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As of release 1.0.6, the bzip2 distribution includs a makefile for nmake on Windows that emits library names of the form `libbz2.lib`.
105 lines
3.4 KiB
CMake
105 lines
3.4 KiB
CMake
# 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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FindBZip2
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---------
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Try to find BZip2
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IMPORTED Targets
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^^^^^^^^^^^^^^^^
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This module defines :prop_tgt:`IMPORTED` target ``BZip2::BZip2``, if
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BZip2 has been found.
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Result Variables
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^^^^^^^^^^^^^^^^
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This module defines the following variables:
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``BZIP2_FOUND``
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system has BZip2
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``BZIP2_INCLUDE_DIRS``
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the BZip2 include directories
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``BZIP2_LIBRARIES``
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Link these to use BZip2
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``BZIP2_NEED_PREFIX``
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this is set if the functions are prefixed with ``BZ2_``
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``BZIP2_VERSION_STRING``
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the version of BZip2 found
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Cache variables
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^^^^^^^^^^^^^^^
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The following cache variables may also be set:
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``BZIP2_INCLUDE_DIR``
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the BZip2 include directory
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#]=======================================================================]
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set(_BZIP2_PATHS PATHS
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"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Bzip2;InstallPath]"
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)
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find_path(BZIP2_INCLUDE_DIR bzlib.h ${_BZIP2_PATHS} PATH_SUFFIXES include)
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if (NOT BZIP2_LIBRARIES)
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find_library(BZIP2_LIBRARY_RELEASE NAMES bz2 bzip2 libbz2 libbzip2 ${_BZIP2_PATHS} PATH_SUFFIXES lib)
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find_library(BZIP2_LIBRARY_DEBUG NAMES bz2d bzip2d libbz2d libbzip2d ${_BZIP2_PATHS} PATH_SUFFIXES lib)
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include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
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SELECT_LIBRARY_CONFIGURATIONS(BZIP2)
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else ()
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file(TO_CMAKE_PATH "${BZIP2_LIBRARIES}" BZIP2_LIBRARIES)
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endif ()
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if (BZIP2_INCLUDE_DIR AND EXISTS "${BZIP2_INCLUDE_DIR}/bzlib.h")
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file(STRINGS "${BZIP2_INCLUDE_DIR}/bzlib.h" BZLIB_H REGEX "bzip2/libbzip2 version [0-9]+\\.[^ ]+ of [0-9]+ ")
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string(REGEX REPLACE ".* bzip2/libbzip2 version ([0-9]+\\.[^ ]+) of [0-9]+ .*" "\\1" BZIP2_VERSION_STRING "${BZLIB_H}")
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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(BZip2
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REQUIRED_VARS BZIP2_LIBRARIES BZIP2_INCLUDE_DIR
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VERSION_VAR BZIP2_VERSION_STRING)
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if (BZIP2_FOUND)
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set(BZIP2_INCLUDE_DIRS ${BZIP2_INCLUDE_DIR})
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include(${CMAKE_CURRENT_LIST_DIR}/CheckSymbolExists.cmake)
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include(${CMAKE_CURRENT_LIST_DIR}/CMakePushCheckState.cmake)
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cmake_push_check_state()
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set(CMAKE_REQUIRED_QUIET ${BZip2_FIND_QUIETLY})
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set(CMAKE_REQUIRED_INCLUDES ${BZIP2_INCLUDE_DIR})
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set(CMAKE_REQUIRED_LIBRARIES ${BZIP2_LIBRARIES})
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CHECK_SYMBOL_EXISTS(BZ2_bzCompressInit "bzlib.h" BZIP2_NEED_PREFIX)
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cmake_pop_check_state()
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if(NOT TARGET BZip2::BZip2)
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add_library(BZip2::BZip2 UNKNOWN IMPORTED)
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set_target_properties(BZip2::BZip2 PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${BZIP2_INCLUDE_DIRS}")
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if(BZIP2_LIBRARY_RELEASE)
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set_property(TARGET BZip2::BZip2 APPEND PROPERTY
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IMPORTED_CONFIGURATIONS RELEASE)
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set_target_properties(BZip2::BZip2 PROPERTIES
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IMPORTED_LOCATION_RELEASE "${BZIP2_LIBRARY_RELEASE}")
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endif()
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if(BZIP2_LIBRARY_DEBUG)
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set_property(TARGET BZip2::BZip2 APPEND PROPERTY
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IMPORTED_CONFIGURATIONS DEBUG)
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set_target_properties(BZip2::BZip2 PROPERTIES
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IMPORTED_LOCATION_DEBUG "${BZIP2_LIBRARY_DEBUG}")
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endif()
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if(NOT BZIP2_LIBRARY_RELEASE AND NOT BZIP2_LIBRARY_DEBUG)
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set_property(TARGET BZip2::BZip2 APPEND PROPERTY
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IMPORTED_LOCATION "${BZIP2_LIBRARY}")
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endif()
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endif()
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endif ()
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mark_as_advanced(BZIP2_INCLUDE_DIR)
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