After setting an automatic code coverage tool, I just plugged an automatic scan-build on the LLVM toolchain trunk:
http://buildd-clang.debian.net/scan-build/
Note that:
polly is currently not analyzed. I had to disable the build until the new version of cloog is available.
A week after the Euro LLVM conference, I am glad to share the results I presented and discussed during the event.
1) Parallel building infrastructure using clang instead of gcc
Based on the work that Alexander Pashaliyski and I did during the GSoC 2012, we are now able to automatically rebuild each package uploaded in Unstable transparently. Results are published here:
http://buildd-clang.debian.net/
This provides a quick and easy way to any Debian contributors or upstream packaged in Debian to check how the package behaves with clang.
For Debian Developer and maintainer, a per maintainer view is also provided. This will list all packages maintained by a Debian packager. My page as example
After the Debian new packages, removal and bugs feeds (see the previous blog posts), I also plugged a feed with the last uploads in the archive:
Debian uploads on Identi.ca
Debian uploads on Twitter
As a reminder, here is the list.
For identi.ca:
Debian uploads
Debian NEW queue
Debian bugs
Debian removed packages
Lately, I have been working on providing nightly packages of the whole LLVM toolchain.
With the help of folks from Intel, Google and Apple, I am happy to announce the publication of these packages:
http://llvm.org/apt/
Built through a Jenkins instance (http://llvm-jenkins.debian.net/), packages for Debian wheezy and Unstable and Ubuntu quantal, precise and raring are created twice a day.
After the studies of the rebuild of the Debian archive using clang 2.9 & 3.0 and 3.1, the results of the 3.2 rebuild have been published on http://clang.debian.net.
The percentage of failure is the same as clang 3.1: 12.1% of failure. That means that on 18264 packages, 2204 failed to be built with clang (it was 17710/2137 with the version 3.1).
One of the drawback of C is the hard memory management.
It is because of this aspect that Clang provides a way to detect, at runtime, memory errors. Called Address Sanitizer, it allows, while the program is running, to keep track of the memory and detect typical errors (out-of-bound accesses, use of a variable after a free, etc).
A bit more than two weeks after the Mini Debconf in Paris, I am glad to say that the videos of the event are finally published (the sound is not very good for the 4 first presentations, sorry about that).
They will be also available on the new IRILL website with a video player when ready.
All slides are also available on the page of the event.
Next week end, November 24th and 25th, the mini Debconf will take place at EPITA in Paris.
Mehdi Dogguy and I worked hard on the organization and on building a great program for this 2012 conference. This mini debconf will cover many subjects like Gnome (both as upstream and downstream), the Release team, how the Linux is packaged in Debian, etc.
The keynote will be "Free software and Debian, 20 years after" by Roberto Di Cosmo.
Thanks to the work of Andrej Belym, Debian has now a new C++ standard library. This work has been done in the context of the Google Summer of Code 2012.
Available in Debian Experimental, this new packages provides both the runtime libraries (libc++abi1) and the C++ headers (libc++-dev).
A couple week ago, during the last debconf (Debian Conference) in Managua/Nicaragua, I presented the latest developments about the inclusion of clang in the Debian architecture.
To sum up (details are available in the slides and the video), the rebuild of the Debian archive with Clang 3.1 increased the number of failures from 8.8 to 12.1%. The main reason is that further checks have been added to clang.
During my various chats and presentations on LLVM/Clang, one of the common criticism on LLVM/Clang is about the Apple's (supposed?) control on the platform.
Even if I am not concerned by this concern, here are some statistics about the development. Basically, I used the git history to build a list of all the author. If domain names were clear (ex: @google.com, @apple.com, etc), I used them for the paternity of the commit. If there were not clear (ex: @gmail.com, @me.com), I dig on the web to find the employer (Linkedin was my friend).
A couple weeks ago, I have been interviewed by the news site "Free Libre open source software for science and engineering" about Scilab and my work in Scilab Enterprises.
I am happy to share it:
http://www.floss4science.com/scilab-an-interview-with-sylvestre-ledru/.
Released a few days ago, I am happy to announce that LLVM and clang 3.1 are already available in the Debian archive in Unstable. RC versions were already available for the last few weeks in Debian experimental. They are very likely to be part of wheezy.
We will soon try a new rebuild of the Debian archive with the version 3.1.
From February 17 to 19th 2012, between 10 to 30 hackers met at IRILL's offices to squash as many bugs as possible for the Wheezy release.
Besides about 42 pizzas, more than one hundred bugs (104 to be precise) have been fixed. Among them, 18 of them were fixed by removing old/unmaintained/deprecated packages from the Debian archive.
Back in October 2011, I blogged about the removal of the sun-java6 package from the Debian archive.
Even if Openjdk 7 is just great, some corporations still need to use the non-free sun-java6 packages.
For perform this task, Cédric Pineau and I brought back an old package from the archive called java-package.
Recently, I have been working on a side project for Debian. The goal was to rebuild of the Debian archive (the distribution) with clang, a new C/C++ compiler.
clang is now ready to build software for production (either for C, C++ or Objective-C). This compiler is providing many more warnings and interesting errors than the gcc suite while not carrying the same legacy as gcc.
This rebuild has several goals. The first one is to prove (or not) that clang is a viable alternative. Second, building a software with different compilers improves the overall quality of code by providing different checks and alerts.
Yesterday, I uploaded hdf5 1.8.8 in unstable. This new version, which has been available in experimental for a while, is a major step in the HDF5 packaging.
For those who are using this package, besides the switch from version 1.8.6 to 1.8.8, the changes are the following:
Next February, 17 to 19th, a Bug Squashing Party (BSP) is organized at IRILL offices (disclosure: I work for IRILL part time), close to Place d'Italie in Paris.
The principle of a BSP is to gather Debian contributors to tackle a maximum of bugs in Debian.
As said in one of my previous blog post, we, Debian, were going to remove sun-java6 packages from the archive once critical security issues would come. It was supposed to happen sooner and later and here we are. The version 29 (see the #645881 Debian bug) of the Oracle proprietary JVM has been released. It fixes some critical issues but, because of the DLJ removal, Debian is no longer able to distribute it.
After a request from Olivier Berger, I developed the Removed packages feed for Debian. This feed lists packages removed from the Debian Archive.
Debian removed packages on Identi.ca
Debian removed packages on Twitter
For more information about removed packages