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# - Find zlib
#
# Find the native ZLIB includes and library.
# Once done this will define
#
# ZLIB_INCLUDE_DIRS - where to find zlib.h, etc.
# ZLIB_LIBRARIES - List of libraries when using zlib.
# ZLIB_FOUND - True if zlib found.
# ZLIB_DLL_DIR - (Windows) Path to the zlib DLL.
# ZLIB_DLL - (Windows) Name of the zlib DLL.
#
# ZLIB_VERSION_STRING - The version of zlib found (x.y.z)
# ZLIB_VERSION_MAJOR - The major version of zlib
# ZLIB_VERSION_MINOR - The minor version of zlib
# ZLIB_VERSION_PATCH - The patch version of zlib
# ZLIB_VERSION_TWEAK - The tweak version of zlib
#
# The following variable are provided for backward compatibility
#
# ZLIB_MAJOR_VERSION - The major version of zlib
# ZLIB_MINOR_VERSION - The minor version of zlib
# ZLIB_PATCH_VERSION - The patch version of zlib
#=============================================================================
# Copyright 2001-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# We set these manually on Windows.
#INCLUDE(FindWSWinLibs)
#FindWSWinLibs("zlib" "ZLIB_HINTS")
if (NOT ZLIB_INCLUDE_DIR OR NOT ZLIB_LIBRARY)
find_package(PkgConfig)
pkg_search_module(ZLIB zlib)
FIND_PATH(ZLIB_INCLUDE_DIR
NAMES
zlib.h
HINTS
"${ZLIB_INCLUDEDIR}"
${ZLIB_HINTS}/include
${ZLIB_HINTS}
PATHS
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/include"
)
SET(ZLIB_NAMES z zlib zdll zlib1 zlibd zlibd1)
FIND_LIBRARY(ZLIB_LIBRARY
NAMES
${ZLIB_NAMES}
HINTS
"${ZLIB_LIBDIR}"
${ZLIB_HINTS}/lib
${ZLIB_HINTS}
PATHS
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/lib"
)
endif()
MARK_AS_ADVANCED(ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
IF(ZLIB_INCLUDE_DIR AND EXISTS "${ZLIB_INCLUDE_DIR}/zlib.h")
FILE(STRINGS "${ZLIB_INCLUDE_DIR}/zlib.h" ZLIB_H REGEX "^#define ZLIB_VERSION \"[^\"]*\"$")
STRING(REGEX REPLACE "^.*ZLIB_VERSION \"([0-9]+).*$" "\\1" ZLIB_VERSION_MAJOR "${ZLIB_H}")
STRING(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_MINOR "${ZLIB_H}")
STRING(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_PATCH "${ZLIB_H}")
SET(ZLIB_VERSION_STRING "${ZLIB_VERSION_MAJOR}.${ZLIB_VERSION_MINOR}.${ZLIB_VERSION_PATCH}")
# only append a TWEAK version if it exists:
SET(ZLIB_VERSION_TWEAK "")
IF( "${ZLIB_H}" MATCHES "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$")
SET(ZLIB_VERSION_TWEAK "${CMAKE_MATCH_1}")
SET(ZLIB_VERSION_STRING "${ZLIB_VERSION_STRING}.${ZLIB_VERSION_TWEAK}")
ENDIF( "${ZLIB_H}" MATCHES "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$")
SET(ZLIB_MAJOR_VERSION "${ZLIB_VERSION_MAJOR}")
SET(ZLIB_MINOR_VERSION "${ZLIB_VERSION_MINOR}")
SET(ZLIB_PATCH_VERSION "${ZLIB_VERSION_PATCH}")
ENDIF()
#
# Sigh. On Windows, we build libz as part of the Wireshark build
# process, so we don't necessarily *have* a libz library to search
# for inflatePrime() at this point; the search fails on the buildbots,
# for example. See bug 13850.
#
# So, on Windows, we just assume we have a new enough version of
# libz, so that it has inflatePrime().
#
IF(WIN32)
MESSAGE(STATUS "Zlib might not be built yet; assume it contains inflatePrime")
SET(HAVE_INFLATEPRIME ON)
ELSE()
INCLUDE(CheckFunctionExists)
SET(CMAKE_REQUIRED_LIBRARIES ${ZLIB_LIBRARY})
CHECK_FUNCTION_EXISTS("inflatePrime" HAVE_INFLATEPRIME)
# reset
SET(CMAKE_REQUIRED_LIBRARIES "")
ENDIF()
# handle the QUIETLY and REQUIRED arguments and set ZLIB_FOUND to TRUE if
# all listed variables are TRUE
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(ZLIB REQUIRED_VARS ZLIB_LIBRARY ZLIB_INCLUDE_DIR
VERSION_VAR ZLIB_VERSION_STRING)
IF(ZLIB_FOUND)
SET(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
SET(ZLIB_LIBRARIES ${ZLIB_LIBRARY})
#if (WIN32)
# set ( ZLIB_DLL_DIR "${ZLIB_HINTS}"
# CACHE PATH "Path to the Zlib DLL"
# )
# file( GLOB _zlib_dll RELATIVE "${ZLIB_DLL_DIR}"
# "${ZLIB_DLL_DIR}/zlib1.dll"
# )
# set ( ZLIB_DLL ${_zlib_dll}
# # We're storing filenames only. Should we use STRING instead?
# CACHE FILEPATH "Zlib DLL file name"
# )
# mark_as_advanced( ZLIB_DLL_DIR ZLIB_DLL )
#endif()
ELSE()
SET(ZLIB_INCLUDE_DIRS )
SET(ZLIB_LIBRARIES )
SET(ZLIB_DLL_DIR )
SET(ZLIB_DLL )
ENDIF()
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