feat(CMakeLists.txt): use FindZLIB from cmake

CMakeLists.txt

@@ -136,7 +136,7 @@ endif()
 find_package(XML2 REQUIRED)
 find_package(LibXsd REQUIRED)
 find_package(Soci)
-find_package(Zlib)
+find_package(ZLIB)
 if(ENABLE_TUNNEL)
 	if(LINPHONE_BUILDER_GROUP_EXTERNAL_SOURCE_PATH_BUILDERS)
 		include("${EP_tunnel_CONFIG_DIR}/TunnelConfig.cmake")

cmake/FindZlib.cmake

-############################################################################
-# FindZlib.txt
-# Copyright (C) 2015  Belledonne Communications, Grenoble France
-#
-############################################################################
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-#
-############################################################################
-#
-# - Find the zlib include file and library
-#
-#  ZLIB_FOUND - system has zlib
-#  ZLIB_INCLUDE_DIRS - the zlib include directory
-#  ZLIB_LIBRARIES - The libraries needed to use zlib
-
-if(APPLE AND NOT IOS)
-	set(ZLIB_HINTS "/usr")
-endif()
-if(ZLIB_HINTS)
-	set(ZLIB_LIBRARIES_HINTS "${ZLIB_HINTS}/lib")
-endif()
-
-find_path(ZLIB_INCLUDE_DIRS
-	NAMES zlib.h
-	HINTS "${ZLIB_HINTS}"
-	PATH_SUFFIXES include
-)
-
-if(ZLIB_INCLUDE_DIRS)
-	set(HAVE_ZLIB_H 1)
-endif()
-
-if(ENABLE_STATIC)
-	find_library(ZLIB_LIBRARIES
-		NAMES zstatic zlibstatic zlibstaticd z
-		HINTS "${ZLIB_LIBRARIES_HINTS}"
-	)
-else()
-	find_library(ZLIB_LIBRARIES
-		NAMES z zlib zlibd
-		HINTS "${ZLIB_LIBRARIES_HINTS}"
-	)
-endif()
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Zlib
-	DEFAULT_MSG
-	ZLIB_INCLUDE_DIRS ZLIB_LIBRARIES HAVE_ZLIB_H
-)
-
-mark_as_advanced(ZLIB_INCLUDE_DIRS ZLIB_LIBRARIES HAVE_ZLIB_H)