Re: am I understand the tree properly?

Greetngs Bill.

thank you for the tips, I'll take them into account.

regardless Iv'e found my issue, figures it won't work right if you use c&p...

there is one thing I'm curious about, output/data/target_a.data is a byproduct of the creation of output/.stages/h/target_a

so it is logical to output/.stages/g/target_a.

however if I run it on a clean tree, I get and error that the target isn't found, ll output/.stages/g/target_a returns a mach and if I run it again, it works.

is this behavior because it is an inplicit target?

Thanks.

Dagg

Sent: Wednesday, September 15, 2021 at 2:25 AM

From: "Bill Deegan" <[email protected]>

To: "SCons users mailing list" <[email protected]>

Subject: Re: [Scons-users] am I understand the tree properly?

if a file shows as a dependency via the tree, then it's parent should wait for it to be ready.

What do you mean by out of order?

Not the order you expect?

or is a dependency not being met and a builder being run before it's sources are ready?

You can use "--taskmastertrace=FILE" arg to scons to dump debug info on the processing of the dependency tree.

But I'd be very surprised if there was a bug there.

A common error is to put call a builder/Command() with target and source arguments in the wrong order.

Or is it that the file which isn't ready yet is one which is found via a scanner (for example an included header file)?

Also.. if you set a Dir() as a source, it will not be out of date if it's contents change.

On Tue, Sep 14, 2021 at 11:11 AM daggs <[email protected] > wrote:

I see, any tips on how to debug why the build is out of order?

Dagg

Sent: Tuesday, September 14, 2021 at 7:04 PM

From: "Bill Deegan" <[email protected] >

To: "SCons users mailing list" <[email protected] >

Subject: Re: [Scons-users] am I understand the tree properly?

You're making my eye's bleed with that.. ;)

There's no guarantee of order.

That said any target which is "ready" to build will be built when a build slot is available.

ready = nothing builds it's sources, depends, or implicit dependencies, or all those three are already built(or not out of date) at that point in time.

-Bill

On Tue, Sep 14, 2021 at 8:31 AM daggs <[email protected] > wrote:

Greetings,

I'm trying to debug an dependency issue on my build and I want to be sure I understand the deps tree properly, here is the tree:

+-target_a

+-output/.dummy_targets/target_a

+-output/.stages/a/target_a

+-output/.stages/b/target_a

+-output/.stages/c/target_a

+-output/.stages/d/target_a

+-output/.stages/e/target_a

| +-output/.stages/f/target_a

| | +-output/.stages/g/target_a

| | | +-output/.stages/h/target_a

| | | +-src/data_files.ini

| | +-output/data/target_a.data

| +-src/dbs/target_a/a.db

| +-src/dbs/target_a/b.db

+-output/db_daemon.run

+-scripts/start_db_daemon.sh

so, as I understand it, scripts/start_db_daemon.sh, src/data_files.ini, src/dbs/target_a/a.db and src/dbs/target_a/b.db

are the first targets to get handled, then output/db_daemon.run and output/.stages/h/target_a.

next output/.stages/f/target_a, followed by output/.stages/f/target_a, output/.stages/e/target_a and from there is it simple.

am I right?

Thanks,

Dagg

,

,

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