config :: ffmpeg_init_audio header file conditional causes an undeclared failure

I have the dev 5.0.1-3.fc36 package for the header file installed: /usr/include/ffmpeg/libavutil/channel_layout.h

#define AV_CH_LAYOUT_MONO              (AV_CH_FRONT_CENTER)
#define AV_CH_LAYOUT_STEREO            (AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT)

... but it self-declares:

#ifndef AVUTIL_CHANNEL_LAYOUT_H
#define AVUTIL_CHANNEL_LAYOUT_H

Actual behavior

CC record/drivers/record_ffmpeg.c
CC cores/libretro-ffmpeg/ffmpeg_core.c
record/drivers/record_ffmpeg.c: In function ‘ffmpeg_init_audio’:
record/drivers/record_ffmpeg.c:307:9: error: ‘AV_CH_LAYOUT_STEREO’ undeclared (first use in this function)
  307 |       ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
      |         ^~~~~~~~~~~~~~~~~~~
record/drivers/record_ffmpeg.c:307:9: note: each undeclared identifier is reported only once for each function it appears in
record/drivers/record_ffmpeg.c:307:31: error: ‘AV_CH_LAYOUT_MONO’ undeclared (first use in this function)
  307 |       ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
      |                               ^~~~~~~~~~~~~~~~~
make: *** [Makefile:206: obj-unix/release/record/drivers/record_ffmpeg.o] Error 1

Using git version 14ab2db692 on Intel Linux (Fedora 36), if I remove the ifdef/endif compiler conditional, this works.
RetroArch/record/drivers/record_ffmpeg.c

#ifdef HAVE_AV_CHANNEL_LAYOUT
#include <libavutil/channel_layout.h>
#endif

Steps to reproduce the bug

RetroArch.spec.txt
rpmbuild -bb rpmbuild/SPECS/RetroArch.spec

Start in record/drivers/record_ffmpeg.c around ffmpeg_init_audio and the HAVE_AV_CHANNEL_LAYOUT conditional, then inspect the installed libavutil/channel_layout.h shown in the report. Reproduce the Fedora build with the linked RetroArch.spec.txt and rpmbuild command. Done means the affected build compiles without undeclared AV_CH_LAYOUT_STEREO or AV_CH_LAYOUT_MONO errors.