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<== Date ==> | <== Thread ==> |
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Subject: | issue with epics in python |
From: | Cyrille Thomas <[email protected]> |
To: | "[email protected]" <[email protected]> |
Date: | Wed, 27 Sep 2017 09:50:10 +0000 |
Hi, I just installed pyepics on my mac, followed the instruction but got an error message when running a script. Can you help me to find the bug? Here is what I have done: I installed epics base 3.15.4 and make in the folder I run the command NOLIBCA=1 pip install pyepics Then run the script and then got the following error: python DTU_acquisition_script.py Traceback (most recent call last): File "/Users/cyrillethomas/anaconda/lib/python3.6/site-packages/epics/ca.py", line 252, in initialize_libca libca = load_dll(find_libca()) File "/Users/cyrillethomas/anaconda/lib/python3.6/ctypes/__init__.py", line 426, in LoadLibrary return self._dlltype(name) File "/Users/cyrillethomas/anaconda/lib/python3.6/ctypes/__init__.py", line 348, in __init__ self._handle = _dlopen(self._name, mode) OSError: dlopen(/Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib, 6): Symbol not found: _EPICS_CA_ADDR_LIST Referenced from: /Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib Expected in: flat namespace in /Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib Traceback (most recent call last): File "/Users/cyrillethomas/anaconda/lib/python3.6/site-packages/epics/ca.py", line 252, in initialize_libca libca = load_dll(find_libca()) File "/Users/cyrillethomas/anaconda/lib/python3.6/ctypes/__init__.py", line 426, in LoadLibrary return self._dlltype(name) File "/Users/cyrillethomas/anaconda/lib/python3.6/ctypes/__init__.py", line 348, in __init__ self._handle = _dlopen(self._name, mode) OSError: dlopen(/Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib, 6): Symbol not found: _EPICS_CA_ADDR_LIST Referenced from: /Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib Expected in: flat namespace in /Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib During handling of the above exception, another exception occurred: Traceback (most recent call last): File "DTU_acquisition_script.py", line 61, in <module> ampli = PV('amplitude') File "/Users/cyrillethomas/anaconda/lib/python3.6/site-packages/epics/pv.py", line 140, in __init__ if ca.current_context() is None: File "/Users/cyrillethomas/anaconda/lib/python3.6/site-packages/epics/ca.py", line 406, in wrapper initialize_libca() File "/Users/cyrillethomas/anaconda/lib/python3.6/site-packages/epics/ca.py", line 254, in initialize_libca raise ChannelAccessException('loading Epics CA DLL failed: ' + str(exc)) epics.ca.ChannelAccessException: loading Epics CA DLL failed: dlopen(/Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib, 6): Symbol not found: _EPICS_CA_ADDR_LIST Referenced from: /Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib Expected in: flat namespace in /Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib Traceback (most recent call last): File "/Users/cyrillethomas/anaconda/lib/python3.6/site-packages/epics/ca.py", line 252, in initialize_libca libca = load_dll(find_libca()) File "/Users/cyrillethomas/anaconda/lib/python3.6/ctypes/__init__.py", line 426, in LoadLibrary return self._dlltype(name) File "/Users/cyrillethomas/anaconda/lib/python3.6/ctypes/__init__.py", line 348, in __init__ self._handle = _dlopen(self._name, mode) OSError: dlopen(/Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib, 6): Symbol not found: _EPICS_CA_ADDR_LIST Referenced from: /Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib Expected in: flat namespace in /Users/cyrillethomas/epicsbase/base-3.15.4/lib/darwin-x86/libca.dylib Cheers, Cyrille Thomas -- |