cmake_minimum_required(VERSION 3.20)
cmake_policy(SET CMP0048 NEW)

set(DTL_VERSION 2.01)

project(
  dtl
  VERSION ${DTL_VERSION}
)

include(CheckIncludeFile)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

check_include_file(unistd.h HAVE_UNISTD_H)
if(HAVE_UNISTD_H)
  add_definitions(-DHAVE_UNISTD_H)
endif()

configure_file(
  ${CMAKE_CURRENT_SOURCE_DIR}/include/dtl/variables.hpp.in
  ${CMAKE_CURRENT_SOURCE_DIR}/include/dtl/variables.hpp
  @ONLY
)

include_directories(BEFORE ${CMAKE_CURRENT_SOURCE_DIR}/include)

option(DTL_ENABLE_TESTING "Enable DTL unit tests" OFF)
if(DTL_ENABLE_TESTING)
  include(test/CMakeLists.txt)
endif()

option(DTL_ENABLE_EXAMPLES "Enable DTL examples" OFF)
if(DTL_ENABLE_EXAMPLES)
  include(examples/CMakeLists.txt)
endif()

install(
  DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/
  DESTINATION include
  FILES_MATCHING PATTERN "*.hpp"
)