[Scons-users] download builder - tips

[William Deegan]

Phil,

Sorry my mistake, I thought you were pointing at the whole project.

Looks like the problem is that you are adding directories to the list of targets in your Unpack emitter.
Directories depend on their contents by default, so I believe that's what's causing your issue.

If you add:
    target = [x for x in target if not x.endswith('/')]

Before your:
   return target,source
in your __emitter.

The problem should go away.


-=Bill

On Apr 6, 2013, at 4:20 PM, Philipp Kraus <philipp.kraus at flashpixx.de> wrote:


> Hi Bill,

> 

> all files are there and they reproduce the problem ! I don't see your problem.

> You can download all files with a git clone or on top of the repo you can also use a Zip download https://github.com/flashpixx/Storage

> In the subdir "Scons" all data is stored.

> 

> Scons / SConstruct is the test build script stored and Scons / site_scons / site_tools all builds are stored. So you need only download the

> zip, and run scons in the Scons directory

> 

> Do you see any problem?

> 

> Phil

>  

> 

> 

> Am 07.04.2013 um 01:12 schrieb Bill Deegan:

> 

>> Phil,

>> 

>> I'm asking for a minimal system to reproduce the problem.

>> I don't want to download and debug your entire build.

>> 

>> You should be able to reproduce it with just a few files.

>> 

>> -Bill

>> 

>> 

>> On Sat, Apr 6, 2013 at 4:04 PM, Philipp Kraus <philipp.kraus at flashpixx.de> wrote:

>> 

>> Am 07.04.2013 um 00:19 schrieb William Deegan:

>> 

>>> Philk

>>> On Apr 6, 2013, at 2:43 PM, Philipp Kraus <philipp.kraus at flashpixx.de> wrote:

>>> 

>>>> On 2013-04-06 02:41:22 +0200, Philipp Kraus said:

>>>> 

>>>>> thanks to Dirk and Bill for some nice email. I would like to replace my "dirty hacked Scons script" to a little more general code structure and would like to send them into the Scons community.

>>>>> I'm primary writing C/C++ code and uses Scons on OSX, Linux, Windows (MSVC & MinGW) for the building process.

>>>>> Often there exists on my C/C++ project the problem, that the project uses a lot of different libraries eg LAPack, Boost, Dune-FEM .... and these libs must be compiled for the project, so I use Scons for

>>>>> this building process most with a lot of env.Command code and some hacked builders. With a little time, I have forked out my first "hacked builder" to a more "Scons-Way-Builder".

>>>>> It is a little short builder, which downloads any URL data into a file. I have pushed the builder in my repo ( https://github.com/flashpixx/Storage/blob/master/Scons/site_scons/site_tools/URLDownload.py )

>>>>> and a test Sconstruct under https://github.com/flashpixx/Storage/blob/master/Scons/SConstruct

>>>>> This builder replaces the target on default with the filename of the URL, the env setting URLDOWNLOAD_USEURLFILENAME (true | false) can be enabled / disabled this target replacing

>>>>> The next forked builders will be an Unpacking builder with flexible tool use (eg 7-Zip under Windows, tar / gzip / bzip under *nix) and a external builder for compiling extracted sources with cmake, MSVC ...

>>>> 

>>>> I need a little help, because I get on my builders a cyclic dependency on cleaning or on the second run. If I have got a "clean" directory, everything works fine, the download builder creates

>>>> the downloaded file and my unpack builder ( https://github.com/flashpixx/Storage/blob/master/Scons/site_scons/site_tools/Unpack.py ) is run and creates the correct extracting file list.

>>>> If I run after the first run, without cleaning the builder script again, I get an error of the unpack builder that there exists a cyclic depency, an equal error is shown up, if I run "scons -c".

>>>> 

>>>> If I replace in the Unpack.py the line 280 (     return target, source ) to  'return "test", source' the error does not occure, so imho the problem exists in the emitter. The unpack builder returns a list of files & directories in an archive and the download builder get the file. So I hope, that I can download, extract and compile the sources in one short step. (The unpack builder works at the moment with *nix systems, Windows calls are not implementated yet)

>>> 

>>> Can you paste the output you're getting and any more information?

>>> Also what would be great is either a simple SConstruct which demonstrates the issue, or a zip file with minimal amount of files/logic which demonstrates the issue.

>>> 

>>> The more info, the easier it is to help you!

>> 

>> I have post the links to all files, you can download the full code with an example SConstruct: https://github.com/flashpixx/Storage/tree/master/Scons

>> 

>> 

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