Add macOS SDL build script

misc/build-macos-sdl.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# This must be executed on macOS with xcode and cmake installed, obviously
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+. ${SCRIPT_DIR}/lib-versions.sh
+
+ROOT_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
+
+set -e
+
+TMPDIR=$(mktemp -d)
+cd "$TMPDIR"
+
+SDL_TARBALL="SDL2-${SDL_VERSION}.tar.gz"
+SDL_URL="https://github.com/libsdl-org/SDL/releases/download/release-${SDL_VERSION}/${SDL_TARBALL}"
+
+curl -sL "$SDL_URL"
+
+tar -xzf "$SDL_TARBALL"
+SDL_DIR="SDL2-${SDL_VERSION}"
+cd $TMPDIR/$SDL_DIR
+
+BUILD_DIR="build"
+cmake -S . -B ${BUILD_DIR} -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 -DCMAKE_OSX_ARCHITECTURES:STRING="x86_64;arm64"
+cmake --build ${BUILD_DIR} --parallel $(sysctl -n hw.ncpu)
+
+DEST_DIR="${ROOT_DIR}/code/libs/macos/"
+mkdir -p ${DEST_DIR}
+
+cp ${BUILD_DIR}/libSDL2-2.0.0.dylib ${DEST_DIR}
+cp ${BUILD_DIR}/libSDL2main.a ${DEST_DIR}
+install_name_tool -id @executable_path/libSDL2-2.0.0.dylib ${DEST_DIR}/libSDL2-2.0.0.dylib
+
+cd
+rm -rf "$TMPDIR"

misc/lib-versions.sh

@@ -0,0 +1 @@
+SDL_VERSION=2.32.8