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December 2009

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272 discussions

How to get rid of compiler version in library names?
by dutchman1 30 Nov '09

30 Nov '09

Hi, I just installed Boost and noticed the library names all have the compiler/boost version in the file name, e.g. gcc41. libboost_date_time-gcc41-mt-1_39.a The program I'm trying to compiler only looks for the library name, e.g. libboost_date_time-mt.a. My error: error: Unable to find file or target named error: '/usr/lib/libboost_date_time-mt.a' error: referred from project at error: '.' How can I make boost install using the library names without compiler name/boost version? Thanks! -- View this message in context: http://old.nabble.com/How-to-get-rid-of-compiler-version-in-library-names--… Sent from the Boost - Users mailing list archive at Nabble.com.

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Re: [Boost-users] Numpy ndarray as argument or return value using boost python
by OvermindDL1 30 Nov '09

30 Nov '09

On Mon, Nov 30, 2009 at 1:34 PM, Nyiro Gergo <gergo.nyiro(a)gmail.com> wrote: > - Hide quoted text - > - Show quoted text - > <http://groups.google.com/group/boost-list/browse_thread/thread/b491f5eb8cc8…> > > On Mon, Oct 12, 2009 at 7:09 AM, Pim Schellart <p.schell... > <http://groups.google.com/groups/unlock?_done=/group/boost-list/browse_threa…>@gmail.com> > wrote: >>> Hi Everyone, > >>> I tried to find a good example for this but after spending two days on >>> google and one day getting pyublas to compile I decided to call for >>> help. >>> I want to give a numpy ndarray as an argument to a c++ method, >>> calculate something and return the output as an ndarray to Python. >>> I would prefer not to use another library (such as PyUblas) for this >>> so I do not have to add another dependency to my program. >>> Since the latest information on boost python is quite outdated (uses >>> numeric) I would like to know the following. > >>> 1. Is boost python still maintained or should I switch to another tool. >>> 2. Is numpy supported, and if so, >>> 3. can someone give me a basic example of how to use it. > >> 1. Yes, Boost.Python is still maintained and works find. >> 2. Yes, Boost.Python supports any and all libraries that communicate >> through python, you would just use the ndarray just like any other >> Python Object. >> 3. Give an example of how you use it in Python and we can give you an >> example of how you would do it from the C++ side, it is a pretty >> direct 1-to-1 mapping (have you gone through the Boost.Python >> tutorials and documentation yet?). > > Hello, > > I read that post above on Boost-users mailing list, but I have no permission > required to post. To answer to the 3. point could you give me an example how > to solve this python code snippet in C++: >>>> parser = cParser('FileName') # that would be the C++ class (already >>>> implemented) >>>> TimeAndSignal = parser.getSignal('SignalName') # and this the >>>> questionable member function >>>> type(TimeAndSignal) > <type, 'list'> >>>> len(TimeAndSignal) > 2 >>>> type(TimeAndSignal[0]) > <type, 'ndarray'> >>>> type(TimeAndSignal[1]) > <type, 'ndarray'> >>>> import pylab >>>> pylab.plot(TimeAndSignal[0], TimeAndSignal[1]); pylab.show() >>>> Time, Signal = parser.getSignal('SignalName') # and this must work too >>>> pylab.plot(Time, Signal); pylab.show() > > Thanks for your help in advance. You should forward this to the Boost list. I am not home right now so cannot give a good example, so you would probably get a much better example from there. I am forwarding this response back to the Boost list. If I notice this later when I have free time, I will come up with examples for the above, but it really is very simple, should look at the examples included with Boost.Python.

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