link stdc++ (for physfs on linux) only when targetting 32bit
(grafted from db108c85131501e1ac4ded2758f742836f83f4b5)
if(WIN32 AND NOT UNIX) file(GLOB DLLs *.dll) file(GLOB ICOs *.ico) install(FILES ${DLLs} ${ICOs} DESTINATION ${target_library_install_dir})endif(WIN32 AND NOT UNIX)