Package alsa was not found in the pkg-config search path.
Perhaps you should add the directory containing `alsa.pc'
to the PKG_CONFIG_PATH environment variable
Package 'alsa', required by 'virtual:world', not found
../../../scripts/Makefile.include:4: *** O=build_tools/ does not exist.  Stop.
Makefile:65: warning: overriding recipe for target 'emit_tests'
../lib.mk:111: warning: ignoring old recipe for target 'emit_tests'
Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs from latest version at 'include/uapi/linux/bpf.h'
Warning: Kernel ABI header at 'tools/include/uapi/linux/if_xdp.h' differs from latest version at 'include/uapi/linux/if_xdp.h'