Связать импортированные библиотеки с CMake ExternalProject

Я пытаюсь создать супербилд, чтобы скомпилировать зависимости (zlib, nifticlib и boost), а затем скомпилировать мой проект, в зависимости от всех этих библиотек.

Вот мои CMakeLists:

cmake_minimum_required(VERSION 3.6)

project(CMakeTest)

#-----------------------------------------------------------------------------
# Build options
#-----------------------------------------------------------------------------

option(BUILD_MYPROJECT "Build MYPROJECT." ON)

#-----------------------------------------------------------------------------
# Git protocole option
#-----------------------------------------------------------------------------
option(USE_GIT_PROTOCOL "If behind a firewall turn this off to use http instead." OFF)

set(git_protocol "git")
if(NOT USE_GIT_PROTOCOL)
set(git_protocol "https")
endif()

#-----------------------------------------------------------------------------
# Enable and setup External project global properties
#-----------------------------------------------------------------------------
include(ExternalProject)

if (NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release CACHE STRING
"Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel."FORCE)
endif()

#-----------------------------------------------------------------------------
# Zlib
#-----------------------------------------------------------------------------

message(STATUS "Installing Zlib library.")

ExternalProject_Add(Zlib
SOURCE_DIR "${PROJECT_BINARY_DIR}/deps/zlib"BINARY_DIR "${PROJECT_BINARY_DIR}/deps/zlib-build"INSTALL_DIR "${PROJECT_BINARY_DIR}/deps/zlib-install"GIT_REPOSITORY "${git_protocol}://github.com/madler/zlib.git"GIT_TAG "50893291621658f355bc5b4d450a8d06a563053d"CMAKE_ARGS
-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
-DCMAKE_BIN_DIR:PATH=<INSTALL_DIR>/bin
-DINSTALL_INC_DIR:PATH=<INSTALL_DIR>/include
-DINSTALL_LIB_DIR:PATH=<INSTALL_DIR>/lib
-DINSTALL_MAN_DIR:PATH=<INSTALL_DIR>/share/man
-DINSTALL_PKGCONFIG_DIR:PATH=<INSTALL_DIR>/share/pkgconfig)

if(WIN32)
set(ZLIB_LIB_BASE_NAME "zlibstatic")
set(ZLIB_LIB_NAME_RELEASE "${CMAKE_STATIC_LIBRARY_PREFIX}${ZLIB_LIB_BASE_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}")
set(ZLIB_LIB_NAME_DEBUG "${CMAKE_STATIC_LIBRARY_PREFIX}${ZLIB_LIB_BASE_NAME}d${CMAKE_STATIC_LIBRARY_SUFFIX}")
elseif(UNIX)
set(ZLIB_LIB_BASE_NAME "z")
set(ZLIB_LIB_NAME_RELEASE "${CMAKE_STATIC_LIBRARY_PREFIX}${ZLIB_LIB_BASE_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}")
set(ZLIB_LIB_NAME_DEBUG "${CMAKE_STATIC_LIBRARY_PREFIX}${ZLIB_LIB_BASE_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}")
else()
# MacOSX
endif()

ExternalProject_Get_Property(Zlib install_dir)
set(ZLIB_LIBRARY_DIR ${install_dir}/lib)
set(ZLIB_INCLUDE_DIR ${install_dir}/include)
set(ZLIB_BINARY_DIR ${install_dir}/bin)

add_library(zlib STATIC IMPORTED)
set_target_properties(zlib PROPERTIES IMPORTED_LOCATION_DEBUG "${ZLIB_LIBRARY_DIR}/${ZLIB_LIB_NAME_DEBUG}")
set_target_properties(zlib PROPERTIES IMPORTED_LOCATION_RELEASE "${ZLIB_LIBRARY_DIR}/${ZLIB_LIB_NAME_RELEASE}")

#-----------------------------------------------------------------------------
# Niftilib
#-----------------------------------------------------------------------------

message(STATUS "Installing Nifti library.")

ExternalProject_Add(Nifticlib
SOURCE_DIR "${PROJECT_BINARY_DIR}/deps/nifticlib"BINARY_DIR "${PROJECT_BINARY_DIR}/deps/nifticlib-build"INSTALL_DIR "${PROJECT_BINARY_DIR}/deps/nifticlib-install"GIT_REPOSITORY "${git_protocol}://gitlab.com/slckr/nifticlib.git"GIT_TAG "e26a94e947c210104223f9f49737392c742c1c5b"CMAKE_ARGS
-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
-DZLIB_INCLUDE_DIR:PATH=${ZLIB_INCLUDE_DIR}
-DZLIB_LIBRARY_DEBUG:PATH=${ZLIB_LIBRARY_DIR}/${ZLIB_LIB_NAME_DEBUG}
-DZLIB_LIBRARY_RELEASE:PATH=${ZLIB_LIBRARY_DIR}/${ZLIB_LIB_NAME_RELEASE}
DEPENDS Zlib)

set(NIFTIIO_LIB_BASE_NAME "niftiio")
set(NIFTIIO_LIB_NAME "${CMAKE_STATIC_LIBRARY_PREFIX}${NIFTIIO_LIB_BASE_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}")

set(NIFTICDF_LIB_BASE_NAME "nifticdf")
set(NIFTICDF_LIB_NAME "${CMAKE_STATIC_LIBRARY_PREFIX}${NIFTICDF_LIB_BASE_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}")

set(ZNZ_LIB_BASE_NAME "znz")
set(ZNZ_LIB_NAME "${CMAKE_STATIC_LIBRARY_PREFIX}${ZNZ_LIB_BASE_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}")

ExternalProject_Get_Property(Nifticlib install_dir)
set(NIFTI_LIBRARY_DIR ${install_dir}/lib)
set(NIFTI_INCLUDE_DIR ${install_dir}/include/nifti)
set(NIFTI_BINARY_DIR ${install_dir}/bin)

add_library(niftiio STATIC IMPORTED)
set_target_properties(niftiio PROPERTIES IMPORTED_LOCATION "${NIFTI_LIBRARY_DIR}/${NIFTIIO_LIB_NAME}")

add_library(nifticdf STATIC IMPORTED)
set_target_properties(nifticdf PROPERTIES IMPORTED_LOCATION "${NIFTI_LIBRARY_DIR}/${NIFTICDF_LIB_NAME}")

add_library(znz STATIC IMPORTED)
set_target_properties(znz PROPERTIES IMPORTED_LOCATION "${NIFTI_LIBRARY_DIR}/${ZNZ_LIB_NAME}")

#-----------------------------------------------------------------------------
# Boost
#-----------------------------------------------------------------------------

message(STATUS "Installing Boost library.")

set(BOOST_BOOTSTRAP_COMMAND)
if(WIN32)
set(BOOST_BOOTSTRAP_COMMAND bootstrap.bat)
set(BOOST_B2_COMMAND b2.exe)
elseif(UNIX )
set(BOOST_BOOTSTRAP_COMMAND ./bootstrap.sh)
set(BOOST_B2_COMMAND ./b2)
else()
# MacOSX
set(BOOST_BOOTSTRAP_COMMAND ./bootstrap.sh)
set(BOOST_B2_COMMAND ./b2)
endif()

set(BOOST_BUILD_TYPE variant=release)
if (${CMAKE_BUILD_TYPE} MATCHES Debug)
set(BOOST_BUILD_TYPE variant=debug)
endif(${CMAKE_BUILD_TYPE} MATCHES Debug)

set(BOOST_INSTALL_DIR ${PROJECT_BINARY_DIR}/deps/boost-install)
ExternalProject_Add(boost
SOURCE_DIR "${PROJECT_BINARY_DIR}/deps/boost"BUILD_IN_SOURCE 1
GIT_REPOSITORY "${git_protocol}://github.com/boostorg/boost"GIT_TAG "5ec478a570bdc71c5d4854e7165a8b3f4fa82ad9"CONFIGURE_COMMAND ${BOOST_BOOTSTRAP_COMMAND}
BUILD_COMMAND ${BOOST_B2_COMMAND} headers COMMAND ${BOOST_B2_COMMAND} install
link=static
${BOOST_BUILD_TYPE}
--prefix=${BOOST_INSTALL_DIR}
--with-filesystem
--with-program_options
--with-system
--with-thread
-j8
INSTALL_COMMAND "")

if(WIN32)
set(BOOST_LIBRARY_DIR ${BOOST_INSTALL_DIR}/lib/boost)
set(BOOST_INCLUDE_DIR ${BOOST_INSTALL_DIR}/include/boost-1_65)
else()
set(BOOST_LIBRARY_DIR ${BOOST_INSTALL_DIR}/lib/boost)
set(BOOST_INCLUDE_DIR ${BOOST_INSTALL_DIR}/include)
endif()

set(BOOST_SUBMODULES system;filesystem;program_options;thread)

#-----------------------------------------------------------------------------
# MyProject
#-----------------------------------------------------------------------------

message(STATUS "Installing MyProject library.")

if(BUILD_MYPROJECT)
set(MYPROJECT_LIBS zlib;znz;nifticdf;niftiio)
ExternalProject_Add(MYPROJECT
SOURCE_DIR "${PROJECT_BINARY_DIR}/MyProject"BINARY_DIR "${PROJECT_BINARY_DIR}/MyProject-build"INSTALL_DIR "${PROJECT_BINARY_DIR}/MyProject-install"GIT_REPOSITORY "${git_protocol}://gitlab.com/slckr/MyProject.git"GIT_TAG "origin/multithread2"CMAKE_ARGS
-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-DZLIB_INC_DIR:PATH=${ZLIB_INCLUDE_DIR}
-DZLIB_LIB_DIR:PATH=${ZLIB_LIBRARY_DIR}
-DNIFTI_INC_DIR:PATH=${NIFTI_INCLUDE_DIR}
-DNIFTI_LIB_DIR:PATH=${NIFTI_LIBRARY_DIR}
-DBOOST_INC_DIR:PATH=${BOOST_INCLUDE_DIR}
-DBOOST_LIB_DIR:PATH=${BOOST_LIBRARY_DIR}
-DBOOST_SUBMODULES:STRING=${BOOST_SUBMODULES}
-DMYPROJECT_LIBS:STRING=${MYPROJECT_LIBS}
DEPENDS Nifticlib boost)
endif()

Проблема в том, что когда я пытаюсь связать MyProject с nifticlib или boost, потому что имя библиотеки отличается в зависимости от платформы (которую я обработал при импорте библиотек), связывание завершается неудачно.

Я передаю каталог библиотеки и в MyProject CMakeLists я делаю:

include_directories(${ZLIB_INC_DIR} ${NIFTI_INC_DIR} ${BOOST_INC_DIR})
link_directories(${ZLIB_LIB_DIR} ${NIFTI_LIB_DIR} ${BOOST_LIB_DIR})

target_link_libraries(MyProject zlib znz niftiio nifticdf)

но target_link_libraries терпит неудачу, потому что zlib не найден (но я импортировал его в свою суперстройку). Как я могу сказать MyProject использовать импортированную библиотеку моего супербилда?

Спасибо.