cmake_minimum_required(VERSION 3.20)
set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)

set(EMSCRIPTEN_ROOT $ENV{EMSDK})
if(NOT EMSCRIPTEN_ROOT)
  set(EMSCRIPTEN_ROOT /usr/lib/emscripten)
endif()

set(EMSCRIPTEN_ROOT
    "${EMSCRIPTEN_ROOT}"
    CACHE PATH "Emscripten SDK path")

set(CMAKE_TOOLCHAIN_FILE
    "${EMSCRIPTEN_ROOT}/cmake/Modules/Platform/Emscripten.cmake"
    CACHE FILEPATH "Emscripten toolchain file")

project(ecgsyn.js)

option(BUILD_SHARED_LIBS "Build shared libraries" OFF)

set(CMAKE_C_STANDARD 99)
set(CMAKE_CXX_STANDARD 20)

set(PFFFT_USE_TYPE_FLOAT
    OFF
    CACHE BOOL "activate pffft float" FORCE)

include_directories(BEFORE SYSTEM compat)
add_compile_options(-flto -msimd128 -mavx)
add_link_options(-flto)

add_subdirectory(mini-odeint EXCLUDE_FROM_ALL)
add_subdirectory(pffft EXCLUDE_FROM_ALL)

add_executable(ecgsyn ecgsyn.cpp)
target_compile_options(ecgsyn PRIVATE)
target_link_options(
  ecgsyn
  PRIVATE
  -flto
  -sEXPORTED_FUNCTIONS=_ecgsyn
  --no-entry
  -sSTRICT
  -sNO_ASSERTIONS
  -sNO_FILESYSTEM
  -sMALLOC=emmalloc)
target_link_libraries(ecgsyn PRIVATE PFFFT)
set_target_properties(ecgsyn PROPERTIES SUFFIX ".wasm")