MCUMGR_LOG build error

[lgl88911]

Describe the bug
when I config CONFIG_MCUMGR_CMD_LOG_MGMT=y, mcumgr log will build error:

error 1: create makefile fail:

Cannot find source file:
/home/frank/work/project/westzephyr/zephyr/ext/lib/mgmt/mcumgr/cmd/log_mgmt/cmd/log_mgmt/port/zephyr/src/zephyr_log_mgmt.c

I fix it by modify zephyr/ext/lib/mgmt/mcumgr/cmd/log_mgmt/CMakeLists.txt

target_include_directories(MCUMGR INTERFACE 
    include
)

zephyr_library_sources(
    port/zephyr/src/zephyr_log_mgmt.c
    src/log_mgmt.c
    src/stubs.c
)

then disapper
error 2 can't find file:

/home/frank/work/project/westzephyr/zephyr/ext/lib/mgmt/mcumgr/cmd/log_mgmt/port/zephyr/src/zephyr_log_mgmt.c:21:10: fatal error: logging/mdlog.h: No such file or directory
 #include <logging/mdlog.h>

I search zephyr path & west path， can't find mdlog， but it be used by zephyr_log_mgmt.c.
It's a bug? or I config have some error?
Please give me some suggest, thanks!

[carlescufi]

That file doesn't seem to have ever existed. It might be that this has never been correctly tested. @ccollins476ad can you shed some light?

[carlescufi]

Relabeled as enhancement since this has never been actually supported. Contributors welcome to address this.

[pabigot]

It appears that when this was originally contributed in apache/mynewt-mcumgr@96dc9d8 it referenced a managed log infrastructure that was not part of the contribution. I can find no history of it ever being in Zephyr, nor elsewhere.

The dependency reference was removed from Zephyr in 4db7cce leaving the mistaken impression that CONFIG_MCUMGR_CMD_LOG_MGMT ever had a chance of working in Zephyr.

It would probably be good to remove the entire cmd/log_mgmt/port/zephyr hierarchy and everything referencing it from upstream mcumgr, and from Zephyr itself. It's continued presence (and marking as "currently disabled" in the Zephyr documentation without explanation) will confuse and waste the time of users interested in getting log information off a device.