I would like to have timestamps on emerge's ouput to get a quick glance how long emerging a package takes. Without quiet-build=y one would hardly see them between all the build output but with quiet-build=y it should be quite useful. Of course I know that I can find this information in form of unix timestamps in emerge.log and someone on IRC mentioned I could set PORT_LOGDIR and check, when the files have been created/modified but I would like to have this directly in my terminal. The perfect solution (as I see it) would be a variable to be defined in make.conf that specifies the format of the timestamps as used with C's strftime() (or a python equivalent). Reproducible: Always
For the make.conf format setting, we could use something like EMERGE_DEFAULT_OPTS="--build-time-fmt=%H:%M:%S" in order to avoid introducing more variables. Also, see bug 394335 which is about display of build ETA.
Your solution to use --build-time-fmt=%H:%M:%S in EMERGE_DEFAULT_OPTS is perfectly fine with me and thanks for the reference to the other bug. I would totally agree to make this one a dup or blocker of the mentioned #394335
