AC_ARG_ENABLE(ps-doc, [ --enable-ps-doc build PostScript documentation [default=no]], , enable_ps_doc=no)
AC_ARG_WITH(cint, [ --with-cint=CINTSYSDIR build GiNaC-cint C++ interpreter [default=no]], , with_cint=no)
AC_ARG_ENABLE(ps-doc, [ --enable-ps-doc build PostScript documentation [default=no]], , enable_ps_doc=no)
AC_ARG_WITH(cint, [ --with-cint=CINTSYSDIR build GiNaC-cint C++ interpreter [default=no]], , with_cint=no)