Re: [Help-gsl] unable to link and run a simple program

[Mohammad Akhlaghi]

Hi Vasu,

This is a dynamic linker problem. Linking with shared libraries is done 
every time you run a program. The compiler has indeed found the 
libraries and that is why your `a.out' has been created.


The dynamic linker looks into the `LD_LIBRARY_PATH' shell variable to 
find the libraries. So you have to put `/myinst/lib/' in this variable.


You can do this with a command like below. You can also put it in your 
`~/.bashrc' to be available at startup of your interactive bash sessions.


export LD_LIBRARY_PATH="/myinst/lib/:$LD_LIBRARY_PATH"

For more on custom installation paths, you can see the explanations in 
the link below.


https://www.gnu.org/software/gnuastro/manual/html_node/Installation-directory.html

Cheers,
Mohammad

Re: [Help-gsl] unable to link and run a simple program

[Vasu Jaganath]

tried directly linking with /myinst/libgslcbals.so.0.0.0 and
libgsl.so.23.0.0

and tried directly linking with libgsl.so.0 and libglscblas.so.23.0 (the
symbolic links)

like this

gcc gsl_test.o /myinst/lib/libgslcblas.so.0 /myinst/lib/libgsl.so.23


/myinst is not a folder in /, my install directory in several directories
deep into my /home/myname/

there are no permissions issues, my system is ubuntu 16.04

On Mon, Apr 9, 2018 at 9:00 PM, Vasu Jaganath 
wrote:

> there are  symbolic links
>
>  libgsl.so.23 and libgslcblas.so.0 which point to the correct libraries
> but
> i still get the same error
>
> On Mon, Apr 9, 2018 at 8:46 PM, Vasu Jaganath 
> wrote:
>
>> Hi,
>>
>> I have installed gsl-2.4 in a custom directory.
>>
>> using this blogpost
>>
>> https://coral.ise.lehigh.edu/jild13/2016/07/11/hello/
>>
>> when I try to run my a.out
>>
>> I get the following message
>>
>> ./a.out: error while loading shared libraries: libgsl.so.23: cannot open
>> shared object file: No such file or directory
>>
>>
>> I have checked in my /myinst/lib/ directory there
>>
>> exists a libgsl.so.23.0.0 file
>>
>> I have double-checked my linking path and include path yet this error
>> persists.
>>
>> I am able to run the binaries from /myinst/bin/ directory
>>
>> Thanks,
>> Vasu
>>
>
>

[Help-gsl] unable to link and run a simple program

[Vasu Jaganath]

Hi,

I have installed gsl-2.4 in a custom directory.

using this blogpost

https://coral.ise.lehigh.edu/jild13/2016/07/11/hello/

when I try to run my a.out

I get the following message

./a.out: error while loading shared libraries: libgsl.so.23: cannot open
shared object file: No such file or directory


I have checked in my /myinst/lib/ directory there

exists a libgsl.so.23.0.0 file

I have double-checked my linking path and include path yet this error
persists.

I am able to run the binaries from /myinst/bin/ directory

Thanks,
Vasu