Provide a "--disable-profiling" option with configure

[rollingslack]

to turn off profiling flags + Bump to autotools 1.16.1

• Version of iperf3 (or development branch, such as master or
  3.1-STABLE) to which this pull request applies: master

• Issues fixed (if any): Cross-compilation and profiling #749

• Brief description of code changes (suitable for use as a commit message):
  Provide a command line option with the configure script to disable profiling flags for gprof. (--disable-profiling)

[bmah888]

Thanks for the pull request...I've been wondering how to do this.

For future reference it's probably easiest to just submit changes to the files such as configure.ac and Makefile.am. After merging we'll re-run bootstrap.sh to regenerate the Makefile.in, etc. files. I admit we didn't communicate that.

Haven't really had a chance to play with the change yet but looking forward to it.

[bmah888]

I just tried this out...even if I use --disable-profiling, it still tries to build iperf3-profile, even without the profiling goop. Going to try something, will add another comment if this works.

[rollingslack]

thanks @bmah888 - I did not look into the bootstrap shell script. Would have made a few things much simpler. I'll have a look at this and submit a new PR with just the configure.ac and makefile.am changes.
Do you want to go ahead and reject this PR to clear the decks for that ?

[bmah888]

Sure I can close this PR (I guess you have done that too?). Looking forward to seeing the new version. Thanks for working on this, as you probably know a number of people have asked for it.

[rollingslack]

#763 is the new PR !