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CMakeLists.txt
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CMakeLists.txt
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#
# This file is part of
#
# CTBignum
#
# C++ Library for Compile-Time and Run-Time Multi-Precision and Modular Arithmetic
#
#
# This file is distributed under the Apache License, Version 2.0. See the LICENSE
# file for details.
cmake_minimum_required(VERSION 3.0.0)
# This cmake file was inspired by that of nlohmann/json
##
## PROJECT
## name and version
##
project(ctbignum VERSION 0.1 LANGUAGES CXX)
##
## INCLUDE
##
##
include(ExternalProject)
## External dependencies
find_package(Boost 1.61 REQUIRED)
if(Boost_FOUND)
include_directories(${Boost_INCLUDE_DIRS})
endif()
##
## OPTIONS
##
option(default_cxx_standard "C++ standard" 20)
set(CMAKE_CXX_STANDARD default_cxx_standard)
option(CTBIGNUM_BuildTests "Build the unit tests when BUILD_TESTING is enabled." ON)
option(CTBIGNUM_BuildBenchmarks "Build the benchmarks." OFF)
##
## CONFIGURATION
##
set(CTBIGNUM_TARGET_NAME ${PROJECT_NAME})
set(CTBIGNUM_CONFIG_INSTALL_DIR "lib/cmake/${PROJECT_NAME}")
set(CTBIGNUM_INCLUDE_INSTALL_DIR "include")
set(CTBIGNUM_TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
set(CTBIGNUM_CMAKE_CONFIG_TEMPLATE "cmake/config.cmake.in")
set(CTBIGNUM_CMAKE_CONFIG_DIR "${CMAKE_CURRENT_BINARY_DIR}/cmake_config")
set(CTBIGNUM_CMAKE_VERSION_CONFIG_FILE "${CTBIGNUM_CMAKE_CONFIG_DIR}/${PROJECT_NAME}ConfigVersion.cmake")
set(CTBIGNUM_CMAKE_PROJECT_CONFIG_FILE "${CTBIGNUM_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Config.cmake")
set(CTBIGNUM_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/include/")
set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
## Append compiler flag to silence compiler warning for GNU extension
if (CMAKE_COMPILER_IS_GNUCXX OR (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang"))
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-gnu-string-literal-operator-template")
endif()
##
## TARGET
## create target and add include path
##
add_library(${CTBIGNUM_TARGET_NAME} INTERFACE)
target_include_directories(
${CTBIGNUM_TARGET_NAME}
INTERFACE
$<BUILD_INTERFACE:${CTBIGNUM_INCLUDE_BUILD_DIR}>
$<INSTALL_INTERFACE:include>
)
##
## TESTS
## create and configure the unit test target
##
include(CTest) #adds option BUILD_TESTING (default ON)
if(BUILD_TESTING AND CTBIGNUM_BuildTests)
enable_testing()
add_subdirectory(test)
endif()
if(CTBIGNUM_BuildBenchmarks)
add_subdirectory(benchmarks)
endif()
##
## INSTALL
## install header files, generate and install cmake config files for find_package()
##
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
${CTBIGNUM_CMAKE_VERSION_CONFIG_FILE} COMPATIBILITY SameMajorVersion
)
configure_package_config_file(
${CTBIGNUM_CMAKE_CONFIG_TEMPLATE}
${CTBIGNUM_CMAKE_PROJECT_CONFIG_FILE}
INSTALL_DESTINATION ${CTBIGNUM_CONFIG_INSTALL_DIR}
)
install(
DIRECTORY ${CTBIGNUM_INCLUDE_BUILD_DIR}
DESTINATION ${CTBIGNUM_INCLUDE_INSTALL_DIR}
)
install(
FILES ${CTBIGNUM_CMAKE_PROJECT_CONFIG_FILE} ${CTBIGNUM_CMAKE_VERSION_CONFIG_FILE}
DESTINATION ${CTBIGNUM_CONFIG_INSTALL_DIR}
)
install(
TARGETS ${CTBIGNUM_TARGET_NAME}
EXPORT ${CTBIGNUM_TARGETS_EXPORT_NAME}
INCLUDES DESTINATION ${CTBIGNUM_INCLUDE_INSTALL_DIR}
)
install(
EXPORT ${CTBIGNUM_TARGETS_EXPORT_NAME}
DESTINATION ${CTBIGNUM_CONFIG_INSTALL_DIR}
)