# Distributed under the OSI-approved BSD 3-Clause License. See accompanying # file LICENSE.rst or https://cmake.org/licensing for details. #[=======================================================================[.rst: FindLibLZMA ----------- Finds the liblzma, a data compression library that implements the LZMA (Lempel-Ziv-Markov chain algorithm): .. code-block:: cmake find_package(LibLZMA [] [...]) Imported Targets ^^^^^^^^^^^^^^^^ This module provides the following :ref:`Imported Targets`: ``LibLZMA::LibLZMA`` .. versionadded:: 3.14 Target encapsulating the liblzma library usage requirements, available only if liblzma is found. Result Variables ^^^^^^^^^^^^^^^^ This module defines the following variables: ``LibLZMA_FOUND`` .. versionadded:: 3.3 Boolean indicating whether (the requested version of) liblzma was found. ``LibLZMA_VERSION`` .. versionadded:: 4.2 The version of liblzma found (available as a string, for example, ``5.0.3``). ``LIBLZMA_INCLUDE_DIRS`` Include directories containing headers needed to use liblzma. ``LIBLZMA_LIBRARIES`` Libraries needed to link against to use liblzma. Cache Variables ^^^^^^^^^^^^^^^ The following cache variables may also be set: ``LIBLZMA_HAS_AUTO_DECODER`` Boolean sanity check result indicating whether the ``lzma_auto_decoder()`` function (automatic decoder functionality) is found in liblzma (required). ``LIBLZMA_HAS_EASY_ENCODER`` Boolean sanity check result indicating whether the ``lzma_easy_encoder()`` function (basic encoder API) is found in liblzma (required). ``LIBLZMA_HAS_LZMA_PRESET`` Boolean sanity check result indicating whether the ``lzma_lzma_preset()`` function (preset compression configuration) is found in liblzma (required). Deprecated Variables ^^^^^^^^^^^^^^^^^^^^ The following variables are provided for backward compatibility: ``LIBLZMA_FOUND`` .. deprecated:: 4.2 Use ``LibLZMA_FOUND``, which has the same value. Boolean indicating whether (the requested version of) liblzma was found. ``LIBLZMA_VERSION`` .. versionadded:: 3.26 .. deprecated:: 4.2 Superseded by the ``LibLZMA_VERSION``. The version of liblzma found. ``LIBLZMA_VERSION_STRING`` .. deprecated:: 3.26 Superseded by the ``LIBLZMA_VERSION`` (and ``LibLZMA_VERSION``). The version of liblzma found. ``LIBLZMA_VERSION_MAJOR`` .. deprecated:: 3.26 The major version of liblzma found. ``LIBLZMA_VERSION_MINOR`` .. deprecated:: 3.26 The minor version of liblzma found. ``LIBLZMA_VERSION_PATCH`` .. deprecated:: 3.26 The patch version of liblzma found. Examples ^^^^^^^^ Finding the liblzma library and linking it to a project target: .. code-block:: cmake find_package(LibLZMA) target_link_libraries(project_target PRIVATE LibLZMA::LibLZMA) #]=======================================================================] cmake_policy(PUSH) cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_ find_path(LIBLZMA_INCLUDE_DIR lzma.h ) if(NOT LIBLZMA_LIBRARY) find_library(LIBLZMA_LIBRARY_RELEASE NAMES lzma liblzma NAMES_PER_DIR PATH_SUFFIXES lib) find_library(LIBLZMA_LIBRARY_DEBUG NAMES lzmad liblzmad NAMES_PER_DIR PATH_SUFFIXES lib) include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake) select_library_configurations(LIBLZMA) else() file(TO_CMAKE_PATH "${LIBLZMA_LIBRARY}" LIBLZMA_LIBRARY) endif() if(LIBLZMA_INCLUDE_DIR AND EXISTS "${LIBLZMA_INCLUDE_DIR}/lzma/version.h") file(STRINGS "${LIBLZMA_INCLUDE_DIR}/lzma/version.h" LIBLZMA_HEADER_CONTENTS REGEX "#define LZMA_VERSION_[A-Z]+ [0-9]+") string(REGEX REPLACE ".*#define LZMA_VERSION_MAJOR ([0-9]+).*" "\\1" LIBLZMA_VERSION_MAJOR "${LIBLZMA_HEADER_CONTENTS}") string(REGEX REPLACE ".*#define LZMA_VERSION_MINOR ([0-9]+).*" "\\1" LIBLZMA_VERSION_MINOR "${LIBLZMA_HEADER_CONTENTS}") string(REGEX REPLACE ".*#define LZMA_VERSION_PATCH ([0-9]+).*" "\\1" LIBLZMA_VERSION_PATCH "${LIBLZMA_HEADER_CONTENTS}") set(LibLZMA_VERSION "${LIBLZMA_VERSION_MAJOR}.${LIBLZMA_VERSION_MINOR}.${LIBLZMA_VERSION_PATCH}") set(LIBLZMA_VERSION "${LibLZMA_VERSION}") set(LIBLZMA_VERSION_STRING "${LibLZMA_VERSION}") unset(LIBLZMA_HEADER_CONTENTS) endif() # We're using new code known now as XZ, even library still been called LZMA # it can be found in http://tukaani.org/xz/ # Avoid using old codebase if (LIBLZMA_LIBRARY) include(${CMAKE_CURRENT_LIST_DIR}/CheckLibraryExists.cmake) set(CMAKE_REQUIRED_QUIET_SAVE ${CMAKE_REQUIRED_QUIET}) set(CMAKE_REQUIRED_QUIET ${LibLZMA_FIND_QUIETLY}) if(NOT LIBLZMA_LIBRARY_RELEASE AND NOT LIBLZMA_LIBRARY_DEBUG) set(LIBLZMA_LIBRARY_check ${LIBLZMA_LIBRARY}) elseif(LIBLZMA_LIBRARY_RELEASE) set(LIBLZMA_LIBRARY_check ${LIBLZMA_LIBRARY_RELEASE}) elseif(LIBLZMA_LIBRARY_DEBUG) set(LIBLZMA_LIBRARY_check ${LIBLZMA_LIBRARY_DEBUG}) endif() check_library_exists(${LIBLZMA_LIBRARY_check} lzma_auto_decoder "" LIBLZMA_HAS_AUTO_DECODER) check_library_exists(${LIBLZMA_LIBRARY_check} lzma_easy_encoder "" LIBLZMA_HAS_EASY_ENCODER) check_library_exists(${LIBLZMA_LIBRARY_check} lzma_lzma_preset "" LIBLZMA_HAS_LZMA_PRESET) unset(LIBLZMA_LIBRARY_check) set(CMAKE_REQUIRED_QUIET ${CMAKE_REQUIRED_QUIET_SAVE}) endif () include(FindPackageHandleStandardArgs) find_package_handle_standard_args(LibLZMA REQUIRED_VARS LIBLZMA_LIBRARY LIBLZMA_INCLUDE_DIR LIBLZMA_HAS_AUTO_DECODER LIBLZMA_HAS_EASY_ENCODER LIBLZMA_HAS_LZMA_PRESET VERSION_VAR LibLZMA_VERSION ) mark_as_advanced( LIBLZMA_INCLUDE_DIR LIBLZMA_LIBRARY ) if (LibLZMA_FOUND) set(LIBLZMA_LIBRARIES ${LIBLZMA_LIBRARY}) set(LIBLZMA_INCLUDE_DIRS ${LIBLZMA_INCLUDE_DIR}) if(NOT TARGET LibLZMA::LibLZMA) add_library(LibLZMA::LibLZMA UNKNOWN IMPORTED) set_target_properties(LibLZMA::LibLZMA PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${LIBLZMA_INCLUDE_DIR}" IMPORTED_LINK_INTERFACE_LANGUAGES C) if(LIBLZMA_LIBRARY_RELEASE) set_property(TARGET LibLZMA::LibLZMA APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE) set_target_properties(LibLZMA::LibLZMA PROPERTIES IMPORTED_LOCATION_RELEASE "${LIBLZMA_LIBRARY_RELEASE}") endif() if(LIBLZMA_LIBRARY_DEBUG) set_property(TARGET LibLZMA::LibLZMA APPEND PROPERTY IMPORTED_CONFIGURATIONS DEBUG) set_target_properties(LibLZMA::LibLZMA PROPERTIES IMPORTED_LOCATION_DEBUG "${LIBLZMA_LIBRARY_DEBUG}") endif() if(NOT LIBLZMA_LIBRARY_RELEASE AND NOT LIBLZMA_LIBRARY_DEBUG) set_target_properties(LibLZMA::LibLZMA PROPERTIES IMPORTED_LOCATION "${LIBLZMA_LIBRARY}") endif() endif() endif () cmake_policy(POP)