it seems because ARCHINCLUDES try to figure out the search path by invoking shell script:
But wouldn't that affect all platforms proportionally? Why would that cause such a huge increase on MSYS2.
I saw a 7 minute build time on Cygwin. That is also very high, but not at all the kind of time increase that Johannes is seeing. I was building on Cygwin at about 3 minutes at some time in the past, so the build time has increases significantly for me too.
On Cygwin, I have always noticed that the build rate would slow down when it got the to the drivers/ directory. It would slow by a factor of 2-3X. This, we disccovered, as do to all of the include paths that had to be searched. When you build the drivrs/, there can be many include paths that really slows down the build.
Could something like that be happening here too?
