problem building MySQL-python python extension with rpath

[pescobar]

The build completes but the rpath sanity check fails. Here you can see the build log
https://gist.github.com/9cc52d50d238aee59e724522b1adcc8f

The important lines seem these but I don't get the reason why it's failing. Any idea? Why this line?

Failed to import module 'easybuild.easyblocks.mysql_python': No module named mysql_python

== 2016-12-10 19:50:41,638 run.py:137 DEBUG run_cmd: running cmd python -c "import MySQLdb" (in /scicore/home/scicore/easybuild/easyconfigs)
== 2016-12-10 19:50:41,755 run.py:433 DEBUG cmd "python -c "import MySQLdb"" exited with exitcode -11 and output:

== 2016-12-10 19:50:41,755 easyblock.py:1277 INFO exts_filter result  -11
== 2016-12-10 19:50:41,756 easyblock.py:1279 INFO Not skipping MySQL-python
== 2016-12-10 19:50:41,756 easyblock.py:1280 DEBUG exit code: -11, stdout/err: 
== 2016-12-10 19:50:41,757 easyblock.py:1674 DEBUG Installing extensions
== 2016-12-10 19:50:41,757 easyblock.py:1698 DEBUG Starting extension MySQL-python
== 2016-12-10 19:50:41,759 easyconfig.py:1100 DEBUG Failed to import module 'easybuild.easyblocks.mysql_python': No module named mysql_python
== 2016-12-10 19:50:41,759 easyconfig.py:1106 DEBUG No module path 'easybuild.easyblocks.mysql_python' found
== 2016-12-10 19:50:41,760 easyconfig.py:1108 DEBUG Module path determined based on software name: easybuild.easyblocks.mysql_python
== 2016-12-10 19:50:41,760 easyconfig.py:1114 DEBUG getting class for easybuild.easyblocks.mysql_python.EB_MySQL_minus_python
== 2016-12-10 19:50:41,762 easyconfig.py:1121 DEBUG error regexp: No module named mysql_python
== 2016-12-10 19:50:41,763 easyconfig.py:1142 DEBUG No class found for easyblock 'None' (software name 'MySQL-python', default fallback: False
== 2016-12-10 19:50:41,763 easyblock.py:1714 DEBUG Obtained class None for extension MySQL-python
== 2016-12-10 19:50:41,765 easyblock.py:1736 DEBUG Obtained class <class 'easybuild.easyblocks.generic.pythonpackage.PythonPackage'> for installing extension MySQL-python```

[boegel]

@pescobar The lack of an actual error message for the failing import is weird, but it seems like this is a segmentation fault, cfr. http://stackoverflow.com/questions/24139389/unable-to-find-out-what-return-code-of-11-means.

Figuring this one out may be very difficult, this is a good candidate for using the rpath toolchain option I think... ;-)

[pescobar]

@boegel that's what I have done by now but I wanted to report the problem.

What puzzles me a little bit are these lines:

DEBUG run_cmd: running cmd python -c "import MySQLdb" (in /scicore/home/scicore/easybuild/easyconfigs)

DEBUG Failed to import module 'easybuild.easyblocks.mysql_python': No module named mysql_python

This extension is using these options:

    ('MySQL-python', '1.2.5', {
        'source_urls': ['https://pypi.python.org/packages/source/M/MySQL-python/'],
        'modulename': 'MySQLdb',
        'source_tmpl': 'MySQL-python-1.2.5.zip',
    }),

Maybe the sanity check is having any problem when using the modulename option for an extension?

[boegel]

@pescobar the failure to import mysql_python is normal, that's just EasyBuild looking for a dedicated easyblock to build & install the mysql-python extension with (but there is none, so it'll fall back to PythonPackage)

Not sure what is causing the segfault though...