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libRmath.so: cannot open shared object file: No such file or directory

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# 1  
Old 02-25-2009
libRmath.so: cannot open shared object file: No such file or directory
% locate Rmath
/m/backup/backup/lib/R/include/Rmath.h
/usr/lib/R/include/Rmath.h
% gcc -g -o stand stand.c -I/usr/lib/R/include/ -lRmath -lm
% ./stand
./stand: error while loading shared libraries: libRmath.so: cannot open shared object file: No such file or directory


What's the trouble and how to remove it ?

Regards
# 2  
Old 02-25-2009
The trouble is much like it says -- it can't find libRmath.so. It usually searches in /lib/ and /usr/lib, can you find it on your system?
# 3  
Old 02-26-2009
It is found in /usr/lib/, compiled but can not run

% gcc -g -o stand stand.c -I/usr/lib/ -lRmath -lm
% ./stand
./stand: error while loading shared libraries: libRmath.so: cannot open shared object file: No such file or directory

Is there some trick in '-I/usr/lib/' ?
# 4  
Old 02-26-2009
Check whether your LD_LIBRARY_PATH variable is correctly set.
# 5  
Old 02-28-2009
Is there any solution else? I am advised to avoid LD_LIBRARY_PATH. Can other methods be available?

Thanks
# 6  
Old 02-28-2009
LD_LIBRARY_PATH is a security risk when set to directories that can be easily modified, but I don't see harm in setting it to /usr/lib/. I'm more curious whether LD_LIBRARY_PATH even works; if it still doesn't load, the library may be corrupted or incompatible for some reason. You could also try running /sbin/ldconfig as root in case that library's not cached yet for some reason.
# 7  
Old 02-28-2009
LD_LIBRARY_PATH can work. But it is useful to remind that the library may be corrupted or incompatible
Thanks
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