Remove FFI metadata export

CMakeLists.txt

@@ -11,26 +11,6 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_MODULE_STD 26)
 set(CMAKE_CXX_MODULE_EXTENSIONS OFF)
 
-option(CPP_CORE_ENABLE_AST_EXPORT "Enable clang-based JSON AST export for the FFI headers" ON)
-set(
-    CPP_CORE_AST_JSON_OUTPUT
-    "${CMAKE_BINARY_DIR}/ast/cpp_core_ffi_ast.json"
-    CACHE FILEPATH
-    "Output path for the generated FFI AST JSON file"
-)
-set(
-    CPP_CORE_AST_CLANGXX
-    ""
-    CACHE FILEPATH
-    "Path to the clang++ executable used for AST JSON export"
-)
-set(
-    CPP_CORE_AST_SLIM_JSON_OUTPUT
-    "${CMAKE_BINARY_DIR}/ast/cpp_core_ffi_api.json"
-    CACHE FILEPATH
-    "Output path for the reduced FFI API JSON metadata"
-)
-
 include(cmake/CPM.cmake)
 
 CPMAddPackage(
@@ -93,85 +73,6 @@ if(BUILD_TESTING)
     target_link_libraries(cpp_core_compile_tests PRIVATE cpp_core_strict_warnings)
 endif()
 
-if(CPP_CORE_ENABLE_AST_EXPORT)
-    find_package(Python3 COMPONENTS Interpreter REQUIRED)
-
-    file(
-        GLOB _cpp_core_ast_interface_headers
-        CONFIGURE_DEPENDS
-        "${CMAKE_CURRENT_SOURCE_DIR}/include/cpp_core/interface/*.h"
-    )
-
-    set(
-        _cpp_core_ast_headers
-        "${CMAKE_CURRENT_SOURCE_DIR}/include/cpp_core/serial.h"
-        "${CMAKE_CURRENT_SOURCE_DIR}/include/cpp_core/error_callback.h"
-        "${CMAKE_CURRENT_SOURCE_DIR}/include/cpp_core/module_api.h"
-        "${CMAKE_CURRENT_SOURCE_DIR}/include/cpp_core/version.hpp"
-        ${_cpp_core_ast_interface_headers}
-    )
-
-    if(CPP_CORE_AST_CLANGXX)
-        set(_cpp_core_ast_clangxx "${CPP_CORE_AST_CLANGXX}")
-    else()
-        find_program(_cpp_core_ast_clangxx NAMES clang++)
-    endif()
-
-    if(NOT _cpp_core_ast_clangxx)
-        message(
-            FATAL_ERROR
-            "CPP_CORE_ENABLE_AST_EXPORT=ON requires clang++. "
-            "Install clang++ or set CPP_CORE_AST_CLANGXX to an explicit path."
-        )
-    endif()
-
-    set(_cpp_core_ast_wrapper "${CMAKE_CURRENT_BINARY_DIR}/ast/cpp_core_ffi_ast.cpp")
-    get_filename_component(_cpp_core_ast_json_dir "${CPP_CORE_AST_JSON_OUTPUT}" DIRECTORY)
-    get_filename_component(_cpp_core_ast_slim_json_dir "${CPP_CORE_AST_SLIM_JSON_OUTPUT}" DIRECTORY)
-
-    file(
-        GENERATE
-        OUTPUT "${_cpp_core_ast_wrapper}"
-        CONTENT "#include <cpp_core/serial.h>\n"
-    )
-
-    add_custom_command(
-        OUTPUT "${CPP_CORE_AST_JSON_OUTPUT}"
-        COMMAND ${CMAKE_COMMAND} -E make_directory "${_cpp_core_ast_json_dir}"
-        COMMAND
-            ${CMAKE_COMMAND}
-            -DCPP_CORE_AST_CLANGXX=${_cpp_core_ast_clangxx}
-            -DCPP_CORE_AST_INCLUDE_DIR=${CMAKE_CURRENT_SOURCE_DIR}/include
-            -DCPP_CORE_AST_OUTPUT=${CPP_CORE_AST_JSON_OUTPUT}
-            -DCPP_CORE_AST_SOURCE=${_cpp_core_ast_wrapper}
-            -DCPP_CORE_AST_STANDARD=${CMAKE_CXX_STANDARD}
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/export_ast_json.cmake
-        DEPENDS "${_cpp_core_ast_wrapper}" ${_cpp_core_ast_headers}
-        COMMENT "Exporting FFI header AST JSON with clang++"
-        VERBATIM
-    )
-
-    add_custom_command(
-        OUTPUT "${CPP_CORE_AST_SLIM_JSON_OUTPUT}"
-        COMMAND ${CMAKE_COMMAND} -E make_directory "${_cpp_core_ast_slim_json_dir}"
-        COMMAND
-            "${Python3_EXECUTABLE}"
-            "${CMAKE_CURRENT_SOURCE_DIR}/tools/clang_ast_to_ffi_json.py"
-            --input "${CPP_CORE_AST_JSON_OUTPUT}"
-            --output "${CPP_CORE_AST_SLIM_JSON_OUTPUT}"
-            --source-root "${CMAKE_CURRENT_SOURCE_DIR}"
-            --public-header "cpp_core/serial.h"
-        DEPENDS
-            "${CPP_CORE_AST_JSON_OUTPUT}"
-            "${CMAKE_CURRENT_SOURCE_DIR}/tools/clang_ast_to_ffi_json.py"
-        COMMENT "Reducing clang AST JSON to compact FFI API metadata"
-        VERBATIM
-    )
-
-    add_custom_target(cpp_core_ast_raw_json DEPENDS "${CPP_CORE_AST_JSON_OUTPUT}")
-    add_custom_target(cpp_core_ast_slim_json DEPENDS "${CPP_CORE_AST_SLIM_JSON_OUTPUT}")
-endif()
-
 # Install rules --------------------------------------------------------------
 include(GNUInstallDirs)
 
@@ -185,14 +86,6 @@ install(
     DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
 )
 
-if(CPP_CORE_ENABLE_AST_EXPORT)
-    install(
-        FILES "${CPP_CORE_AST_SLIM_JSON_OUTPUT}"
-        DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/cpp_core
-        OPTIONAL
-    )
-endif()
-
 # CMake package configuration ------------------------------------------------
 include(CMakePackageConfigHelpers)
 

README.md

@@ -86,22 +86,6 @@ The CMake project exports the package target and also builds these relevant targ
 - `cpp_core::cpp_core`: header-only interface target
 - `cpp_core_compile_tests`: compile-time validation target when testing is enabled
 
-Optional FFI AST export:
-
-```sh
-cmake -S . -B build -G Ninja -DCMAKE_TOOLCHAIN_FILE=cmake/gcc-toolchain.cmake -DCPP_CORE_ENABLE_AST_EXPORT=ON
-cmake --build build --target cpp_core_ast_slim_json
-```
-
-- The project still configures with GCC; the AST export itself invokes `clang++` separately
-- The current FFI generation workflow is validated with `clang++ 22.1.4` (`Fedora 22.1.4-1.fc44`)
-- `cpp_core_ast_raw_json` builds only the raw clang AST dump
-- Requires `clang++` on `PATH` or `-DCPP_CORE_AST_CLANGXX=/path/to/clang++`
-- Requires a Python 3 interpreter for the slim metadata reduction step
-- Writes the combined FFI header AST JSON to `build/ast/cpp_core_ffi_ast.json`
-- Writes compact, ship-friendly FFI metadata to `build/ast/cpp_core_ffi_api.json`
-- Exports the `#include <cpp_core/serial.h>` surface intended for downstream FFI adapter generation
-
 ## ABI Surface
 
 The main aggregated interface lives in: