failed to install sage 4.7.1 on ubuntu 11.10

[surfer]

i downloaded sage from sagemath.org ( sage-4.7.1-linux-64bit-ubuntu_10.04.1_lts-x86_64-Linux ), unpacked it and tried to do the first run as root. this produced the following error message:

$ sudo ./sage/sage 
----------------------------------------------------------------------
| Sage Version 4.7.1, Release Date: 2011-08-11                       |
| Type notebook() for the GUI, and license() for information.        |
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/opt/sage/local/bin/sage-ipython", line 18, in <module>
    import IPython
  File "/opt/sage/local/lib/python2.6/site-packages/IPython/__init__.py", line 58, in <module>
    __import__(name,glob,loc,[])
  File "/opt/sage/local/lib/python2.6/site-packages/IPython/ipstruct.py", line 22, in <module>
    from IPython.genutils import list2dict2
  File "/opt/sage/local/lib/python2.6/site-packages/IPython/genutils.py", line 59, in <module>
    from IPython.external.path import path
  File "/opt/sage/local/lib/python2.6/site-packages/IPython/external/path.py", line 35, in <module>
    import md5
  File "/opt/sage/local/lib/python/md5.py", line 10, in <module>
    from hashlib import md5
  File "/opt/sage/local/lib/python/hashlib.py", line 136, in <module>
    md5 = __get_builtin_constructor('md5')
  File "/opt/sage/local/lib/python/hashlib.py", line 63, in __get_builtin_constructor
    import _md5
ImportError: No module named _md5

any ideas how this could be fixed?

[grappler]

I can report that an attempt to compile the source code

sage-4.7.1-linux-64bit-ubuntu_10.04.1_lts-x86_64-Linux.tar.lzma

on a new installation of the official release of ubuntu 11.10

gives the same error

ImportError: No module named _md5
make: *** [doc-html] Error 1

[vibration]

I had the same issue. After installation of the package libssl0.9.8 it compiled without error.

[ptg21]

Thanks so much for your post - very much appreciated!

[grappler]

Thanks Vibration - works perfectly!

[MentatGhola]

Aye I had the same error and sure enough installing libssl0.9.8 fixed it.

[PGScooter]

It's great to see all of the confirmed reports of success. It's always nice when someone takes a little time to confirm a solution.

I've had several installs be fixed by non-obvious packages like this. Is this considered a bug? if so, whom do we report it to? I'm guessing SAGE, but would they be interested?

[meng1usa]

libssl0.9.8 that works! finally! Thank you!

[surfer]

late reply. sorry.

indeed:

$ sudo apt-get install libssl0.9.8

is all it takes to get sage sage-4.7.1-linux-64bit-ubuntu_10.04.1_lts-x86_64-Linux running on oneiric!

thanks vibration and everyone who posted a success report!

marking the thread solved.

[rtalcott]

Vibration:
Thank You! I have never had this issue before and I greatly appreciate the solution!
rt