cmake_minimum_required(VERSION 3.17 FATAL_ERROR)
project(GeminiServer CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_CXX_COMPILER_LAUNCHER ccache)

find_package(Boost REQUIRED COMPONENTS system program_options)
find_package(OpenSSL REQUIRED)
find_package(OpenMP REQUIRED)
include_directories(${Boost_INCLUDE_DIR} ${OpenSSL_INCLUDE_DIR})

set(COMPILE_DEFINITIONS
	$<$<CONFIG:DEBUG>:_LIBCPP_DEBUG>
	BOOST_ASIO_NO_DEPRECATED
	BOOST_ASIO_NO_TS_EXECUTORS
	#[[_FORTIFY_SOURCE=2]]
	)

set(COMPILE_FLAGS
	-pipe
	-march=skylake # change to native or your architecture.
	-mtune=skylake # same as above
	-mrdseed # be careful about this, this is linked to the x86 architecture.
	-mrdrnd # same as above
	-stdlib=libc++
	-Wpedantic
	-Wall
	-Wextra
	-Wmove
	-Wopenmp
	-funroll-loops
	-flto=thin
	-fwhole-program-vtables
	-fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
	)
set(LINKER_OPTIONS
	-Wl,--sort-common,--as-needed
	-stdlib=libc++
	-flto=thin
	-fwhole-program-vtables
	-fuse-ld=gold
	)

set(LINKER_FLAGS
	jemalloc
	${Boost_LIBRARIES}
	OpenSSL::SSL
	OpenMP::OpenMP_CXX
	)

file(GLOB HEADERS includes/*.hpp)

set(FILES
	main.cpp
	src/network.cpp
	include/information.hpp
	src/cache_files.cpp
	include/cache_files.hpp
	src/simdjson.cpp
	include/simdjson.h
	include/configuration.hpp src/configuration.cpp)

# options for spdlog
set(SPDLOG_ENABLE_PCH ON CACHE BOOL "Build static or shared library using precompiled header to speed up compilation time")
set(SPDLOG_BUILD_WARNINGS ON CACHE BOOL "Enable compiler warnings")
set(SPDLOG_FMT_EXTERNAL ON CACHE BOOL "Use external fmt library instead of bundled")
set(SPDLOG_PREVENT_CHILD_FD ON CACHE BOOL "Prevent from child processes to inherit log file descriptors")
set(SPDLOG_NO_THREAD_ID ON CACHE BOOL "prevent spdlog from querying the thread id on each log call if thread id is not needed")
set(SPDLOG_NO_TLS ON CACHE BOOL "prevent spdlog from using thread local storage")
set(SPDLOG_NO_ATOMIC_LEVELS ON CACHE BOOL "prevent spdlog from using of std::atomic log levels (use only if your code never modifies log levels concurrently")

add_subdirectory(external/spdlog EXCLUDE_FROM_ALL)
target_compile_definitions(spdlog PRIVATE ${COMPILE_DEFINITIONS})
target_compile_options(spdlog PRIVATE ${COMPILE_FLAGS})
target_link_options(spdlog PRIVATE ${LINKER_OPTIONS})
# end

add_executable(GeminiServer ${FILES})
target_precompile_headers(GeminiServer PRIVATE ${HEADERS})
target_compile_definitions(GeminiServer PRIVATE ${COMPILE_DEFINITIONS})
target_compile_options(GeminiServer PRIVATE ${COMPILE_FLAGS})
target_link_options(GeminiServer PRIVATE ${LINKER_OPTIONS})
target_link_libraries(GeminiServer ${LINKER_FLAGS} spdlog)