Regenerate CMake files list from upmake too

Replace the specialized Python script used for it before (and which was
actually forgotten to run a couple of times already) with a newer
version of upmake, which can now update CMake variable definitions too.

build/cmake/files.cmake

@@ -1,4 +1,4 @@
-# Automatically generated from build/files by update_files.py
+# Automatically generated from build/files by build/upmake
 # DO NOT MODIFY MANUALLY !
 
 set(BASE_UNIX_AND_DARWIN_SRC

build/cmake/update_files.py

@@ -1,77 +0,0 @@
-#!/usr/bin/env python
-
-#############################################################################
-# Name:        build/cmake/update_files.py
-# Purpose:     Convert build/files to files.cmake
-# Author:      Tobias Taschner
-# Created:     2016-09-20
-# Copyright:   (c) 2016 wxWidgets development team
-# Licence:     wxWindows licence
-#############################################################################
-
-import os
-import re
-
-outpath = os.path.dirname(os.path.abspath(__file__))
-
-infile = open(outpath + "/../files", "r")
-outfile = open(outpath + "/files.cmake", "w")
-outfile.write("# Automatically generated from build/files by " + os.path.basename(__file__) + "\n")
-outfile.write("# DO NOT MODIFY MANUALLY !\n\n")
-
-# Compile regular expressions
-var_ex = re.compile('([\w]+)[\s]*=')
-comment_ex = re.compile('^[#]+')
-evar_ex = re.compile('\$\(([\w]+)\)')
-cmd_ex = re.compile('^<')
-
-files = None
-var_name = None
-
-def write_file_list():
-    # Write current list of files to output file
-    if not var_name:
-        return
-
-    outfile.write('set(' + var_name + '\n')
-    for file in files:
-        outfile.write('    ')
-        vm = evar_ex.match(file)
-        if vm:
-            # Convert variable reference to cmake variable reference
-            outfile.write('${'+vm.group(1)+'}')
-        else:
-            outfile.write(file)
-        outfile.write('\n')
-
-    outfile.write(')\n\n')
-
-for line in infile.readlines():
-    # Ignore comment lines
-    m = comment_ex.match(line)
-    if m:
-        continue
-    m = cmd_ex.match(line.strip())
-    if m:
-        # Ignore bake file commands but note them in the target file in
-        # case we might need them
-        line = '#TODO: ' + line
-
-    # Check for variable declaration
-    m = var_ex.match(line)
-    if m:
-        write_file_list()
-
-        var_name = m.group(1)
-        files = []
-    else:
-        # Collect every file entry
-        file = line.strip()
-        if file and var_name:
-            files.append(file)
-
-# Write last variable
-write_file_list()
-
-infile.close()
-outfile.close()