linuxpluginwrapper ERROR

[Osmany Guirola Cruz]

 I am installin the linux plugin wrapper and it give me these error 

>>The linuxthreads port needs source code for libgcc
>>Please install FreeBSD source code in /usr/src
*** Error code 1

 in my /usr/src i have the sys folder .. some weeks ago i compiled the kernel ..... i don't understand these error i think that i have the source code installed.... if these is not the way please HEKP ME