Kai Ruottu <kai.ruottu@xxxxxxxxxxx> writes: > For a layman like me some things sound predestined like that Posix threads > being an additional feature in an Posix-compatible opsys meanwhile the > standard C library like newlib implements the base Posix C functions. The > real priests will know more about these things. So... > > What is the "operating system" on the target? Does it support Posix > threads? > > At least Cygwin on Win32 uses newlib as the base C library and should > support > Posix threads. Also the RTEMS RTOS should use newlib and support Posix > threads : > > http://www.rtems.com/wiki/index.php/RTEMSFeatures > > So I would be really surprised if newlib should nowadays implement some > "operating system" too... newlib used not only on cygwin and RTEMS, but also on pure embedded systems with no operating system. In that case newlib relies on libgloss to provide some basic functionality. In that scenario, it makes sense to ask whether the newlib/libgloss combination provides POSIX threads for a specific target. In general, as far as I know, the answer is "no." POSIX threads are fairly difficult to implement correctly. Ian
