Windows cross compiles

[Erik Joelsson]

On 2013-08-26 03:51, David Holmes wrote:
> On 24/08/2013 11:26 AM, Tim Bell wrote:
>> On 08/23/13 02:15 PM, Salter, Thomas A wrote:
>>> Is there any hope of compiling a 64-bit Windows JVM on a 32-bit O/S?
>>
>> We are headed in the other direction with OpenJDK 8 on Windows -
>> compiling both 32 and 64-bit using Windows 2008R2 64-bit as the O/S and
>> Visual Studio 2010 SP1 as the compiler.  We have very few 32-bit Windows
>> systems left, and those we have are dedicated to building earlier JDK
>> releases.
>
> That aside though, if the windows 32-bit dev tools support building 
> 64-bit binaries (I have no idea if they do) then it should be as 
> simple as configuring with --with-target-bits=64. But so far all our 
> cross-compiling of this form has been on linux and only tested for 
> building 32-bit on a 64-bit host.
>
There is partial support in there, but some details missing. I believe 
it can be made to work with some tweaks though. The parameter David 
suggests is the correct starting point.

/Erik

> David
>
>> Tim
>>
>>> I tried a few options and other tweaks and got as far as configure
>>> compiling a 64-bit fixpath.exe and then discovering that it won't run
>>> on a 32-bit system.
>>>
>>> I don't mind changing the make files but I'm not up for learning how
>>> to generate the configure script.
>>>
>>> Tom Salter  |  Software Engineer  |  Java & Middleware Development
>>> Unisys  |  2476 Swedesford Road  |  Malvern, PA  19355   |
>>> 610-648-2568 |  N385-2568
>>>
>>>
>>