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/usr/local/lib is not searched by ld-linux.so by default?

 
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# 1  
Old 12-04-2010
/usr/local/lib is not searched by ld-linux.so by default?
it seems that /usr/local/lib is not searched by ld-linux.so by default in fedora14.

If so, why some software put its lib files in /usr/local/lib? eg: glib and gtk+.
# 2  
Old 12-04-2010
Quote:
why some software put its lib files in /usr/local/lib? eg: glib and gtk+.
Sounds like you are building these libraries yourself rather than installing the libraries using yum. Is this correct?
# 3  
Old 12-04-2010
yes, I complied glib and gtk+ myself as root. And I also complied libpcap, but libpcap.so appears both in /usr/lib and /usr/local/lib.

What is the usage of /usr/local/lib if ld-linux.so doesn't search it?
# 4  
Old 12-05-2010
Just as /usr/local/bin is used as the default binary install location when you build a binary, /usr/local/lib is commonly used as the default library install location when you build a library. Been that way for many a year.

You are expected to know what you are doing if you build shared libraries. You could have specified another install location when you were building these libraries but you did not. The result was that the libraries were installed in /usr/local/lib.

Either use LD_LIBRARY_PATH or ldconfig to ensure that libraries in /usr/local/lib are made available, or install them in one of the default locations for shared libraries.
# 5  
Old 12-05-2010
So, /usr/local/lib is just a temp dir for building new binary, right?
# 6  
Old 12-05-2010
No, incorrect. It is a perfectly acceptable place to put libraries. You just have to let consumers of such libraries know that the libraries are there.
# 7  
Old 12-07-2010
But why the ld.linux.so doesn't search /usr/local/lib?
 
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