cossacks-ce/CMakeLists.txt at dev · TheFlashBold/cossacks-ce · GitHub

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cmake_minimum_required(VERSION 3.20)
project(CossacksCE VERSION 1.0.0 LANGUAGES C CXX)

# C++ standard
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)

# Options
option(COSSACKS_BUILD_TESTING "Build with debug symbols and TRACE macros" OFF)
option(COSSACKS_USE_WASM_SIMD "Enable WebAssembly SIMD" OFF)

# Platform definitions (Emscripten-only)
include(cmake/Platform.cmake)

# Output directories
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)

message(STATUS "Building for WebAssembly (Emscripten)")

# Emscripten-specific compiler flags
# Use -fms-extensions for anonymous struct support in unions
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s USE_SDL=3 -fms-extensions")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -s USE_SDL=3 -fms-extensions")

# Memory configuration
set(EMSCRIPTEN_LINK_FLAGS "-s INITIAL_MEMORY=268435456")  # 256MB
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s ALLOW_MEMORY_GROWTH=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s MAXIMUM_MEMORY=1073741824")  # 1GB max

# File system support
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s FORCE_FILESYSTEM=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -lidbfs.js")

# SDL3 and async support
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s ASYNCIFY=1")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s USE_SDL=3")
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s USE_SDL_IMAGE=3")

# Export functions for JavaScript interop
set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s EXPORTED_RUNTIME_METHODS=['ccall','cwrap']")

# WebAssembly SIMD (optional, for performance)
if(COSSACKS_USE_WASM_SIMD)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msimd128")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msimd128")
endif()

# Debug/Release specific flags
if(COSSACKS_BUILD_TESTING)
    # Disable assertions and SAFE_HEAP - legacy code uses #pragma pack(1) extensively
    set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s ASSERTIONS=0")
    set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s SAFE_HEAP=0")
    set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -g")
else()
    set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -O3")
    set(EMSCRIPTEN_LINK_FLAGS "${EMSCRIPTEN_LINK_FLAGS} -s ASSERTIONS=0")
endif()

# Add subdirectories for libraries and main executable
add_subdirectory(src/CommCore)
add_subdirectory(src/IChat)
add_subdirectory(src/IntExplorer)
add_subdirectory(src/ai/Algeria)
add_subdirectory(src/Main)

# Installation rules (web files)
install(FILES
    ${CMAKE_BINARY_DIR}/bin/dmcr.html
    ${CMAKE_BINARY_DIR}/bin/dmcr.js
    ${CMAKE_BINARY_DIR}/bin/dmcr.wasm
    ${CMAKE_SOURCE_DIR}/web/webrtc.js
    ${CMAKE_SOURCE_DIR}/web/favicon.ico
    DESTINATION web
)