undefined reference to 'readline'

I'm t开发者_运维知识库rying to use the readline library in my c++ project using netbeans, so I've installed libreadline6-dev and add it to my project Properties -> Linker -> Additional Library directories -> and add (usr/include/readline).

But while compiling I get this error : undefined reference to 'readline'.

I found that I need to add also -lreadline to somewhere, but I have no idea where to put it.

Any ideas.

Thanks

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You are on the good way, the problem you got is about the linker.

You have to specify the library(readline) here:

Project properties -> Build -> Linker -> Libraries.

and you also need to specify the path of the library:

Properties -> Linker -> Additional Library directories

But, like nos said, it is not the include directory.The include directory is the headers of the library(.h).

The linker needs a file with the extension .a on UNIX, it should be under a lib directory (ex: /usr/lib depends on where the library is installed).

If it is not working be sure that the file [library_directory]/libreadline.a exists

You also need to link ncurses with your project because readline uses it.