Re: Detecting version in a SPEC file

[Roland McGrath <roland redhat com>]

Your Buildrequires are your declaration of what is required for the build
the spec wants to do.  You don't want it to depend on what happens to be
around.

I think what you want to do is:

%define gnupg_version 1.2
%if "%fedora" >= "6"
%define gnupg_version 1.4
%endif
%if "%rhel" >= "5"
%define gnupg_version 1.4
%endif

...

BuildRequires: gnupg = %{gnupg_version}

...

%check

%if "%gnupg_version" = "1.2"
this data
%else
that data
%endif