how to know if a rpm has support for something

[ESGLinux]

Hello thanks for your answers.

I did what you have said and in my particular case with postfix I have this:

%define LDAP 2
%define MYSQL 0
%define PCRE 1
%define SASL 2
%define TLS 1
%define IPV6 1
%define POSTDROP_GID 90
%define PFLOGSUMM 1

I suppose this means  that I have no MYSQL support. So I have to recompile
it. ok no problem.

but here is my second question:

Do I lose the support I have bought to Redhat if I recompile this package?

thanks again,

ESG

2009/5/21 Nigel Wade <nmw at ion.le.ac.uk>

> ESGLinux wrote:
>
>> Hello,
>>
>> I have a general question and a particular question.
>>
>> I begin with the particular question. I want to know if this rpm:
>> rpm -qi postfix
>>
>
>  has mysql and quota support.
>>
>> and in general, how can I see how was compiled a rpm to know what  it is
>> built on it and what not. ?
>>
>> Thanks in advance
>>
>>
> In general you would download the source RPM, install it and look at the
> spec file and the build configuration files. If the package doesn't support
> options you want you can often modify these to suit your requirements, and
> rebuild the RPM.
>
> --
> Nigel Wade, System Administrator, Space Plasma Physics Group,
>            University of Leicester, Leicester, LE1 7RH, UK
> E-mail :    nmw at ion.le.ac.uk
> Phone :     +44 (0)116 2523548, Fax : +44 (0)116 2523555
>
>
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