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745b56f58c
No need to explain this over and over again. While at it, do some other minor cleanups to whitespace and comments (i.e. delete them).
90 lines
3.1 KiB
CMake
90 lines
3.1 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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#
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# Try to find BZip2
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#
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# IMPORTED Targets
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# ^^^^^^^^^^^^^^^^
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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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#
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# Result Variables
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# ^^^^^^^^^^^^^^^^
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#
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# This module defines the following variables:
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#
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# ::
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#
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# BZIP2_FOUND - system has BZip2
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# BZIP2_INCLUDE_DIR - the BZip2 include directory
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# BZIP2_LIBRARIES - Link these to use BZip2
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# BZIP2_NEED_PREFIX - this is set if the functions are prefixed with BZ2_
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# BZIP2_VERSION_STRING - the version of BZip2 found (since CMake 2.8.8)
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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 ${_BZIP2_PATHS} PATH_SUFFIXES lib)
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find_library(BZIP2_LIBRARY_DEBUG NAMES bz2d bzip2d ${_BZIP2_PATHS} PATH_SUFFIXES lib)
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include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
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SELECT_LIBRARY_CONFIGURATIONS(BZIP2)
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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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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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