ARM support for Linux about fiskaly-kassensichv-sma

[cjaentsch]

It's a Raspberry Pi 3 Model B Plus Rev1.3 (copied from raspi-config)

This model actually should work with arm64, correct? But os.arch only says "arm". We'll I'll try to force arm64 then and see if it works. Today I'm not in the office but I will report tomorrow.

[pgaubatz]

It's a Raspberry Pi 3 Model B Plus Rev1.3

Oh... then you should probably try loading the arm64 variant...

[cjaentsch]

It's a Raspberry Pi 3 Model B Plus Rev1.3

Oh... then you should probably try loading the arm64 variant...

As said in the "edit" of my comment, I'll try that tomorrow and report back.

[cjaentsch]

Hi, sorry for the delayed answer. Please try com.fiskaly.kassensichv.sma-linux-armhf.so (added in 340bfed).

Thumbs up! This works!

[pgaubatz]

We've just added an experimental build for linux ARM/ARM64 in #2.
Maybe you could give it a try?

[cjaentsch]

Unfortunately it does not work...

I get an Error:

java.lang.UnsatisfiedLinkError: /tmp/com.fiskaly.kassensichv.sma-linux-arm.so: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden
at jnr.ffi.provider.jffi.NativeLibrary.loadNativeLibraries(NativeLibrary.java:87)
at jnr.ffi.provider.jffi.NativeLibrary.getNativeLibraries(NativeLibrary.java:70)
at jnr.ffi.provider.jffi.NativeLibrary.getSymbolAddress(NativeLibrary.java:49)
at jnr.ffi.provider.jffi.NativeLibrary.findSymbolAddress(NativeLibrary.java:59)
at jnr.ffi.provider.jffi.AsmLibraryLoader.generateInterfaceImpl(AsmLibraryLoader.java:158)
at jnr.ffi.provider.jffi.AsmLibraryLoader.loadLibrary(AsmLibraryLoader.java:89)
at jnr.ffi.provider.jffi.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:44)
at jnr.ffi.LibraryLoader.load(LibraryLoader.java:325)
at jnr.ffi.LibraryLoader.load(LibraryLoader.java:304)
at com.fiskaly.kassensichv.sma.SmaLoader.load(SmaLoader.java:110)
at com.fiskaly.kassensichv.sma.GeneralSMA.(GeneralSMA.java:11)

The file is there (and I also added all rights to exclude any problems concering rights)...

pi@gn_server:/tmp $ ls -la
insgesamt 14180
drwxrwxrwt 12 root root 4096 Sep 16 17:48 .
drwxr-xr-x 21 root root 4096 Nov 12 2018 ..
-rwxrwxrwx 1 pi pi 7185348 Sep 16 17:29 com.fiskaly.kassensichv.sma-linux-arm.so

Environment (Raspberry Pi):
os.name: Linux
os.version: 4.14.70-v7+
os.arch: arm
java.runtime.name: Java(TM) SE Runtime Environment
java.runtime.version: 1.8.0_65-b17

[pgaubatz]

Hi, is this a raspberry pi 1, or 2+?

[pgaubatz]

Hi again! Could you test it again with the com.fiskaly.kassensichv.sma-linux-armel.so library? You'd have to manually adapt the source code of the client library loader to use the armel suffix until we've added a hard-float/soft-float detection mechanism in the client libraries (something like https://github.com/java-native-access/jna/blob/cc1acdac02e4d0dda93ba01bbe3a3435b8933dab/src/com/sun/jna/Platform.java#L262)...

[cjaentsch]

So, when using the "armel.so" I still get
java.lang.UnsatisfiedLinkError: /tmp/com.fiskaly.kassensichv.sma-linux-arm.so: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden

When using the "arm64.so" I get
java.lang.UnsatisfiedLinkError: /tmp/com.fiskaly.kassensichv.sma-linux-arm.so: falsche ELF-Klasse: ELFCLASS64

FYI: uname -a returns the following
Linux gn_server 4.14.70-v7+ #1144 SMP Tue Sep 18 17:34:46 BST 2018 armv7l GNU/Linux

[cjaentsch]

I just wanted to ask if I can provide any more information concerning the Pi ARM issue... I did some research and it says that the armv7l uses "armhf".

[pgaubatz]

Hi, sorry for the delayed answer. Please try com.fiskaly.kassensichv.sma-linux-armhf.so (added in 340bfed).