[ports] build libicu_io when -sUSE_ICU=1 (#20181)

Author: PikachuHy

tools/ports/icu.py

@@ -14,6 +14,7 @@
 libname_libicu_common = 'libicu_common'
 libname_libicu_stubdata = 'libicu_stubdata'
 libname_libicu_i18n = 'libicu_i18n'
+libname_libicu_io = 'libicu_io'
 
 
 def needed(settings):
@@ -75,17 +76,27 @@ def create_libicu_i18n(lib_output):
     other_includes = [os.path.join(icu_source_path, 'common')]
     build_lib(lib_output, lib_src, other_includes, ['-DU_I18N_IMPLEMENTATION=1'])
 
+  # creator for libicu_io
+  def create_libicu_io(lib_output):
+    prepare_build()
+    lib_src = os.path.join(icu_source_path, 'io')
+    ports.install_headers(os.path.join(lib_src, 'unicode'), target='unicode')
+    other_includes = [os.path.join(icu_source_path, 'common'), os.path.join(icu_source_path, 'i18n')]
+    build_lib(lib_output, lib_src, other_includes, ['-DU_IO_IMPLEMENTATION=1'])
+
   return [
       shared.cache.get_lib(get_lib_name(libname_libicu_common, settings), create_libicu_common), # this also prepares the build
       shared.cache.get_lib(get_lib_name(libname_libicu_stubdata, settings), create_libicu_stubdata),
-      shared.cache.get_lib(get_lib_name(libname_libicu_i18n, settings), create_libicu_i18n)
+      shared.cache.get_lib(get_lib_name(libname_libicu_i18n, settings), create_libicu_i18n),
+      shared.cache.get_lib(get_lib_name(libname_libicu_io, settings), create_libicu_io)
   ]
 
 
 def clear(ports, settings, shared):
   shared.cache.erase_lib(get_lib_name(libname_libicu_common, settings))
   shared.cache.erase_lib(get_lib_name(libname_libicu_stubdata, settings))
   shared.cache.erase_lib(get_lib_name(libname_libicu_i18n, settings))
+  shared.cache.erase_lib(get_lib_name(libname_libicu_io, settings))
 
 
 def process_args(ports):