CMakeLists.txt

# Copyright (c) 2018–2021 SplineLib
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
# documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS
# OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

cmake_minimum_required(VERSION 3.16 FATAL_ERROR)

# Project
project(SplineLib VERSION 1.0.0 LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 20)
set(namespace "${PROJECT_NAME}::")
set(targets_export_name "${PROJECT_NAME}Targets")
option(SHARED "Build shared library" ON)
option(GOOGLETEST "Build with GoogleTest" ON)

# Setup
set(include_install_directory "include")
set(include_install_directory_headers "${include_install_directory}/${PROJECT_NAME}")
set(INCLUDE_DIRECTORIES $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
                        $<INSTALL_INTERFACE:${include_install_directory_headers}>)
set(library_install_directory "lib")
set(executable_install_directory "bin")
set(configuration_install_directory "lib/cmake/${PROJECT_NAME}")

# Compilation
if(NOT CMAKE_BUILD_TYPE)
    set(CMAKE_BUILD_TYPE Debug)
endif()
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
    set(OPTIMIZATION_FLAGS $<$<NOT:$<CONFIG:Debug>>:-O3 -march=native>)
    set(PARALLELIZATION_FLAGS)
    set(RUNTIME_CHECKS_DEBUG)
    set(WARNING_FLAGS -Wall -Wextra -Wmost -Wextra -Wpedantic -Wunreachable-code -Wshadow -Wfloat-equal -Weffc++
                       $<$<NOT:$<CONFIG:Debug>>:-Wno-unused-parameter -Wno-unused-variable>
                       $<$<BOOL:${GOOGLETEST}>:-Wno-gnu-zero-variadic-macro-arguments>)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
    set(OPTIMIZATION_FLAGS $<$<NOT:$<CONFIG:Debug>>:-O3 -march=native>)
    set(PARALLELIZATION_FLAGS)
    set(RUNTIME_CHECKS_DEBUG)
    set(WARNING_FLAGS -Wall -Wextra -Wpedantic -Wzero-as-null-pointer-constant $<$<NOT:$<CONFIG:Debug>>:-Wno-unused>)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
    set(OPTIMIZATION_FLAGS -fast)
    set(PARALLELIZATION_FLAGS -vec -parallel)
    set(RUNTIME_CHECKS_DEBUG -fp-trap=all -fp-trap-all=all -ftrapuv)
    set(WARNING_FLAGS -Wall -Wextra -Wcheck -Weffc++)
else()
    message(ERROR "Unsupported compiler: ${CMAKE_CXX_COMPILER_ID}")
endif()
set(COMPILE_DEFINITIONS $<$<BOOL:${SHARED}>:SPLINELIB_SHARED> $<$<BOOL:${GOOGLETEST}>:SPLINELIB_GOOGLETEST>)
set(COMPILE_OPTIONS ${OPTIMIZATION_FLAGS} 
                    $<IF:$<CONFIG:Release>,${PARALLELIZATION_FLAGS},${RUNTIME_CHECKS_DEBUG}> ${WARNING_FLAGS})
message(STATUS "Compile using ${CMAKE_CXX_COMPILER_ID} compiler!")
set(CMAKE_DEBUG_POSTFIX "d")

if(CMAKE_BUILD_TYPE MATCHES Debug)
    message(STATUS "Build debug!")
else()
    message(STATUS "Build release!")
endif()
if(SHARED)
    message(STATUS "Build shared!")
    set (BUILD_SHARED_LIBS ON)
else()
    message(STATUS "Build static!")
    set (BUILD_SHARED_LIBS OFF)
endif()

# Content
find_package(PkgConfig REQUIRED QUIET)
add_subdirectory(Sources)
if(GOOGLETEST)
    message(STATUS "Build tests!")
    enable_testing()
    add_subdirectory(Tests)
else()
    message(STATUS "No tests!")
endif()
add_subdirectory(Tools)

# Packaging
set(generated_directory ${CMAKE_CURRENT_BINARY_DIR}/Generated)
set(version_configuration ${generated_directory}/${PROJECT_NAME}ConfigVersion.cmake)
set(project_configuration ${generated_directory}/${PROJECT_NAME}Config.cmake)
include(CMakePackageConfigHelpers)
configure_package_config_file(CMake/config.cmake.in ${project_configuration}
                              INSTALL_DESTINATION ${configuration_install_directory})
write_basic_package_version_file(${version_configuration} COMPATIBILITY SameMajorVersion)
install(FILES ${project_configuration} ${version_configuration} DESTINATION ${configuration_install_directory})
install(EXPORT ${targets_export_name} NAMESPACE ${namespace} DESTINATION ${configuration_install_directory})