cmake_minimum_required(VERSION 3.24)
project(wikideck_randomx LANGUAGES C CXX)

include(FetchContent)
# Immutable v1.2.1 pin; never follow a branch or a moving tag.
FetchContent_Declare(randomx
  GIT_REPOSITORY https://github.com/tevador/RandomX.git
  GIT_TAG 102f8acf90a7649ada410de5499a7ec62e49e1da
  GIT_SHALLOW FALSE
  GIT_SUBMODULES ""
  EXCLUDE_FROM_ALL
)
# Upstream still declares CMake 3.5 compatibility; support CMake 4 as well.
set(CMAKE_POLICY_VERSION_MINIMUM 3.5)
set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build static dependencies" FORCE)
FetchContent_MakeAvailable(randomx)
# v1.2.1 has no upstream BUILD_TESTING switch. Exclude its tools explicitly.
set_property(DIRECTORY "${randomx_SOURCE_DIR}" PROPERTY EXCLUDE_FROM_ALL TRUE)
foreach(tool randomx-tests randomx-codegen randomx-benchmark)
  set_target_properties(${tool} PROPERTIES EXCLUDE_FROM_ALL TRUE)
endforeach()
# Enforce W^X for the upstream cache JIT as well as our VM JIT.
target_compile_definitions(randomx PRIVATE RANDOMX_FORCE_SECURE)

add_executable(wikideck-randomx randomx-engine.cpp)
target_compile_features(wikideck-randomx PRIVATE cxx_std_17)
set_target_properties(wikideck-randomx PROPERTIES CXX_EXTENSIONS OFF
  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}")
foreach(config DEBUG RELEASE RELWITHDEBINFO MINSIZEREL)
  set_target_properties(wikideck-randomx PROPERTIES
    RUNTIME_OUTPUT_DIRECTORY_${config} "${CMAKE_BINARY_DIR}")
endforeach()
target_include_directories(wikideck-randomx PRIVATE "${randomx_SOURCE_DIR}/src")
target_link_libraries(wikideck-randomx PRIVATE randomx)
if(MSVC)
  target_compile_options(wikideck-randomx PRIVATE /W4 /GS)
else()
  target_compile_options(wikideck-randomx PRIVATE
    -Wall -Wextra -Wpedantic -Wconversion -Wformat=2 -Wformat-security
    -fstack-protector-strong)
endif()

option(WIKIDECK_RANDOMX_TESTS "Enable opt-in native known-vector test (256 MiB)" OFF)
if(WIKIDECK_RANDOMX_TESTS)
  enable_testing()
  add_test(NAME randomx-upstream-vector COMMAND wikideck-randomx --self-test)
  set_tests_properties(randomx-upstream-vector PROPERTIES TIMEOUT 120)
endif()