WIP: ubuntu 14.04 ppc64le

[jBarz]

Enable ubuntu 14.04 ppc64le.
Have both gcc 4.8 and 4.9 on machine available

[mhdawson]

If you have used this to configure ubuntu1404-ppc64_le-3 I think the next step is to connect it up to the so that we can validate the machine works as a test worker.

The one thing we should probably test as part of that is the selection of the 4.9 versus 4.8 compiler. We should either have a script in the build repo for that or have that script isntalled as part of the ansible setup. It may make sense to be part of what is installed by the ansible scirpts as we'd need to update when we add support for a new compiler level which would also require ansible script updates.

[jBarz]

I have run the ansible script successfuly on ubuntu1404-ppc64_le-3.
To build node using gcc-v4.8, we need to set the following. Equivalent for 4.9.

export CC=/usr/bin/gcc-4.8
export CXX=/usr/bin/g++-4.8
export LINK=/usr/bin/g++-4.8
export LDFLAGS="-Wl,-rpath,$(dirname $($CC --print-file-name libgcc_s.so))"

[mhdawson]

I think next step is create test CI job as clone of existing job and do run against ubuntu1404-ppc64_le-3.

I would like to check in a script into the build repo called something like set_gcc_level that would looks at the files checked out for Node.js (likely the version info) and then sets the required exports.

The main downside is that we'd need a clone of the build repo but I don't think that would be a big deal. @nodejs/build any concerns?

[maclover7]

Checking scripts into the build repo is fine by me. https://github.com/nodejs/build/tree/master/jenkins/scripts has some prior work, if helpful at all.

[maclover7]

ping @jBarz

[mhdawson]

@jBarz The paths don't seem to be quite right based on the ansible setup. I had to add the path to java 8 to get the jenkins agent to start: /home/iojs/jdk8u144-b01/jre/bin/java in jenkins.conf.

jenkins.conf probably either needs to have the path updated like I did or probably better the path so that it include/home/iojs/jdk8u144-b01/jre/bins

whatever the change it will need to be specific to ppcle

[mhdawson]

Testing builds on le-3 here:
https://ci.nodejs.org/job/node-test-commit-plinux_mdawson/21/
https://ci.nodejs.org/job/node-test-commit-plinux_mdawson/22/
https://ci.nodejs.org/job/node-test-commit-plinux_mdawson/23/

[mhdawson]

Tests ran/passed for the 3 combinations.

[mhdawson]

PR for script to select compiler level: #1103 that was tested in runs above on be-3.

[jBarz]

I modified the ansible script to append "/home/iojs/.profile" with
export PATH=/home/iojs/jdk8u144-b01/bin:\$PATH

Is this an acceptable solution?
We are assuming that Jenkins will only run as "iojs".

[maclover7]

@jBarz Seems reasonable to me.

@mhdawson Can you run these scripts again on all ppc machines and confirm everything's ok? After that, please land at will.

[mhdawson]

@maclover7 can you review/approve #1103 as its related to this work.

[maclover7]

@mhdawson Approved 1103. Once this is ready, please feel free to land in master, and then please run on all PPC machines to confirm everything's OK.

[mhdawson]

Unfortunately the change to set the path does not quite work as the script that starts the worker sets the path directly. Will discuss with @jBarz to figure out how to fix.

[mhdawson]

Looks good with latest update from @jBarz

[mhdawson]

Landed as 443f72e