doc: update building instructions

- remove unnecessary LUA requirements already provided by the build system
- clarify necessary vs optional requirements
- simplify macOS instructions around the minimum targeted deployment version

doc/Building.md

@@ -14,9 +14,7 @@ You can skip most of the following instructions if desired, and use our premade
 To get and compile the source you must have:
 - `autoconf`: version greater than 2.64
 - `bash`: version 4.0 or greater
-- `ccache`: optional, but recommended
 - `cmake`: version 3.17.5 or greater
-- `gettext`
 - `gcc/g++` or `clang/clang++`: with C11 & C++17 support
 - `git`
 - `make`: version 4.1 or greater
@@ -29,33 +27,45 @@ To get and compile the source you must have:
 - `unzip`
 - `wget`
 
-For testing:
-- `busted`
-- `lua`: version 5.1
-- `luarocks`
+For running the emulator / tests:
 - `SDL2`
 
+Optional:
+- `7z`: for packing releases
+- `ccache`: recommended for faster recompilation times
+- `gettext`: for updating translations
+- `luacheck`: for linting the codebase with `./kodev check`
+
 ### Alpine Linux
 
 Install the prerequisites using apk:
 
 ```
 sudo apk add autoconf automake bash cmake coreutils curl diffutils \
-    findutils g++ gcc gettext-dev git grep gzip libtool linux-headers \
-    lua5.1-busted luarocks5.1 make meson nasm ninja-build patch perl \
-    pkgconf procps-ng sdl2 tar unzip wget
+    findutils g++ gcc git grep gzip libtool linux-headers make meson \
+    nasm ninja-build patch perl pkgconf procps-ng sdl2 tar unzip wget
 ```
 
 **Note:** don't forget to add `/usr/lib/ninja-build/bin` to `$PATH`
 so the real ninja is used (and not the binary provided by samurai).
 
+Optional:
+```
+sudo apk add 7zip ccache gettext-dev luacheck
+```
+
 ### Arch Linux
 
 Install the prerequisites using pacman:
 
 ```
 run0 pacman -S base-devel ca-certificates cmake gcc-libs git \
-    lua51-busted luarocks meson nasm ninja perl sdl2 unzip wget
+    meson nasm ninja perl sdl2 unzip wget
+```
+
+Optional:
+```
+run0 pacman -S 7zip ccache luacheck
 ```
 
 ### Debian/Ubuntu
@@ -63,9 +73,9 @@ run0 pacman -S base-devel ca-certificates cmake gcc-libs git \
 Install the prerequisites using APT:
 
 ```
-sudo apt-get install autoconf automake build-essential ca-certificates cmake \
-    gcc-multilib gettext git libsdl2-2.0-0 libtool libtool-bin lua-busted \
-    lua5.1 luarocks meson nasm ninja-build patch perl pkg-config unzip wget
+sudo apt install autoconf automake build-essential ca-certificates cmake \
+    gcc-multilib git libsdl2-2.0-0 libtool libtool-bin meson nasm ninja-build \
+    patch perl pkg-config unzip wget
 ```
 
 **Note:** Debian distributions might need `meson` to be installed from `bookworm-backports`) because the version provided by the default repositories is too old:
@@ -75,19 +85,28 @@ sudo apt install meson/bookworm-backports
 The bookworm-backports repository was already included on Linux Mint Dedian Edition 6.
 Otherwise, follow full up-to-date instructions from here: https://wiki.debian.org/Backports.
 
+Optional:
+```
+sudo apt install ccache gettext lua-check p7zip-full
+```
+
 ### Fedora/Red Hat
 
 Install the prerequisites using DNF:
 
 ```
-sudo dnf install autoconf automake cmake gettext gcc gcc-c++ git libtool \
-    lua5.1 luarocks meson nasm ninja-build patch perl-FindBin procps-ng \
-    SDL2 unzip wget
+sudo dnf install autoconf automake cmake gcc gcc-c++ git libtool meson nasm \
+    ninja-build patch perl-FindBin procps-ng SDL2 unzip wget
 ```
 
-And for busted:
+Optional:
 ```
-luarocks --lua-version=5.1 --local install busted
+sudo dnf install ccache gettext p7zip
+```
+And for luacheck:
+```
+sudo dnf install lua-argparse lua-filesystem luarocks
+luarocks install luacheck
 ```
 
 ### macOS
@@ -96,7 +115,7 @@ Install the prerequisites using [Homebrew](https://brew.sh/):
 
 ```
 brew install autoconf automake bash binutils cmake coreutils findutils \
-    gnu-getopt libtool make meson nasm ninja p7zip pkg-config sdl2 util-linux
+    gnu-getopt libtool make meson nasm ninja pkg-config sdl2 util-linux
 ```
 
 You will also have to ensure Homebrew's findutils, gnu-getopt, make & util-linux are in your path, e.g., via
@@ -104,12 +123,15 @@ You will also have to ensure Homebrew's findutils, gnu-getopt, make & util-linux
 export PATH="$(brew --prefix)/opt/findutils/libexec/gnubin:$(brew --prefix)/opt/gnu-getopt/bin:$(brew --prefix)/opt/make/libexec/gnubin:$(brew --prefix)/opt/util-linux/bin:${PATH}"
 ```
 
-*Note:* With current XCode versions, you *will* need to set a minimum deployment version higher than `10.04`. Otherwise, you'll hit various linking errors related to missing unwinding libraries/symbols.
-On Mojave, `10.09` has been known to behave with XCode 10, And `10.14` with XCode 11. When in doubt, go with your current macOS version.
+Optional:
+```
+brew install ccache gettext luacheck p7zip
+```
+
+*Note:* You can override the default targeted minimum deployment version by setting `MACOSX_DEPLOYMENT_TARGET`:
 ```
 export MACOSX_DEPLOYMENT_TARGET=10.09
 ```
-*Note:* On Catalina (10.15), you will currently *NOT* want to deploy for `10.15`, as [XCode is currently broken in that configuration](https://forums.developer.apple.com/thread/121887)! (i.e., deploy for `10.14` instead).
 
 ## Getting the source