enable unconditional PKG3 precompile

[KristofferC]

Reopens #26431.

This needs to happen at some point so let's look at it again.

[KristofferC]

5 greens, wat...

[KristofferC]

@staticfloat is it possible to run the buildbots on this commit to try it out?

[vchuravy]

Elliot is currently busy with his thesis. I will start a series of builds and let you know what the buildbots think about this.

• Linux64: https://build.julialang.org/#/builders/43/builds/1275 green
• Linux32: https://build.julialang.org/#/builders/47/builds/1272 green
• OSX: https://build.julialang.org/#/builders/1/builds/1052 green
• Win64: https://build.julialang.org/#/builders/83/builds/1291 in progress
• Win32: https://build.julialang.org/#/builders/44/builds/1268 RED
  BTW you can launch jobs yourself, by logging into build.julialang.org with your github account, find the right package_X bot jit package and use the SHA of the commit you want to build. At the bottom of each successful build is a trigger step that launches a run of the testsuite with the given build.
  (and I really want !jlbuild back.

[vchuravy]

Got an OOM on Win32 (https://build.julialang.org/#/builders/44/builds/1268), but only during make-debug...

[KristofferC]

Ok, so the only problem is the Win32 debug build. Seems a lot better than it was a while ago when half of CI crashed.

[KristofferC]

Could we just disable it for debug builds?

[KristofferC]

Precompile statements should be a bit fewer now, rerunning CI and the buildbots.

Linux 64: https://build.julialang.org/#/builders/43/builds/1304
Linux 32: https://build.julialang.org/#/builders/47/builds/1301
OSX 64: https://build.julialang.org/#/builders/1/builds/1082
Win 32: https://build.julialang.org/#/buildrequests/17570
Win 64: https://build.julialang.org/#/buildrequests/17571

[KristofferC]

Can't get e.g. Win32 to build, it just errors after building OpenBLAS with:

make[1]: Leaving directory '/home/Administrator/buildbot/worker/package_win32/build/deps'
make: *** [Makefile:60: julia-deps] Error 2
program finished with exit code 2
elapsedTime=1937.144804

[KristofferC]

The situation with Pkg3 without precompile statements are now (perhaps the new optimizer) fairly terrible. Just doing status takes up to 6-7 seconds and adding packages is almost back to Pkg2 coffee break times. I have yet managed to get a buildbot run through because it fails on random stuff that doesn't happen with the buildbots when running from master. So the only way to test this seems to be live. I have reduced the number of precompile statements here significantly going from this makes Pkg3 feel good, to this makes Pkg3 not feel like a slow moving piece of sloth.

CircleCI fails because it is running on non rebased version of .circleci where the gcc version was not yet updated.