CMakeLists.txt

cmake_minimum_required(VERSION 3.0.0)
project(unconstexpr VERSION 0.1.0)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED 20)

if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
    # require at least gcc 4.8
    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.1)
        message(FATAL_ERROR "GCC version must be at least 9.1!")
    endif()
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
    # require at least clang 3.2
    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
        message(FATAL_ERROR "Clang version must be at least 9.0!")
    endif()
else()
    message(WARNING "You are using an unsupported compiler! Compilation has only been tested with Clang and GCC.")
endif()

add_library(unconstexpr INTERFACE)
target_include_directories(unconstexpr INTERFACE include/)

INSTALL (
    DIRECTORY ${CMAKE_SOURCE_DIR}/include/unconstexpr/
    DESTINATION include/unconstexpr
    FILES_MATCHING PATTERN "*.h*")

enable_testing()
add_subdirectory(tests)

set(CPACK_PROJECT_NAME ${PROJECT_NAME})
set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
include(CPack)