Yuriy Rusinov wrote:
> I have to put some C-language functions onto postgresql server 9.2. These 
> functions are used GSL
> software library http://www.gnu.org/software/gsl/. In Makefile for these 
> functions I wrote LD_FLAGS =
> ... -lgsl, On some source-based Linux distributions such as gentoo linux 
> these functions successfully
> installed onto server, but on rpm-based distributions such as fedora and 
> others does not. gsl library
> has to be compiled from sources, because some specific distributions does not 
> have this one and rpm-
> installation of this library does not allowed. Error message is "error 
> <mylibrary>.so cannot load
> libgsl.so.0 no such file" despite of gsl library was installed onto 
> /usr/local, library files are
> installed into /usr/local/lib. Where is the problem in postgresql or 
> distribution ?

Read "man ld", the description of "search paths to locate
required shared libraries".

/usr/local/lib is not automatically searched.
I would either install the library in /usr/lib,
link the shared object with -Wl,-rpath,/usr/local/lib
or put /usr/local/lib into /etc/ld.so.conf and run
ldconfig.

Yours,
Laurenz Albe


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