On 14 June 2013 10:31, Ignas wrote: > Hello, > I've tried to build GCC 4.8.1 numerous times without any luck. > Build, host, and target system: i686-pc-mingw32. > I'm using MinGW Shell, gcc -v 4.6.2 ; g++ -v 4.7.2 It looks as though you don't have basic files like <stdio.h> and <assert.h> installed where GCC can find them. I don't know how to install them for mingw, but would guess they should be provided by the mingw-runtime or win32api packages.