cmake_minimum_required(VERSION 3.9) # CMP0069 NEW
include(GNUInstallDirs)

message(STATUS "cmake version ${CMAKE_VERSION}")
if (NOT CMAKE_BUILD_TYPE)
  message(STATUS "No build type selected, default to Release")
  set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)
endif()

project(simdjson
  DESCRIPTION "Parsing gigabytes of JSON per second"
  LANGUAGES CXX C
)

set(PROJECT_VERSION_MAJOR 0)
set(PROJECT_VERSION_MINOR 3)
set(PROJECT_VERSION_PATCH 1)
set(SIMDJSON_LIB_VERSION "0.3.1" CACHE STRING "simdjson library version")
set(SIMDJSON_LIB_SOVERSION "1" CACHE STRING "simdjson library soversion")

if(MSVC)
  option(SIMDJSON_BUILD_STATIC "Build a static library" ON) # turning it on disables the production of a dynamic library
  option(SIMDJSON_COMPETITION "Compile competitive benchmarks" OFF)
else()
  option(SIMDJSON_BUILD_STATIC "Build a static library" OFF) # turning it on disables the production of a dynamic library
  option(SIMDJSON_COMPETITION "Compile competitive benchmarks" ON)
endif()
option(SIMDJSON_GOOGLE_BENCHMARKS "compile the Google Benchmark benchmarks" OFF)

set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/tools/cmake")

# We compile tools, tests, etc. with C++ 17. Override yourself if you need on a target.
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_MACOSX_RPATH OFF)
set(CMAKE_THREAD_PREFER_PTHREAD ON)
set(THREADS_PREFER_PTHREAD_FLAG ON)

# LTO seems to create all sorts of fun problems. Let us
# disable temporarily.
#include(CheckIPOSupported)
#check_ipo_supported(RESULT ltoresult)
#if(ltoresult)
#  set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
#endif()

#
# Flags used by exes and by the simdjson library (project-wide flags)
#
add_library(simdjson-flags INTERFACE)
if(MSVC)
  target_compile_options(simdjson-flags INTERFACE /nologo /D_CRT_SECURE_NO_WARNINGS)
  target_compile_options(simdjson-flags INTERFACE /W3 /wd4005 /wd4996 /wd4267 /wd4244 /wd4113)
else()
  target_compile_options(simdjson-flags INTERFACE -fPIC)
  target_compile_options(simdjson-flags INTERFACE -Wall -Wextra -Wsign-compare -Wshadow -Wwrite-strings -Wpointer-arith -Winit-self)
endif()

# Optional flags
option(SIMDJSON_IMPLEMENTATION_HASWELL "Include the haswell implementation" ON)
if(NOT SIMDJSON_IMPLEMENTATION_HASWELL)
  target_compile_definitions(simdjson-flags INTERFACE SIMDJSON_IMPLEMENTATION_HASWELL=0)
endif()
option(SIMDJSON_IMPLEMENTATION_WESTMERE "Include the westmere implementation" ON)
if(NOT SIMDJSON_IMPLEMENTATION_WESTMERE)
  target_compile_definitions(simdjson-flags INTERFACE SIMDJSON_IMPLEMENTATION_WESTMERE=0)
endif()
option(SIMDJSON_IMPLEMENTATION_ARM64 "Include the arm64 implementation" ON)
if(NOT SIMDJSON_IMPLEMENTATION_ARM64)
  target_compile_definitions(simdjson-flags INTERFACE SIMDJSON_IMPLEMENTATION_ARM64=0)
endif()
option(SIMDJSON_IMPLEMENTATION_FALLBACK "Include the fallback implementation" ON)
if(NOT SIMDJSON_IMPLEMENTATION_FALLBACK)
  target_compile_definitions(simdjson-flags INTERFACE SIMDJSON_IMPLEMENTATION_FALLBACK=0)
endif()

option(SIMDJSON_EXCEPTIONS "Enable simdjson's exception-throwing interface" ON)
if(NOT SIMDJSON_EXCEPTIONS)
  message(STATUS "simdjson exception interface turned off. Code that does not check error codes will not compile.")
  target_compile_definitions(simdjson-flags INTERFACE SIMDJSON_EXCEPTIONS=0)
endif()

option(SIMDJSON_ENABLE_THREADS "Enable threaded operation" ON)
if(SIMDJSON_ENABLE_THREADS)
  find_package(Threads REQUIRED)
  target_link_libraries(simdjson-flags INTERFACE Threads::Threads)
endif()

option(SIMDJSON_SANITIZE "Sanitize addresses" OFF)
if(SIMDJSON_SANITIZE)
  # Not sure which 
  target_compile_options(simdjson-flags INTERFACE -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined -fno-sanitize-recover=all)
  target_link_libraries(simdjson-flags INTERFACE -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined -fno-sanitize-recover=all)

  # Ubuntu bug for GCC 5.0+ (safe for all versions)
  if (CMAKE_COMPILER_IS_GNUCC)
    target_link_libraries(simdjson-flags INTERFACE -fuse-ld=gold)
  endif()
endif()

# prevent shared libraries from depending on Intel provided libraries
if(${CMAKE_C_COMPILER_ID} MATCHES "Intel") # icc / icpc
  set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -static-intel")
endif()

# Workaround for https://gitlab.kitware.com/cmake/cmake/issues/15415#note_633938:
function(export_private_library NAME)
  install(TARGETS ${NAME}
    EXPORT ${NAME}-config
    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
  )
  install(EXPORT ${NAME}-config
    FILE ${NAME}-config.cmake
    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/simdjson-private
  )
endfunction()

export_private_library(simdjson-flags)

#
# Create the top level simdjson library (must be done at this level to use both src/ and include/
# directories)
#
add_subdirectory(include)
add_subdirectory(src)

#
# Compile tools / tests / benchmarks
#
enable_testing()

add_library(test-data INTERFACE)
target_compile_definitions(test-data INTERFACE SIMDJSON_TEST_DATA_DIR="${CMAKE_CURRENT_SOURCE_DIR}/jsonchecker/")
target_compile_definitions(test-data INTERFACE SIMDJSON_BENCHMARK_DATA_DIR="${CMAKE_CURRENT_SOURCE_DIR}/jsonexamples/")

add_subdirectory(windows)
add_subdirectory(dependencies)
add_subdirectory(tests)
add_subdirectory(examples)
add_subdirectory(tools)
add_subdirectory(benchmark)

# for fuzzing, read the comments in the fuzz/CMakeLists.txt file
option(ENABLE_FUZZING "enable building the fuzzers" ON)
if(ENABLE_FUZZING)
  add_subdirectory(fuzz)
endif()

#
# CPack
#
set(CPACK_PACKAGE_VENDOR "Daniel Lemire")
set(CPACK_PACKAGE_CONTACT "lemire@gmail.com")
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Parsing gigabytes of JSON per second")
set(CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
set(CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
set(CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
set(CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_SOURCE_DIR}/README.md")

set(CPACK_RPM_PACKAGE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")

set(CPACK_SOURCE_GENERATOR "TGZ;ZIP")

include(CPack)