURCE_PATH"; then
+  eval "$as_ac_File=yes"
+else
+  eval "$as_ac_File=no"
+fi
+fi
+eval ac_res=\$$as_ac_File
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_File"\" = x"yes"; then :
+
+                { $as_echo "$as_me:${as_lineno-$LINENO}: 'sky130' source path found at $SKY130_SOURCE_PATH" >&5
+$as_echo "$as_me: 'sky130' source path found at $SKY130_SOURCE_PATH" >&6;}
+
+else
+
+                as_fn_error $? "Specified path for 'sky130' at $SKY130_SOURCE_PATH not found" "$LINENO" 5
+
+fi
+
+
+            # --with-pdk-local-path=PDK_LOCAL_PATH
+
+# Check whether --with-sky130-local-path was given.
+if test "${with_sky130_local_path+set}" = set; then :
+  withval=$with_sky130_local_path; SKY130_LOCAL_PATH=$withval
+
+fi
+
+
+            # Require this argument
+            { $as_echo "$as_me:${as_lineno-$LINENO}: Checking whether local path is specified for 'sky130'" >&5
+$as_echo "$as_me: Checking whether local path is specified for 'sky130'" >&6;}
+            if test "x$SKY130_LOCAL_PATH" == "x" ; then
+                as_fn_error $? "Option --with-sky130-local-path=<path> not specified!" "$LINENO" 5
+                SKY130_LOCAL_PATH=""
+            else
+                SKY130_LOCAL_PATH=`realpath $SKY130_LOCAL_PATH`
+            fi
+
+            # --with-pdk-dist-path=PDK_DIST_PATH
+
+# Check whether --with-sky130-dist-path was given.
+if test "${with_sky130_dist_path+set}" = set; then :
+  withval=$with_sky130_dist_path; SKY130_DIST_PATH=$withval
+
+fi
+
+
+
+            # "Require" this argument
+            { $as_echo "$as_me:${as_lineno-$LINENO}: Checking whether distribution path is specified for 'sky130'" >&5
+$as_echo "$as_me: Checking whether distribution path is specified for 'sky130'" >&6;}
+            if test "x$SKY130_DIST_PATH" == "x" ; then
+                { $as_echo "$as_me:${as_lineno-$LINENO}: Option --with-sky130-dist-path=<path> not specified.  Local install only." >&5
+$as_echo "$as_me: Option --with-sky130-dist-path=<path> not specified.  Local install only." >&6;}
+                SKY130_DIST_PATH=""
+            else
+                SKY130_DIST_PATH=`realpath $SKY130_DIST_PATH`
+            fi
+
+            # --with-pdk-link-targets=PDK_LINK_TARGETS
+
+# Check whether --with-sky130-link-targets was given.
+if test "${with_sky130_link_targets+set}" = set; then :
+  withval=$with_sky130_link_targets; SKY130_LINK_TARGETS=$with_sky130_link_targets
+
+fi
+
+
+            { $as_echo "$as_me:${as_lineno-$LINENO}: Link targets set to $SKY130_LINK_TARGETS" >&5
+$as_echo "$as_me: Link targets set to $SKY130_LINK_TARGETS" >&6;}
+        fi
+
+
+
+
+
+
+
+
+# Set variables for tool setups
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: Found tools: klayout magic netgen openlane qflow" >&5
+$as_echo "$as_me: Found tools: klayout magic netgen openlane qflow" >&6;}
+
+
+
+
+
+        KLAYOUT_DISABLED=0
+        # Check whether --enable-klayout was given.
+if test "${enable_klayout+set}" = set; then :
+  enableval=$enable_klayout;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    KLAYOUT_DISABLED=1
+                fi
+
+
+fi
+
+
+
+
+
+        MAGIC_DISABLED=0
+        # Check whether --enable-magic was given.
+if test "${enable_magic+set}" = set; then :
+  enableval=$enable_magic;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    MAGIC_DISABLED=1
+                fi
+
+
+fi
+
+
+
+
+
+        NETGEN_DISABLED=0
+        # Check whether --enable-netgen was given.
+if test "${enable_netgen+set}" = set; then :
+  enableval=$enable_netgen;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    NETGEN_DISABLED=1
+                fi
+
+
+fi
+
+
+
+
+
+        OPENLANE_DISABLED=0
+        # Check whether --enable-openlane was given.
+if test "${enable_openlane+set}" = set; then :
+  enableval=$enable_openlane;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    OPENLANE_DISABLED=1
+                fi
+
+
+fi
+
+
+
+
+
+        QFLOW_DISABLED=0
+        # Check whether --enable-qflow was given.
+if test "${enable_qflow+set}" = set; then :
+  enableval=$enable_qflow;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    QFLOW_DISABLED=1
+                fi
+
+
+fi
+
+
+
+
+
+# Magic
+# Extract the first word of "magic", so it can be a program name with args.
+set dummy magic; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_MAGIC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $MAGIC in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_MAGIC="$MAGIC" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_MAGIC="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+MAGIC=$ac_cv_path_MAGIC
+if test -n "$MAGIC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC" >&5
+$as_echo "$MAGIC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+if test -z "$MAGIC"; then
+   as_fn_error $? "You need 'magic' to generate the needed various cell views." "$LINENO" 5
+fi
+# Extract the first word of "patch", so it can be a program name with args.
+set dummy patch; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_PATCH+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $PATCH in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PATCH="$PATCH" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_PATCH="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+PATCH=$ac_cv_path_PATCH
+if test -n "$PATCH"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PATCH" >&5
+$as_echo "$PATCH" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+if test -z "$PATCH"; then
+   as_fn_error $? "You need 'patch' to apply patches." "$LINENO" 5
+fi
+
+# Other installations (libraries or tools if applicable)
+mkdir -p ../libs
+mkdir -p ../tools
+
+
+
+
+
+
+
+
+
+    # echo target targetvar flag url location
+
+    OSU_PATH=""
+    OSU_GET() {
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../libs/osu" >&5
+$as_echo_n "checking for ../libs/osu... " >&6; }
+if ${ac_cv_file____libs_osu+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "../libs/osu"; then
+  ac_cv_file____libs_osu=yes
+else
+  ac_cv_file____libs_osu=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____libs_osu" >&5
+$as_echo "$ac_cv_file____libs_osu" >&6; }
+if test "x$ac_cv_file____libs_osu" = xyes; then :
+
+                echo "Using pre-existing osu download..."
+
+else
+
+                mkdir -p ../libs/osu
+                sh ./download.sh 'https://vlsiarch.ecen.okstate.edu/flows/MOSIS_SCMOS/osu_stdcells_v2.4/osu_stdcells_lib.v2.4.tar.gz' ../libs/osu.tar.gz
+                (echo "Extracting osu..." && cd ../libs && tar -xf osu.tar.gz --strip-components 1 -C ../libs/osu)
+
+
+fi
+
+        export OSU_PATH=../libs/osu
+    }
+
+    # Check whether --enable-osu-lib was given.
+if test "${enable_osu_lib+set}" = set; then :
+  enableval=$enable_osu_lib;
+            if test "$enableval" == "yes" -o "$enableval" == "YES"; then
+                OSU_GET
+                XSCHEM_INST=1
+            elif test "$enableval" == "no" -o "$enableval" == "NO"; then
+                echo "Disabling osu..."
+                XSCHEM_DISABLED=1
+            else
+                OSU_PATH=$enableval
+            fi
+            OSU_PATH=`realpath $OSU_PATH`
+
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+    # echo target targetvar flag url location
+
+    SKY130_ML_XX_HD_PATH=""
+    SKY130_ML_XX_HD_GET() {
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../libs/sky130_ml_xx_hd" >&5
+$as_echo_n "checking for ../libs/sky130_ml_xx_hd... " >&6; }
+if ${ac_cv_file____libs_sky130_ml_xx_hd+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "../libs/sky130_ml_xx_hd"; then
+  ac_cv_file____libs_sky130_ml_xx_hd=yes
+else
+  ac_cv_file____libs_sky130_ml_xx_hd=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____libs_sky130_ml_xx_hd" >&5
+$as_echo "$ac_cv_file____libs_sky130_ml_xx_hd" >&6; }
+if test "x$ac_cv_file____libs_sky130_ml_xx_hd" = xyes; then :
+
+                echo "Using pre-existing sky130_ml_xx_hd download..."
+
+else
+
+                mkdir -p ../libs/sky130_ml_xx_hd
+                sh ./download.sh 'https://github.com/PaulSchulz/sky130_pschulz_xx_hd/archive/master.tar.gz' ../libs/sky130_ml_xx_hd.tar.gz
+                (echo "Extracting sky130_ml_xx_hd..." && cd ../libs && tar -xf sky130_ml_xx_hd.tar.gz --strip-components 1 -C ../libs/sky130_ml_xx_hd)
+
+
+fi
+
+        export SKY130_ML_XX_HD_PATH=../libs/sky130_ml_xx_hd
+    }
+
+    # Check whether --enable-alpha-lib was given.
+if test "${enable_alpha_lib+set}" = set; then :
+  enableval=$enable_alpha_lib;
+            if test "$enableval" == "yes" -o "$enableval" == "YES"; then
+                SKY130_ML_XX_HD_GET
+                XSCHEM_INST=1
+            elif test "$enableval" == "no" -o "$enableval" == "NO"; then
+                echo "Disabling sky130_ml_xx_hd..."
+                XSCHEM_DISABLED=1
+            else
+                SKY130_ML_XX_HD_PATH=$enableval
+            fi
+            SKY130_ML_XX_HD_PATH=`realpath $SKY130_ML_XX_HD_PATH`
+
+fi
+
+
+
+
+
+
+
+XSCHEM_DISABLED=0
+XSCHEM_INST=0
+
+
+
+
+
+
+
+    # echo target targetvar flag url location
+
+    XSCHEM_PATH=""
+    XSCHEM_GET() {
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../tools/xschem" >&5
+$as_echo_n "checking for ../tools/xschem... " >&6; }
+if ${ac_cv_file____tools_xschem+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "../tools/xschem"; then
+  ac_cv_file____tools_xschem=yes
+else
+  ac_cv_file____tools_xschem=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____tools_xschem" >&5
+$as_echo "$ac_cv_file____tools_xschem" >&6; }
+if test "x$ac_cv_file____tools_xschem" = xyes; then :
+
+                echo "Using pre-existing xschem download..."
+
+else
+
+                mkdir -p ../tools/xschem
+                sh ./download.sh 'https://github.com/StefanSchippers/xschem/archive/master.tar.gz' ../tools/xschem.tar.gz
+                (echo "Extracting xschem..." && cd ../tools && tar -xf xschem.tar.gz --strip-components 1 -C ../tools/xschem)
+
+
+fi
+
+        export XSCHEM_PATH=../tools/xschem
+    }
+
+    # Check whether --enable-xschem was given.
+if test "${enable_xschem+set}" = set; then :
+  enableval=$enable_xschem;
+            if test "$enableval" == "yes" -o "$enableval" == "YES"; then
+                XSCHEM_GET
+                XSCHEM_INST=1
+            elif test "$enableval" == "no" -o "$enableval" == "NO"; then
+                echo "Disabling xschem..."
+                XSCHEM_DISABLED=1
+            else
+                XSCHEM_PATH=$enableval
+            fi
+            XSCHEM_PATH=`realpath $XSCHEM_PATH`
+
+fi
+
+
+
+    if [ "$XSCHEM_INST" = 1 ]; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ../tools/xschem-install" >&5
+$as_echo_n "checking for ../tools/xschem-install... " >&6; }
+if ${ac_cv_file____tools_xschem_install+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "../tools/xschem-install"; then
+  ac_cv_file____tools_xschem_install=yes
+else
+  ac_cv_file____tools_xschem_install=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_file____tools_xschem_install" >&5
+$as_echo "$ac_cv_file____tools_xschem_install" >&6; }
+if test "x$ac_cv_file____tools_xschem_install" = xyes; then :
+
+            echo "Using pre-existing xschem installation..."
+
+else
+
+            echo "---"
+            echo "Note: attempting to build xschem. Xschem requires all of Magic's dependencies and further, flex, bison and libxpm."
+            echo "Your build WILL fail if any of these are missing. You can choose to remove --enable-xschem or add a known installation path."
+            sleep 2
+            mkdir -p ../tools/xschem-install
+            XSCHEM_ABSOLUTE=`realpath ../tools/xschem-install`
+            (cd ../tools/xschem && ./configure --prefix=$XSCHEM_ABSOLUTE && make && make install)
+            XSCHEM_PATH=$XSCHEM_ABSOLUTE
+
+fi
+
+    fi
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: Tools enabled for PDK setup installation: klayout magic netgen openlane qflow" >&5
+$as_echo "$as_me: Tools enabled for PDK setup installation: klayout magic netgen openlane qflow" >&6;}
+
+
+
+
+
+        KLAYOUT_DISABLED=0
+        # Check whether --enable-klayout was given.
+if test "${enable_klayout+set}" = set; then :
+  enableval=$enable_klayout;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    KLAYOUT_DISABLED=1
+                fi
+
+fi
+
+
+
+
+
+        MAGIC_DISABLED=0
+        # Check whether --enable-magic was given.
+if test "${enable_magic+set}" = set; then :
+  enableval=$enable_magic;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    MAGIC_DISABLED=1
+                fi
+
+fi
+
+
+
+
+
+        NETGEN_DISABLED=0
+        # Check whether --enable-netgen was given.
+if test "${enable_netgen+set}" = set; then :
+  enableval=$enable_netgen;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    NETGEN_DISABLED=1
+                fi
+
+fi
+
+
+
+
+
+        OPENLANE_DISABLED=0
+        # Check whether --enable-openlane was given.
+if test "${enable_openlane+set}" = set; then :
+  enableval=$enable_openlane;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    OPENLANE_DISABLED=1
+                fi
+
+fi
+
+
+
+
+
+        QFLOW_DISABLED=0
+        # Check whether --enable-qflow was given.
+if test "${enable_qflow+set}" = set; then :
+  enableval=$enable_qflow;
+                if test "$enableval" == "no" -o "$enableval" == "NO"; then
+                    QFLOW_DISABLED=1
+                fi
+
+fi
+
+
+
+
+
 # Check for "--with-ef-style"
 EF_STYLE=0
 
diff --git a/scripts/configure.ac b/scripts/configure.ac
index c6a0c53..d153c38 100755
--- a/scripts/configure.ac
+++ b/scripts/configure.ac
@@ -1,5 +1,14 @@
 AC_INIT([open_pdks], [1.0], [github.com/RTimothyEdwards/open_pdks])
 
+## REQUIRES: https://www.gnu.org/software/autoconf-archive/ax_python_module.html#ax_python_module
+AM_PATH_PYTHON([3.4])
+AX_PYTHON_MODULE([distutils],[])
+
+realpath() {
+    # Cross-platform, handles ~
+    python3 -c 'import os,sys;print(os.path.realpath(os.path.expanduser(sys.argv@<:@1@:>@)))' $1
+}
+
 # detect PDKs based on directories that include Makefile.in files
 m4_define([M4_GET_TECHS], [m4_normalize(m4_esyscmd(cd .. && find * -mindepth 1 -maxdepth 1 -name "Makefile.in" -exec dirname {} \; | tr "\n" " "))])
 
@@ -72,7 +81,11 @@
 	    # # Require this argument
 
         if @<:@ "$[]pdkvar[]_SOURCE_PATH" != "" @:>@; then
-            pdkvar[]_SOURCE_PATH=`readlink -f $[]pdkvar[]_SOURCE_PATH`
+            pdkvar[]_SOURCE_PATH=`realpath $[]pdkvar[]_SOURCE_PATH`
+            pdkvar[]_BASENAME=`basename $[]pdkvar[]_SOURCE_PATH`
+	    if @<:@ "$[]pdkvar[]_BASENAME" = "libraries" @:>@; then
+		pdkvar[]_SOURCE_PATH=`dirname $[]pdkvar[]_SOURCE_PATH`
+	    fi
             # basic check that the PDK exists there (the path must exist in any case)
             AC_MSG_NOTICE([Checking specified path for 'pdk' at $[]pdkvar[]_SOURCE_PATH])
             AC_CHECK_FILE($pdkvar[]_SOURCE_PATH,[
@@ -93,7 +106,7 @@
                 AC_MSG_ERROR([Option --with-pdk-local-path=<path> not specified!])
                 pdkvar[]_LOCAL_PATH=""
             else
-                pdkvar[]_LOCAL_PATH=`readlink -f $[]pdkvar[]_LOCAL_PATH`
+                pdkvar[]_LOCAL_PATH=`realpath $[]pdkvar[]_LOCAL_PATH`
             fi
 
             # --with-pdk-dist-path=PDK_DIST_PATH
@@ -109,7 +122,7 @@
                 AC_MSG_NOTICE([Option --with-pdk-dist-path=<path> not specified.  Local install only.])
                 pdkvar[]_DIST_PATH=""
             else
-                pdkvar[]_DIST_PATH=`readlink -f $[]pdkvar[]_DIST_PATH`
+                pdkvar[]_DIST_PATH=`realpath $[]pdkvar[]_DIST_PATH`
             fi
 
             # --with-pdk-link-targets=PDK_LINK_TARGETS
@@ -208,7 +221,7 @@
             else
                 targetvar[]_PATH=$enableval
             fi
-            targetvar[]_PATH=`readlink -f $[]targetvar[]_PATH`
+            targetvar[]_PATH=`realpath $[]targetvar[]_PATH`
         ],
         []
     )
@@ -233,7 +246,7 @@
             echo "Your build WILL fail if any of these are missing. You can choose to remove --enable-xschem or add a known installation path."
             sleep 2
             mkdir -p ../tools/xschem-install
-            XSCHEM_ABSOLUTE=`readlink -f ../tools/xschem-install`
+            XSCHEM_ABSOLUTE=`realpath ../tools/xschem-install`
             (cd ../tools/xschem && ./configure --prefix=$XSCHEM_ABSOLUTE && make && make install)
             XSCHEM_PATH=$XSCHEM_ABSOLUTE
         ])
@@ -264,11 +277,6 @@
 
 M4_GEN_WITH_TOOLS(M4_GET_TOOLS())
 
-# Checking if (some) prerequisites are satisfied
-## REQUIRES: https://www.gnu.org/software/autoconf-archive/ax_python_module.html#ax_python_module
-AM_PATH_PYTHON([3.4])
-AX_PYTHON_MODULE([distutils],[])
-
 # Check for "--with-ef-style"
 EF_STYLE=0
 AC_ARG_WITH(
diff --git a/sky130/.gitignore b/sky130/.gitignore
index 2dd427d..4425c6f 100644
--- a/sky130/.gitignore
+++ b/sky130/.gitignore
@@ -1,4 +1,3 @@
 # staged PDKs
-sky130/sky130A
-sky130/sky130A/*
+sky130A/
 
diff --git a/sky130/Makefile.in b/sky130/Makefile.in
index d8fe84b..d54887a 100644
--- a/sky130/Makefile.in
+++ b/sky130/Makefile.in
@@ -156,6 +156,9 @@
 
 # Path to skywater_pdk 
 SKYWATER_PATH = @SKY130_SOURCE_PATH@
+ifneq ($(SKYWATER_PATH),)
+SKYWATER_PATH = $(SKYWATER_PATH)/libraries
+endif
 
 # Path to OSU standard cell library sources (to be added to configuration options).
 OSU_PATH = ~/gits/osu_130_pdk