Re: [Lapackpp-devel] question of including lapack++ in my makefile

[Abraham Chang-T. L. <cha...@cm...>]

Dear Dominik,

Sorry for taking you so much time.
My makefile now is

# main.o : main.cpp
	g++ -c -I/home/changtsl/lapackpp_lib/include/lapackpp main.cpp
# main.exe : main.o
	g++ -L/home/changtsl/lapackpp_lib/lib -llapackpp main.o -o main.exe

date
LD_LIBRARY_PATH=/home/changtsl/lapackpp_lib/lib ./main.exe
echo finished
/bin/echo -e "\a"
date

But the error is still the same:

[changtsl@cee-changtsl EIG]$ ./makefile
Wed Nov 16 15:35:56 EST 2011
./main.exe: error while loading shared libraries: liblapackpp.so.14:
cannot open shared object file: No such file or directory
finished

Thank you for your help and patience.

Sincerely,
changtsan


On Wed, November 16, 2011 15:28, Dee wrote:
Dear changtsan,

okay, next try:

LD_LIBRARY_PATH=/home/changtsl/lapackpp_lib/lib ./make.exe

With regards
Dominik

-------- Original-Nachricht --------
Betreff: Re: [Lapackpp-devel] question of including lapack++ in my makefile
Von: Abraham Chang-Tsan Lu <cha...@cm...>
An: lap...@li...
Datum: 16.11.2011 20:29

> Dear Dominik,
>
>
> I really appreciate your help. I follow what you indicated, it shows
>
>
> [changtsl@cee-changtsl EIG]$ ./makefile
> g++: unrecognized option '-R/home/changtsl/lapackpp_lib/lib'
> Wed Nov 16 13:24:07 EST 2011
> ./main.exe: error while loading shared libraries: liblapackpp.so.14:
> cannot open shared object file: No such file or directory finished
>
> and
>
> [changtsl@cee-changtsl EIG]$ ./makefile
> g++: unrecognized option '-R.'
> Wed Nov 16 13:14:45 EST 2011
> ./main.exe: error while loading shared libraries: liblapackpp.so.14:
> cannot open shared object file: No such file or directory finished
>
> It seems that my machine doesn't recognize the command -R. The OS on my
> machine is RedHat linux. Thank you.
>
> Sincerely,
> changtsan
>
>
>
> On Wed, November 16, 2011 12:50, Dee wrote:
> Dear changtsan,
>
>
> the path in the makefile (behind the -L) is not important for the
> execution of the program.
>
> But because of the "exe" I thought you are using Windows. But as I see
> now you use Linux or something like it. So you need to tell the application
> where the library is located because Linux does not search in the current
> directory as default (and you shouldn't change it for security reasons).
>
> There are some ways to solve this problem. See
> http://www.eyrie.org/~eagle/notes/rpath.html for example in using the
> "-R" option when linking the binary (the line with the -L in it):
>
>
> g++ -R/home/changtsl/lapackpp_lib/lib -L/home/changtsl/lapackpp_lib/lib
> -llapackpp main.o -o main.exe
>
>
> But pay attention, that the main.exe will only work on your system (or
> at least on any system that has the library in this path or in the global
> path defined by LD_LIBRARY_PATH).
>
> So you could also link the main.exe via
>
>
> g++ -R. -L/home/changtsl/lapackpp_lib/lib -llapackpp main.o -o main.exe
>
> so the library will first be searched in the local directory. (You need to
> copy the so-files in the same directory as the main.exe of course.)
>
> With regards
> Dominik
>
>
>
> -------- Original-Nachricht --------
> Betreff: Re: [Lapackpp-devel] question of including lapack++ in my
> makefile Von: Abraham Chang-Tsan Lu <cha...@cm...>
> An: lap...@li...
> Datum: 16.11.2011 18:34
>
>
>> Dear Dominik,
>>
>>
>>
>> I copy the whole file folder "lapackpp_lib" to the directory where
>> main.exe is, but the same error message is shown. Do I have to change
>> the path of lapackpp_lib in the makefile? Thank you.
>>
>>
>> Sincerely,
>> changtsan
>>
>>
>>
>> On Wed, November 16, 2011 11:28, Dee wrote:
>> Dear changtsan,
>>
>>
>>
>> You link lapackpp-Library dynamically to your main.exe. This means
>> everybody who wants to start main.exe needs to have the lapackpp-Lib
>> somewhere in his execution path.
>>
>> The easiest way tol solve this is to copy the library in the same
>> directory as the exe. Then the programm should execute fine.
>>
>> With regards
>> Dominik
>>
>>
>>
>>
>> -------- Original-Nachricht --------
>> Betreff: Re: [Lapackpp-devel] question of including lapack++ in my
>> makefile Von: Abraham Chang-Tsan Lu <cha...@cm...> An:
>> lap...@li... Datum: 16.11.2011 17:25
>>
>>
>>
>>> Hi Dominik,
>>>
>>>
>>>
>>>
>>> Thank you very much. I try to follow your indication, so now the
>>> content of my makefile now is
>>>
>>> g++ -c -I/home/changtsl/lapackpp_lib/include/lapackpp main.cpp g++
>>> -L/home/changtsl/lapackpp_lib/lib -llapackpp main.o -o main.exe
>>>
>>>
>>>
>>>
>>> I think the file "main.o" and "main.exe" are produced successfully.
>>> But
>>> when I execut "main.exe", the error message shows
>>>
>>> [changtsl@cee-changtsl EIG]$ ./main.exe
>>> ./main.exe: error while loading shared libraries: liblapackpp.so.14:
>>> cannot open shared object file: No such file or directory
>>>
>>> What should I do then? Thank you very much.
>>>
>>>
>>>
>>>
>>> Sincerely,
>>> changtsan
>>>
>>>
>>>
>>> On Tue, November 15, 2011 16:04, Dee wrote:
>>> Dear changtsan,
>>>
>>>
>>>
>>>
>>> first: Please do not write directly to the responder but to the
>>> mailing list so that everyone can read your further questions.
>>> (Usually you
>>> set the responder as CC, if you wish to.)
>>>
>>> Concerning your question: It's better to link the library when
>>> building the exe:
>>>
>>> g++ -L/home/changtsl/lapackpp_lib/lib -llapackpp main.o -o main.exe
>>>
>>> So you should delete the second g++-line in your makefile and change
>>> the third to the one above.
>>>
>>> With regards
>>> Dominik
>>>
>>>
>>>
>>>
>>> -------- Original-Nachricht --------
>>> Betreff: Re: [Lapackpp-devel] question of including lapack++ in my
>>> makefile Von: Abraham Chang-Tsan Lu <cha...@cm...> An: Dee
>>> <de...@de...>
>>> Datum: 14.11.2011 16:24
>>>
>>>
>>>
>>>
>>>> Hi Dominik,
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Thank you for your reply, and I am sorry to bother you again. I
>>>> don't know much about makefile, so the questions I am going to ask
>>>> below may be stupid.
>>>>
>>>> From the website you indicated, I see one line saying
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> gcc -L/usr/local/lib -llapackpp foo.o
>>>>
>>>> Does the "lib" here refers to the "lib" under /lapackpp_lib?
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> I have attached the updated makefile and error.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Thank you very much.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Sincerely,
>>>> changtsan
>>>>
>>>>
>>>>
>>>> On Sat, November 12, 2011 02:18, Dee wrote:
>>>> Hello,
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> you forgot to link the Lapack-library in your Makefile. Please see
>>>> chapter "Library Usage" on http://lapackpp.sourceforge.net/
>>>>
>>>>
>>>>
>>>> With regards
>>>> Dominik
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> -------- Original-Nachricht --------
>>>> Betreff: [Lapackpp-devel] question of including lapack++ in my
>>>> makefile Von: Abraham Chang-Tsan Lu <cha...@cm...> An:
>>>> lap...@li... Datum: 12.11.2011 00:18
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> Dear Lapack++ Developer,
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> I have some trouble in including lapack++ in my makefile.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On my machine, Lapack++ is under the directory of
>>>>> /home/changtsl/lapackpp-2.5.4
>>>>> and /home/changtsl/lapackpp_lib.
>>>>>
>>>>>
>>>>> I have attached my code, makefile, and the error message given in
>>>>>  the terminal. The code is very short and only for testing. Would
>>>>> you please help me to solve the problem? Thank you very much.
>>>>>
>>>>> Sincerely,
>>>>> changtsan
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> -----------------------------------------------------------------
>>>>> --
>>>>> --
>>>>> --
>>>>> --
>>>>> -----
>>>>> RSA(R) Conference 2012
>>>>> Save $700 by Nov 18
>>>>> Register now
>>>>> http://p.sf.net/sfu/rsa-sfdev2dev1
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> lapackpp-devel mailing list lap...@li...
>>>>> https://lists.sourceforge.net/lists/listinfo/lapackpp-devel
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
>
>




-- 
Abraham Chang-Tsan Lu
Civil and Environmental Engineering
Carnegie Mellon University
Pittsburgh, PA, 15213