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[044716]: / config / cmake / Modules / FindZLIB.cmake  Maximize  Restore  History

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#
# Find a ZLIB library
#
# This file is used to manage using either a natively provided ZLIB library or the one in v3p if provided.
#
#
# As per the standard scheme the following definitions are used
# ZLIB_INCLUDE_DIR - where to find zlib.h
# ZLIB_LIBRARIES - the set of libraries to include to use ZLIB.
# ZLIB_FOUND - TRUE, if available somewhere on the system.
# Additionally
# VXL_USING_NATIVE_ZLIB - True if we are using a ZLIB library provided outside vxl (or v3p)
# If this FORCE variable is unset or is FALSE, try to find a native library.
IF( VXL_FORCE_V3P_ZLIB )
ELSE( VXL_FORCE_V3P_ZLIB )
# Suppress not found messages
FIND_PACKAGE( ZLIB QUIET )
ENDIF( VXL_FORCE_V3P_ZLIB )
IF(ZLIB_FOUND)
SET(VXL_USING_NATIVE_ZLIB "YES")
# All the other variables are set by CMake's FindZLIB. Don't
# set them here.
ELSE(ZLIB_FOUND)
#
# At some point, in a "release" version, it is possible that someone
# will not have the v3p ZLIB library, so make sure the headers
# exist.
#
IF(EXISTS ${vxl_SOURCE_DIR}/v3p/zlib/zlib.h)
SET( ZLIB_FOUND "YES" )
SET( ZLIB_INCLUDE_DIR ${vxl_SOURCE_DIR}/v3p/zlib)
SET( ZLIB_INSTALL_INCLUDE_DIR ${CMAKE_INSTALL_PREFIX}/include/vxl/v3p/zlib)
SET( ZLIB_LIBRARIES z )
ENDIF(EXISTS ${vxl_SOURCE_DIR}/v3p/zlib/zlib.h)
ENDIF(ZLIB_FOUND)