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# - Try to find BZip2
# Once done this will define
#
# BZIP2_FOUND - system has BZip2
# BZIP2_INCLUDE_DIR - the BZip2 include directory
# BZIP2_LIBRARIES - Link these to use BZip2
# BZIP2_DEFINITIONS - Compiler switches required for using BZip2
# BZIP2_NEED_PREFIX - this is set if the functions are prefixed with BZ2_
if (BZIP2_INCLUDE_DIR AND BZIP2_LIBRARIES)
# in cache already, avoid doing the CHECK_LIBRARY_EXISTS again.
SET(BZIP2_FOUND TRUE)
else (BZIP2_INCLUDE_DIR AND BZIP2_LIBRARIES)
FIND_PATH(BZIP2_INCLUDE_DIR bzlib.h
/usr/include
/usr/local/include
)
FIND_LIBRARY(BZIP2_LIBRARIES NAMES bz2 bzip2
PATHS
/usr/lib
/usr/local/lib
)
if (BZIP2_INCLUDE_DIR AND BZIP2_LIBRARIES)
set(BZIP2_FOUND TRUE)
INCLUDE(CheckLibraryExists)
CHECK_LIBRARY_EXISTS(${BZIP2_LIBRARIES} BZ2_bzCompressInit "" BZIP2_NEED_PREFIX)
endif (BZIP2_INCLUDE_DIR AND BZIP2_LIBRARIES)
if (BZIP2_FOUND)
if (NOT BZip2_FIND_QUIETLY)
message(STATUS "Found BZip2: ${BZIP2_LIBRARIES}")
endif (NOT BZip2_FIND_QUIETLY)
else (BZIP2_FOUND)
if (BZip2_FIND_REQUIRED)
message(FATAL_ERROR "Could NOT find BZip2")
endif (BZip2_FIND_REQUIRED)
endif (BZIP2_FOUND)
MARK_AS_ADVANCED(BZIP2_INCLUDE_DIR BZIP2_LIBRARIES)
endif (BZIP2_INCLUDE_DIR AND BZIP2_LIBRARIES)
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