How to build and run Half-Life 1 on M1 natively.

Half Life on Mac M1.sh

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## Guide to build and run half-life 1 on M1 processor
##

##
## This is not a script. 
## This may be not be accurate. 
## Execute all commands by yourself and only if you are understand their meaning.
##

## Put your home folder(or any other) to variable
BASEFOLDER=$PWD

## Install LLVM via brew
brew install llvm
export PATH="/usr/local/opt/llvm/bin:$PATH"

## Rename llvm-objcopy to objcopy.
## This step is required because some of the build scripts for the xash3d engine assume that objcopy is available.
cd /opt/homebrew/opt/llvm/bin
cp llvm-objcopy objcopy

## Go back, clone xash3d engine and build it to game folder
cd "$BASEFOLDER" || exit
mkdir game
git clone --recursive https://github.com/FWGS/xash3d-fwgs
cd xash3d-fwgs
./waf configure -T release
./waf build
./waf install --destdir="$BASEFOLDER"/game

## Go back to your folder
cd "$BASEFOLDER" || exit

## Build hlsdk
git clone --recursive https://github.com/FWGS/hlsdk-portable
cd hlsdk-portable
./waf configure -T release
./waf build
./waf install --destdir="$BASEFOLDER"/game

## Clone xash-extras repo and put all contents in your game folder
cd "$BASEFOLDER" || exit
git clone --recursive https://github.com/FWGS/xash-extras.git
cp -r xash-extras/* game/

cd "$BASEFOLDER" || exit

## Here move your Half-Life copy inside your game folder

cd game
./xash3d