Hello,
I'm not sure if this the correct list but here goes (and sorry for the
noise). I've been attempting to wrap python around libhdfs.
So far so good (i've attached the SWIG template at the end). The
compilation works without errors and the shared objects do have
references to all the functions.
However, when importing into python
import pyhdfs
i get the following error:
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "/home/sguha/tmp/b/hdfs.py", line 7, in ?
import _hdfs
ImportError: libjvm.so: cannot open shared object file: No such file
or directory
However, libjvm.so is located in /home/sguha/mine/jdk1.6.0_02/jre/lib/
amd64/server which is present in the PYTHONPATH and sys.path.
I can understand it complaining <i>while</iloading the libjvm.so
but python doesn't locate it even when in the path.
As an aside, the build command for hdfs.c has " -ljvm " - this
should affect SWIG, right? Meaning if my program (e.g) links to a
library and i want a wrapper around my program (to python) i need SWIG
templates for my headers only and not for the linked library...right ?
( I guess the answer is i dont otherwise that would be quite a
nightmare of work)
Thank you for your time
Saptarshi
Attachments:
SWIG template
%module pyhdfs
%{
#include "hdfs.h"
%}
%include "hdfs.h" 3 2897
On Sep 20, 7:00 pm, sapsi <saptarshi.g... @gmail.comwrote :
Hello,
I'm not sure if this the correct list but here goes (and sorry for the
noise). I've been attempting to wrap python around libhdfs.
So far so good (
I should point out that libhdfs is a c library to Hadoop Distributed
FileSystem.
Thank you
Saptarshi
On Sep 20, 8:22 pm, sapsi <saptarshi.g... @gmail.comwrote :
On Sep 20, 7:00 pm, sapsi <saptarshi.g... @gmail.comwrote :
Hello,
I'm not sure if this the correct list but here goes (and sorry for the
noise). I've been attempting to wrap python around libhdfs.
So far so good (
I should point out that libhdfs is a c library to Hadoop Distributed
FileSystem.
Thank you
Saptarshi
Hmm,here goes, you need -Wl,--rpart -Wl,path-to-jvm in the LDFLAGS in
the compile process.
HTH
Saptarshi
On Sep 21, 9:00 am, sapsi <saptarshi.g... @gmail.comwrote :
Hello,
I'm not sure if this the correct list but here goes (and sorry for the
noise). I've been attempting to wrap python around libhdfs.
So far so good (i've attached the SWIG template at the end). The
compilation works without errors and the shared objects do have
references to all the functions.
However, when importing into python
import pyhdfs
i get the following error:
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "/home/sguha/tmp/b/hdfs.py", line 7, in ?
import _hdfs
ImportError: libjvm.so: cannot open shared object file: No such file
or directory
However, libjvm.so is located in /home/sguha/mine/jdk1.6.0_02/jre/lib/
amd64/server which is present in the PYTHONPATH and sys.path.
I can understand it complaining <i>while</iloading the libjvm.so
but python doesn't locate it even when in the path.
As an aside, the build command for hdfs.c has " -ljvm " - this
should affect SWIG, right? Meaning if my program (e.g) links to a
library and i want a wrapper around my program (to python) i need SWIG
templates for my headers only and not for the linked library...right ?
( I guess the answer is i dont otherwise that would be quite a
nightmare of work)
Thank you for your time
Saptarshi
Attachments:
SWIG template
%module pyhdfs
%{
#include "hdfs.h"
%}
%include "hdfs.h"
Your libjvm.so isn't being found because it isn't in a standard system
library directory. You have a few choices to solve this:
1. Install libjvm.so into /lib or /usr/lib. You may be able to get
away with putting it in /usr/local/lib if your OS is setup to look
there.
2. If a Linux/Solaris box, do:
LD_LIBRARY_PATH =/home/sguha/mine/jdk1.6.0_02/jre/lib/amd64/server
export LD_LIBRARY_PATH
then run your application. This will tell you application to look in
that directory for the shared library at run time.
3. If on Linux/Solaris, compile that library directory into the Python
module .so by setting before you compile your Python module:
LD_RUN_PATH=/home/sguha/mine/jdk1.6.0_02/jre/lib/amd64/server
export LD_RUN_PATH
This only needs to be done at compile time, but means your module will
always expect it to be in that location.
Graham This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: Gary |
last post by:
Hi-
I've been searching the web for a while and I've been unable to find a
way to access c data objects in python without using SWIG. I can do
methods just fine but I can't access variables. It seems like
PyModule_AddObject should work but it segfaults my program. There's a
good chance I'm just using it wrong, or I should be using something
else. Could someone give me a simple, complete example pretty please?
Thanks!
|
by: Jon Moldover |
last post by:
Hi, I'm using Python in my win32 app by linking to the python23.dll.
I'm trying to expose some c++ code in my app to Python so I can make
application calls from Python scripts (according to the Python windows
FAQ I shouldn't have to make a seperate dll, see link below). I
create a MyModule.i file for swig which contains a simple test c++
class. I run swig on it with the following options: swig -python -c++
-includeall -shadow MyModule.i,...
|
by: Bo Peng |
last post by:
Dear Python group:
I am planning on an application that involves several complicated C++
classes. Basically, there will be one or two big data objects and some
"action" objects that can act on the data. I would like to use a script
language to control the interaction between these c++ objects.
I become interested in Python since it can load C++ objects and can even
extend C++ classes. However, I am not quite sure to what extent can...
|
by: Roy Smith |
last post by:
I've got a C library with about 50 calls in it that I want to wrap in
Python. I know I could use some tool like SWIG, but that will give me a
too-literal translation; I want to make some modifications along the way
to make the interface more Pythonic.
For example, all of these functions return an error code (typically just
errno passed along, but not always). They all accept as one of their
arguments a pointer to someplace to store...
|
by: Arthur Chereau |
last post by:
Hi,
I'm trying to setup viewcvs to work with subversion 1.2.0 on Linux with
Python 2.4.1. The last viewcvs (from CVS) needs subversion python
bindings. I installed swig and built subversion from source with it.
Everything works fine until I try to build the Python bindings.
When I try "make swig-py" I get the following, Python related, error:
# make swig-py
| |
by: Claudio Grondi |
last post by:
What is the current status of Python OpenCV interface i.e. the opencv
module?
\OpenCV\samples\python\contours.py gives following ERROR:
OpenCV Python version of contours
Traceback (most recent call last):
File "\OpenCV\samples\python\contours.py", line 6, in ?
from opencv import cv
ImportError: No module named opencv
|
by: Java and Swing |
last post by:
I am trying to wrap some C code I have. Currently I have something
like...
defs.h
-----------
typedef unsigned long MY_DIGIT;
myapp.c
-------------
void MakeDigits(MY_DIGIT digits) {
|
by: ajikoe |
last post by:
Hi,
I tried to follow the example in swig homepage.
I found error which I don't understand.
I use bcc32, I already include directory where my python.h exist in
bcc32.cfg.
/* File : example.c */
#include <time.h>
|
by: matey |
last post by:
I am have version 2.3.4. I want to write a python script to access a
secure HTTPS.
I tried the following:
import urllib
urllib.urlopen("https://somesecuresite.com")
s = f.read()
f.close()
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
| |
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| |
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| | |