diff --git a/common/create_lef_library.py b/common/create_lef_library.py
new file mode 100755
index 0000000..2b76f9a
--- /dev/null
+++ b/common/create_lef_library.py
@@ -0,0 +1,155 @@
+#!/usr/bin/env python3
+#
+# create_lef_library.py
+#
+#----------------------------------------------------------------------------
+# Given a destination directory holding individual LEF files of a number
+# of cells, create a single LEF library file named <alllibname> and place
+# it in the same directory.  This is done for the option "compile" if specified
+# for the "-lef" install.
+#----------------------------------------------------------------------------
+
+import sys
+import os
+import glob
+import fnmatch
+
+def usage():
+    print('')
+    print('Usage:')
+    print('    create_lef_library <destlibdir> <destlib> [-compile-only]')
+    print('            [-excludelist="file1,file2,..."]')
+    print('')
+    print('Create a single LEF library from a set of individual LEF files.')
+    print('')
+    print('where:')
+    print('    <destlibdir>      is the directory containing the individual LEF files')
+    print('    <destlib>         is the root name of the library file')
+    print('    -compile-only     remove the indidual files if specified')
+    print('    -excludelist=     is a comma-separated list of files to ignore')
+    print('')
+
+def create_lef_library(destlibdir, destlib, do_compile_only, excludelist):
+
+    alllibname = destlibdir + '/' + destlib + '.lef'
+    if os.path.isfile(alllibname):
+        os.remove(alllibname)
+
+    print('Diagnostic:  Creating consolidated LEF library ' + destlib + '.lef')
+    llist = glob.glob(destlibdir + '/*.lef')
+    if alllibname in llist:
+        llist.remove(alllibname)
+
+    # Create exclude list with glob-style matching using fnmatch
+    if len(llist) > 0:
+        llistnames = list(os.path.split(item)[1] for item in llist)
+        notllist = []
+        for exclude in excludelist:
+            notllist.extend(fnmatch.filter(llistnames, exclude))
+
+        # Apply exclude list
+        if len(notllist) > 0:
+            for file in llist[:]:
+                if os.path.split(file)[1] in notllist:
+                    llist.remove(file)
+
+    if len(llist) > 1:
+        print('New file is:  ' + alllibname)
+        with open(alllibname, 'w') as ofile:
+            headerdone = False
+            for lfile in llist:
+                with open(lfile, 'r') as ifile:
+                    # print('Adding ' + lfile + ' to library.')
+                    ltext = ifile.read()
+                    llines = ltext.splitlines()
+                    headerseen = False
+                    for lline in llines:
+                        if headerdone:
+                            if not headerseen:
+                                if not lline.startswith('MACRO'):
+                                    continue
+                                else:
+                                    headerseen = True
+                        ltok = lline.split()
+                        if ltok[0] == 'END' and ltok[1] == 'LIBRARY':
+                            # Remove "END LIBRARY" line from individual files
+                            pass
+                        else:
+                            print(lline, file=ofile)
+                    headerdone = True
+                print('#--------EOF---------\n', file=ofile)
+
+        if do_compile_only == True:
+            print('Compile-only:  Removing individual LEF files')
+            for lfile in llist:
+                if os.path.isfile(lfile):
+                    os.remove(lfile)
+            if newname:
+                if os.path.isfile(newname):
+                    os.remove(newname)
+    else:
+        print('Only one file (' + str(llist) + ');  ignoring "compile" option.')
+
+#----------------------------------------------------------------------------
+
+if __name__ == '__main__':
+
+    if len(sys.argv) == 1:
+        usage()
+        sys.exit(0)
+
+    argumentlist = []
+
+    # Defaults
+    do_compile_only = False
+    excludelist = []
+
+    # Break arguments into groups where the first word begins with "-".
+    # All following words not beginning with "-" are appended to the
+    # same list (optionlist).  Then each optionlist is processed.
+    # Note that the first entry in optionlist has the '-' removed.
+
+    for option in sys.argv[1:]:
+        if option.find('-', 0) == 0:
+            keyval = option[1:].split('=')
+            if keyval[0] == 'compile-only':
+                if len(keyval) > 0:
+                    if keyval[1].tolower() == 'true' or keyval[1] == 'yes' or keyval[1] == '1':
+                        do_compile_only = True
+                else:
+                    do_compile_only = True
+            elif keyval[1] == 'exclude' or key == 'excludelist':
+                if len(keyval) > 0:
+                    excludelist = keyval[1].trim('"').split(',')
+                else:
+                    print("No items in exclude list (ignoring).")
+            else:
+                print("Unknown option '" + keyval[0] + "' (ignoring).")
+        else:
+            argumentlist.append(option)
+
+    if len(argumentlist) < 2: 
+        print("Not enough arguments given to create_lef_library.py.")
+        usage()
+        sys.exit(1)
+
+    destlibdir = argumentlist[0]
+    destlib = argumentlist[1]
+
+    print('')
+    print('Create LEF library from files:')
+    print('')
+    print('Path to files: ' + destlibdir)
+    print('Name of compiled library: ' + destlib + '.lef')
+    print('Remove individual files: ' + 'Yes' if do_compile_only else 'No')
+    if len(excludelist) > 0:
+        print('List of files to exclude: ')
+        for file in excludelist:
+            print(file)
+    print('')
+
+    create_lef_library(destlibdir, destlib, do_compile_only, excludelist)
+    print('Done.')
+    sys.exit(0)
+
+#----------------------------------------------------------------------------