-llibrary
       -l library
           Search the library named library when linking.  (The second alter-
           native with the library as a separate argument is only for POSIX
           compliance and is not recommended.)
           It makes a difference where in the command you write this option;
           the linker searches and processes libraries and object files in the
           order they are specified.  Thus, foo.o -lz bar.o searches library z
           after file foo.o but before bar.o.  If bar.o refers to functions in
           z, those functions may not be loaded.
           The linker searches a standard list of directories for the library,
           which is actually a file named liblibrary.a.  The linker then uses
           this file as if it had been specified precisely by name.
           The directories searched include several standard system directo-
           ries plus any that you specify with -L.
           Normally the files found this way are library files---archive files
           whose members are object files.  The linker handles an archive file
           by scanning through it for members which define symbols that have
           so far been referenced but not defined.  But if the file that is
           found is an ordinary object file, it is linked in the usual fash-
           ion.  The only difference between using an -l option and specifying
           a file name is that -l surrounds library with lib and .a and
           searches several directories.
			
		
 
	
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