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# - Try to find a z compression library
# under Windows the zlib exists with a variety of slightly different names
# Once done this will define
#
# ZLIB_FOUND - system has zlib
# ZLIB_INCLUDE_DIR - the zlib include directory
# ZLIB_LIBRARY - The libraries needed to use zlib
IF (ZLIB_INCLUDE_DIR)
# Already in cache, be silent
SET(ZLIB_FIND_QUIETLY TRUE)
ENDIF (ZLIB_INCLUDE_DIR)
FIND_PATH(ZLIB_INCLUDE_DIR zlib.h
/usr/include
/usr/local/include
)
SET(POTENTIAL_Z_LIBS z zlib zdll)
FIND_LIBRARY(ZLIB_LIBRARY NAMES ${POTENTIAL_Z_LIBS}
PATHS
/usr/lib
/usr/local/lib
)
IF (ZLIB_INCLUDE_DIR AND ZLIB_LIBRARY)
SET(ZLIB_FOUND TRUE)
ELSE (ZLIB_INCLUDE_DIR AND ZLIB_LIBRARY)
SET(ZLIB_FOUND FALSE)
ENDIF (ZLIB_INCLUDE_DIR AND ZLIB_LIBRARY)
IF (ZLIB_FOUND)
IF (NOT ZLIB_FIND_QUIETLY)
MESSAGE(STATUS "Found Z: ${ZLIB_LIBRARY}")
ENDIF (NOT ZLIB_FIND_QUIETLY)
ELSE (ZLIB_FOUND)
IF (ZLIB_FIND_REQUIRED)
MESSAGE(STATUS "Looked for Z libraries named ${POTENTIAL_Z_LIBS}.")
MESSAGE(STATUS "Found no acceptable Z library. This is fatal.")
MESSAGE(FATAL_ERROR "Could NOT find z library")
ENDIF (ZLIB_FIND_REQUIRED)
ENDIF (ZLIB_FOUND)
MARK_AS_ADVANCED(ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
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