Armv6l support

[KweezyCode]

i get crash with arm 32 bit version of zstd-jni
hardware: raspberry pi zero w

# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGILL (0x4) at pc=0x98a63bd8, pid=2615, tid=2876
#
# JRE version: OpenJDK Runtime Environment (17.0.13+11) (build 17.0.13+11-Raspbian-2deb12u1rpt1)
# Java VM: OpenJDK Client VM (17.0.13+11-Raspbian-2deb12u1rpt1, mixed mode, emulated-client, serial gc, linux-arm)
# Problematic frame:
# C  [libzstd-jni-1.5.6-811435271611719122767.so+0x3bd8]
#
# No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/kweezy/1_5_2/hs_err_pid2615.log
#
# If you would like to submit a bug report, please visit:
#   Unknown
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

hs_err_pid2615.log

[luben]

Hmm, yes. Looks we compiled it for arm7 architecture. Let me try next release to target arm6 - it is forward compatible with arm7 so it should not pose problems to existing users as we will not use Thumb-1 extension

[luben]

Can you try v1.5.6-10 that I just pushed?