Hello Apparently "GNU GCC for ARM" possede features, similar to STL (standard template library) ... like array, vector, algorithms, etc. I'm aware if someone suceeded to use these features. I tried ... but problems occur when I merely include headers. For example, the following instruction: #include <vector> provokes the error ..... fatal error: vector: No such file or directory Hoever the file vector does exists in the root directory of GCC. Thanks in advance Pavel