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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:
FindBZip2
---------
Try to find BZip2
IMPORTED Targets
^^^^^^^^^^^^^^^^
.. versionadded:: 3.12
This module defines :prop_tgt:`IMPORTED` target ``BZip2::BZip2``, if
BZip2 has been found.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``BZIP2_FOUND``
system has BZip2
``BZIP2_INCLUDE_DIRS``
.. versionadded:: 3.12
the BZip2 include directories
``BZIP2_LIBRARIES``
Link these to use BZip2
``BZIP2_NEED_PREFIX``
this is set if the functions are prefixed with ``BZ2_``
``BZIP2_VERSION``
.. versionadded:: 3.26
the version of BZip2 found.
See also legacy variable ``BZIP2_VERSION_STRING``.
Cache variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``BZIP2_INCLUDE_DIR``
the BZip2 include directory
Legacy Variables
^^^^^^^^^^^^^^^^
The following variables are provided for backward compatibility:
``BZIP2_VERSION_STRING``
the version of BZip2 found.
.. versionchanged:: 3.26
Superseded by ``BZIP2_VERSION``.
#]=======================================================================]
set(_BZIP2_PATHS PATHS
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Bzip2;InstallPath]"
)
find_path(BZIP2_INCLUDE_DIR bzlib.h ${_BZIP2_PATHS} PATH_SUFFIXES include)
if (NOT BZIP2_LIBRARIES)
find_library(BZIP2_LIBRARY_RELEASE NAMES bz2 bzip2 libbz2 libbzip2 NAMES_PER_DIR ${_BZIP2_PATHS} PATH_SUFFIXES lib)
find_library(BZIP2_LIBRARY_DEBUG NAMES bz2d bzip2d libbz2d libbzip2d NAMES_PER_DIR ${_BZIP2_PATHS} PATH_SUFFIXES lib)
include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
SELECT_LIBRARY_CONFIGURATIONS(BZIP2)
else ()
file(TO_CMAKE_PATH "${BZIP2_LIBRARIES}" BZIP2_LIBRARIES)
endif ()
if (BZIP2_INCLUDE_DIR AND EXISTS "${BZIP2_INCLUDE_DIR}/bzlib.h")
file(STRINGS "${BZIP2_INCLUDE_DIR}/bzlib.h" BZLIB_H REGEX "bzip2/libbzip2 version [0-9]+\\.[^ ]+ of [0-9]+ ")
string(REGEX REPLACE ".* bzip2/libbzip2 version ([0-9]+\\.[^ ]+) of [0-9]+ .*" "\\1" BZIP2_VERSION_STRING "${BZLIB_H}")
set(BZIP2_VERSION ${BZIP2_VERSION_STRING})
endif ()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(BZip2
REQUIRED_VARS BZIP2_LIBRARIES BZIP2_INCLUDE_DIR
VERSION_VAR BZIP2_VERSION)
if (BZIP2_FOUND)
set(BZIP2_INCLUDE_DIRS ${BZIP2_INCLUDE_DIR})
include(${CMAKE_CURRENT_LIST_DIR}/CheckSymbolExists.cmake)
include(${CMAKE_CURRENT_LIST_DIR}/CMakePushCheckState.cmake)
cmake_push_check_state()
set(CMAKE_REQUIRED_QUIET ${BZip2_FIND_QUIETLY})
set(CMAKE_REQUIRED_INCLUDES ${BZIP2_INCLUDE_DIR})
set(CMAKE_REQUIRED_LIBRARIES ${BZIP2_LIBRARIES})
CHECK_SYMBOL_EXISTS(BZ2_bzCompressInit "bzlib.h" BZIP2_NEED_PREFIX)
cmake_pop_check_state()
if(NOT TARGET BZip2::BZip2)
add_library(BZip2::BZip2 UNKNOWN IMPORTED)
set_target_properties(BZip2::BZip2 PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${BZIP2_INCLUDE_DIRS}")
if(BZIP2_LIBRARY_RELEASE)
set_property(TARGET BZip2::BZip2 APPEND PROPERTY
IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(BZip2::BZip2 PROPERTIES
IMPORTED_LOCATION_RELEASE "${BZIP2_LIBRARY_RELEASE}")
endif()
if(BZIP2_LIBRARY_DEBUG)
set_property(TARGET BZip2::BZip2 APPEND PROPERTY
IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(BZip2::BZip2 PROPERTIES
IMPORTED_LOCATION_DEBUG "${BZIP2_LIBRARY_DEBUG}")
endif()
if(NOT BZIP2_LIBRARY_RELEASE AND NOT BZIP2_LIBRARY_DEBUG)
set_property(TARGET BZip2::BZip2 APPEND PROPERTY
IMPORTED_LOCATION "${BZIP2_LIBRARY}")
endif()
endif()
endif ()
mark_as_advanced(BZIP2_INCLUDE_DIR)
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