How do you specify $? options in an rpm file

I'm trying to build freetds but want it to include the static libraries in freetds-devel. It looks like it takes an option _with_static but it's unclear to specify it. Here's a section of the RPM file:

%build
%configure \
        --disable-dependency-tracking \
        --disable-rpath \
        %{!?_with_static: --disable-static} \
        --with-tdsver="4.2" \
        --with-unixodbc="%{_prefix}" \
        --enable-msdblib \
        --enable-sybase-compat \
        --with-gnutls

So short of altering the spec开发者_如何学编程 file to have just the options I want how do I specify _with_static when I run rpmbuild?

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Pass --with static to rpmbuild.