calculate build elapsed time in SCons

Question

I have a project that consists of a binary and a set of static libraries it depends on. I'm trying to get the elapsed time for building each library without success.

I have tried to use AddPreAction()/AddPostAction() for calculating the elapsed time but AddPreAction() is called once all the source files the library depends on have been compiled (which makes sense).

There is a post related to this issue:

How can I measure the build time for each component of a scons build?

But I would prefer to look for a more elegant solution rather than overriding some environment variables and then have to parse the output in order to calculate the times.

Thanks in advance.

Answer 1

You can get timing information on various different aspects of the build using the --debug=time SCons command line option, as documented in the SCons man pages

Here's an excerpt, you can read the rest in the link provided above:

--debug=time
Prints various time profiling information: the time spent executing each 
individual build command; the total build time (time SCons ran from 
beginning to end); the total time spent reading and executing SConscript 
files; the total time spent SCons itself spend running (that is, not 
counting reading and executing SConscript files); and both the total 
time spent executing all build commands and the elapsed wall-clock 
time spent executing those build commands...