gha: add build for macOS ARM and x86

Very barebones, doesn't build universal app, doesn't build dmg

.github/workflows/c-cpp.yml

@@ -43,6 +43,12 @@ jobs:
           - os: windows-2019 # always use the oldest possible for 32-bit because of older compilers, and better support of certain legacy OSes
             targetos: win32
             targetarch: i386
+          - os: macos-14 # in GitHub documentation, it's an ARM64 machine
+            targetos: apple
+            targetarch: arm64
+          - os: macos-12 # in GitHub documentation, it's an x86 machine
+            targetos: apple
+            targetarch: amd64
     env:
       SDL_VERSION: 2.30.3
       GH_CPU_ARCH: ${{ matrix.targetarch }}

scripts/gha/build_apple.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+. scripts/lib.sh
+
+cd $GITHUB_WORKSPACE || die
+
+pushd hlsdk || die
+./waf configure build install --destdir=../bin || die
+popd
+
+./waf configure --enable-utils --enable-tests --enable-lto build install --destdir=bin || die_configure
+
+mkdir -p artifacts/
+tar -cJvf artifacts/ash3d-fwgs-apple-$ARCH.tar.xz -C bin . # skip the bin directory from resulting tar archive

scripts/gha/deps_apple.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+cd $GITHUB_WORKSPACE
+
+wget http://libsdl.org/release/SDL2-$SDL_VERSION.dmg -O SDL2.dmg
+hdiutil mount SDL2.dmg
+sudo cp -vr /Volumes/SDL2/SDL2.framework /Library/Frameworks
+
+git clone https://github.com/FWGS/hlsdk-portable hlsdk --depth=1