Thank you. This is my command line:

g++  -o"MyProgram"  ./main.o   -l:libboost_thread.a

 

The result is huge number of messages like:

undefined reference to `pthread_key_create'

 

The same result as I got with this:

g++ -static -o"MyProgram"  ./main.o   -lboost_thread

Some problems with static library libboost_thread.a?