Gdb failed to build due to missing doc file

Hi,

I bump into the following errors when I try to build sys-devel/gdb on my 3A5000:

...skip...
make[1]: Leaving directory '/var/tmp/portage/sys-devel/gdb-9999/work/gdb-9999'
Traceback (most recent call last):
  File "/usr/lib/portage/python3.9/doins.py", line 607, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/lib/portage/python3.9/doins.py", line 596, in main
    if _doins(
  File "/usr/lib/portage/python3.9/doins.py", line 439, in _doins
    return install_runner.install_file(source, os.path.dirname(dest))
  File "/usr/lib/portage/python3.9/doins.py", line 373, in install_file
    return self._ins_runner.run(source, dest_dir)
  File "/usr/lib/portage/python3.9/doins.py", line 181, in run
    sstat = os.stat(source)
FileNotFoundError: [Errno 2] No such file or directory: b'gdb/ChangeLog'
 * ERROR: sys-devel/gdb-9999::loongson failed (install phase):
 *   dodoc failed
 * 
...skip...

It seems that gdb/ChangeLog, sim/ChangeLog, gdbserver/{ChangeLog,README} are missing while doing dodoc. In order to make it pass build phrase, I have to do the following dirty workaround:

--- /var/gentoo/repos/local/sys-devel/gdb/gdb-9999.ebuild   2021-12-22 22:20:25.560250629 +0800
+++ gdb-9999.ebuild 2022-01-20 22:29:05.949400491 +0800
@@ -224,12 +224,11 @@

    docinto gdb
    dodoc gdb/CONTRIBUTE gdb/README gdb/MAINTAINERS \
-       gdb/NEWS gdb/ChangeLog gdb/PROBLEMS
+       gdb/NEWS gdb/PROBLEMS
    docinto sim
-   dodoc sim/{ChangeLog,MAINTAINERS,README-HACKING}
+   dodoc sim/{MAINTAINERS,README-HACKING}
    if use server ; then
        docinto gdbserver
-       dodoc gdbserver/{ChangeLog,README}
    fi

    if [[ -n ${PATCH_VER} ]] ; then

Seems it works now, but still not sure what contributes to the missing of those doc files.

xen0n / loongson-overlay

Gdb failed to build due to missing doc file #8