build: prepare standalone libchewing-data project

Author: kanru

CMakeLists.txt

@@ -1,5 +1,9 @@
 cmake_minimum_required(VERSION 3.31.6...3.31.6)
-project(libchewing-data LANGUAGES NONE)
+project(libchewing-data VERSION 2026.1.27 LANGUAGES NONE)
+
+if(PROJECT_IS_TOP_LEVEL)
+  set(CMAKE_SYSTEM_NAME Generic)
+endif()
 
 option(USE_SYSTEM_CHEWING_CLI "Use system-installed chewing-cli instead of building from source" ON)
 
@@ -11,5 +15,12 @@ if(USE_SYSTEM_CHEWING_CLI)
   )
 endif()
 
+include(GNUInstallDirs)
+
 add_subdirectory(dict/chewing)
 add_subdirectory(misc)
+
+if(PROJECT_IS_TOP_LEVEL)
+  set(CPACK_GENERATOR "ZIP")
+  include(CPack)
+endif()

dict/chewing/CMakeLists.txt

@@ -8,4 +8,5 @@ foreach(TARGET ${TARGETS})
     COMMAND ${CHEWING_CLI} init --csv ${CMAKE_CURRENT_SOURCE_DIR}/${SRC} ${TARGET}
     DEPENDS ${SRC}
   )
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${TARGET} DESTINATION ${CMAKE_INSTALL_DATADIR}/libchewing)
 endforeach()

misc/CMakeLists.txt

@@ -15,3 +15,5 @@ add_custom_command(
     ${CMAKE_CURRENT_SOURCE_DIR}/symbols.dat
 )
 add_custom_target(misc ALL DEPENDS swkb.dat symbols.dat)
+
+install(FILES swkb.dat symbols.dat DESTINATION ${CMAKE_INSTALL_DATADIR}/libchewing)