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# - Find zlib
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# Find the native ZLIB includes and library.
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# Once done this will define
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#
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# ZLIB_INCLUDE_DIRS - where to find zlib.h, etc.
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# ZLIB_LIBRARIES - List of libraries when using zlib.
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# ZLIB_FOUND - True if zlib found.
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#
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# ZLIB_VERSION_STRING - The version of zlib found (x.y.z)
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# ZLIB_VERSION_MAJOR - The major version of zlib
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# ZLIB_VERSION_MINOR - The minor version of zlib
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# ZLIB_VERSION_PATCH - The patch version of zlib
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# ZLIB_VERSION_TWEAK - The tweak version of zlib
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#
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# The following variable are provided for backward compatibility
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#
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# ZLIB_MAJOR_VERSION - The major version of zlib
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# ZLIB_MINOR_VERSION - The minor version of zlib
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# ZLIB_PATCH_VERSION - The patch version of zlib
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#=============================================================================
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# Copyright 2001-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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FIND_PATH(ZLIB_INCLUDE_DIR zlib.h
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"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/include"
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)
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SET(ZLIB_NAMES z zlib zdll)
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FIND_LIBRARY(ZLIB_LIBRARY
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NAMES
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${ZLIB_NAMES}
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PATHS
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"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/lib"
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)
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MARK_AS_ADVANCED(ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
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IF(ZLIB_INCLUDE_DIR AND EXISTS "${ZLIB_INCLUDE_DIR}/zlib.h")
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FILE(STRINGS "${ZLIB_INCLUDE_DIR}/zlib.h" ZLIB_H REGEX "^#define ZLIB_VERSION \"[^\"]*\"$")
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STRING(REGEX REPLACE "^.*ZLIB_VERSION \"([0-9]+).*$" "\\1" ZLIB_VERSION_MAJOR "${ZLIB_H}")
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STRING(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_MINOR "${ZLIB_H}")
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STRING(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_PATCH "${ZLIB_H}")
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SET(ZLIB_VERSION_STRING "${ZLIB_VERSION_MAJOR}.${ZLIB_VERSION_MINOR}.${ZLIB_VERSION_PATCH}")
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# only append a TWEAK version if it exists:
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SET(ZLIB_VERSION_TWEAK "")
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IF( "${ZLIB_H}" MATCHES "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$")
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SET(ZLIB_VERSION_TWEAK "${CMAKE_MATCH_1}")
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SET(ZLIB_VERSION_STRING "${ZLIB_VERSION_STRING}.${ZLIB_VERSION_TWEAK}")
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ENDIF( "${ZLIB_H}" MATCHES "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$")
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SET(ZLIB_MAJOR_VERSION "${ZLIB_VERSION_MAJOR}")
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SET(ZLIB_MINOR_VERSION "${ZLIB_VERSION_MINOR}")
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SET(ZLIB_PATCH_VERSION "${ZLIB_VERSION_PATCH}")
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ENDIF()
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# handle the QUIETLY and REQUIRED arguments and set ZLIB_FOUND to TRUE if
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# all listed variables are TRUE
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INCLUDE(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(ZLIB REQUIRED_VARS ZLIB_INCLUDE_DIR ZLIB_LIBRARY
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VERSION_VAR ZLIB_VERSION_STRING)
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IF(ZLIB_FOUND)
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SET(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
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SET(ZLIB_LIBRARIES ${ZLIB_LIBRARY})
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ENDIF()
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