CMakeLists.txt

cmake_minimum_required(VERSION 3.5)

option(CMAKE_VERBOSE_MAKEFILE "..." ON)

project(foo)

add_library(foo foo/foo.cpp foo/foo.hpp)
add_library(foo::foo ALIAS foo)

target_include_directories(
    foo PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}>"
)

include(GNUInstallDirs)

set(config_install_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
set(project_config "${generated_dir}/${PROJECT_NAME}Config.cmake")
set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
set(namespace "${PROJECT_NAME}::")

include(CMakePackageConfigHelpers)

configure_package_config_file(
    "cmake/template/Config.cmake.in"
    "${project_config}"
    INSTALL_DESTINATION "${config_install_dir}"
)

install(
    TARGETS foo
    EXPORT "${TARGETS_EXPORT_NAME}"
    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
    INCLUDES DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
)

install(
    FILES foo/foo.hpp
    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}"
)

install(
    FILES "${project_config}"
    DESTINATION "${config_install_dir}"
)

install(
    EXPORT "${TARGETS_EXPORT_NAME}"
    NAMESPACE "${namespace}"
    DESTINATION "${config_install_dir}"
)