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# 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 data compression library that implements the LZMA (Lempel–Ziv–Markov
chain algorithm) - 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``
Boolean indicating whether the liblzma is found. For backward compatibility,
the ``LIBLZMA_FOUND`` variable is also set to the same value.
``LIBLZMA_INCLUDE_DIRS``
Include directories containing headers needed to use liblzma.
``LIBLZMA_LIBRARIES``
Libraries needed to link against to use liblzma.
``LIBLZMA_VERSION``
.. versionadded:: 3.26
The version of liblzma found (available as a string, for example, ``5.0.3``).
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).
Legacy Variables
^^^^^^^^^^^^^^^^
The following variables are provided for backward compatibility:
``LIBLZMA_VERSION_MAJOR``
The major version of liblzma found.
``LIBLZMA_VERSION_MINOR``
The minor version of liblzma found.
``LIBLZMA_VERSION_PATCH``
The patch version of liblzma found.
``LIBLZMA_VERSION_STRING``
The version of liblzma found.
.. versionchanged:: 3.26
Superseded by ``LIBLZMA_VERSION``.
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_<n>
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 "${LIBLZMA_HEADER_CONTENTS}")
set(LIBLZMA_VERSION_STRING "${LIBLZMA_VERSION_MAJOR}.${LIBLZMA_VERSION_MINOR}.${LIBLZMA_VERSION_PATCH}")
set(LIBLZMA_VERSION ${LIBLZMA_VERSION_STRING})
unset(LIBLZMA_HEADER_CONTENTS)
endif()
# We're using new code known now as XZ, even library still been called LZMA
# it can be found in http://tukaani.org/xz/
# Avoid using old codebase
if (LIBLZMA_LIBRARY)
include(${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)
|
