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eclipse / mraa

Linux Library for low speed IO Communication in C with bindings for C++, Python, Node.js & Java. Supports generic io platforms, as well as Intel Edison, Intel Joule, Raspberry Pi and many more.
http://mraa.io
MIT License
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Cannot import mraa in python3 (swig4 cmake3.13 RaspberryPI) #961

Open g-vidal opened 5 years ago

g-vidal commented 5 years ago

I have compiled mraa on raspberryPi3 buster with swig4 and cmake version 3.13.4 Compilation is OK and installation goes well but even if the modules exist they cannot be imported :

raspife3-€ :  python3
Python 3.7.3rc1 (default, Mar 13 2019, 11:01:15) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import mraa
>>> led=mraa.GPio(12)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'mraa' has no attribute 'GPio'

If I change CMP0078 to OLD the issue is solved. I have proposed a pull request #960 which might be rough but works.

python3
Python 3.7.3rc1 (default, Mar 13 2019, 11:01:15) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import mraa
>>> led = mraa.Gpio(12)
>>>

Changing to NEW also removes the warnings during cmake stage.

tingleby commented 5 years ago

In your first output, mraa.Gpio has been typed with the wrong case on the 'p', could you please try without #960 but with the correct "casing"? mraa.Gpio not mraa.GPio

I am just curious if the CMP0078 has effected it :)

g-vidal commented 5 years ago

Hum hum hum You are right! It seems to work except the error fpor the cmake. The proposed code just enables then to remove the warnings during the cmake. BUT I still have the same error with upm....I'll check again also. Any idea ?

-- PYTHON2 attempting to build!
CMake Warning (dev) at /usr/share/cmake-3.13/Modules/UseSWIG.cmake:564 (message):
  Policy CMP0078 is not set.  Run "cmake --help-policy CMP0078" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.
Call Stack (most recent call first):
  src/python/python2/CMakeLists.txt:9 (swig_add_library)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- PYTHON3 attempting to build!
CMake Warning (dev) at /usr/share/cmake-3.13/Modules/UseSWIG.cmake:564 (message):
  Policy CMP0078 is not set.  Run "cmake --help-policy CMP0078" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.
Call Stack (most recent call first):
  src/python/python3/CMakeLists.txt:9 (swig_add_library)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- INFO - NODE_ROOT_DIR is /usr/local/include/node
-- Found Nodejs: /usr/local/bin/node (found version "11.13.0") 
-- Found v8: /usr/local/include/node/v8.h (found version "7.0.276.38-node.18")
CMake Warning (dev) at /usr/share/cmake-3.13/Modules/UseSWIG.cmake:564 (message):
  Policy CMP0078 is not set.  Run "cmake --help-policy CMP0078" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.
Call Stack (most recent call first):
  src/javascript/CMakeLists.txt:27 (swig_add_library)
This warning is for project developers.  Use -Wno-dev to suppress it.