Thư viện xử lý cơ chế signal-slot

 export PATH=$PATH:/opt/FriendlyARM/toolschain/4.4.3/bin   
 export CROSS=arm-none-linux-gnueabi-   
 export HOST=arm-none-linux-gnueabi   
   
   
 export PREFIX=/friendlyarm  
 ./configure --prefix=${PREFIX} --host=${HOST} CC=${CROSS}gcc   
   
 make   
 make install