Re: [libvirt] [PATCH] spec: Guess rhel/fedora macros from dist

On 03/16/2011 05:54 AM, Jiri Denemark wrote: > --- > If anyone knows how to make rpm to evaluate %(...) immediately and not > at every appearance of rhel/fedora, that would be really cool. Figured it out without lua: Use %{expand:} to only encounter %define after the shell substitution has completed (that is, instead of defining a macro to be a shell substitution, we use shell substitution to conditionally define a macro to be a constant value). # If neither fedora nor rhel was defined, try to guess them from %{dist} %if !0%{?rhel} && !0%{?fedora} %{expand:%(echo "%{?dist}" | sed -ne 's/^\.el\([0-9]\+\).*/%%define rhel \1/p')} %{expand:%(echo "%{?dist}" | sed -ne 's/^\.fc\?\([0-9]\+\).*/%%define fedora \1/p')} %endif Works on RHEL 5, too, since it doesn't use lua.