DEVICE_INIT_DT_GET macro expands to undeclared

[HenrikKaa]

Describe the bug
I'm trying to get the init_entry of a device using DEVICE_INIT_DT_GET macro but when compiling the resulting __init___device_dts_ord_N is undeclared.

In my specific case
DEVICE_DT_GET(DT_NODELABEL(spiflash)) expands to &__device_dts_ord_104 (which is correct)
DEVICE_INIT_DT_GET(DT_NODELABEL(spiflash)) expands to &__init___device_dts_ord_104 (which is undeclared)

The grep result from build folder (without the offending lines)

grep -r "__init___device_dts_ord_104"
grep: build/zephyr/zephyr_pre0.elf: binary file matches
grep: build/zephyr/zephyr.elf: binary file matches
grep: build/zephyr/drivers/flash/CMakeFiles/drivers__flash.dir/spi_nor.c.obj: binary file matches
grep: build/zephyr/drivers/flash/libdrivers__flash.a: binary file matches
grep: build/zephyr/zephyr_pre1.elf: binary file matches

So clearly the init function does exist but something goes wrong compiling. The actual init function can also be found in zephyr.map if I remove the offending lines.

 .z_init_POST_KERNEL80_
                0x0000000010022cf8        0x8 zephyr/drivers/flash/libdrivers__flash.a(spi_nor.c.obj)

To Reproduce
I can't say more than try to use the macro, it does not work for any device in my project. However, tests/lib/devicetree/devices runs just fine.

Expected behavior
Get reference to the devices init_entry.

Impact
Major annoyance

Logs and console output

/.../zephyr/include/zephyr/init.h:107:44: error: '__init___device_dts_ord_104' undeclared (first use in this function); did you mean '__device_dts_ord_104'?
  107 | #define Z_INIT_ENTRY_NAME(init_id) _CONCAT(__init_, init_id)

Environment (please complete the following information):

• OS: Linux (Ubuntu 22.04)
• Zephyr SDK 0.16.1
• Zephyr 3.3.99

[gmarull]

Provided tests/lib/devicetree/devices runs just fine, it looks like a problem on your setup. I'd also discourage usage of this API, not even sure why it's there.

[HenrikKaa]

I think it is the only way to run initialisation functions manually until this progresses #39896

[aasinclair]

This looks to be caused by static here:

zephyr/include/zephyr/device.h

Line 972 in 38010c1

static const Z_DECL_ALIGN(struct init_entry) __used __noasan Z_INIT_ENTRY_SECTION( \

The unit test works because the device is declared in the same file.