# Minimal version of CMake
cmake_minimum_required (VERSION 3.1)

# Build type
if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
    message(STATUS "Setting build type to 'Debug' as none was specified.")
    set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)
    # Set the possible values of build type for cmake-gui
    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release")
endif ()

# Define project name
project (GPU_Bruteforcing)

set (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/")

find_package( OpenCL REQUIRED )

include_directories( ${OPENCL_INCLUDE_DIR} )

# Source code of application
set (opencl_src main.c)

# Compiler flags
if (CMAKE_COMPILER_IS_GNUCC)
    set (CMAKE_CXX_FLAGS "-D_REETRANT -Wall -Wextra -pedantic -Wno-long-long")
    if (CMAKE_BUILD_TYPE STREQUAL "Debug")
        set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ggdb -O0")
    elseif( CMAKE_BUILD_TYPE STREQUAL "Release" )
        set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNDEBUG -O3 -fno-strict-aliasing")
    endif ()
endif (CMAKE_COMPILER_IS_GNUCC)

# Set up executable
add_executable (gpu ${opencl_src})
target_link_libraries(gpu ${OpenCL_LIBRARY})

add_custom_command(TARGET gpu PRE_BUILD COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_SOURCE_DIR}/kernel.cl ${CMAKE_CURRENT_BINARY_DIR}/kernel.cl)