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67 lines
3.1 KiB
67 lines
3.1 KiB
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#.rst:
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# FindLibLZMA
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# -----------
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#
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# Find LibLZMA
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#
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# Find LibLZMA headers and library
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#
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# ::
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#
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# LIBLZMA_FOUND - True if liblzma is found.
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# LIBLZMA_INCLUDE_DIRS - Directory where liblzma headers are located.
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# LIBLZMA_LIBRARIES - Lzma libraries to link against.
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# LIBLZMA_HAS_AUTO_DECODER - True if lzma_auto_decoder() is found (required).
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# LIBLZMA_HAS_EASY_ENCODER - True if lzma_easy_encoder() is found (required).
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# LIBLZMA_HAS_LZMA_PRESET - True if lzma_lzma_preset() is found (required).
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# LIBLZMA_VERSION_MAJOR - The major version of lzma
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# LIBLZMA_VERSION_MINOR - The minor version of lzma
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# LIBLZMA_VERSION_PATCH - The patch version of lzma
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# LIBLZMA_VERSION_STRING - version number as a string (ex: "5.0.3")
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find_path(LIBLZMA_INCLUDE_DIR lzma.h )
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find_library(LIBLZMA_LIBRARY lzma)
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if(LIBLZMA_INCLUDE_DIR AND EXISTS "${LIBLZMA_INCLUDE_DIR}/lzma/version.h")
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file(STRINGS "${LIBLZMA_INCLUDE_DIR}/lzma/version.h" LIBLZMA_HEADER_CONTENTS REGEX "#define LZMA_VERSION_[A-Z]+ [0-9]+")
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string(REGEX REPLACE ".*#define LZMA_VERSION_MAJOR ([0-9]+).*" "\\1" LIBLZMA_VERSION_MAJOR "${LIBLZMA_HEADER_CONTENTS}")
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string(REGEX REPLACE ".*#define LZMA_VERSION_MINOR ([0-9]+).*" "\\1" LIBLZMA_VERSION_MINOR "${LIBLZMA_HEADER_CONTENTS}")
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string(REGEX REPLACE ".*#define LZMA_VERSION_PATCH ([0-9]+).*" "\\1" LIBLZMA_VERSION_PATCH "${LIBLZMA_HEADER_CONTENTS}")
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set(LIBLZMA_VERSION_STRING "${LIBLZMA_VERSION_MAJOR}.${LIBLZMA_VERSION_MINOR}.${LIBLZMA_VERSION_PATCH}")
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unset(LIBLZMA_HEADER_CONTENTS)
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endif()
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# We're using new code known now as XZ, even library still been called LZMA
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# it can be found in http://tukaani.org/xz/
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# Avoid using old codebase
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if (LIBLZMA_LIBRARY)
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include(${CMAKE_CURRENT_LIST_DIR}/CheckLibraryExists.cmake)
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set(CMAKE_REQUIRED_QUIET_SAVE ${CMAKE_REQUIRED_QUIET})
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set(CMAKE_REQUIRED_QUIET ${LibLZMA_FIND_QUIETLY})
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CHECK_LIBRARY_EXISTS(${LIBLZMA_LIBRARY} lzma_auto_decoder "" LIBLZMA_HAS_AUTO_DECODER)
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CHECK_LIBRARY_EXISTS(${LIBLZMA_LIBRARY} lzma_easy_encoder "" LIBLZMA_HAS_EASY_ENCODER)
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CHECK_LIBRARY_EXISTS(${LIBLZMA_LIBRARY} lzma_lzma_preset "" LIBLZMA_HAS_LZMA_PRESET)
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set(CMAKE_REQUIRED_QUIET ${CMAKE_REQUIRED_QUIET_SAVE})
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endif ()
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibLZMA REQUIRED_VARS LIBLZMA_INCLUDE_DIR
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LIBLZMA_LIBRARY
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LIBLZMA_HAS_AUTO_DECODER
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LIBLZMA_HAS_EASY_ENCODER
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LIBLZMA_HAS_LZMA_PRESET
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VERSION_VAR LIBLZMA_VERSION_STRING
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)
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if (LIBLZMA_FOUND)
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set(LIBLZMA_LIBRARIES ${LIBLZMA_LIBRARY})
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set(LIBLZMA_INCLUDE_DIRS ${LIBLZMA_INCLUDE_DIR})
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endif ()
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mark_as_advanced( LIBLZMA_INCLUDE_DIR LIBLZMA_LIBRARY )
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