[Gambas-user] Moving from 64bit to 32 bit and back

[Jussi Lahtinen]

You don't have to make the choice everytime, only once.

If System.Architecture = "x86_64" Then
hClassToBeUsed = 32bitClass
Else
hClassToBeUsed = 64bitClass
Endif

hClassToBeUsed.Somefunction()


Jussi

On Sat, Jul 4, 2020 at 6:22 AM Brian G <brian at westwoodsvcs.com> wrote:

> So put every extern into two classes and then choose the one to use each
> time
>
> --
> Thanks
> Brian
> Friday, 03 July 2020, 05:17PM -07:00 from Jussi Lahtinen
> jussi.lahtinen at gmail.com:
>
> Then perhaps one alternative would be different classes for 32 and 64 bit
> systems and choose which one to use according to what System.Architecture
> returns at runtime.
>
> Jussi
>
> On Sat, Jul 4, 2020 at 2:59 AM Brian G <brian at westwoodsvcs.com> wrote:
>
> Yes that would work, but then I have to figure out the address width
> myself at compile time.
>
>    I would need to compile for each architecture .
>
>   I was trying to find a way to make the code portable that requires no
> recompile for SAME OS 32 AND 64 BIT VERSION. The same package can be
> installed on both versions and call c functions and pass structures without
> any issues....... So far lol  ... with such in-depth testing I have done...
> Three or four times ...
>
> Pointers are basically unsigned values which match size_t's nominal type
> and length.
>
> The cint and clong function are signed so it does take a little bit if
> fiddling to work properly.
>
> More testing needed of course.
>
> --
> Thanks
> Brian
> Friday, 03 July 2020, 01:40PM -07:00 from Jussi Lahtinen
> jussi.lahtinen at gmail.com:
>
> I would rather use preprocessors to define the variables, but it
> depends... your way should work.
> http://gambaswiki.org/wiki/lang/.if
>
> Jussi
>
> On Fri, Jul 3, 2020 at 4:51 AM Brian G <brian at westwoodsvcs.com> wrote:
>
> I replaced all c calls from Gambas3 that required Size_t data type with a
> pointer type in Gambas and cast the type using cint() or clong() when the
> value must be used.
>
> I did this because in most cases size_t follows the width of the address
> bus by convention.
>
> This seems to work so far.
>
> Does anyone have any thoughts on this?
>
> I would like to get some input about this if anyone have a better idea
>
> I can't see any where even in the structures I have used that this does
> not translate well.
>
> Was playing with the new raspi OS which defaults to 32 bit.
>
> Thank You
> Brian G
>
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