Hi, I think ecos/packages/kernel/current/include/mqueue.inl has a small error: inline long Cyg_Mqueue::count() { ... } should be like: CYGPRI_KERNEL_SYNCH_MQUEUE_INLINE long Cyg_Mqueue::count() { ... } The current way gives me compilation errors for the kernel tests (mqueue1.cxx). Or maybe I'm missing something. - Gustav