Loading shared libraries

Loading shared libraries

sometimes we run a program in linux environments,we get error like this:

error while loading shared libraries:xxx.so:cannot open shared object file:no such file or direcotry

when you get some error like this,that’s because linux don’t know where to find the xxx.so file.let’s say we already install the xxx.so in /user/local/lib.what we need to do is modifying a system file:

/etc/ld.so.conf

all we need to do is appending a line:

/usr/local/lib

if you got a error like:

undefined reference to”xxxxxxxxxx”

so,there is nothing wrong with you code,the compiler period is right.but the “xx.o” cannot find the library,you should append the missing library,like this:

g++ -lxxxx