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jchristophersonjchristopherson
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Add CMake support
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‎CMakeLists.txt‎

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# Master CMAKE Build Script
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cmake_minimum_required(VERSION 3.24)
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project(
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fftpack
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LANGUAGES Fortran
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VERSION 1.0.0
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)
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# Get helper macros and functions
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include("${PROJECT_SOURCE_DIR}/cmake/helper.cmake")
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# Confgiure everything
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add_subdirectory(configure)
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# Source
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add_subdirectory(src)
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add_fortran_library(
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${PROJECT_NAME}
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${PROJECT_INCLUDE_DIR}
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${CMAKE_INSTALL_INCLUDEDIR}
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${PROJECT_VERSION}
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${PROJECT_VERSION_MAJOR}
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${FFTPACK_SOURCES}
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)
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# Installation
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add_subdirectory(install)
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# Testing
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option(BUILD_TESTING "Build tests")
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include(CTest)
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message(STATUS "Build FFTPACK tests: ${BUILD_TESTING}")
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if (BUILD_TESTING)
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enable_testing()
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add_subdirectory(dependencies)
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add_subdirectory(test)
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endif()
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# Examples
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option(BUILD_FFTPACK_EXAMPLES "Build FFTPACK examples")
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message(STATUS "Build FFTPACK examples: ${BUILD_FFTPACK_EXAMPLES}")
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if (BUILD_FFTPACK_EXAMPLES)
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add_subdirectory(example)
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endif()

‎cmake/helper.cmake‎

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# helper.cmake
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#
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# A collection of macros and functions making life with CMake and Fortran a
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# bit simpler.
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# Use to include and export headers
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function(include_headers lib dir install_dir)
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target_include_directories(
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${lib}
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INTERFACE
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$<BUILD_INTERFACE:${dir}>
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$<INSTALL_INTERFACE:${install_dir}>
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)
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endfunction()
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# Use instead of add_library.
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function(add_fortran_library lib_name mod_dir include_install_dir version major)
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add_library(${lib_name} ${ARGN})
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set_target_properties(
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${lib_name}
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PROPERTIES
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POSITION_INDEPENDENT_CODE TRUE
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OUTPUT_NAME ${lib_name}
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VERSION ${version}
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SOVERSION ${major}
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Fortran_MODULE_DIRECTORY ${include_install_dir}
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)
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target_include_directories(
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${lib_name}
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PUBLIC
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$<BUILD_INTERFACE:${mod_dir}>
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$<INSTALL_INTERFACE:${include_install_dir}>
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)
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endfunction()
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# Installs the library
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function(install_library lib_name lib_install_dir bin_install_dir mod_dir install_dir)
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install(
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TARGETS ${lib_name}
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EXPORT ${lib_name}Targets
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RUNTIME DESTINATION ${bin_install_dir}
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LIBRARY DESTINATION ${lib_install_dir}
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ARCHIVE DESTINATION ${lib_install_dir}
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INCLUDES DESTINATION ${install_dir}/include
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)
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install(
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DIRECTORY ${mod_dir}
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DESTINATION ${install_dir}
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)
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endfunction()
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# Install the documentation files
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function(install_documentation doc_dir install_dir)
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install(
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DIRECTORY ${doc_dir}
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DESTINATION ${install_dir}
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)
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endfunction()
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# Links the supplied library
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function(link_library targ lib include_dir)
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target_link_libraries(${targ} ${lib})
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target_include_directories(${targ} PUBLIC $<BUILD_INTERFACE:${include_dir}>)
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endfunction()
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# ------------------------------------------------------------------------------
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# Helpful Macros
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macro(print_all_variables)
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message(STATUS "---------- CURRENTLY DEFINED VARIABLES -----------")
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get_cmake_property(varNames VARIABLES)
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foreach(varName ${varNames})
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message(STATUS ${varName} = ${${varName}})
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endforeach()
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message(STATUS "---------- END ----------")
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endmacro()

‎configure/CMakeLists.txt‎

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# Get the macros and functions we'll need
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include("${PROJECT_SOURCE_DIR}/cmake/helper.cmake")
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# Set a default build type if none was specified
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if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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message(STATUS "Setting build type to 'Release' as none was specified.")
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set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)
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# Set the possible values of build type for cmake-gui
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set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release")
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endif()
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# By default, static library
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option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
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# Export all symbols on Windows when building libraries
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set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
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# Utilize the GNU installation structure
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include(GNUInstallDirs)
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# Locate the local include directory
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set(PROJECT_INCLUDE_DIR ${PROJECT_BINARY_DIR}/include)
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set(PROJECT_INCLUDE_DIR ${PROJECT_INCLUDE_DIR} PARENT_SCOPE)

‎dependencies/CMakeLists.txt‎

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add_subdirectory(test-drive)
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set(test-drive_LIBRARY ${test-drive_LIBRARY} PARENT_SCOPE)
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set(test-drive_INCLUDE_DIR ${test-drive_INCLUDE_DIR} PARENT_SCOPE)

‎dependencies/test-drive/CMakeLists.txt‎

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# Get the macros and functions we'll need
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include("${PROJECT_SOURCE_DIR}/cmake/helper.cmake")
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include(FetchContent)
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# If found, use the installed version; else, import the library
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if (${test-drive_FOUND})
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# Inform the user of what's going on
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message(STATUS "TEST-DRIVE (${test-drive_VERSION}) library found.")
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# Get the mod file location
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get_target_property(test-drive_INCLUDE_DIR test-drive INTERFACE_INCLUDE_DIRECTORIES)
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else()
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# Inform the user of what's going on
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message(STATUS "TEST-DRIVE library not found. Downloading appropriate repository.")
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# Fetch the proper content
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FetchContent_Declare(
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test-drive
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GIT_TAG "origin/main"
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GIT_REPOSITORY "https://github.com/fortran-lang/test-drive"
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OVERRIDE_FIND_PACKAGE
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)
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FetchContent_MakeAvailable(test-drive)
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set(test-drive_INCLUDE_DIR ${test-drive_BINARY_DIR}/include)
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endif()
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# Make a parent-scope variable for the library
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set(test-drive_LIBRARY test-drive)
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set(test-drive_LIBRARY ${test-drive_LIBRARY} PARENT_SCOPE)
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# Make a parent-scope variable locating the include directory for test-drive
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set(test-drive_INCLUDE_DIR ${test-drive_INCLUDE_DIR} PARENT_SCOPE)

‎example/CMakeLists.txt‎

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add_executable(bench1 bench1.f90)
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target_link_libraries(bench1 fftpack)

‎install/CMakeLists.txt‎

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# Get the macros and functions we'll need
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include("${PROJECT_SOURCE_DIR}/cmake/helper.cmake")
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include(CMakePackageConfigHelpers)
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# Install the library and necessary include files
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install_library(
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${PROJECT_NAME}
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${CMAKE_INSTALL_LIBDIR}
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${CMAKE_INSTALL_BINDIR}
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${PROJECT_INCLUDE_DIR}
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${CMAKE_INSTALL_PREFIX}
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)
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# Define the version file
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write_basic_package_version_file(
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${CMAKE_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
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VERSION ${PROJECT_VERSION}
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COMPATIBILITY AnyNewerVersion
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)
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export(
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EXPORT ${PROJECT_NAME}Targets
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FILE ${CMAKE_BINARY_DIR}/${PROJECT_NAME}Targets.cmake
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)
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# Define the configuration file
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configure_file(
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${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_NAME}Config.cmake.in
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${CMAKE_BINARY_DIR}/${PROJECT_NAME}Config.cmake
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COPYONLY
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)
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install(
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EXPORT ${PROJECT_NAME}Targets
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FILE ${PROJECT_NAME}Targets.cmake
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DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
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)
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install(
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FILES
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${CMAKE_BINARY_DIR}/${PROJECT_NAME}Config.cmake
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${CMAKE_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
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DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
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)
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configure_file(
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${CMAKE_CURRENT_SOURCE_DIR}/template.pc
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${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc
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@ONLY
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)
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install(
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FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc
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DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
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)

‎install/fftpackConfig.cmake.in‎

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if (NOT TARGET fftpack)
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include("${CMAKE_CURRENT_LIST_DIR}/fftpackTargets.cmake")
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endif()

‎install/template.pc‎

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prefix = @CMAKE_INSTALL_PREFIX@
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libdir = ${prefix}/@CMAKE_INSTALL_FULL_LIBDIR@
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includedir = ${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
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Name: @PROJECT_NAME@
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Description: FFTPACK is a package of fortran subprograms for the fast fourier transform of periodic and other symmetric sequences.
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Version: @PROJECT_VERSION@
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Libs: -L${libdir} -l@PROJECT_NAME@
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Cflags: -I${includedir}

‎src/CMakeLists.txt‎

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# Locate the source directory
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set(dir ${CMAKE_CURRENT_SOURCE_DIR})
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# The source files
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set(FFTPACK_SOURCES
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${dir}/cfftb1.f90
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${dir}/cfftf1.f90
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${dir}/cffti1.f90
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${dir}/cosqb1.f90
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${dir}/cosqf1.f90
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${dir}/dcosqb.f90
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${dir}/dcosqf.f90
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${dir}/dcosqi.f90
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${dir}/dcost.f90
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${dir}/dcosti.f90
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${dir}/dfftb.f90
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${dir}/dfftf.f90
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${dir}/dffti.f90
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${dir}/dsinqb.f90
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${dir}/dsinqf.f90
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${dir}/dsinqi.f90
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${dir}/dsint.f90
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${dir}/dsinti.f90
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${dir}/dzfftb.f90
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${dir}/dzfftf.f90
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${dir}/dzffti.f90
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${dir}/ezfft1.f90
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${dir}/fftpack.f90
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${dir}/fftpack_dct.f90
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${dir}/fftpack_fft.f90
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${dir}/fftpack_fftshift.f90
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${dir}/fftpack_ifft.f90
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${dir}/fftpack_ifftshift.f90
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${dir}/fftpack_iqct.f90
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${dir}/fftpack_irfft.f90
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${dir}/fftpack_qct.f90
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${dir}/fftpack_rfft.f90
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${dir}/passb.f90
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${dir}/passb2.f90
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${dir}/passb3.f90
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${dir}/passb4.f90
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${dir}/passb5.f90
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${dir}/passf.f90
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${dir}/passf2.f90
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${dir}/passf3.f90
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${dir}/passf4.f90
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${dir}/passf5.f90
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${dir}/radb2.f90
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${dir}/radb3.f90
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${dir}/radb4.f90
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${dir}/radb5.f90
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${dir}/radbg.f90
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${dir}/radf2.f90
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${dir}/radf3.f90
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${dir}/radf4.f90
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${dir}/radf5.f90
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${dir}/radfg.f90
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${dir}/rfftb1.f90
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${dir}/rfftf1.f90
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${dir}/rffti1.f90
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${dir}/rk.f90
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${dir}/sint1.f90
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${dir}/zfftb.f90
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${dir}/zfftf.f90
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${dir}/zffti.f90
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)
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set(FFTPACK_SOURCES ${FFTPACK_SOURCES} PARENT_SCOPE)

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