How can I determine if a function is available?

[Daniel J. Luke]

On Apr 12, 2007, at 10:37 PM, Boey Maun Suang wrote:
> As far as I can tell, however, work on base to allow for executing $ 
> {build} in multiple directories would probably be necessary to deal  
> with curlhandle and nefu, as well as with the dovecot-sieve plugin  
> that I've been trying to write a port for.  I haven't looked at the  
> other two, but the dovecot-sieve source has been written on the  
> premise that it will be extracted in a directory _adjacent_ to the  
> main dovecot sources (i.e. ${blah}/dovecot-${version} and ${blah}/ 
> dovecot-sieve-${version}), _and_ that that it will be build against  
> the main dovecot sources _in the places in which the object files  
> will be emitted by default in the dovecot build directory_.  It  
> seems like an awful lot of hacking on the Makefiles (which I'm not  
> comfortable about doing just yet) would be needed to get dovecot- 
> sieve to work without using [command build], either as a variant or  
> as a separate port.

Instead of [command build] you could do what the build command would  
be doing...

ie, system "cd whatever/ && make"

It's not ideal (and probably base/ should be enhanced to have hooks  
so you don't have to do that sort of thing), but it doesn't involve  
using internal API.

> If anyone can think of a nicer way of fixing the latter than by  
> base allowing for the running of ${build} in multiple directories,  
> I'm all ears (or eyes), but I can't see a better way of doing it.

--
Daniel J. Luke
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