nhlt-dmic-info.c: error: unknown type name 'u_int8_t' - compiling alsa-utils 1.2.10 with musl

[michaelopdenacker]

I'm facing the below issue trying to compile alsa-utils with the musl C library with the Yocto Project Poky master branch:

| x86_64-poky-linux-musl-gcc -m64 -march=core2 -mtune=core2 -msse3 -mfpmath=sse -fstack-protector-strong -O2 -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security --sysroot=/home/mike/work/yocto/poky/build/tmp/work/core2-64-poky-linux-musl/alsa-utils/1.2.10/recipe-sysroot -DHAVE_CONFIG_H -I. -I../../alsa-utils-1.2.10/nhlt -I../include -I../../alsa-utils-1.2.10/include -O2 -pipe -g -feliminate-unused-debug-types -fcanon-prefix-map -fmacro-prefix-map=/home/mike/work/yocto/poky/build/tmp/work/core2-64-poky-linux-musl/alsa-utils/1.2.10/alsa-utils-1.2.10=/usr/src/debug/alsa-utils/1.2.10-r0 -fdebug-prefix-map=/home/mike/work/yocto/poky/build/tmp/work/core2-64-poky-linux-musl/alsa-utils/1.2.10/alsa-utils-1.2.10=/usr/src/debug/alsa-utils/1.2.10-r0 -fmacro-prefix-map=/home/mike/work/yocto/poky/build/tmp/work/core2-64-poky-linux-musl/alsa-utils/1.2.10/build=/usr/src/debug/alsa-utils/1.2.10-r0 -fdebug-prefix-map=/home/mike/work/yocto/poky/build/tmp/work/core2-64-poky-linux-musl/alsa-utils/1.2.10/build=/usr/src/debug/alsa-utils/1.2.10-r0 -fdebug-prefix-map=/home/mike/work/yocto/poky/build/tmp/work/core2-64-poky-linux-musl/alsa-utils/1.2.10/recipe-sysroot= -fmacro-prefix-map=/home/mike/work/yocto/poky/build/tmp/work/core2-64-poky-linux-musl/alsa-utils/1.2.10/recipe-sysroot= -fdebug-prefix-map=/home/mike/work/yocto/poky/build/tmp/work/core2-64-poky-linux-musl/alsa-utils/1.2.10/recipe-sysroot-native= -c -o nhlt-dmic-info.o ../../alsa-utils-1.2.10/nhlt/nhlt-dmic-info.c
| ../../alsa-utils-1.2.10/nhlt/nhlt-dmic-info.c:48:36: error: unknown type name 'u_int8_t'; did you mean 'uint8_t'?
| 48 | static const char *microphone_type(u_int8_t type)
| | ^~~~~~~~
| | uint8_t.
...

Including <sys/types.h> from nhlt/nhlt-dmic-info.c solves this issue.
I'll send a patch shortly.

[michaelopdenacker]

Fix proposed by e-mail:
https://lore.kernel.org/alsa-devel/20230919111430.2912326-2-michael.opdenacker@bootlin.com/T/#m790deb46ddb9df904656cc733d2a5892ccc7fdb8