Post analysis result:
To safely examine the build process, I set up a Docker container running Ubuntu 22.04 and installed essential development tools (e.g., gcc, make, meson, ninja). I mounted the extracted source files into the container to avoid permission issues and ensure reproducibility.

Linux Kernel Attempt
I first attempted to build the linux_kernel.tgz package. Running make defconfig triggered an infinite loop printing:

*** Default configuration is based on target 'defconfig'

This behavior persisted even after explicitly setting ARCH=arm64 and CROSS_COMPILE=aarch64-linux-gnu-, and running make mrproper. This strongly suggests a misconfigured or broken Makefile, as no progress could be made with standard configuration commands.

PulseAudio Attempt
Next, I examined the pulseaudio.zip source. After installing meson and ninja, I ran:

meson setup build

The build failed early with:

meson.build:15:0: ERROR: Index 1 out of bounds of array of size 1.

This error points to a syntax or logic flaw in the meson.build script—likely referencing a version array that wasn’t populated as expected. Because this occurred before any actual compilation, it appears the package was not prepared for straightforward building.