timer.h missing from Posix GCC Simulator 6.0.4

I’ve just downloaded PosixGCCSimulator_6.0.4.zip, but when I try to build my project I find that timer.h is missing. And including timer.h from the FreeRTOS/include doesn’t help as it renders lots of other error messages. What is the procedure to get timer-definitions when running Posix simulator?

timer.h missing from Posix GCC Simulator 6.0.4

It sounds like you have a very old version. There are some updated versions on the web, including in the FreeRTOS Interactive site: https://interactive.freertos.org/hc/en-us/community/topics/200480326-Windows-or-Linux-based-ports-and-simulators