[Scons-users] Forcing projects to build in order

[William Blevins]

On Thu, Aug 6, 2015 at 11:09 AM, Bill Deegan <bill at baddogconsulting.com>
wrote:

>
>
> On Thu, Aug 6, 2015 at 8:04 AM, William Blevins <wblevins001 at gmail.com>
> wrote:
>
>> I cannot think of many (if any) good reasons to perform CWD.
>>
>> Can you modify your build to work without?
>> On Thu, Aug 6, 2015 at 10:26 AM, Bill Deegan <bill at baddogconsulting.com>
>> wrote:
>>
>>> Ora,
>>>
>>> Why do you want to force build order and/or limit parallelism?
>>>
>>>
>> He is performing "change working directory" commands which cause issues
>> with parallel builds.
>>
>
> When I run into those I typically do env.Command(target,source,"cd xyz; do
> actual command")  or wrap said command in a script and run that from the
> command.
>

That makes sense.  Keeps the CWD commands outside the SCons context :)


>
>>
>>> -Bill
>>>
>>> On Thu, Aug 6, 2015 at 3:58 AM, Ora <orshalev at gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> My script builds several different projects which are not necessarily
>>>> related.   How can I force those projects to build in a certain order?
>>>>
>>>> That is, I have three projects: a, b and c.
>>>> I want 'b' to start building only after 'a' finishes, and for 'c' to
>>>> start building only after 'b' finishes.
>>>>
>>>> This is necessary in order to avoid problems with changing directories
>>>> during parallel builds.
>>>>
>>>> I tried using 'Requires', with every target requiring the target before
>>>> it.
>>>> Requires (b, a)
>>>> Requires (c, b)
>>>>
>>>> But that doesn't solve the problem because, if I understood correctly,
>>>> it only tells Scons that it should finish building 'a' before it finishes
>>>> building 'b', and doesn't prevent it from compiling both projects at the
>>>> same time.
>>>>
>>>> Any suggestions on how to deal with this issue would be appreciated.
>>>>
>>>> Thanks in advance,
>>>> Ora
>>>>
>>>> _______________________________________________
>>>>
>>>
>
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