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CMake: add upstream FindLibLZMA.cmake

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Required since older CMake versions of this don't define an imported target
This commit is contained in:
James Turner 2021-01-10 11:30:35 +00:00
parent d4a7cb1ee2
commit fa1f13cbe2
1 changed files with 124 additions and 0 deletions
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CMakeModules/FindLibLZMA.cmake Normal file
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindLibLZMA
-----------
Find LZMA compression algorithm headers and library.
Imported Targets
^^^^^^^^^^^^^^^^
This module defines :prop_tgt:`IMPORTED` target ``LibLZMA::LibLZMA``, if
liblzma has been found.
Result variables
^^^^^^^^^^^^^^^^
This module will set the following variables in your project:
``LIBLZMA_FOUND``
True if liblzma headers and library were found.
``LIBLZMA_INCLUDE_DIRS``
Directory where liblzma headers are located.
``LIBLZMA_LIBRARIES``
Lzma libraries to link against.
``LIBLZMA_HAS_AUTO_DECODER``
True if lzma_auto_decoder() is found (required).
``LIBLZMA_HAS_EASY_ENCODER``
True if lzma_easy_encoder() is found (required).
``LIBLZMA_HAS_LZMA_PRESET``
True if lzma_lzma_preset() is found (required).
``LIBLZMA_VERSION_MAJOR``
The major version of lzma
``LIBLZMA_VERSION_MINOR``
The minor version of lzma
``LIBLZMA_VERSION_PATCH``
The patch version of lzma
``LIBLZMA_VERSION_STRING``
version number as a string (ex: "5.0.3")
#]=======================================================================]
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(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}")
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(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.cmake)
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_STRING
)
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 ()