* Jakub Wilk <jw...@jwilk.net>, 2020-08-24, 18:41:
/usr/share/dpkg/architecture.mk is very slow:
$ time printf 'include /usr/share/dpkg/architecture.mk\nall:\n\ttrue\n' | make -f
- > /dev/null
real 0m1.161s
user 0m1.009s
sys 0m0.127s
strace tells me this is because it spawns dpkg-architecture 33(!) times.
This is probably fallout after fixing #888964: lazy evaluation of the
variables doesn't quite work when they are exported.
You could use something like this to set all variables with only single
dpkg-architecture call:
$(foreach var,$(shell dpkg-architecture),$(eval export $(var)))
But it would need a guard to skip the call if all the variables were
already set in environment.
--
Jakub Wilk
