[fpc-pascal] fpc code for Java class and Android.

[Paul Breneman]

On 04/19/2017 09:48 PM, Jon Foster wrote:
> On 04/19/2017 06:01 AM, Paul Breneman wrote:
>> On 04/18/2017 07:38 AM, Paul Breneman wrote:
>>> On 04/17/2017 08:42 PM, Jon Foster wrote:
>>> ...
>>>> You have to copy the app to "/data/tmp" as that is usually the only
>>>> place on Android with a Linux file system that all users have access
>>>> to.
>>>> You can't look in there so you kind of have to fly blind. :-) "Terminal
>>>> IDE" makes this easier, assuming you have a compatible Android version,
>>>> since it provides the Linux file system space, term emulator and easy
>>>> access.
>>>>
>>>> This was what I thought Paul was looking to do. FreeVision might work
>>>> depending on a number of variables... but I'm not familiar with it.
>>>> Most
>>>> Android terminal apps would provide some kind of VT100 like
>>>> emulation so
>>>> you may have to force FreeVision to output for that emulation. If it
>>>> tries to use a "termcap" through normal means it probably will crash.
>>>>
>>>
>>> Thanks Jon *very* much for the details that you shared!  I hope to get
>>> time to get back into this soon and I'm sure that your notes will help.
>>
>> Well, I tried a bit this morning but have failed so far.
>>
>> With GNURoot Debian it comes up as Debian version 8.1 but I upgraded
>> to 8.7 using the instructions near the bottom of this page:
>>   http://turbocontrol.com/gnuroot.htm
>>
>> The 2.6.0 ppcarm itself fails to run with: Illegal instruction
>>
>> I also posted a new zip (not yet on web page) and tried that:
>> HelloWorld-fpc-3.0.2.arm-linux-041917.zip
>>
>> The 3.0.2 ppcarm itself fails with: Segmentation fault
>>
>> Thanks in advance for *any* suggestions.  As soon as I get this
>> working I hope to create a new wiki page so it is easier for others to
>> share. :)
>>
>> Thanks,
>> Paul Breneman
>> www.ControlPascal.com
> I don't know anything about your environment but a few possibilities
> spring to mind:
>
> 1. Newer version of Android which requires a PIC/PIE binary and you
> aren't running one or maybe even the inverse. Although I think this
> normally gives an error about "PIE" being needed, at least in the
> Android 5+ case.
>
> 2. An ABI mismatch.
>
> 3. Running on an FPU-less device with a compiler that wasn't built with
> emulation. I can't imagine what the compiler would need with an FPU though.
>
> 4. The ppcarm binary was built with a set of ARM instructions your
> device doesn't support. They've added many extensions to the core ARM
> instruction set over the years and different chip foundries can choose
> which they want to include or not.
>
> 5. Bad RAM?
>
> Since FPC is completely self contained I can't imagine anything in the
> actual Linux install would be a problem. I'm certain they are using the
> Android kernel and not doing something like UML, but I don't know
> anything about the GNUroot project. I used someone else's Linux
> installer once, originally titled "Lil' Debbie". They had to change
> their name for obvious reasons. I couldn't find a VNC client that worked
> well enough to use it though, even though my Iconia tablet sports a
> standard USB A connector and it had no trouble with a stock keyboard and
> mouse. I don't think the VNC clients I tried were expecting real input
> hardware. :-)
>

I'm using a Nexus 7 tablet with Android 6.0.1.  GNURoot provides a 
chroot with Debian?  It has been *three* years since I did this before 
and things worked then so I don't know what might have changed so ppcarm 
doesn't even run now.

Android?
GNURoot?
ppcarm?

I'm trying the *most simple* thing, so no x11 or VNC needed.