Hello There While trying to compile my c++ application with new gcc/g++ I am hitting the below error . Where as I see the timeval is defined in time.h and I have included time.h /vob/ngn_src/include/CpsCmnTime.h:457: error: invalid use of incomplete type 'const struct timeval' /vob/ngn_src/include/CpsCmnTime.h:160: error: forward declaration of 'const struct timeval' My declaration is as below . inline static bool setTime (struct timespec& pTimespec, struct timeval const &pTimeVal); inline bool CpsCmnTime::setTime (struct timespec& pTimespec, struct timeval const &pTimeVal) { pTimespec.tv_sec = pTimeVal.tv_sec + (pTimeVal.tv_usec / 10000000); (pTimeVal.tv_usec % 1000000) ? pTimespec.tv_nsec = (pTimeVal.tv_usec % 1000000) * 1000 : pTimespec.tv_nsec = 0; return true; } Thanks Gaurav