Micro-XRCE-DDS on Adafruit Feather M0 using PlatformIO + Zephyr framework

[Kara-Ro]

Hello,
I am trying to compile Micro-XRCE-DDS-Client library to be used on Adafruit Feather M0 using PlatformIO with Zephyr framework.
It is rather similar to the other open topic "Adafruit Feather M0 using PlatformIO + Zephyr framework"
I got a lot of inspiration from there but I am still not quite there.

I follow: #208 (comment)
I successfully compiled Micro-CDR without any warnings.
When I try to compile the MicroXRCE-DDS-Client it fails when compiling time.c.obj.

`~/rfm69hcw/lib/MicroXRCE-DDS-Client/build$ make

[ 2%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/stream/input_best_effort_stream.c.obj
[ 5%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/stream/input_reliable_stream.c.obj
[ 8%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/stream/output_best_effort_stream.c.obj
[ 11%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/stream/output_reliable_stream.c.obj
[ 14%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/stream/stream_storage.c.obj
[ 17%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/stream/stream_id.c.obj
[ 20%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/stream/seq_num.c.obj
[ 23%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/session.c.obj
[ 26%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/session_info.c.obj
[ 29%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/submessage.c.obj
[ 32%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/session/object_id.c.obj
[ 35%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/serialization/xrce_types.c.obj
[ 38%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/serialization/xrce_header.c.obj
[ 41%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/core/serialization/xrce_subheader.c.obj
[ 44%] Building C object CMakeFiles/microxrcedds_client.dir/src/c/util/time.c.obj
In file included from /home/kara_ro/.platformio/packages/framework-zephyr/include/toolchain.h:50,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel_includes.h:19,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel.h:17,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/posix/time.h:59,
from /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/util/time.c:3:
/home/kara_ro/.platformio/packages/framework-zephyr/include/toolchain/gcc.h:509:2: error: #error processor architecture not supported
509 | #error processor architecture not supported
| ^~~~~
In file included from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel_includes.h:28,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel.h:17,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/posix/time.h:59,
from /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/util/time.c:3:
/home/kara_ro/.platformio/packages/framework-zephyr/include/kernel_structs.h:136:19: error: 'CONFIG_MP_NUM_CPUS' undeclared here (not in a function)
136 | struct _cpu cpus[CONFIG_MP_NUM_CPUS];
| ^~~~~~~~~~~~~~~~~~
In file included from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel_includes.h:33,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel.h:17,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/posix/time.h:59,
from /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/util/time.c:3:
/home/kara_ro/.platformio/packages/framework-zephyr/include/arch/cpu.h:33:2: error: #error "Unknown Architecture"
33 | #error "Unknown Architecture"
| ^~~~~
In file included from /home/kara_ro/.platformio/packages/framework-zephyr/include/sys_clock.h:25,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel_includes.h:35,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel.h:17,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/posix/time.h:59,
from /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/util/time.c:3:
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'sys_clock_hw_cycles_per_sec':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:55:9: error: 'CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC' undeclared (first use in this function)
55 | return CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:55:9: note: each undeclared identifier is reported only once for each function it appears in
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ms_to_ticks_floor32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:302:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
302 | return z_tmcvt(t, Z_HZ_ms, Z_HZ_ticks, true, true, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ms_to_ticks_floor64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:316:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
316 | return z_tmcvt(t, Z_HZ_ms, Z_HZ_ticks, true, false, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ms_to_ticks_near32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:330:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
330 | return z_tmcvt(t, Z_HZ_ms, Z_HZ_ticks, true, true, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ms_to_ticks_near64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:344:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
344 | return z_tmcvt(t, Z_HZ_ms, Z_HZ_ticks, true, false, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ms_to_ticks_ceil32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:358:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
358 | return z_tmcvt(t, Z_HZ_ms, Z_HZ_ticks, true, true, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ms_to_ticks_ceil64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:372:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
372 | return z_tmcvt(t, Z_HZ_ms, Z_HZ_ticks, true, false, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_us_to_ticks_floor32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:470:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
470 | return z_tmcvt(t, Z_HZ_us, Z_HZ_ticks, true, true, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_us_to_ticks_floor64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:484:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
484 | return z_tmcvt(t, Z_HZ_us, Z_HZ_ticks, true, false, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_us_to_ticks_near32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:498:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
498 | return z_tmcvt(t, Z_HZ_us, Z_HZ_ticks, true, true, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_us_to_ticks_near64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:512:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
512 | return z_tmcvt(t, Z_HZ_us, Z_HZ_ticks, true, false, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_us_to_ticks_ceil32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:526:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
526 | return z_tmcvt(t, Z_HZ_us, Z_HZ_ticks, true, true, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_us_to_ticks_ceil64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:540:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
540 | return z_tmcvt(t, Z_HZ_us, Z_HZ_ticks, true, false, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ns_to_ticks_floor32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:638:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
638 | return z_tmcvt(t, Z_HZ_ns, Z_HZ_ticks, true, true, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ns_to_ticks_floor64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:652:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
652 | return z_tmcvt(t, Z_HZ_ns, Z_HZ_ticks, true, false, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ns_to_ticks_near32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:666:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
666 | return z_tmcvt(t, Z_HZ_ns, Z_HZ_ticks, true, true, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ns_to_ticks_near64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:680:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
680 | return z_tmcvt(t, Z_HZ_ns, Z_HZ_ticks, true, false, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ns_to_ticks_ceil32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:694:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
694 | return z_tmcvt(t, Z_HZ_ns, Z_HZ_ticks, true, true, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ns_to_ticks_ceil64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:708:29: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
708 | return z_tmcvt(t, Z_HZ_ns, Z_HZ_ticks, true, false, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_cyc_to_ticks_floor32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:974:30: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
974 | return z_tmcvt(t, Z_HZ_cyc, Z_HZ_ticks, Z_CCYC, true, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_cyc_to_ticks_floor64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:988:30: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
988 | return z_tmcvt(t, Z_HZ_cyc, Z_HZ_ticks, Z_CCYC, false, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_cyc_to_ticks_near32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1002:30: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1002 | return z_tmcvt(t, Z_HZ_cyc, Z_HZ_ticks, Z_CCYC, true, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_cyc_to_ticks_near64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1016:30: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1016 | return z_tmcvt(t, Z_HZ_cyc, Z_HZ_ticks, Z_CCYC, false, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_cyc_to_ticks_ceil32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1030:30: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1030 | return z_tmcvt(t, Z_HZ_cyc, Z_HZ_ticks, Z_CCYC, true, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_cyc_to_ticks_ceil64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1044:30: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1044 | return z_tmcvt(t, Z_HZ_cyc, Z_HZ_ticks, Z_CCYC, false, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ms_floor32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1058:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1058 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ms, true, true, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ms_floor64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1072:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1072 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ms, true, false, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ms_near32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1086:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1086 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ms, true, true, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ms_near64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1100:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1100 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ms, true, false, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ms_ceil32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1114:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1114 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ms, true, true, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ms_ceil64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1128:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1128 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ms, true, false, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_us_floor32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1142:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1142 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_us, true, true, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_us_floor64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1156:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1156 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_us, true, false, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_us_near32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1170:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1170 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_us, true, true, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_us_near64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1184:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1184 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_us, true, false, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_us_ceil32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1198:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1198 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_us, true, true, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_us_ceil64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1212:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1212 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_us, true, false, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ns_floor32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1226:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1226 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ns, true, true, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ns_floor64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1240:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1240 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ns, true, false, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ns_near32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1254:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1254 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ns, true, true, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ns_near64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1268:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1268 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ns, true, false, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ns_ceil32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1282:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1282 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ns, true, true, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_ns_ceil64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1296:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1296 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_ns, true, false, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_cyc_floor32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1310:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1310 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_cyc, Z_CCYC, true, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_cyc_floor64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1324:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1324 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_cyc, Z_CCYC, false, false, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_cyc_near32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1338:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1338 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_cyc, Z_CCYC, true, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_cyc_near64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1352:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1352 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_cyc, Z_CCYC, false, false, true);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_cyc_ceil32':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1366:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1366 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_cyc, Z_CCYC, true, true, false);
| ^~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h: In function 'k_ticks_to_cyc_ceil64':
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/time_units.h:1380:20: error: 'CONFIG_SYS_CLOCK_TICKS_PER_SEC' undeclared (first use in this function)
1380 | return z_tmcvt(t, Z_HZ_ticks, Z_HZ_cyc, Z_CCYC, false, true, false);
| ^~~~~~~~~~
In file included from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel_includes.h:37,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel.h:17,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/posix/time.h:59,
from /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/util/time.c:3:
/home/kara_ro/.platformio/packages/framework-zephyr/include/fatal.h: At top level:
/home/kara_ro/.platformio/packages/framework-zephyr/include/fatal.h:83:59: error: unknown type name 'z_arch_esf_t'
83 | void k_sys_fatal_error_handler(unsigned int reason, const z_arch_esf_t *esf);
| ^~~~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/fatal.h:99:47: error: unknown type name 'z_arch_esf_t'
99 | void z_fatal_error(unsigned int reason, const z_arch_esf_t *esf);
| ^~~~~~~~~~~~
In file included from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel/sched_priq.h:9,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel_includes.h:23,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel.h:17,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/posix/time.h:59,
from /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/util/time.c:3:
/home/kara_ro/.platformio/packages/framework-zephyr/include/kernel/thread_stack.h: In function 'z_stack_ptr_align':
/home/kara_ro/.platformio/packages/framework-zephyr/include/kernel/thread_stack.h:71:17: error: 'ARCH_STACK_PTR_ALIGN' undeclared (first use in this function)
71 | return (char *)ROUND_DOWN(ptr, ARCH_STACK_PTR_ALIGN);
| ^~~~~~~~~~
In file included from /home/kara_ro/.platformio/packages/framework-zephyr/include/app_memory/mem_domain.h:15,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel_includes.h:40,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel.h:17,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/posix/time.h:59,
from /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/util/time.c:3:
/home/kara_ro/.platformio/packages/framework-zephyr/include/kernel/thread.h: At top level:
/home/kara_ro/.platformio/packages/framework-zephyr/include/kernel/thread.h:206:23: error: field 'callee_saved' has incomplete type
206 | struct _callee_saved callee_saved;
| ^~~~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/kernel/thread.h:292:22: error: field 'arch' has incomplete type
292 | struct _thread_arch arch;
| ^~~~
In file included from /home/kara_ro/.platformio/packages/framework-zephyr/include/posix/time.h:59,
from /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/util/time.c:3:
/home/kara_ro/.platformio/packages/framework-zephyr/include/kernel.h:43:2: error: #error Zero available thread priorities defined!
43 | #error Zero available thread priorities defined!
| ^~~~~
In file included from /home/kara_ro/.platformio/packages/framework-zephyr/include/arch/cpu.h:12,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel_includes.h:33,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/kernel.h:17,
from /home/kara_ro/.platformio/packages/framework-zephyr/include/posix/time.h:59,
from /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/util/time.c:3:
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/arch_interface.h:59:24: warning: 'arch_k_cycle_get_32' used but never defined
59 | static inline uint32_t arch_k_cycle_get_32(void);
| ^~~~~~~~~~~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/arch_interface.h:240:28: warning: 'arch_irq_lock' used but never defined
240 | static inline unsigned int arch_irq_lock(void);
| ^~~~~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/arch_interface.h:247:20: warning: 'arch_irq_unlock' used but never defined
247 | static inline void arch_irq_unlock(unsigned int key);
| ^~~~~~~~~~~~~~~
/home/kara_ro/.platformio/packages/framework-zephyr/include/sys/arch_interface.h:256:20: warning: 'arch_irq_unlocked' declared 'static' but never defined [-Wunused-function]
256 | static inline bool arch_irq_unlocked(unsigned int key);
| ^~~~~~~~~~~~~~~~~
make[2]: *** [CMakeFiles/microxrcedds_client.dir/build.make:272: CMakeFiles/microxrcedds_client.dir/src/c/util/time.c.obj] Error 1
make[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/microxrcedds_client.dir/all] Error 2
make: *** [Makefile:136: all] Error 2`

I am trying to use compiler, settings, header files, and flags that I exctracted from platformIO after running:
`pio run -v

...
arm-none-eabi-gcc -o .pio/build/adafruit_feather_m0/src/main.o -c -Os -imacros /home/kara_ro/rfm69hcw/.pio/build/adafruit_feather_m0/zephyr/include/generated/autoconf.h -ffreestanding -fno-common -g -gdwarf-4 -fdiagnostics-color=always -mcpu=cortex-m0plus -mthumb -mabi=aapcs -mfp16-format=ieee -imacros /home/kara_ro/.platformio/packages/framework-zephyr/include/toolchain/zephyr_stdint.h -Wall -Wformat -Wformat-security -Wno-format-zero-length -Wno-main -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-unused-but-set-variable -Werror=implicit-int -fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-strict-overflow -fno-reorder-functions -fno-defer-pop -fmacro-prefix-map=/home/kara_ro/rfm69hcw/zephyr=CMAKE_SOURCE_DIR -fmacro-prefix-map=/home/kara_ro/.platformio/packages/framework-zephyr=ZEPHYR_BASE -ffunction-sections -fdata-sections -std=c99 -nostdinc -isystem /home/kara_ro/.platformio/packages/framework-zephyr/lib/libc/minimal/include -isystem /home/kara_ro/.platformio/packages/toolchain-gccarmnoneeabi@1.80201.181220/bin/../lib/gcc/arm-none-eabi/8.2.1/include -isystem /home/kara_ro/.platformio/packages/toolchain-gccarmnoneeabi@1.80201.181220/bin/../lib/gcc/arm-none-eabi/8.2.1/include-fixed -DPLATFORMIO=60118 -DARDUINO_SAMD_ZERO -DARDUINO_SAMD_FEATHER_M0 -DARM_MATH_CM0PLUS -D__SAMD21G18A__ -DBUILD_VERSION=zephyr-v20701 -DKERNEL -D_FORTIFY_SOURCE=2 -D__PROGRAM_START -D__ZEPHYR__=1 -Iinclude -Isrc -Ilib/MicroXRCE-DDS-Client/include -I/home/kara_ro/.platformio/packages/framework-zephyr/include -I.pio/build/adafruit_feather_m0/zephyr/include/generated -I/home/kara_ro/.platformio/packages/framework-zephyr/soc/arm/atmel_sam0/samd21 -I/home/kara_ro/.platformio/packages/framework-zephyr/drivers -I/home/kara_ro/.platformio/packages/framework-zephyr/soc/arm/atmel_sam0/common -I/home/kara_ro/.platformio/packages/framework-zephyr/_pio/modules/hal/cmsis/CMSIS/Core/Include -I/home/kara_ro/.platformio/packages/framework-zephyr/_pio/modules/hal/atmel/asf/sam0/include/samd21 src/main.c
...
`

Finally, my toolchain file is:
`
set(CMAKE_CROSSCOMPILING True)
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR ARM)
set(PLATFORM_NAME "zephyr")

set(CMAKE_C_COMPILER_WORKS TRUE)
set(CMAKE_CXX_COMPILER_WORKS TRUE)

set(ARM_GCC_BIN "$ENV{HOME}/.platformio/packages/toolchain-gccarmnoneeabi/bin")

set(CMAKE_C_COMPILER "${ARM_GCC_BIN}/arm-none-eabi-gcc")
set(CMAKE_CXX_COMPILER "${ARM_GCC_BIN}/arm-none-eabi-g++")
set(CMAKE_ASM_COMPILER "${ARM_GCC_BIN}/arm-none-eabi-gcc")

set(CMAKE_AR "${ARM_GCC_BIN}/arm-none-eabi-ar")
set(CMAKE_OBJCOPY "${ARM_GCC_BIN}/arm-none-eabi-objcopy")
set(CMAKE_SIZE "${ARM_GCC_BIN}/arm-none-eabi-size")

set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)

set(MCU_FLAGS "-mcpu=cortex-m0plus -mthumb -mabi=aapcs -mfp16-format=ieee")

set(OPT_DEBUG_FLAGS "-Os -g -gdwarf-4 -ffreestanding -fno-common")

set(WARN_FLAGS "-Wall -Wformat -Wformat-security -Wno-format-zero-length -Wno-main -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-unused-but-set-variable -Werror=implicit-int -fdiagnostics-color=always")

set(OTHER_FLAGS "-fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-strict-overflow -fno-reorder-functions -fno-defer-pop -ffunction-sections -fdata-sections -std=c99 -nostdinc")

set(CMAKE_C_FLAGS "${MCU_FLAGS} ${OPT_DEBUG_FLAGS} ${WARN_FLAGS} ${OTHER_FLAGS}")

set(CMAKE_CXX_FLAGS "${MCU_FLAGS} ${OPT_DEBUG_FLAGS} ${WARN_FLAGS} ${OTHER_FLAGS} -fno-exceptions -fno-rtti")

add_definitions(
-DPLATFORMIO=60118
-DARDUINO_SAMD_ZERO
-DARDUINO_SAMD_FEATHER_M0
-DARM_MATH_CM0PLUS
-D__SAMD21G18A__
-DBUILD_VERSION=zephyr-v20701
-DKERNEL
-D_FORTIFY_SOURCE=2
-D__PROGRAM_START
-D__ZEPHYR__=1
)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

include_directories(SYSTEM
"/home/kara_ro/.platformio/packages/framework-zephyr/include"
"/home/kara_ro/.platformio/packages/framework-zephyr/include/kernel"
"/home/kara_ro/.platformio/packages/framework-zephyr/include/zephyr"
"/home/kara_ro/.platformio/packages/framework-zephyr/include/posix"
"/home/kara_ro/.platformio/packages/framework-zephyr/lib/libc/minimal/include"
"/home/kara_ro/.platformio/packages/framework-zephyr/lib/libc/posix/include"
"/home/kara_ro/.platformio/packages/toolchain-gccarmnoneeabi@1.80201.181220/lib/gcc/arm-none-eabi/8.2.1/include"
"/home/kara_ro/.platformio/packages/toolchain-gccarmnoneeabi@1.80201.181220/lib/gcc/arm-none-eabi/8.2.1/include-fixed"
"/home/kara_ro/.platformio/packages/framework-zephyr/soc/arm/atmel_sam0/samd21"
"/home/kara_ro/.platformio/packages/framework-zephyr/drivers"
"/home/kara_ro/.platformio/packages/framework-zephyr/soc/arm/atmel_sam0/common"
"/home/kara_ro/.platformio/packages/framework-zephyr/_pio/modules/hal/cmsis/CMSIS/Core/Include"
"/home/kara_ro/.platformio/packages/framework-zephyr/_pio/modules/hal/atmel/asf/sam0/include/samd21"
"/home/kara_ro/rfm69hcw/.pio/build/adafruit_feather_m0/zephyr/include/generated"
)`

It does not seem to be too plausible that procesorr architecture ARM is not supported as claimed in the error.
Thank you for any advice.

[Kara-Ro]

I moved a bit forward. I was missing the imacros to include generated header files:
/home/kara_ro/rfm69hcw/.pio/build/adafruit_feather_m0/zephyr/include/generated/autoconf.h /home/kara_ro/.platformio/packages/framework-zephyr/include/toolchain/zephyr_stdint.h
If that woudn't be enough I turned inserted:

CONFIG_POSIX_API=y
CONFIG_POSIX_CLOCK=y

into:
zephyr/prj.conf
Then the compilation was dying because of:
/home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/profile/discovery/transport/udp_transport_datagram_posix.c: In function 'uxr_bytes_to_ip': /home/kara_ro/rfm69hcw/lib/MicroXRCE-DDS-Client/src/c/profile/discovery/transport/udp_transport_datagram_posix.c:93:20: error: 'in_addr_t' undeclared (first use in this function); did you mean 'in_addr'? addr.s_addr = (in_addr_t)(*bytes + (*(bytes + 1) << 8) + (*(bytes + 2) << 16) + (*(bytes + 3) << 24));
The in_addr_t type is defined in sys/types.h but it is masked by __BSD_VISIBLE parameter which is on when _DEFAULT_SOURCE is on and that seems to be turned on by _GNU_SOURCE parameter in my case. At least that is show by my IntelliSense that is generated by platformIO. I know that does not mean it is true. There can be discrepancy between this setting and what is happening in cmake.
I was trying some brute-force steps like adding _GNU_SOURCE, _DEFAULT_SOURCE even __BSD_VISIBLE to my toolchain.cmake file into add_definitions. That did not solve the issue. I tried to add it into the build flags in platformio.ini and then in my project main define variable of the in_addr_t datatype. which also did not work.
If any of you might have a better guess how should I achieve it it would be appreciated.

Anyway, I was able to compile the MicroXRCE-DDS-Client by defining:

#define __UINT32_TYPE__ unsigned int
typedef __UINT32_TYPE__ __uint32_t;
typedef	__uint32_t	in_addr_t;

directly in MicroXRCE-DDS-Client/src/c/profile/discovery/transport/udp_transport_datagram_posix.c

Which is really dirty and I did not yet verify that the compiled static library actually works in the microcontroller.

My current toolchain.cmake is:

include(CMakeForceCompiler)
set(CMAKE_SYSTEM_NAME Generic)
set(PLATFORM_NAME "zephyr")
set(CMAKE_CROSSCOMPILING TRUE)
set(CMAKE_C_COMPILER_WORKS TRUE)
set(CMAKE_CXX_COMPILER_WORKS TRUE)

set(ARM_GCC_BIN "$ENV{HOME}/.platformio/packages/toolchain-gccarmnoneeabi@1.80201.181220/bin")

set(CMAKE_C_COMPILER "${ARM_GCC_BIN}/arm-none-eabi-gcc")
set(CMAKE_CXX_COMPILER "${ARM_GCC_BIN}/arm-none-eabi-g++")
set(CMAKE_ASM_COMPILER "${ARM_GCC_BIN}/arm-none-eabi-gcc")

set(CMAKE_AR "${ARM_GCC_BIN}/arm-none-eabi-ar")
set(CMAKE_OBJCOPY "${ARM_GCC_BIN}/arm-none-eabi-objcopy")
set(CMAKE_SIZE "${ARM_GCC_BIN}/arm-none-eabi-size")

set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)

set(MCU_FLAGS "-mcpu=cortex-m0plus -mthumb -mabi=aapcs -mfp32-format=ieee")
set(OPT_DEBUG_FLAGS "-Os -g -gdwarf-4 -ffreestanding -fno-common")
set(WARN_FLAGS "-Wall -Wformat -Wformat-security -Wno-format-zero-length -Wno-main -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-unused-but-set-variable -Wno-unused-parameter -Werror=implicit-int -Wno-conversion -Wno-int-conversion -Wno-mpfsign-conversion -fdiagnostics-color=always")
set(OTHER_FLAGS "-fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-strict-overflow -fno-reorder-functions -fno-defer-pop")
set(AUTO_CONF "-imacros /home/kara_ro/rfm69hcw/.pio/build/adafruit_feather_m0/zephyr/include/generated/autoconf.h")
set(ZEPHYR_STD_INT "-imacros /home/kara_ro/.platformio/packages/framework-zephyr/include/toolchain/zephyr_stdint.h")


set(CMAKE_C_FLAGS "${AUTO_CONF} ${OPT_DEBUG_FLAGS} ${ZEPHYR_STD_INT} ${WARN_FLAGS} ${OTHER_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS} -fcheck-new -fno-exceptions -fno-rtti -nostdinc++")

add_definitions(
  -DPLATFORMIO=60118 
  -DARDUINO_SAMD_ZERO 
  -DARDUINO_SAMD_FEATHER_M0 
  -DARM_MATH_CM0PLUS 
  -D__SAMD21G18A__ 
  -DBUILD_VERSION=zephyr-v20701
)

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

include_directories(SYSTEM
  "/home/kara_ro/.platformio/packages/framework-zephyr/lib/libc/minimal/include"
  "/home/kara_ro/.platformio/packages/toolchain-gccarmnoneeabi@1.80201.181220/lib/gcc/arm-none-eabi/8.2.1/include"
  "/home/kara_ro/.platformio/packages/toolchain-gccarmnoneeabi@1.80201.181220/lib/gcc/arm-none-eabi/8.2.1/include-fixed"
)
include_directories(
  "/home/kara_ro/.platformio/packages/framework-zephyr/kernel/include"
  "/home/kara_ro/.platformio/packages/framework-zephyr/arch/arm/include"
  "/home/kara_ro/.platformio/packages/framework-zephyr/include"
  "/home/kara_ro/.platformio/packages/framework-zephyr/soc/arm/atmel_sam0/samd21"
  "/home/kara_ro/.platformio/packages/framework-zephyr/drivers"
  "/home/kara_ro/.platformio/packages/framework-zephyr/soc/arm/atmel_sam0/common"
  "/home/kara_ro/.platformio/packages/framework-zephyr/_pio/modules/hal/cmsis/CMSIS/Core/Include"
  "/home/kara_ro/.platformio/packages/framework-zephyr/_pio/modules/hal/atmel/asf/sam0/include/samd21"
  "/home/kara_ro/rfm69hcw/.pio/build/adafruit_feather_m0/zephyr/include/generated"
  "/home/kara_ro/.platformio/packages/framework-zephyr/include/posix"
  "/home/kara_ro/rfm69hcw/install/microcdr-2.0.1/include"
)