First of all, I notice this message in your log: Warning: File 'test/.deps/strsep.Po' has modification time 16863 s in the future So there is a time issue messing up `make`. Nomally, the particular file `src/util/cvar/mpir_cvars.c` shouldn’t need to be re-made. Secondly, it is weird that the message complains it couldn’t find `src/mpi` directory. Is this something due your particular way of build. For example, I notice you are building out of a temporary folder? -- Hui Zhou From: satyamr via discuss <[email protected]> Date: Friday, January 22, 2021 at 1:49 PM To: Discuss <[email protected]> Cc: satyamr <[email protected]> Subject: [mpich-discuss] Make Error Installing mpich3.3 from https://www.mpich.org/static/downloads/3.3/ Following the respective installation guide Configure completed without any problem but make is giving error PFA m.txt and c.txt files.