Re: Forcing a script to bomb, etc.

Michael Jennings wrote:
> On Friday, 12 October 2007, at 10:10:13 (-0700),
> Philip Prindeville wrote:
>
>   
>>  So... a few miscellaneous questions.
>>
>>  First, where is the current authoritative documentation?  I've not found 
>>  %{!? documented anywhere.
>>     
>
> /usr/share/doc/rpm-*/conditionalbuilds 
>   

Ok, thanks.  Looking at the example:

%if %{?_with_ssl:1}%{!?_with_ssl:0}

that's a little more complicated than it needs to be, isn't it?

I've seen:

%if 0%{?_with_ssl:1}

And that seems to work equally well...


>>  Second, is there a guide to what macros are common on all platforms, like 
>>  %{with and %{without?
>>     
>
> Not really, but the stuff in /usr/share/doc is a good start.
>   

Sigh.


>>  Third, can I force an RPM to error with a message is a standard
>>  fashion, if it finds (for instance) that it's being built with a
>>  combination of incompatible --with options?
>>     
>
> It's a shell script.  Do whatever you like.
>   

Right, but I don't want to capture the shell exit value of %(...) as an 
expression....  I want to bomb out.

I suppose I could have:

%prep
...
%if !<some sanity tests here>
    echo "This can't possibly be correct." 1>&2
    exit 1
%endif


>>  Fourth, is it philosophically preferable to have a package build by
>>  default with everything, but have the package turn stuff off with
>>  --without xxx, or build the smallest supportable package, but turn
>>  things on via rpmbuild --with arguments?
>>     
>
> It's your package; do it however you want.  I prefer to default to
> building everything and require manual intervention to turn things
> off.  Makes things more autobuilder-friendly.
>   

That's what I wanted to do, but it got slapped down.

We could add an AutobuilderHint: field to the header that wouldn't do 
anything, but that autobuilders could grovel out and use as the default 
set of arguments...


>>  Lastly, where's the documentation on writing and using macros that take 
>>  arguments?
>>     
>
> See above.
>
> Michael
>
>   

doc/macros it looks like.

-Philip