Re: Native compilation on Windows, was Re: Bootstrap Compilation Speed

[H. Dieter Wilhelm]

Corwin Brust <corwin@bru.st> writes:

> On Mon, Jan 31, 2022 at 9:58 AM H. Dieter Wilhelm
> <dieter@duenenhof-wilhelm.de> wrote:
>>
>> Currently we have 19 DLLs in the /bin folder (28.0.91), whereas 27.2 has
>> 77 DLLs!  Corwin could you please check your build configuration, maybe
>> together with Phil?  (I'm sorry, I'm still of no help here.)
>
> Excellent observation.
>
> I hope Phil will chime-in with suggestions of what I may have
> missed/broken.  I'll investigate also, obviously, and others'
> kibitzing most welcome too.

I think I've got, at least, a workaround!

I realised that ntldd.exe doesn't show any msys/mingw dependencies at
all, only Windows stuff! -> So I removed all Windows references from
PATH.  (Don't ask me why ntldd searches Windows paths first.)

Then, it seem's, that the msys/mingw people changed the tree layout of
their files!  When I'm changing "msys64" with "mingw64" in
build-dep-zips.py:

  def ntldd_munge(out):
      deps = out.splitlines()
      rtn = []
      for dep in deps:
          ## Output looks something like this

          ## KERNEL32.dll => C:\Windows\SYSTEM32\KERNEL32.dll 
(0x0000000002a30000)
          ## libwinpthread-1.dll => C:\msys64\mingw64\bin\libwinpthread-1.dll 
(0x0000000000090000)

          ## if it's the former, we want it, if its the later we don't
          splt = dep.split()
          ## if len(splt) > 2 and "msys64" in splt[2]:
          if len(splt) > 2 and "mingw64" in splt[2]:
              print("Adding dep", splt[0])
              rtn.append(splt[0].split(".")[0])

      return rtn

It copies much more DLLs to the deps folder.  :-)

(Oh dear, as if the whole building process wouldn't be complicated
enough..)

> Meanwhile, I suggest we should solve this problem before pushing
> 28.0.1 to the apha FTP site.  I don't want people to have different
> expectations (needing to install MSYS) vs 27.1 and the pre-releases
> Phillip created for that.
>
> (Phil, is "Phil" fine? Preference for "Philip"?  I obsess on the oddest 
> things.)

I hope so, at least he signed his emails himself repeatedly with
"Phil"... ;-)

-- 
  Dieter

Best wishes
H. Dieter Wilhelm
Zwingenberg, Germany