Re: builds are getting slower?

[Paul Eggert]

John Wiegley wrote:
> Which part of this is "make", and which "make check"?  Are you doing a
> bootstrap build, or a "clean" build?

When I reproduced the small part of the performance regression on Fedora x86-64 
(the part that's been fixed since then, on emacs-25), I did this:

./autogen.sh
./configure CFLAGS='-g3 -O0'
make -j5
time make bootstrap

So there's no 'make check', just a 'make bootstrap'.

'make check' is so slow that I normally don't run it these days. We should do 
what coreutils does, and run the expensive tests only if RUN_EXPENSIVE_TESTS=yes 
is in the environment.  coreutils has three categories of expensiveness, but 
Emacs could probably get by with two for now.