Re: matching source and target's behavior between func and cmd actions

Go take a look at :
https://scons.org/doc/production/HTML/scons-man.html#builder_objects
Search for "generator"
Likely that's what you want.
Did you take a read through the manpage first?
There's lots of useful info there.. :)


On Sat, Jun 20, 2020 at 4:05 PM Gary Granger <[email protected]> wrote:

> If you want to use different commands or change the string printed when
> the command executes, that implies you should use different Builder
> instances, with different Actions or cmdstr or both.  It sounds like you're
> trying to parameterize a build task within a single python function,
> instead of using the mechanisms SCons already provides for parameterizing
> build tasks, namely Builder and Action.  If you really have functionality
> in the task() function which you want to share across multiple Builder
> instances, then I would break out the shared functionality into other
> functions which your Builder tasks then call.  But now I'm just guessing,
> because I doubt I really understand what you're trying to do from your
> example.
> On 6/20/20 11:52 AM, daggs wrote:
>
> Greetings Gary,
>
> that helps me in this specific case but not in the more general case as I
> might want to use .dirname or pass the cmd.
>
> I thought of using regex replace like this:
> def task(source, target, env):
>     print(env['cmd'])
>     new_cmd = re.sub("\$TARGET", env['cmd'], 'aaa')
>     print('['+new_cmd+']')
>
> but for the following cmd:
> ${SOURCE}<=>$SOURCE<=>${SOURCES}<=>$SOURCES<=>${TARGET}<=>$TARGET<=>$SOURCES.dirname<=>${SOURCE}.dirname<=>$TARGET.abspath
> I get this output:
> [aaa]
>
>
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