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cmake_minimum_required(VERSION 3.15)
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# set the project name and version
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project(Tutorial VERSION 1.0)
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set(CMAKE_DEBUG_POSTFIX d)
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add_library(tutorial_compiler_flags INTERFACE)
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target_compile_features(tutorial_compiler_flags INTERFACE cxx_std_11)
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# add compiler warning flags just when building this project via
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# the BUILD_INTERFACE genex
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set(gcc_like_cxx "$<COMPILE_LANG_AND_ID:CXX,ARMClang,AppleClang,Clang,GNU,LCC>")
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set(msvc_cxx "$<COMPILE_LANG_AND_ID:CXX,MSVC>")
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target_compile_options(tutorial_compiler_flags INTERFACE
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"$<${gcc_like_cxx}:$<BUILD_INTERFACE:-Wall;-Wextra;-Wshadow;-Wformat=2;-Wunused>>"
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"$<${msvc_cxx}:$<BUILD_INTERFACE:-W3>>"
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)
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# control where the static and shared libraries are built so that on windows
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# we don't need to tinker with the path to run the executable
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set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}")
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}")
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}")
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option(BUILD_SHARED_LIBS "Build using shared libraries" ON)
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if(APPLE)
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set(CMAKE_INSTALL_RPATH "@executable_path/../lib")
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elseif(UNIX)
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set(CMAKE_INSTALL_RPATH "$ORIGIN/../lib")
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endif()
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# configure a header file to pass the version number only
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configure_file(TutorialConfig.h.in TutorialConfig.h)
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# add the MathFunctions library
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add_subdirectory(MathFunctions)
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# add the executable
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add_executable(Tutorial tutorial.cxx)
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set_target_properties(Tutorial PROPERTIES DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
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target_link_libraries(Tutorial PUBLIC MathFunctions tutorial_compiler_flags)
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# add the binary tree to the search path for include files
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# so that we will find TutorialConfig.h
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target_include_directories(Tutorial PUBLIC
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"${PROJECT_BINARY_DIR}"
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)
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# add the install targets
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install(TARGETS Tutorial DESTINATION bin)
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install(FILES "${PROJECT_BINARY_DIR}/TutorialConfig.h"
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DESTINATION include
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)
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# enable testing
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enable_testing()
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# does the application run
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add_test(NAME Runs COMMAND Tutorial 25)
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# does the usage message work?
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add_test(NAME Usage COMMAND Tutorial)
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set_tests_properties(Usage
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PROPERTIES PASS_REGULAR_EXPRESSION "Usage:.*number"
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)
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# define a function to simplify adding tests
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function(do_test target arg result)
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add_test(NAME Comp${arg} COMMAND ${target} ${arg})
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set_tests_properties(Comp${arg}
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PROPERTIES PASS_REGULAR_EXPRESSION ${result}
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)
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endfunction()
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# do a bunch of result based tests
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do_test(Tutorial 4 "4 is 2")
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do_test(Tutorial 9 "9 is 3")
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do_test(Tutorial 5 "5 is 2.236")
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do_test(Tutorial 7 "7 is 2.645")
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do_test(Tutorial 25 "25 is 5")
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do_test(Tutorial -25 "-25 is (-nan|nan|0)")
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do_test(Tutorial 0.0001 "0.0001 is 0.01")
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# setup installer
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include(InstallRequiredSystemLibraries)
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set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/License.txt")
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set(CPACK_PACKAGE_VERSION_MAJOR "${Tutorial_VERSION_MAJOR}")
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set(CPACK_PACKAGE_VERSION_MINOR "${Tutorial_VERSION_MINOR}")
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set(CPACK_GENERATOR "TGZ")
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set(CPACK_SOURCE_GENERATOR "TGZ")
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include(CPack)
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# install the configuration targets
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install(EXPORT MathFunctionsTargets
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FILE MathFunctionsTargets.cmake
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DESTINATION lib/cmake/MathFunctions
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)
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include(CMakePackageConfigHelpers)
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# generate the config file that is includes the exports
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configure_package_config_file(${CMAKE_CURRENT_SOURCE_DIR}/Config.cmake.in
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"${CMAKE_CURRENT_BINARY_DIR}/MathFunctionsConfig.cmake"
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INSTALL_DESTINATION "lib/cmake/example"
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NO_SET_AND_CHECK_MACRO
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NO_CHECK_REQUIRED_COMPONENTS_MACRO
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)
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# generate the version file for the config file
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write_basic_package_version_file(
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"${CMAKE_CURRENT_BINARY_DIR}/MathFunctionsConfigVersion.cmake"
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VERSION "${Tutorial_VERSION_MAJOR}.${Tutorial_VERSION_MINOR}"
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COMPATIBILITY AnyNewerVersion
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)
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# install the configuration file
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install(FILES
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${CMAKE_CURRENT_BINARY_DIR}/MathFunctionsConfig.cmake
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DESTINATION lib/cmake/MathFunctions
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)
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# generate the export targets for the build tree
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# needs to be after the install(TARGETS ) command
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export(EXPORT MathFunctionsTargets
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FILE "${CMAKE_CURRENT_BINARY_DIR}/MathFunctionsTargets.cmake"
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)
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