Comments on: Installing Duplicity on Mac OS X

By: Rob Oakes

Rob Oakes — Mon, 15 Mar 2010 14:34:56 +0000

The version of python that ships with Snow Leopard is a very strange duck. Apparently, it can execute both 32 bit and 64 bit code, but getting the code to compile can be a bit difficult. This is the problem that I've run into with PyQt. Installing the pre-built binaries (from the Qt website) doesn't work (or at least it doesn't work well). If you build Qt yourself for x86_64, then you can get PyQt to build and install, but will get errors at run-time. I have not yet found aa work-around, or the magical set of compiler commands and luck which will yield success.

If anyone else has ideas or workarounds, I'd love to hear them.

By: Henrik Olsen

Henrik Olsen — Mon, 15 Mar 2010 07:14:44 +0000

Might be that Python 2.6 is only 64-bit on OS X 10.6. Hmmmm, then what to do...? When gnugpg apparently needs to run in 32-bit.

By: Henrik Olsen

Henrik Olsen — Mon, 15 Mar 2010 07:05:40 +0000

Using

./configure CC="gcc -arch i386"

for all dependencies (as needed for gnugpg according to http://macgpg.sourceforge.net/), and having used

CFLAGS="-arch i386 "
python setup.py --librsync-dir=/usr/local build
python setup.py install --prefix=/usr/local
export PYTHONPATH='/usr/local/lib/python2.6/site-packages/'

for the final duplicity install (to get it in /usr/local), I got an apparently clean install.

But... Running a simple version check gives this

duplicity -V
Traceback (most recent call last):
File "/usr/local/bin/duplicity", line 41, in
from duplicity import collections
File "/usr/local/lib/python2.6/site-packages/duplicity/collections.py", line 29, in
from duplicity import path
File "/usr/local/lib/python2.6/site-packages/duplicity/path.py", line 36, in
from duplicity import librsync
File "/usr/local/lib/python2.6/site-packages/duplicity/librsync.py", line 29, in
import _librsync
ImportError: dlopen(/usr/local/lib/python2.6/site-packages/duplicity/_librsync.so, 2): Symbol not found: _rs_file_copy_cb
Referenced from: /usr/local/lib/python2.6/site-packages/duplicity/_librsync.so
Expected in: flat namespace
in /usr/local/lib/python2.6/site-packages/duplicity/_librsync.so

Googling _rs_file_copy_cb only finds one entry, suggesting using Python 2.6 instead of Python 2.5 (already using 2.6). Any ideas/similar experience?

By: Rob Oakes

Rob Oakes — Sun, 14 Mar 2010 22:43:42 +0000

Thanks for the head up. I have had a lot of trouble compiling software on Snow Leopard. It's been a while since I tried to compile NCFTP. I have been having serious problems with PyQt and have not been using Time Drive on Mac for a while. It's probably time that re-visit this topic and update the instructions.

By: Henrik Olsen

Henrik Olsen — Sun, 14 Mar 2010 21:02:27 +0000

All above libraries missing above have been manually downloaded and installed now.

By the way, ncftp won't compile on a clean Snow Leopard install, since the configure script refers to the 10.4 SDK which is not in Xcode in OS X 10.6. Correct as needed. I have informed ncftp maintainers about this now.

By: Henrik Olsen

Henrik Olsen — Sun, 14 Mar 2010 11:50:23 +0000

Running .configure on gnupg-2.0.15 on Mac OS X 10.6.2 gives me this ending:

configure:
***
*** You need libgpg-error to build this program.
** This library is for example available at
*** ftp://ftp.gnupg.org/gcrypt/libgpg-error
*** (at least version 1.4 is required.)
***
configure:
***
*** You need libgcrypt to build this program.
** This library is for example available at
*** ftp://ftp.gnupg.org/gcrypt/libgcrypt/
*** (at least version 1.4.0 using API 1 is required.)
***
configure:
***
*** You need libassuan to build this program.
*** This library is for example available at
*** ftp://ftp.gnupg.org/gcrypt/libassuan/
*** (at least version 2.0.0 (API 2) is required).
***
configure:
***
*** You need libksba to build this program.
*** This library is for example available at
*** ftp://ftp.gnupg.org/gcrypt/libksba/
*** (at least version 1.0.2 using API 1 is required).
***
configure:
***
*** It is now required to build with support for the
*** GNU Portable Threads Library (Pth). Please install this
*** library first. The library is for example available at
*** ftp://ftp.gnu.org/gnu/pth/
*** On a Debian GNU/Linux system you can install it using
*** apt-get install libpth-dev
*** To build GnuPG for Windows you need to use the W32PTH
*** package; available at:
*** ftp://ftp.g10code.com/g10code/w32pth/
***
configure: error:
***
*** Required libraries not found. Please consult the above messages
*** and install them before running configure again.
***

Apparently a lot of libraries are missing.