Commit 731f996c authored by David Cole's avatar David Cole Committed by Kitware Robot

Merge topic 'improve-findbzip2'

5b6ca9fa FindBZip2: add support for debug libraries (#12867)
40fb0051 FindBZip2: add support for version checking
parents dc3fb5ac 5b6ca9fa
......@@ -5,10 +5,12 @@
# BZIP2_INCLUDE_DIR - the BZip2 include directory
# BZIP2_LIBRARIES - Link these to use BZip2
# BZIP2_NEED_PREFIX - this is set if the functions are prefixed with BZ2_
# BZIP2_VERSION_STRING - the version of BZip2 found (since CMake 2.8.8)
#=============================================================================
# Copyright 2006-2009 Kitware, Inc.
# Copyright 2006-2012 Kitware, Inc.
# Copyright 2006 Alexander Neundorf <neundorf@kde.org>
# Copyright 2012 Rolf Eike Beer <eike@sf-mail.de>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
......@@ -22,17 +24,29 @@
FIND_PATH(BZIP2_INCLUDE_DIR bzlib.h )
FIND_LIBRARY(BZIP2_LIBRARIES NAMES bz2 bzip2 )
IF (NOT BZIP2_LIBRARIES)
FIND_LIBRARY(BZIP2_LIBRARY_RELEASE NAMES bz2 bzip2 )
FIND_LIBRARY(BZIP2_LIBRARY_DEBUG NAMES bzip2d )
INCLUDE(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
SELECT_LIBRARY_CONFIGURATIONS(BZIP2)
ENDIF (NOT BZIP2_LIBRARIES)
IF (BZIP2_INCLUDE_DIR AND EXISTS "${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}")
ENDIF (BZIP2_INCLUDE_DIR AND EXISTS "${BZIP2_INCLUDE_DIR}/bzlib.h")
# handle the QUIETLY and REQUIRED arguments and set BZip2_FOUND to TRUE if
# all listed variables are TRUE
INCLUDE(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(BZip2 DEFAULT_MSG BZIP2_LIBRARIES BZIP2_INCLUDE_DIR)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(BZip2
REQUIRED_VARS BZIP2_LIBRARIES BZIP2_INCLUDE_DIR
VERSION_VAR BZIP2_VERSION_STRING)
IF (BZIP2_FOUND)
INCLUDE(CheckLibraryExists)
CHECK_LIBRARY_EXISTS(${BZIP2_LIBRARIES} BZ2_bzCompressInit "" BZIP2_NEED_PREFIX)
CHECK_LIBRARY_EXISTS("${BZIP2_LIBRARIES}" BZ2_bzCompressInit "" BZIP2_NEED_PREFIX)
ENDIF (BZIP2_FOUND)
MARK_AS_ADVANCED(BZIP2_INCLUDE_DIR BZIP2_LIBRARIES)
MARK_AS_ADVANCED(BZIP2_INCLUDE_DIR)
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