[vbox-dev] Windows build requirements for MinGW

[Michal Necasek]

 You'd need a VM without hardware virtualization (disabled VT-x/AMD-V). Then the recompiler which is built with MinGW would be used pretty heavily. If you can run, say, Windows XP that way then the MinGW-produced code isn't too broken.

 If you have hardware virtualization enabled then the recompiler will be used very little or not at all.


     - Michal

----- Original Message -----
From: flint at flint-inc.ru
To: frank.mehnert at oracle.com, vbox-dev at virtualbox.org
Sent: Tuesday, June 27, 2017 11:35:27 PM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna
Subject: Re: [vbox-dev] Windows build requirements for MinGW

Hi,

Just FYI, today I finally had time to try out this build I did with MinGW32
version 4.5.4, and it seems to be working OK. I did not do extensive testing
though, just installed it onto a Win7 x64 host, started a WinXP virtual machine
and worked in it for a bit. Unfortunately I'm not sure what exactly the
recompiler module does, so I don't know where to look for possible problems that
the change could cause.


> Hi,

> Fair enough, thank you very much for the information!
> I'll keep that in mind.


>> Michal is right. And years ago there was a more strict dependency to an old
>> version of gcc from code in src/recompiler. This has been fixed long time ago.
>> Newer versions of MingW will most likely work but are not tested ATM.

>> Kind regards,

>> Frank

>> On Montag, 26. Juni 2017 10:51:53 CEST Michal Necasek wrote:
>>> 
>>>  Because MinGW 3.3.3 is what's used for the official builds and it's known
>>>  to be working. Other versions may well work, they just aren't positively
>>>  known to be working.
>>> 
>>>  And no, MinGW is not needed for the Guest Additions at all.
>>> 
>>> 
>>>      - Michal
>>> 
>>> ----- Original Message -----
>>> From: flint at flint-inc.ru
>>> To: vbox-dev at virtualbox.org
>>> Sent: Monday, June 26, 2017 7:17:12 PM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna
>>> Subject: [vbox-dev] Windows build requirements for MinGW
>>> 
>>> Hi,
>>> 
>>> The wiki page https://www.virtualbox.org/wiki/Windows%20build%20instructions 
>>> says that for 32-bit build one requires MinGW 3.3.3. Why exactly this version? I 
>>> tried to build VB using MinGW32 version 4.5.4 (the same rubenvb build as 
>>> MinGW64), and it compiled without problems (except that I had to patch 
>>> configure.vbs, obviously). I did not test yet whether it works, though...
>>> 
>>> The only thing I did not compile is Guest Additions. Is it for them that version 
>>> 3.3.3 is needed? Or, maybe, some runtime compatibility with older systems (like 
>>> WinXP)? Or is it just legacy restriction not required anymore but forgotten to 
>>> be updated?


-- 
Bye.                                    With best regards,
                                        Konstantin Vlasov.

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