Hello, Greetings ! I am Divya. Basically from systems side, acquainted with Windows OS and with very limited knowledge about compilers. My objective: I have got some updated files of GCC (3.0) from my colleague. I am asked to create a new binary including these updated files. Current situation: I have installed latest Cygwin in my system and trying to compile simple programs as first step. Help needed: 1)Is it possible to build the source of GCC in cygwin targeting Windows. If Yes, could you please provide document or steps to do so. 2)While compiling simple C files, I get an error stdio.h:No such file or directory (The stdio.h is available in the folder structure) - Could you please provide some solution as the FAQ didn't help me much. Thanks in advance, Divya