CMakeLists.txt

# Copyright (c) 2024, International Business Machines
# SPDX-License-Identifier: BSD-2-Clause-Patent

cmake_minimum_required(VERSION 3.20 FATAL_ERROR)

project(CommonLowLevelTracingKit LANGUAGES C CXX)

include(GNUInstallDirs)
include(cmake/Toolchain.cmake)
include(cmake/ToolchainVersionCheck.cmake)
include(cmake/CreateVersion.cmake)
include(cmake/CheckPICEnabled.cmake)
include(cmake/CodeCoverage.cmake)
include(cmake/ASAN.cmake)
include(cmake/StaticAnalysis.cmake)
include(cmake/CompileWarnings.cmake)

if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
    # We're in the root, define additional targets for developers.
    message(STATUS "clltk is standalone")
    option(STANDALONE_PROJECT "Build as standalone project" ON)
else()
    message(STATUS "clltk is imported")
    option(STANDALONE_PROJECT "Build as standalone project" OFF)
endif()

set(CLLTK_TRACING_LIB_TYPE "STATIC" CACHE STRING "make target clltk_tracing alias for clltk_tracing_shared with \"SHARED\" or clltk_tracing_static with \"STATIC\"")
option(CLLTK_TRACING "select tracing lib for build and packaging" ON)
if(CLLTK_TRACING)
    message(STATUS "add tracing_library")
    add_subdirectory(./tracing_library)
    check_pic_enabled(clltk_tracing_static)
    check_pic_enabled(clltk_tracing_shared)
    check_pic_enabled(clltk_tracing)
endif()

option(CLLTK_SNAPSHOT "select snapshot lib for build and packaging" ON)
if(CLLTK_SNAPSHOT)
    message(STATUS "add snapshot_library")
    add_subdirectory(./snapshot_library)
    check_pic_enabled(clltk_snapshot_static)
    check_pic_enabled(clltk_snapshot_shared)
endif()

option(CLLTK_COMMAND_LINE_TOOL "select clltk_cmd for packaging" ON)
if(CLLTK_COMMAND_LINE_TOOL)
    message(STATUS "add command_line_tool")
    add_subdirectory(./command_line_tool)
endif()

option(CLLTK_PYTHON_DECODER "select python decoder for packaging" ON)
option(CLLTK_CPP_DECODER "select cpp decoder for packaging" ON)
add_subdirectory(./decoder_tool)

option(CLLTK_KERNEL_TRACING "select kernel tracing module for build" ${STANDALONE_PROJECT})
if(CLLTK_KERNEL_TRACING AND EXISTS ./kernel_tracing_library )
    message(STATUS "add kernel_tracing")
    add_subdirectory(./kernel_tracing_library EXCLUDE_FROM_ALL)
endif()

option(CLLTK_EXAMPLES "Also configure and build examples" ${STANDALONE_PROJECT})
if(CLLTK_EXAMPLES AND EXISTS ./examples )
    message(STATUS "add examples")
    add_subdirectory(./examples)
endif()

option(CLLTK_TESTS "Also configure and build tests" ${STANDALONE_PROJECT})
if(CLLTK_TESTS AND EXISTS ./tests/)
    message(STATUS "add tests")
    enable_testing()
    add_subdirectory(./tests/)
endif()

# Generate build info header (for command line tool)
# Note: Must be after all CLLTK_* options are defined since build_info uses them
include(cmake/CreateBuildInfo.cmake)

# --- CMake package config for find_package(CLLTK) ---
include(CMakePackageConfigHelpers)
include(GNUInstallDirs)

install(EXPORT CLLTKTracingTargets
    FILE CLLTKTracingTargets.cmake
    NAMESPACE clltk::
    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/CLLTK
    COMPONENT devel
)

configure_package_config_file(
    "${CMAKE_CURRENT_SOURCE_DIR}/cmake/CLLTKConfig.cmake.in"
    "${CMAKE_CURRENT_BINARY_DIR}/CLLTKConfig.cmake"
    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/CLLTK
)

write_basic_package_version_file(
    "${CMAKE_CURRENT_BINARY_DIR}/CLLTKConfigVersion.cmake"
    VERSION ${CLLTK_VERSION_STRING}
    COMPATIBILITY SameMajorVersion
)

install(FILES
    "${CMAKE_CURRENT_BINARY_DIR}/CLLTKConfig.cmake"
    "${CMAKE_CURRENT_BINARY_DIR}/CLLTKConfigVersion.cmake"
    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/CLLTK
    COMPONENT devel
)

# CPack packaging (must be last)
include(cmake/CreatePackage.cmake)