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Old 06-14-2010, 12:08 PM   #1
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Registered: Jun 2010
Location: Severna Park, MD
Distribution: Red Hat Enterprise Linux v.4
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Post At run time get: "Error while loading shared libraries:"

I am trying to implement the GDAL I/O libraries as a LINUX Newbie.

When I run the test executable after my compile and link I get the error:

[firani@tautog gdal-1.7.1]$ ./test
./test: error while loading shared libraries: cannot open shared object file: No such file or directory

I do not know how to trace this problem further, but I am still digging.

I first managed to build gdal and my admin person installed it for me. I am trying to compile and link the code below using the following command as a test case (I am not running as su):

g++ -L/home/firani/USGS/gdal/gdal-1.7.1/.libs -lgdal -o./test test.cpp

#include "gdal_priv.h"

int main()
GDALDataset *poDataset;
poDataset = (GDALDataset *) GDALOpen( "urbgd001.dat", GA_ReadOnly );
if( poDataset == NULL )
printf("poDataset is null/n.");

My link libraries exist locally in my own directories as well as in the /usr/local/lib directories:

[firani@tautog gdal-1.7.1]$ locate libgdal

under /usr/local/lib my libraries look like this:

[firani@tautog lib]$ ls -log *gdal*
-rw-r--r-- 1 78499986 May 21 11:53 libgdal.a
-rwxr-xr-x 1 1134 May 21 11:53
lrwxrwxrwx 1 17 May 21 11:53 ->
lrwxrwxrwx 1 17 May 21 11:53 ->
-rwxr-xr-x 1 34245042 May 21 11:53

under my local directory my .libs libraries look like this:
[firani@tautog gdal-1.7.1]$ cd .libs
[firani@tautog .libs]$ ls -log *gdal*
-rw-r--r-- 1 78499986 May 21 11:49 libgdal.a
lrwxrwxrwx 1 13 May 21 11:49 -> ../
-rw-r--r-- 1 1134 May 21 11:49 libgdal.lai
lrwxrwxrwx 1 17 May 21 11:48 ->
lrwxrwxrwx 1 17 May 21 11:48 ->
-rwxr-xr-x 1 34245042 May 21 11:48

I have played around tih my $Path and $PATH environmenal values trying to point to these locations but have had no luck running after recompiling with any combination

Currently my $PATH looks like:

[firani@tautog .libs]$ echo $PATH

and my my $Path looks like:

[firani@tautog .libs]$ echo $Path

Last edited by firani; 06-14-2010 at 12:10 PM.
Old 06-14-2010, 01:05 PM   #2
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Registered: Jun 2004
Location: Piraeus
Distribution: Slackware
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You don't need PATH but LD_LIBRARY_PATH. For the bash shell you can run:
export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
before doing your tests.

1 members found this post helpful.


error, g++, libraries, time

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