mirror of
https://github.com/clockworklabs/SpacetimeDB.git
synced 2026-03-20 09:01:05 +08:00
52b6c66fa1
# Description of Changes This adds C++ server bindings (/crate/bindings-cpp) to allow writing C++ 20 modules. - Emscripten WASM build system integration with CMake - Macro-based code generation (SPACETIMEDB_TABLE, SPACETIMEDB_REDUCER, etc) - All SpacetimeDB types supported (primitives, Timestamp, Identity, Uuid, etc) - Product types via SPACETIMEDB_STRUCT - Sum types via SPACETIMEDB_ENUM - Constraints marked with FIELD* macros # API and ABI breaking changes None # Expected complexity level and risk 2 - Doesn't heavily impact any other areas but is complex macro C++ structure to support a similar developer experience, did have a small impact on init command # Testing - [x] modules/module-test-cpp - heavily tested every reducer - [x] modules/benchmarks-cpp - tested through the standalone (~6x faster than C#, ~6x slower than Rust) - [x] modules/sdk-test-cpp - [x] modules/sdk-test-procedure-cpp - [x] modules/sdk-test-view-cpp - [x] Wrote several test modules myself - [x] Quickstart smoketest [Currently in progress] - [ ] Write Blackholio C++ server module --------- Signed-off-by: Jason Larabie <jason@clockworklabs.io> Co-authored-by: clockwork-labs-bot <clockwork-labs-bot@users.noreply.github.com> Co-authored-by: Ryan <r.ekhoff@clockworklabs.io> Co-authored-by: John Detter <4099508+jdetter@users.noreply.github.com>
70 lines
2.3 KiB
CMake
70 lines
2.3 KiB
CMake
cmake_minimum_required(VERSION 3.16)
|
|
project(module-test-cpp)
|
|
|
|
set(CMAKE_CXX_STANDARD 20)
|
|
set(CMAKE_CXX_STANDARD_REQUIRED ON)
|
|
|
|
# Module source file
|
|
if(NOT DEFINED MODULE_SOURCE)
|
|
set(MODULE_SOURCE "src/lib.cpp")
|
|
endif()
|
|
|
|
# Output name
|
|
if(NOT DEFINED OUTPUT_NAME)
|
|
set(OUTPUT_NAME "lib")
|
|
endif()
|
|
|
|
# Set the path to the SpacetimeDB C++ library
|
|
set(SPACETIMEDB_CPP_LIBRARY_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../../crates/bindings-cpp")
|
|
|
|
# Create the module executable
|
|
add_executable(${OUTPUT_NAME} ${MODULE_SOURCE})
|
|
|
|
# Include directories
|
|
target_include_directories(${OUTPUT_NAME} PRIVATE
|
|
${SPACETIMEDB_CPP_LIBRARY_PATH}/include
|
|
)
|
|
|
|
if(CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
|
|
target_compile_options(${OUTPUT_NAME} PRIVATE -fno-exceptions -O2 -g0)
|
|
# Enable unstable features for transaction support
|
|
target_compile_definitions(${OUTPUT_NAME} PRIVATE SPACETIMEDB_UNSTABLE_FEATURES)
|
|
# Also define for the library so it includes unstable features
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DSPACETIMEDB_UNSTABLE_FEATURES")
|
|
endif()
|
|
|
|
|
|
# Link the SpacetimeDB library
|
|
add_subdirectory(${SPACETIMEDB_CPP_LIBRARY_PATH} ${CMAKE_CURRENT_BINARY_DIR}/spacetimedb_cpp_library)
|
|
target_link_libraries(${OUTPUT_NAME} PRIVATE spacetimedb_cpp_library)
|
|
|
|
# Emscripten specific settings
|
|
if(CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
|
|
# Export list as a single variable (no extra quoting per-platform)
|
|
set(EXPORTED_FUNCS "['_malloc','_free','___describe_module__','___call_reducer__','___call_procedure__','___call_view__','___call_view_anon__']")
|
|
|
|
# Produce a standalone .wasm (no JS harness) with no entry point
|
|
target_link_options(lib PRIVATE
|
|
"SHELL:-sSTANDALONE_WASM=1"
|
|
"SHELL:-sWASM=1"
|
|
"SHELL:--no-entry"
|
|
# Exports
|
|
"SHELL:-sEXPORTED_FUNCTIONS=${EXPORTED_FUNCS}"
|
|
# Keep this ON for correctness; you can flip to 0 temporarily to probe
|
|
"SHELL:-sERROR_ON_UNDEFINED_SYMBOLS=1"
|
|
# Trim runtime
|
|
"SHELL:-sFILESYSTEM=0"
|
|
"SHELL:-sDISABLE_EXCEPTION_CATCHING=1"
|
|
"SHELL:-sALLOW_MEMORY_GROWTH=0"
|
|
"SHELL:-sINITIAL_MEMORY=16MB"
|
|
"SHELL:-sSUPPORT_LONGJMP=0"
|
|
"SHELL:-sSUPPORT_ERRNO=0"
|
|
# C++20 and O2 at link step (Emscripten accepts them here too)
|
|
"SHELL:-std=c++20"
|
|
"SHELL:-O2"
|
|
"SHELL:-g0"
|
|
)
|
|
|
|
# Name the output lib.wasm
|
|
set_target_properties(lib PROPERTIES OUTPUT_NAME "lib" SUFFIX ".wasm")
|
|
endif() |