diff --git a/.github/workflows/test-addon.yml b/.github/workflows/test-addon.yml
new file mode 100644
index 0000000..291c98b
--- /dev/null
+++ b/.github/workflows/test-addon.yml
@@ -0,0 +1,66 @@
+name: test-addon
+
+# Tests the addon against a tagged openFrameworks release (see OF_TAG below).
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+    inputs:
+      of_tag:
+        description: "openFrameworks tag to test against (blank = OF_TAG below)"
+
+env:
+  # TODO: change to test another OF version, e.g. nightly/master checkout
+  OF_TAG: ${{ inputs.of_tag || '0.12.1' }}
+  # TODO: rename to your addon (must match addon_config.mk ADDON_NAME)
+  ADDON_NAME: ofxMyAddon
+
+jobs:
+  linux64:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          path: addon
+      - name: Clone openFrameworks at tag
+        run: git clone --depth 1 --branch "$OF_TAG" https://github.com/openframeworks/openFrameworks ~/openFrameworks
+      - name: Install OF dependencies
+        run: |
+          cd ~/openFrameworks
+          sudo ./scripts/ci/linux64/install.sh
+          ./scripts/linux/download_libs.sh
+      - name: Install addon
+        run: |
+          mv "$GITHUB_WORKSPACE/addon" ~/openFrameworks/addons/$ADDON_NAME
+          cd ~/openFrameworks/addons/$ADDON_NAME
+          ./scripts/download_libs.sh linux64 || echo "no libs release yet, continuing with sources only"
+      - name: Build examples
+        run: |
+          export OF_ROOT=~/openFrameworks
+          for ex in ~/openFrameworks/addons/$ADDON_NAME/example_*; do
+            [ -d "$ex" ] || continue
+            echo "== building $ex"
+            make -C "$ex" -j"$(nproc)"
+          done
+
+  osx:
+    runs-on: macos-15
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          path: addon
+      - name: Clone openFrameworks at tag
+        run: git clone --depth 1 --branch "$OF_TAG" https://github.com/openframeworks/openFrameworks ~/openFrameworks
+      - name: Install addon
+        run: |
+          mv "$GITHUB_WORKSPACE/addon" ~/openFrameworks/addons/$ADDON_NAME
+          cd ~/openFrameworks/addons/$ADDON_NAME
+          ./scripts/download_libs.sh osx || echo "no libs release yet, continuing with sources only"
+      - name: Build examples
+        run: |
+          export OF_ROOT=~/openFrameworks
+          for ex in ~/openFrameworks/addons/$ADDON_NAME/example_*; do
+            [ -d "$ex" ] || continue
+            echo "== building $ex"
+            make -C "$ex" -j"$(sysctl -n hw.ncpu)"
+          done
diff --git a/.gitignore b/.gitignore
index 593962f..6308b5a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -105,3 +105,19 @@ Desktop.ini
 *.log
 *.sql
 *.sqlite
+
+#########################
+# addon prebuilt binaries
+#########################
+
+# Binaries are fetched with scripts/download_libs.sh, not committed.
+# (Folder skeleton is kept via .gitkeep files.)
+libs/*/lib/**/*.[ao]
+libs/*/lib/**/*.lib
+libs/*/lib/**/*.so
+libs/*/lib/**/*.dylib
+libs/*/lib/**/*.dll
+libs/*/lib/**/*.framework
+libs/*/lib/**/*.xcframework
+*.tar.bz2
+/releases/
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..975a6fc
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,92 @@
+# CMakeLists.txt - TEMPLATE for building an openFrameworks addon + example with CMake.
+#
+# Usage:
+#   cmake -S . -B build -DOF_ROOT=/path/to/openFrameworks -DOF_TARGET=linux64
+#   cmake --build build
+#
+# OF_TARGET must be one of the projectGenerator platform tokens, matching a
+# folder under libs/<lib>/lib/ (see addon_config.mk sections):
+#   osx | ios | tvos | vs | msys2 | linux64 | linuxarmv6l | linuxarmv7l |
+#   linuxaarch64 | android | emscripten
+#
+cmake_minimum_required(VERSION 3.16)
+
+# TODO: rename to your addon (must match addon_config.mk ADDON_NAME)
+set(ADDON_NAME ofxMyAddon)
+project(${ADDON_NAME} LANGUAGES C CXX)
+
+set(OF_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../.." CACHE PATH "openFrameworks root")
+set(OF_TARGET "linux64" CACHE STRING "OF platform token (see above)")
+
+# Same language standards as apothecary (scripts/apothecary/apothecary/apothecary):
+# C 17, C++ 23, honoring apothecary's C_STANDARD / CPP_STANDARD env overrides.
+if("$ENV{C_STANDARD}" STREQUAL "")
+    set(C_STANDARD 17)
+else()
+    set(C_STANDARD "$ENV{C_STANDARD}")
+endif()
+if("$ENV{CPP_STANDARD}" STREQUAL "")
+    set(CPP_STANDARD 23)
+else()
+    set(CPP_STANDARD "$ENV{CPP_STANDARD}")
+endif()
+set(CMAKE_C_STANDARD ${C_STANDARD})
+set(CMAKE_C_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_STANDARD ${CPP_STANDARD})
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# --- addon sources: mirrors what PG auto-discovers (src/ + libs/*/src|include).
+# PG walks both trees recursively, so this recurses too: sources nested at any
+# depth (e.g. libs/<lib>/src/vendor/sub/file.cpp) are picked up. Binaries under
+# libs/*/lib/ are ignored by extension. To drop files per-platform, prune the
+# lists (the equivalent of addon_config.mk ADDON_SOURCES_EXCLUDE), e.g.:
+#   list(FILTER ADDON_SOURCES EXCLUDE REGEX ".*port/AndroidJNI.*")
+file(GLOB_RECURSE ADDON_SOURCES CONFIGURE_DEPENDS
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/*.c"
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp"
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cc"
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cxx"
+    "${CMAKE_CURRENT_SOURCE_DIR}/libs/*.c"
+    "${CMAKE_CURRENT_SOURCE_DIR}/libs/*.cpp"
+    "${CMAKE_CURRENT_SOURCE_DIR}/libs/*.cc"
+    "${CMAKE_CURRENT_SOURCE_DIR}/libs/*.cxx")
+file(GLOB_RECURSE ADDON_HEADERS CONFIGURE_DEPENDS
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/*.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/*.hpp"
+    "${CMAKE_CURRENT_SOURCE_DIR}/libs/*.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/libs/*.hpp")
+
+add_library(${ADDON_NAME} STATIC ${ADDON_SOURCES} ${ADDON_HEADERS})
+target_include_directories(${ADDON_NAME} PUBLIC
+    "${CMAKE_CURRENT_SOURCE_DIR}/src")
+
+# Every lib folder becomes an include path, like the PG does.
+file(GLOB LIB_INCLUDE_DIRS LIST_DIRECTORIES true "${CMAKE_CURRENT_SOURCE_DIR}/libs/*")
+foreach(d IN LISTS LIB_INCLUDE_DIRS)
+    if(IS_DIRECTORY "${d}")
+        target_include_directories(${ADDON_NAME} PUBLIC "${d}/include" "${d}/src")
+    endif()
+endforeach()
+
+# --- prebuilt binaries for this platform (download with scripts/download_libs.sh)
+set(OF_LIB_DIR "${CMAKE_CURRENT_SOURCE_DIR}/libs")
+file(GLOB PREBUILT_LIBS
+    "${OF_LIB_DIR}/*/lib/${OF_TARGET}/*.a"
+    "${OF_LIB_DIR}/*/lib/${OF_TARGET}/*.so"
+    "${OF_LIB_DIR}/*/lib/${OF_TARGET}/*.dylib"
+    "${OF_LIB_DIR}/*/lib/${OF_TARGET}/*.lib")
+if(APPLE)
+    # PG treats osx/macos as aliases; accept either folder.
+    file(GLOB PREBUILT_LIBS_MACOS "${OF_LIB_DIR}/*/lib/macos/*")
+    list(APPEND PREBUILT_LIBS ${PREBUILT_LIBS_MACOS})
+endif()
+if(PREBUILT_LIBS)
+    target_link_libraries(${ADDON_NAME} PUBLIC ${PREBUILT_LIBS})
+else()
+    message(WARNING "No prebuilt libs for OF_TARGET=${OF_TARGET}; run scripts/download_libs.sh ${OF_TARGET}")
+endif()
+
+# --- OF core headers (compile against a tagged OF checkout, e.g. 0.12.1)
+if(IS_DIRECTORY "${OF_ROOT}/libs/openFrameworks")
+    target_include_directories(${ADDON_NAME} PUBLIC "${OF_ROOT}/libs/openFrameworks")
+endif()
diff --git a/README_DEPLOY.md b/README_DEPLOY.md
index 3c52a1f..dbda10e 100644
--- a/README_DEPLOY.md
+++ b/README_DEPLOY.md
@@ -15,7 +15,16 @@ State which license you offer your addon under. openFrameworks is distributed un
 
 Installation
 ------------
-Any steps necessary to install your addon. Optimally, this means just dropping the folder into the `openFrameworks/addons/` folder.
+Drop the folder into the `openFrameworks/addons/` folder, then fetch the
+prebuilt binaries for your platform:
+
+    ./scripts/download_libs.sh            # auto-detects: osx, linux64, msys2, ...
+    ./scripts/download_libs.sh ios        # a specific platform, or `all`
+
+(On Windows run it from git-bash, or use `scripts\download_libs.cmd`.)
+If your platform has no prebuilt release yet, the addon still builds from the
+sources under `libs/*/src/` - see `scripts/build_libs.sh` to build and publish
+binaries.
 
 Dependencies
 ------------
diff --git a/addon_config.mk b/addon_config.mk
index 1a0a893..f1461bc 100644
--- a/addon_config.mk
+++ b/addon_config.mk
@@ -94,9 +94,15 @@ vs:
 	
 linuxarmv6l:
 linuxarmv7l:
-android/armeabi:	
-android/armeabi-v7a:	
+linuxaarch64:
+msys2:
+emscripten:
+android/armeabi-v7a:
+android/arm64-v8a:
+android/x86:
+android/x86_64:
 osx:
+macos:
 	# osx/iOS only, any framework that should be included in the project
 	# ADDON_FRAMEWORKS =
 ios:
diff --git a/libs/README.md b/libs/README.md
new file mode 100644
index 0000000..588dec5
--- /dev/null
+++ b/libs/README.md
@@ -0,0 +1,28 @@
+# libs/
+
+Prebuilt binaries live here, one folder per openFrameworks platform token:
+
+    libs/<lib>/lib/osx/            macOS (also matches the `macos` alias)
+    libs/<lib>/lib/ios/            iOS
+    libs/<lib>/lib/tvos/           tvOS
+    libs/<lib>/lib/vs/             Windows Visual Studio (.lib)
+    libs/<lib>/lib/msys2/          Windows MSYS2/MinGW
+    libs/<lib>/lib/linux64/        Linux x86_64
+    libs/<lib>/lib/linuxarmv6l/    Linux ARMv6 (Raspberry Pi 1/Zero)
+    libs/<lib>/lib/linuxarmv7l/    Linux ARMv7 (Raspberry Pi 2/3)
+    libs/<lib>/lib/linuxaarch64/   Linux ARM64
+    libs/<lib>/lib/android/<abi>/  armeabi-v7a, arm64-v8a, x86, x86_64
+    libs/<lib>/lib/emscripten/     Emscripten (WebAssembly)
+
+The names are load-bearing: the projectGenerator links a binary only if its
+path contains the platform token, and `scripts/download_libs.sh` resolves the
+same names to GitHub release assets.
+
+Binaries are NOT committed (see `.gitignore`). Fetch them with:
+
+    ./scripts/download_libs.sh            # auto-detect host platform
+    ./scripts/download_libs.sh linux64    # or: all, osx, ios, vs, ...
+
+Sources under `libs/<lib>/src/` and headers under `libs/<lib>/include/` are
+compiled automatically by the projectGenerator and the CMakeLists template -
+no `addon_config.mk` entries needed.
diff --git a/libs/necessaryLib/lib/android/armeabi-v7a/static_necessaryLib1.a b/libs/necessaryLib/lib/android/arm64-v8a/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/android/armeabi-v7a/static_necessaryLib1.a
rename to libs/necessaryLib/lib/android/arm64-v8a/.gitkeep
diff --git a/libs/necessaryLib/lib/android/armeabi-v7a/static_necessaryLib2.a b/libs/necessaryLib/lib/android/armeabi-v7a/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/android/armeabi-v7a/static_necessaryLib2.a
rename to libs/necessaryLib/lib/android/armeabi-v7a/.gitkeep
diff --git a/libs/necessaryLib/lib/android/armeabi/static_necessaryLib1.a b/libs/necessaryLib/lib/android/x86/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/android/armeabi/static_necessaryLib1.a
rename to libs/necessaryLib/lib/android/x86/.gitkeep
diff --git a/libs/necessaryLib/lib/android/armeabi/static_necessaryLib2.a b/libs/necessaryLib/lib/android/x86_64/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/android/armeabi/static_necessaryLib2.a
rename to libs/necessaryLib/lib/android/x86_64/.gitkeep
diff --git a/libs/necessaryLib/lib/ios/static_necessaryLib1.a b/libs/necessaryLib/lib/emscripten/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/ios/static_necessaryLib1.a
rename to libs/necessaryLib/lib/emscripten/.gitkeep
diff --git a/libs/necessaryLib/lib/ios/static_necessaryLib2.a b/libs/necessaryLib/lib/ios/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/ios/static_necessaryLib2.a
rename to libs/necessaryLib/lib/ios/.gitkeep
diff --git a/libs/necessaryLib/lib/linux/static_necessaryLib1.a b/libs/necessaryLib/lib/linux64/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/linux/static_necessaryLib1.a
rename to libs/necessaryLib/lib/linux64/.gitkeep
diff --git a/libs/necessaryLib/lib/linux/static_necessaryLib2.a b/libs/necessaryLib/lib/linuxaarch64/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/linux/static_necessaryLib2.a
rename to libs/necessaryLib/lib/linuxaarch64/.gitkeep
diff --git a/libs/necessaryLib/lib/linux64/static_necessaryLib1.a b/libs/necessaryLib/lib/linuxarmv6l/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/linux64/static_necessaryLib1.a
rename to libs/necessaryLib/lib/linuxarmv6l/.gitkeep
diff --git a/libs/necessaryLib/lib/linux64/static_necessaryLib2.a b/libs/necessaryLib/lib/linuxarmv7l/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/linux64/static_necessaryLib2.a
rename to libs/necessaryLib/lib/linuxarmv7l/.gitkeep
diff --git a/libs/necessaryLib/lib/osx/static_necessaryLib1.a b/libs/necessaryLib/lib/msys2/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/osx/static_necessaryLib1.a
rename to libs/necessaryLib/lib/msys2/.gitkeep
diff --git a/libs/necessaryLib/lib/osx/static_necessaryLib2.a b/libs/necessaryLib/lib/osx/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/osx/static_necessaryLib2.a
rename to libs/necessaryLib/lib/osx/.gitkeep
diff --git a/libs/necessaryLib/lib/vs/static_necessaryLib1.lib b/libs/necessaryLib/lib/tvos/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/vs/static_necessaryLib1.lib
rename to libs/necessaryLib/lib/tvos/.gitkeep
diff --git a/libs/necessaryLib/lib/vs/static_necessaryLib2.lib b/libs/necessaryLib/lib/vs/.gitkeep
similarity index 100%
rename from libs/necessaryLib/lib/vs/static_necessaryLib2.lib
rename to libs/necessaryLib/lib/vs/.gitkeep
diff --git a/libs/necessaryLib/lib/win_cb/static_necessaryLib1.a b/libs/necessaryLib/lib/win_cb/static_necessaryLib1.a
deleted file mode 100644
index e69de29..0000000
diff --git a/libs/necessaryLib/lib/win_cb/static_necessaryLib2.a b/libs/necessaryLib/lib/win_cb/static_necessaryLib2.a
deleted file mode 100644
index e69de29..0000000
diff --git a/scripts/build_libs.sh b/scripts/build_libs.sh
new file mode 100755
index 0000000..aad6012
--- /dev/null
+++ b/scripts/build_libs.sh
@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+#
+# build_libs.sh - TEMPLATE for building addon libs and packaging them as
+# GitHub release assets with the naming convention expected by
+# scripts/download_libs.sh:
+#
+#   <addon-name>-libs-<platform>-<libs-version>.tar.bz2
+#
+# Usage:
+#   scripts/build_libs.sh [platform] [-v <libs-version>]
+#   scripts/build_libs.sh --upload [platform] [-v <libs-version>]  (needs `gh`)
+#
+# Steps for the addon author:
+#   1. Set LIB_NAME / LIB_SRC / BUILD_CMDS below to build your lib.
+#   2. Run this on each platform (or in CI), producing one archive per platform.
+#   3. Create a GitHub release named <libs-version> and upload the archives:
+#        gh release create 1.0.0 releases/*.tar.bz2
+#   4. Point scripts/download_libs.sh at your repo (GITHUB_REPO) and version.
+#
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ADDON_DIR="$(dirname "$SCRIPT_DIR")"
+ADDON_NAME="$(basename "$ADDON_DIR")"
+
+# ---------------------------------------------------------------- TODO: edit
+LIB_NAME="necessaryLib"   # folder under libs/ holding include/ src/ lib/
+LIBS_VERSION="1.0.0"      # GitHub release tag the archives are uploaded to
+RELEASE_DIR="$ADDON_DIR/releases"
+# ----------------------------------------------------------------------------
+
+PLATFORM=""
+UPLOAD=0
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -v|--version) LIBS_VERSION="$2"; shift 2 ;;
+        --upload) UPLOAD=1; shift ;;
+        -h|--help) sed -n '2,/^$/p' "$0"; exit 0 ;;
+        *) PLATFORM="$1"; shift ;;
+    esac
+done
+
+if [ -z "$PLATFORM" ]; then
+    # Same detection as download_libs.sh
+    case "$(uname -s)" in
+        Darwin) PLATFORM="osx" ;;
+        MINGW*|MSYS*|CYGWIN*) PLATFORM="msys2" ;;
+        Linux)
+            case "$(uname -m)" in
+                x86_64) PLATFORM="linux64" ;;
+                armv6l) PLATFORM="linuxarmv6l" ;;
+                armv7l) PLATFORM="linuxarmv7l" ;;
+                aarch64) PLATFORM="linuxaarch64" ;;
+                *) PLATFORM="linux64" ;;
+            esac ;;
+        *) PLATFORM="linux64" ;;
+    esac
+fi
+if [ "$PLATFORM" = "macos" ]; then PLATFORM="osx"; fi
+
+LIB_DIR="$ADDON_DIR/libs/$LIB_NAME"
+OUT_DIR="$LIB_DIR/lib/$PLATFORM"
+
+echo "==> TODO: build your lib here and install the binaries into:"
+echo "    $OUT_DIR"
+echo "    (edit the BUILD section of $0)"
+# Example: build from libs/$LIB_NAME/src with cmake/make, then copy:
+#   cmake -S "$LIB_DIR/src" -B "/tmp/${LIB_NAME}-build" -DCMAKE_BUILD_TYPE=Release
+#   cmake --build "/tmp/${LIB_NAME}-build" --config Release
+#   mkdir -p "$OUT_DIR"
+#   cp "/tmp/${LIB_NAME}-build/libnecessaryLib.a" "$OUT_DIR/"
+
+if [ ! -d "$OUT_DIR" ]; then
+    echo "ERROR: $OUT_DIR does not exist. Build the lib for $PLATFORM first." >&2
+    exit 1
+fi
+
+ASSET="${ADDON_NAME}-libs-${PLATFORM}-${LIBS_VERSION}.tar.bz2"
+mkdir -p "$RELEASE_DIR"
+# Archive paths relative to libs/$LIB_NAME so they extract to lib/<platform>/...
+tar -cjf "$RELEASE_DIR/$ASSET" -C "$LIB_DIR" "lib/$PLATFORM" "include"
+echo "==> wrote $RELEASE_DIR/$ASSET"
+tar -tjf "$RELEASE_DIR/$ASSET" | head -n 20
+
+if [ "$UPLOAD" = "1" ]; then
+    gh release upload "$LIBS_VERSION" "$RELEASE_DIR/$ASSET" --clobber
+fi
+
+echo "Upload all platform archives with:"
+echo "  gh release create $LIBS_VERSION $RELEASE_DIR/*.tar.bz2"
diff --git a/scripts/download_libs.cmd b/scripts/download_libs.cmd
new file mode 100644
index 0000000..2df359a
--- /dev/null
+++ b/scripts/download_libs.cmd
@@ -0,0 +1,18 @@
+@echo off
+REM download_libs.cmd - Windows shim: VS uses the bash script via git-bash.
+REM Requires git-bash (ships with Git for Windows). Usage:
+REM   scripts\download_libs.cmd [platform] [-v <libs-version>] [-u <user/repo>]
+REM With no arguments it downloads the `vs` libs (a bare run under git-bash
+REM would otherwise auto-detect `msys2`).
+setlocal
+where bash >nul 2>&1
+if errorlevel 1 (
+    echo bash not found. Install Git for Windows and run this from git-bash:
+    echo   ./scripts/download_libs.sh vs
+    exit /b 1
+)
+if "%~1"=="" (
+    bash "%~dp0download_libs.sh" vs
+) else (
+    bash "%~dp0download_libs.sh" %*
+)
diff --git a/scripts/download_libs.sh b/scripts/download_libs.sh
new file mode 100755
index 0000000..dca866e
--- /dev/null
+++ b/scripts/download_libs.sh
@@ -0,0 +1,111 @@
+#!/usr/bin/env bash
+#
+# download_libs.sh - download prebuilt addon binaries from GitHub releases.
+#
+# Usage:
+#   scripts/download_libs.sh [platform] [-v <libs-version>] [-u <github-user/repo>]
+#
+#   platform: osx | macos | ios | tvos | vs | msys2 | linux64 |
+#             linuxarmv6l | linuxarmv7l | linuxaarch64 |
+#             android | emscripten | all
+#             (default: auto-detected from the host machine)
+#
+# The platform names MUST match the folder names under libs/<lib>/lib/,
+# because the projectGenerator links a binary only if its path contains
+# the platform token (see ofAddon::getLibsRecursively).
+#
+# Release asset naming convention (created with scripts/build_libs.sh):
+#   <addon-name>-libs-<platform>-<libs-version>.tar.bz2
+# e.g. ofxMyAddon-libs-osx-1.0.0.tar.bz2
+# Each archive unpacks to libs/<lib>/lib/<platform>/...
+#
+# On Windows run this from git-bash (ships with Git for Windows).
+#
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ADDON_DIR="$(dirname "$SCRIPT_DIR")"
+ADDON_NAME="$(basename "$ADDON_DIR")"
+
+# ---------------------------------------------------------------- TODO: edit
+# GitHub repo hosting the releases, and the libs version to download.
+# (Flag names mirror OF's scripts/dev/download_libs.sh: -v/--version.)
+# Override from the command line with -u / -v, or via a scripts/libs_version.txt file.
+GITHUB_REPO="yournamehere/${ADDON_NAME}"
+LIBS_VERSION="1.0.0"
+# Name of the lib folder under libs/ (must contain lib/<platform>/...).
+LIB_NAME="necessaryLib"
+# ----------------------------------------------------------------------------
+
+if [ -f "$SCRIPT_DIR/libs_version.txt" ]; then
+    LIBS_VERSION="$(tr -d ' \t\r\n' < "$SCRIPT_DIR/libs_version.txt")"
+fi
+
+PLATFORM=""
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -v|--version) LIBS_VERSION="$2"; shift 2 ;;
+        -u|--repo)    GITHUB_REPO="$2"; shift 2 ;;
+        -h|--help)
+            sed -n '2,/^$/p' "$0"; echo "Usage: $0 [platform] [-v <libs-version>] [-u <user/repo>]"
+            exit 0 ;;
+        *) PLATFORM="$1"; shift ;;
+    esac
+done
+
+detect_platform() {
+    local os arch
+    os="$(uname -s)"
+    arch="$(uname -m)"
+    case "$os" in
+        Darwin) echo "osx" ;;
+        MINGW*|MSYS*|CYGWIN*) echo "msys2" ;;
+        Linux)
+            case "$arch" in
+                x86_64) echo "linux64" ;;
+                armv6l) echo "linuxarmv6l" ;;
+                armv7l) echo "linuxarmv7l" ;;
+                aarch64) echo "linuxaarch64" ;;
+                *) echo "linux64" ;;
+            esac ;;
+        *) echo "linux64" ;;
+    esac
+}
+
+if [ -z "$PLATFORM" ]; then
+    PLATFORM="$(detect_platform)"
+fi
+
+ALL_PLATFORMS="osx ios tvos vs msys2 linux64 linuxarmv6l linuxarmv7l linuxaarch64 android emscripten"
+if [ "$PLATFORM" = "macos" ]; then
+    PLATFORM="osx" # PG treats them as aliases; releases use "osx"
+fi
+
+download_one() {
+    local platform="$1"
+    local asset="${ADDON_NAME}-libs-${platform}-${LIBS_VERSION}.tar.bz2"
+    local url="https://github.com/${GITHUB_REPO}/releases/download/${LIBS_VERSION}/${asset}"
+    echo "==> ${platform}: downloading ${url}"
+    mkdir -p "$ADDON_DIR/libs/$LIB_NAME"
+    if command -v curl >/dev/null 2>&1; then
+        curl -fL -o "/tmp/${asset}" "$url"
+    else
+        wget -O "/tmp/${asset}" "$url"
+    fi
+    tar -xjf "/tmp/${asset}" -C "$ADDON_DIR/libs/$LIB_NAME"
+    rm -f "/tmp/${asset}"
+    if [ ! -d "$ADDON_DIR/libs/$LIB_NAME/lib/$platform" ] && [ "$platform" != "android" ]; then
+        echo "WARNING: archive did not contain libs/$LIB_NAME/lib/$platform/" >&2
+    fi
+    echo "==> ${platform}: done"
+}
+
+if [ "$PLATFORM" = "all" ]; then
+    for p in $ALL_PLATFORMS; do
+        download_one "$p"
+    done
+else
+    download_one "$PLATFORM"
+fi
+
+echo "Libs ${LIBS_VERSION} installed for: ${PLATFORM}"
diff --git a/scripts/libs_version.txt b/scripts/libs_version.txt
new file mode 100644
index 0000000..3eefcb9
--- /dev/null
+++ b/scripts/libs_version.txt
@@ -0,0 +1 @@
+1.0.0