refactor: split core ffi module

src/CMakeLists.txt

@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 3.12)
 
 add_subdirectory(core)
+add_subdirectory(core_ffi)
 add_subdirectory(core_test)
 
 #project(klotski-cli LANGUAGES C)

src/core/CMakeLists.txt

@@ -6,7 +6,6 @@ set(CMAKE_CXX_STANDARD 23)
 set(KLOTSKI_CORE_SRC
         all_cases/basic_ranges.cc
         all_cases/all_cases.cc
-        ffi/all_cases.cc
         common_code/common_code.cc
         common_code/serialize.cc
         common_code/sundry.cc
@@ -21,7 +20,8 @@ set(KLOTSKI_CORE_SRC
 )
 add_library(klotski_core STATIC ${KLOTSKI_CORE_SRC})
 target_compile_options(klotski_core PRIVATE -fno-rtti -fno-exceptions)
+target_include_directories(klotski_core PUBLIC utils all_cases raw_code short_code common_code)
 
-target_include_directories(klotski_core PUBLIC
-        utils all_cases
-        raw_code short_code common_code)
+# TODO: just for dev testing
+add_executable(klotski_core_bin main.cc)
+target_link_libraries(klotski_core_bin PRIVATE klotski_core)

src/core_ffi/CMakeLists.txt

@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.12)
+project(core_ffi LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 23)
+
+add_library(klotski all_cases.cc)
+target_include_directories(klotski PUBLIC include)
+target_link_libraries(klotski PRIVATE klotski_core)

src/core_test/CMakeLists.txt

@@ -3,15 +3,13 @@ project(core-test LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 23)
 
-set(KLOTSKI_TEST_DEPS klotski_core
+set(KLOTSKI_TEST_DEPS klotski klotski_core
         GTest::gtest_main bs::thread_pool md5sum xxHash::xxhash)
 
 # ------------------------------------------------------------------------------------ #
 
 include_directories(utility)
 
-include_directories(${KLOTSKI_ROOT_DIR}/src/core/ffi)
-
 # ------------------------------------------------------------------------------------ #
 
 set(KLOTSKI_TEST_CASES_SRC