[SOLVED] Trouble installing libxcb for Xorg

racerdog · 07-22-2013, 07:04 PM

I'm working my way through installing Xorg-7.7 in LFS 7.3.
While installing libxcb-1.9.1 make fails with:

Code:

Making all in src
make[1]: Entering directory `/sources/libxcb-1.9.1/src'
/usr/bin/python ./c_client.py -p /usr/lib/python3.3/site-packages /usr/share/xcb/xproto.xml
Traceback (most recent call last):
  File "./c_client.py", line 2, in <module>
    from xml.etree.cElementTree import *
  File "/usr/lib/python2.7/xml/etree/cElementTree.py", line 3, in <module>
    from _elementtree import *
ImportError: No module named _elementtree
make[1]: *** [xproto.c] Error 1
make[1]: Leaving directory `/sources/libxcb-1.9.1/src'
make: *** [all-recursive] Error 1

Both Python 2.7 and Python 3.3 are installed. I had 3.3 but saw that libxcb requires xcb-proto-1.8 which in turn requires Python 2.7.

I'm not totally confident parsing this all out. Looking at the above I thought might try uninstalling one of the Python versions but 1) I don't know how to do that, and 2) I don't know which to remove.

druuna · 07-23-2013, 05:41 AM

Quote:

Originally Posted by racerdog

2) I don't know which to remove.

As mentioned on the Python-2.7.5 page:

Quote:

This version is for backward compatibility with other dependent packages.

Removing Python 3.3.2 would seem the logical choice.

Quote:

Originally Posted by racerdog

1) I don't know how to do that

Assuming you used the Python-3.3.2 build instructions: Have a look at the Contents part at the bottom of the page, this mentions what is installed and where it is installed. Which seems like a good starting point to remove it.

Quote:

Originally Posted by racerdog

2) I don't know which to remove.

But before you start removing things: Are you sure you followed the build instructions to the letter and installed/configured all the mentioned dependencies correctly?

racerdog · 07-23-2013, 06:36 AM

Thanks for the reply -

Quote:

Removing Python 3.3.2 would seem the logical choice.

Well, thing blow up in the 2.7.5 file /usr/lib/python2.7/xml/etree/cElementTree.py. There is, in fact, "no module named _elementtree." The correcponding part of 3.3.2 does not try to load _elmenttree but uses a differently-named module.

Quote:

But before you start removing things: Are you sure you followed the build instructions to the letter and installed/configured all the mentioned dependencies correctly?

This Xorg section of BLFS where I'm following does have a bit to to-ing and fro-ing to catch dependencies - it can't just be followed in order. So I'll probably roll back to a backup from before I started Xorg and try again (isn't backup grand?).

I tossed this question out there on the chance that someone had seen something similar.

I can do that today so I'll leave this thread open for a bit more.

druuna · 07-23-2013, 07:00 AM

Looking at the Required Dependencies, these need to be installed in the given order:

- pkg-config-0.28
- libffi-3.0.13
- Expat-2.1.0
- Python-2.7.5
- libxml2-2.9.1
- libxslt-1.1.28
- util-macros-1.17
- Xorg Protocol Headers
- libXau-1.0.8
- libXdmcp-1.1.1
- xcb-proto-1.8

And finally:

- libxcb-1.9.1

The xcb-proto-1.8 chapter mentions that either python 2.7.5 or python 3.3.2 can be installed, but the libxml2-2.9.1 chapter only mentions python 2.7.5.

racerdog · 07-23-2013, 11:06 AM

I removed both python versions and retraced somem steps and it looks like broken bit of python was OK after I re-installed libxml2-2.9.1 & libxml2-2.9.1. Dunno what ever went wrong but things are looking better now.