############################################################################
# Copyright (c) 2016, Johan Mabille, Sylvain Corlay and Wolf Vollprecht    #
#                                                                          #
# Distributed under the terms of the BSD 3-Clause License.                 #
#                                                                          #
# The full license is in the file LICENSE, distributed with this software. #
############################################################################

cmake_minimum_required(VERSION 3.1)

if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
    project(xsimd-benchmark)

    find_package(xsimd REQUIRED CONFIG)
    set(XSIMD_INCLUDE_DIR ${xsimd_INCLUDE_DIR})
endif ()

message(STATUS "Forcing tests build type to Release")
set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)

include(CheckCXXCompilerFlag)

string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE)

if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Intel")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native -Wunused-parameter -Wextra -Wreorder -Wconversion")
    CHECK_CXX_COMPILER_FLAG("-std=c++11" HAS_CPP11_FLAG)

    if (HAS_CPP11_FLAG)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    else()
        message(FATAL_ERROR "Unsupported compiler -- xsimd requires C++11 support!")
    endif()
endif()

if(MSVC)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc /MP /bigobj")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:AVX2")
    set(CMAKE_EXE_LINKER_FLAGS /MANIFEST:NO)
    foreach(flag_var
            CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
            CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
        string(REPLACE "/MD" "-MT" ${flag_var} "${${flag_var}}")
    endforeach()
endif()

include_directories(${XSIMD_INCLUDE_DIR})

set(XSIMD_BENCHMARK
    main.cpp
    xsimd_benchmark.hpp
)

set(XSIMD_BENCHMARK_TARGET benchmark_xsimd)
add_executable(${XSIMD_BENCHMARK_TARGET} EXCLUDE_FROM_ALL ${XSIMD_BENCHMARK} ${XSIMD_HEADERS})

add_custom_target(xbenchmark COMMAND benchmark_xsimd DEPENDS ${XSIMD_BENCHMARK_TARGET})
