Launchpad itself

dh_scour breaks the build of fritzing-parts package in my launchpad ppa

Asked by Enrique Hernández Bello

Hello,

I tried to build[1] the fritzing-parts in my Launchpad PPA[2] for Fritzing[3] and, after two hours and a half, build terminates unexpectedly showing following message:

> Session terminated, terminating shell...make: *** wait: No child processes. Stop.
> make: *** Waiting for unfinished jobs....
> make: *** wait: No child processes. Stop.
> ...terminated.
> Build killed with signal TERM after 150 minutes of inactivity

The full buildlog is here:

- https://launchpadlibrarian.net/207656524/buildlog_ubuntu-vivid-amd64.fritzing-parts_0.9.2b%2Bdfsg-1~ppa1~vivid1_BUILDING.txt.gz

Build time is too long for this package. The most time, dh_scour runs for all svg files of my package failing with a timeout.

How I can solve this?

Thanks.

[1] https://launchpad.net/~ehbello/+archive/ubuntu/fritzing/+build/7478585
[2] https://launchpad.net/~ehbello/+archive/ubuntu/fritzing/+packages
[3] http://fritzing.org/

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William Grant
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Revision history for this message
William Grant (wgrant) said : 		#1

Have you tried building it locally? Builds are only terminated after 2.5 hours of complete silence, so it sounds like scour might be hanging.

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Enrique Hernández Bello (ehbello) said : 		#2

Yes, perfectly built under a pbuilder configuration. Build is successful in a short time, exactly in 2m11.435s.

The local buildlog shows that dh_scour is not running:

> # only call dh_scour for packages in main
> if grep -q '^Component:[[:space:]]*main' /CurrentlyBuilding 2>/dev/null; then dh_scour -pfritzing-parts ; fi
> dh_md5sums -pfritzing-parts

Revision history for this message
William Grant (wgrant) said : 		#3

What if you force it to run dh_scour?

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Enrique Hernández Bello (ehbello) said : 		#4

I forced to run dh_scour and it was successfully built. However, on my computer, it took "slightly" more time, exactly 5 hours 34 minutes and 40 seconds. I think the problem is in the timeout of 150 minutes limited by Launchpad.

Revision history for this message
Best William Grant (wgrant) said : 		#5

The problem is rather that dh_scour takes unreasonably long. You'll need to either disable dh_scour for your package or make it quicker.

This doesn't show up in Ubuntu's fritzing builds because Ubuntu's cdbs package only runs dh_scour for packages in main, and fritzing is in universe. But all PPA packages are in main, so dh_scour runs on PPA builds of fritzing.

Revision history for this message
Enrique Hernández Bello (ehbello) said : 		#6

I can read in buildlogs that there are two files that takes the most of build time:

> scour 0.26
> Copyright Jeff Schiller, Louis Simard, 2010
> File: sparkfun-displays_lcd-g12864_breadboard.svg
> Time taken: 5865.89s
> Number of elements removed: 16682
> Number of attributes removed: 0
> Number of unreferenced id attributes removed: 0
> Number of style properties fixed: 0
> Number of raster images embedded inline: 0
> Number of path segments reduced/removed: 39
> Number of bytes saved in path data: 50794
> Number of bytes saved in colors: 24579
> Number of points removed from polygons: 0
> Number of bytes saved in comments: 0
> Number of bytes saved in id attributes: 0
> Number of bytes saved in lengths: 2
> Number of bytes saved in transformations: 0
> Original file size: 1836445 bytes; new file size: 1455636 bytes (79.26%)
> cmpsvg: python-rsvg not installed, cannot compare SVG images

> scour 0.26
> Copyright Jeff Schiller, Louis Simard, 2010
> File: sparkfun-displays_lcd_cfax_breadboard.svg
> Time taken: 1599.41s
> Number of elements removed: 8395
> Number of attributes removed: 8200
> Number of unreferenced id attributes removed: 0
> Number of style properties fixed: 0
> Number of raster images embedded inline: 0
> Number of path segments reduced/removed: 11
> Number of bytes saved in path data: 81
> Number of bytes saved in colors: 24579
> Number of points removed from polygons: 0
> Number of bytes saved in comments: 0
> Number of bytes saved in id attributes: 0
> Number of bytes saved in lengths: 7
> Number of bytes saved in transformations: 51
> Original file size: 1245462 bytes; new file size: 857983 bytes (68.88%)
> cmpsvg: python-rsvg not installed, cannot compare SVG images

I ran scour manually and also takes a long time. It ends successfully so I don't know how I can make dh_scour quicker without changing the upstream sourcecode.

How I can disable dh_scour in my package? I tried to add an override in my debian/rule file but CDBS ignores it.

Revision history for this message
William Grant (wgrant) said : 		#7

You may have to override binary-makedeb-IMPL/%, but I'm really not sure -- I haven't used CDBS in many years.

Revision history for this message
Enrique Hernández Bello (ehbello) said : 		#8

Thanks William Grant, that solved my question.

Revision history for this message
Enrique Hernández Bello (ehbello) said : 		#9

I removed my pack CDBS in favor of simply debhelper and the problem is solved. I realized that the first was not necessary.