Win7 64-bit gcc 4.8.2 (cygwin) Ref: http://stackoverflow.com/questions/14172884/no-fileno-function-in-nuwen-net- mingw-distro The 'fileno' function is not visible when -std=c++11 is used but is visible when it is not. The reference indicates that this is a POSIX compliant function which Mingw chooses to not implement because POSIX isn't Windows. What is the position of the gcc group? Does 4.8.3 have fileno visible? History: I have tried the flex C++ output but failed to achieve a successful compile, and like the coward I am, when I discovered that the C output compiled successfully I didn't pursue the issue further. But now I have a need for using hexfloat in my input, works fine in output, in order to do round-trip ASCII processing. Hexfloat is available in C++11 but unavailable otherwise leading me to try to compile the flex output in C++11. Any help would be most appreciated.
