bshell: re-organise build into three separate components

bshell: the front-end binary
bshell.runtime: contains the parser, compiler, and classes needed to run bshell scripts
bshell.core: contains the builtin commandlets and aliases

CMakeLists.txt

@@ -17,34 +17,8 @@ execute_process(
 	COMMAND ${Python_EXECUTABLE}
 		${CMAKE_CURRENT_SOURCE_DIR}/tools/build-id.py
 	OUTPUT_VARIABLE bshell_version)
-
-set(source_dirs
-	ast compile parse parse/lex parse/syntax
-	runtime format command cmdlets aliases)
-
-if (bshell_interactive EQUAL 1)
-	message(STATUS "Interactive support: Enabled")
-	set(source_dirs ${source_dirs} line-ed)
-else ()
-	message(STATUS "Interactive support: Disabled")
-endif ()
-
-file(GLOB bshell_sources
-	bshell/*.c
-	bshell/*.h)
-
-foreach (d ${source_dirs})
-	file(GLOB sources
-		bshell/${d}/*.c
-		bshell/${d}/*.h)
-	set(bshell_sources ${bshell_sources} ${sources})
-endforeach (d)
-
 message(STATUS "B Shell version: ${bshell_version}")
 
-add_executable(bshell ${bshell_sources})
-
-target_link_libraries(bshell FX::Runtime FX::Collections FX::Term)
-target_compile_definitions(bshell PUBLIC
-	BSHELL_VERSION="${bshell_version}"
-	BSHELL_INTERACTIVE=${bshell_interactive})
+add_subdirectory(bshell)
+add_subdirectory(bshell.runtime)
+add_subdirectory(bshell.core)