SET(PREFIX_ext_boost "${EXTPREFIX}" )
if(MINGW)
   string(REGEX REPLACE "([0-9])\\.([0-9])(\\.[0-9])?" "\\1\\2"
      KRITA_boost_COMPILER_VERSION ${CMAKE_CXX_COMPILER_VERSION})
   ExternalProject_Add(
       ext_boost

       DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
       
       URL http://files.kde.org/krita/build/dependencies/boost_1_61_0.zip
       URL_MD5 015ae4afa6f3e597232bfe1dab949ace
       
       CONFIGURE_COMMAND <SOURCE_DIR>/bootstrap.bat gcc --prefix=${PREFIX_ext_boost}
       BUILD_COMMAND <SOURCE_DIR>/b2.exe -j${SUBMAKE_JOBS} linkflags=${SECURITY_SHARED_LINKER_FLAGS} --with-system --build-dir=build-dir --prefix=${PREFIX_ext_boost} toolset=gcc variant=release link=shared threading=multi architecture=x86 install
       INSTALL_COMMAND ""
       INSTALL_DIR ${EXTPREFIX_boost}

       UPDATE_COMMAND ""
       BUILD_IN_SOURCE 1
   )
   ExternalProject_Add_Step(
       ext_boost
       post_install
       COMMAND ${CMAKE_COMMAND} -E copy ${PREFIX_ext_boost}/lib/libboost_system-mgw${KRITA_boost_COMPILER_VERSION}-mt-1_61.dll ${PREFIX_ext_boost}/bin/
       DEPENDEES install
   )
else()
	ExternalProject_Add( ext_boost
        	DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR}
            URL https://boostorg.jfrog.io/artifactory/main/release/1.71.0/source/boost_1_71_0.tar.bz2
        	URL_HASH SHA256=d73a8da01e8bf8c7eda40b4c84915071a8c8a0df4a6734537ddde4a8580524ee

        	CONFIGURE_COMMAND <SOURCE_DIR>/bootstrap.sh --prefix=${PREFIX_ext_boost} --with-libraries=system
	        BUILD_COMMAND <SOURCE_DIR>/b2 -j${SUBMAKE_JOBS} install
	        INSTALL_COMMAND ""
        	INSTALL_DIR ${PREFIX_ext_boost}

	        UPDATE_COMMAND ""
	        BUILD_IN_SOURCE 1
)
endif()
