Arch Linux - fatal error: stdint.h: No such file or directory

[JKelloggs]

Attempting to install on Steamdeck which some people have had success with, which I'm getting the below errors:

cc -I../module -std=gnu99 -fPIC -D_FILE_OFFSET_BITS=64 -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-protection -c -o evdi_lib.o evdi_lib.c
In file included from evdi_lib.c:5:
/usr/lib/gcc/x86_64-pc-linux-gnu/12.2.0/include/stdint.h:9:16: fatal error: stdint.h: No such file or directory
9 | # include_next <stdint.h>
| ^~~~~~~~~~
compilation terminated.
make: *** [: evdi_lib.o] Error 1
==> ERROR: A failure occurred in build().
Aborting...
-> error making: evdi