Issue 5146 - Implement DownloadableSubscription parsing in C++

meson.build

 project('adblockpluscore', license: ['GPL3'], meson_version: '>0.40.0')
 
 # locate emscripten-config
 python = import('python3').find_python()
 emscripten_config = get_option('emscripten-config')
 command = run_command(python, '-c', 'import os.path, sys;print(os.path.expanduser(sys.argv[1]))', emscripten_config)
 if command.returncode() != 0
   error(command.stderr().strip())
 endif
 emscripten_config = command.stdout().strip()
@@ skipping 54 matching lines @@
   'compiled/filter/ElemHideException.cpp',
   'compiled/filter/ElemHideFilter.cpp',
   'compiled/filter/Filter.cpp',
   'compiled/filter/InvalidFilter.cpp',
   'compiled/filter/RegExpFilter.cpp',
   'compiled/filter/WhitelistFilter.cpp',
   'compiled/storage/FilterStorage.cpp',
   'compiled/subscription/DownloadableSubscription.cpp',
   'compiled/subscription/Subscription.cpp',
   'compiled/subscription/UserDefinedSubscription.cpp',
+  'compiled/Base64.cpp',
   'compiled/ElemHide.cpp',
   'compiled/ElemHideEmulation.cpp',
+  'compiled/Md5.cpp',
 ]
 # sources specific to core
 core_sources = [
   'compiled/traceInit.cpp',
 ]
 # sources for the bindings generator
 bindings_sources = [
   'compiled/bindings/generator.cpp',
   'compiled/bindings/main.cpp',
 ]
@@ skipping 73 matching lines @@
                                 build_by_default: true,
                                 input: core_objects + shared_objects,
                                 output: COMPILER_OUTPUT,
                                 depend_files: [ JS_LIBRARY ],
                                 command: [
                                   emcc, '-o', output_file,
                                   '--post-js', bindings_output,
                                   '--js-library', JS_LIBRARY,
                                   '@INPUT@'
                                 ] + compiler_args + optional_args)