Thanks a lot!
It was a linking problem. I applied the patch and I it works for both
python2 and python3.
For those who are interested you can choose to the python version with
the PYTHON variable:
make install # use "python" so it depends on your system configuration
make install PYTHON=python2 # for python 2 explicitly
make install PYTHON=python3 # for python 3 explicitly
I have only tested read_i2c_block_data write_i2c_block_data for python
3.2 and python 2.7.
I think you can push these patchs upstream.
Thanks again,
Michael Mercier
Le jeu. 22 janv. 2015 à 11:49, Jean Delvare <jdelvare@xxxxxxx> a
écrit :
Hi again Michael,
On Thu, 22 Jan 2015 09:56:58 +0100, Michael Mercier wrote:
I just tried you patch and I got an error when I try to import the
smbus python package:
import smbus
ImportError:
/usr/local/lib/python3.2/dist-packages/smbus.cpython-32mu.so:
undefined
symbol: i2c_smbus_process_call
Any idea?
Hmm, OK, I think I see what's going on here.
There are two i2c-tools branches: the stable branch (3.1) and the
development branch (SVN trunk.) The patch I sent was for the
development branch.
One important difference between the two branches is that, in the
stable branch, the i2c API is implemented as a set of inline
functions,
while in the development branch it is a library. I don't think that
py-smbus was properly ported so most likely it was already broken
before my patch. I suppose you are using SVN trunk and this is why you
have this linking problem?
If that is the case, then maybe the following patch will do the trick:
---
py-smbus/Module.mk | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- i2c-tools.orig/py-smbus/Module.mk 2012-04-26 12:05:55.351086796
+0200
+++ i2c-tools/py-smbus/Module.mk 2015-01-22 11:47:06.524806243 +0100
@@ -12,7 +12,7 @@ PY_SMBUS_DIR := py-smbus
PYTHON ?= python
DISTUTILS := \
cd $(PY_SMBUS_DIR) && \
- CPPFLAGS="$(CPPFLAGS) -I../include" $(PYTHON) setup.py
+ CPPFLAGS="$(CPPFLAGS) -I../include" LDFLAGS="$(LDFLAGS) -Llib
-li2c" $(PYTHON) setup.py
all-python: $(INCLUDE_DIR)/i2c/smbus.h
$(DISTUTILS) build
But please keep in mind that my python knowledge is non-existent so it
might be plain wrong. Hopefully Angelo can comment on this.
--
Jean Delvare
SUSE L3 Support
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