diff --git a/.github/workflows/eepp-linux-build-check.yml b/.github/workflows/eepp-linux-build-check.yml
index 061a51850..4a56f136f 100644
--- a/.github/workflows/eepp-linux-build-check.yml
+++ b/.github/workflows/eepp-linux-build-check.yml
@@ -2,6 +2,9 @@ name: Linux
 
 on: [push, pull_request]
 
+permissions:
+  contents: write
+
 jobs:
   Linux:
     runs-on: ubuntu-24.04
@@ -27,6 +30,35 @@ jobs:
         ./premake5 --disable-static-build --with-debug-symbols gmake
         cd make/linux
         make all -j$(nproc) -e config=release_x86_64
+    - name: Set SDK version
+      id: sdk_version
+      run: |
+        if [[ "$GITHUB_REF" == refs/tags/eepp-* ]]; then
+          echo "version=${GITHUB_REF#refs/tags/}" >> "$GITHUB_OUTPUT"
+        else
+          echo "version=nightly" >> "$GITHUB_OUTPUT"
+        fi
+    - name: Package eepp SDK
+      if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+      run: |
+        bash projects/scripts/package_sdk.sh linux x86_64 --strip --version ${{ steps.sdk_version.outputs.version }}
+    - name: Upload SDK package
+      if: always()
+      uses: actions/upload-artifact@v4
+      with:
+        name: linux-eepp-sdk-x86_64
+        path: projects/linux/sdk/eepp-sdk-*.tar.gz
+    - name: Publish stable release package
+      if: startsWith(github.ref, 'refs/tags/eepp-')
+      uses: softprops/action-gh-release@v3
+      with:
+        tag_name: ${{ steps.sdk_version.outputs.version }}
+        draft: false
+        prerelease: false
+        generate_release_notes: false
+        fail_on_unmatched_files: true
+        files: |
+          projects/linux/sdk/eepp-sdk-linux-x86_64-*.tar.gz
     - name: Unit Tests
       run: |
         cd projects/scripts
diff --git a/.github/workflows/eepp-macos-build-check.yml b/.github/workflows/eepp-macos-build-check.yml
index 8fc72ae59..b00df8f36 100644
--- a/.github/workflows/eepp-macos-build-check.yml
+++ b/.github/workflows/eepp-macos-build-check.yml
@@ -2,6 +2,9 @@ name: macOS
 
 on: [push, pull_request]
 
+permissions:
+  contents: write
+
 jobs:
   MacOS:
     runs-on: macos-latest
@@ -21,6 +24,36 @@ jobs:
       run: |
         premake5 --disable-static-build --with-debug-symbols gmake
         make -C make/macosx/ -j$(sysctl -n hw.ncpu) -e config=release_arm64
+    - name: Set SDK version
+      id: sdk_version
+      run: |
+        if [[ "$GITHUB_REF" == refs/tags/eepp-* ]]; then
+          echo "version=${GITHUB_REF#refs/tags/}" >> "$GITHUB_OUTPUT"
+        else
+          echo "version=nightly" >> "$GITHUB_OUTPUT"
+        fi
+    - name: Package eepp SDK
+      if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+      run: |
+        bash projects/scripts/package_sdk.sh macos arm64 --version ${{ steps.sdk_version.outputs.version }}
+    - name: Upload SDK package
+      if: always()
+      uses: actions/upload-artifact@v4
+      with:
+        name: macos-eepp-sdk-arm64
+        path: projects/macos/sdk/eepp-sdk-*.tar.gz
+    - name: Publish stable release package
+      if: startsWith(github.ref, 'refs/tags/eepp-')
+      uses: softprops/action-gh-release@v3
+      with:
+        tag_name: ${{ steps.sdk_version.outputs.version }}
+        draft: false
+        prerelease: false
+        generate_release_notes: false
+        fail_on_unmatched_files: true
+        files: |
+          projects/macos/sdk/eepp-sdk-macos-arm64-*.tar.gz
+    - name: Unit Tests
     - name: Unit Tests
       run: |
         set +e
diff --git a/.github/workflows/eepp-mingw-nightly.yml b/.github/workflows/eepp-mingw-nightly.yml
new file mode 100644
index 000000000..0751b8541
--- /dev/null
+++ b/.github/workflows/eepp-mingw-nightly.yml
@@ -0,0 +1,65 @@
+name: Windows MinGW Nightly
+
+on:
+  push:
+    branches:
+      - 'develop'
+    tags:
+      - 'eepp-*'
+
+  workflow_dispatch:
+
+permissions: write-all
+
+jobs:
+  build_windows_mingw:
+    name: Windows x86_64 MinGW SDK
+    runs-on: ubuntu-24.04
+    steps:
+    - name: Configure Git
+      run: |
+        git config --global core.autocrlf false
+    - name: Checkout repository
+      uses: actions/checkout@v6
+      with:
+        ref: ${{ github.ref }}
+        fetch-depth: 2
+        submodules: 'recursive'
+    - name: Install dependencies
+      run: |
+        sudo add-apt-repository -y universe
+        sudo add-apt-repository -y multiverse
+        sudo apt update
+        sudo apt install -y mingw-w64 gcc-12 g++-12 zip wget
+        wget https://cdn.ensoft.dev/eepp-assets/premake-5.0.0-beta6-linux.tar.gz
+        tar xvzf premake-5.0.0-beta6-linux.tar.gz
+    - name: Set SDK version
+      id: sdk_version
+      run: |
+        if [[ "$GITHUB_REF" == refs/tags/eepp-* ]]; then
+          echo "version=${GITHUB_REF#refs/tags/}" >> "$GITHUB_OUTPUT"
+        else
+          echo "version=nightly" >> "$GITHUB_OUTPUT"
+        fi
+    - name: Build
+      run: |
+        bash projects/mingw32/make.sh -e config=release_x86_64 -j$(nproc)
+    - name: Package eepp SDK
+      run: |
+        bash projects/scripts/package_sdk.sh windows x86_64 --strip --version ${{ steps.sdk_version.outputs.version }}
+    - name: Upload SDK package
+      uses: actions/upload-artifact@v4
+      with:
+        name: windows-eepp-sdk-x86_64-mingw
+        path: projects/windows/sdk/eepp-sdk-*.zip
+    - name: Publish package
+      if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+      uses: softprops/action-gh-release@v3
+      with:
+        tag_name: ${{ steps.sdk_version.outputs.version }}
+        draft: false
+        prerelease: ${{ steps.sdk_version.outputs.version == 'nightly' }}
+        generate_release_notes: false
+        fail_on_unmatched_files: true
+        files: |
+          projects/windows/sdk/eepp-sdk-windows-x86_64-mingw-*.zip
diff --git a/.github/workflows/eepp-windows-build-check.yml b/.github/workflows/eepp-windows-build-check.yml
index 714aaec39..e873536d9 100644
--- a/.github/workflows/eepp-windows-build-check.yml
+++ b/.github/workflows/eepp-windows-build-check.yml
@@ -2,6 +2,9 @@ name: Windows
 
 on: [push, pull_request]
 
+permissions:
+  contents: write
+
 jobs:
   Windows:
     runs-on: windows-latest
@@ -33,6 +36,38 @@ jobs:
       shell: cmd
       run: |
         msbuild .\make\windows\eepp.sln -m /p:Platform="x64" /p:Configuration="release"
+    - name: Set SDK version
+      id: sdk_version
+      shell: powershell
+      run: |
+        if ($env:GITHUB_REF -like "refs/tags/eepp-*") {
+          $tag = $env:GITHUB_REF -replace "^refs/tags/", ""
+          Add-Content $env:GITHUB_OUTPUT "version=$tag"
+        } else {
+          Add-Content $env:GITHUB_OUTPUT "version=nightly"
+        }
+    - name: Package eepp SDK
+      if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+      shell: powershell
+      run: |
+        .\projects\scripts\package_sdk.ps1 -Platform msvc -Version ${{ steps.sdk_version.outputs.version }}
+    - name: Upload SDK package
+      if: always()
+      uses: actions/upload-artifact@v4
+      with:
+        name: windows-eepp-sdk-x86_64-msvc
+        path: projects\windows\sdk\eepp-sdk-*.zip
+    - name: Publish stable release package
+      if: startsWith(github.ref, 'refs/tags/eepp-')
+      uses: softprops/action-gh-release@v3
+      with:
+        tag_name: ${{ steps.sdk_version.outputs.version }}
+        draft: false
+        prerelease: false
+        generate_release_notes: false
+        fail_on_unmatched_files: true
+        files: |
+          projects\windows\sdk\eepp-sdk-windows-x86_64-msvc-*.zip
     - name: Install Mesa for software rendering
       uses: f3d-app/install-mesa-windows-action@v1
       with:
diff --git a/.gitignore b/.gitignore
index e7a8f5f41..e05a54a93 100644
--- a/.gitignore
+++ b/.gitignore
@@ -74,6 +74,9 @@ ecode.dmg
 /bin/unit_tests/eepp*
 /bin/unit_tests/lib*
 /bin/unit_tests/output/*
+/projects/linux/sdk/
+/projects/macos/sdk/
+/projects/windows/sdk/
 /projects/linux/ecode/polyfill-glibc
 /bin/crashes/*
 /bin/config/*
diff --git a/projects/scripts/eepp-sdk-README.md b/projects/scripts/eepp-sdk-README.md
new file mode 100644
index 000000000..d476490b2
--- /dev/null
+++ b/projects/scripts/eepp-sdk-README.md
@@ -0,0 +1,53 @@
+# eepp SDK
+
+Self-contained snapshot of the [eepp](https://github.com/SpartanJ/eepp) framework:
+runnable demos and tools, the assets they need, and the compiled libraries ready to be
+linked against by your own applications.
+
+Version: @SDK_VERSION@ ("nightly" is a rolling build of the latest development
+changes; eepp-%d.%d.%d versions are stable releases)
+
+## Package layout
+
+```
+bin/                    Tools and examples/demos (release builds)
+bin/assets/             Assets required by the shipped binaries
+bin/                    Runtime libraries co-located with the binaries
+libs/<platform>/<arch>/ Libraries for linking against eepp
+include/                Public C++ headers
+docs/articles/          Framework documentation articles
+```
+
+## Running the demos and tools
+
+Every binary in `bin/` is ready to run:
+
+- **Windows:** double-click any `.exe`.
+- **Linux:** run any binary from a file manager or a terminal, for example
+  `bin/ecode`. The binaries locate the shared libraries relative to their own
+  location (`$ORIGIN` rpath), so the package can live anywhere on disk.
+- **macOS:** the shipped binaries and libraries are ad-hoc signed and resolve
+  their dependencies through `@loader_path`, so they can be launched straight
+  from Finder or a terminal.
+
+If the SDL2/SDL3 runtime library was not bundled next to the binaries (see
+`bin/`), install it with your system package manager (for example
+`libsdl2-2.0-0` on Debian/Ubuntu).
+
+## Linking against eepp
+
+Add `include/` to your include path and link against the libraries in
+`libs/<platform>/<arch>/`:
+
+- Dynamic linking: link against the shared library (`eepp.dll` / `libeepp.so` /
+  `libeepp.dylib` and the matching import library when applicable).
+- The optional modules (`eepp-maps`, `eepp-physics`) and the `eterm` /
+  `languages-syntax-highlighting` static libraries are also provided.
+
+Start with the documentation in `docs/articles/` and the sources of the shipped
+examples (available in the repository under `src/examples/`) to learn the API.
+
+## Notes
+
+- These are unstable nightly builds; APIs may change at any time.
+- Report issues at https://github.com/SpartanJ/eepp/issues
diff --git a/projects/scripts/package_sdk.ps1 b/projects/scripts/package_sdk.ps1
new file mode 100644
index 000000000..47fdb3c56
--- /dev/null
+++ b/projects/scripts/package_sdk.ps1
@@ -0,0 +1,163 @@
+# Packages the eepp SDK for Windows (MSVC and MinGW).
+#
+# Usage: package_sdk.ps1 [-Platform <msvc|mingw>] [-Version <version>]
+#
+# -Version accepts "nightly" (default) or a stable release tag of the form
+# eepp-%d.%d.%d (the tag prefix is stripped from the package names).
+#
+# Expects the release build to be present in bin\ and libs\windows\x86_64
+# (see the CI workflows). Produces projects\windows\sdk\eepp-sdk-windows-x86_64-<platform>-<version>.zip.
+#
+# Package layout mirrors the repository root:
+#   bin\assets + binaries, bin\ runtime DLLs, libs\windows\x86_64\,
+#   include\ and docs\articles\.
+
+param(
+	[string]$Platform = "msvc",
+	[string]$Version = "nightly"
+)
+
+$ErrorActionPreference = "Stop"
+
+$RepoRoot = (Resolve-Path "$PSScriptRoot\..\..").Path
+Push-Location $RepoRoot
+
+try {
+	$Arch = "x86_64"
+	$SdkDirName = "eepp-sdk"
+
+	# Stable release tags use the eepp-%d.%d.%d format; strip the tag prefix
+	# for the package names. Anything else must be "nightly".
+	if ($Version -eq "nightly") {
+		$ArchiveSuffix = "nightly"
+	} elseif ($Version -match "^eepp-\d+\.\d+\.\d+$") {
+		$ArchiveSuffix = $Version.Substring("eepp-".Length)
+	} else {
+		throw "Invalid version '$Version' (expected nightly or eepp-%d.%d.%d)"
+	}
+	$Staging = "projects\windows\sdk\$SdkDirName"
+
+	if (Test-Path "projects\windows\sdk") {
+		Remove-Item -Recurse -Force "projects\windows\sdk"
+	}
+	New-Item -ItemType Directory -Force -Path "$Staging\bin", "$Staging\libs\windows\$Arch", "$Staging\docs" | Out-Null
+
+	# -----------------------------------------------------------------------
+	# Assets: everything except the unit-test / benchmark-only directories.
+	# -----------------------------------------------------------------------
+
+	$TestOnlyAssetDirs = @("html", "logo", "textfiles", "textformat")
+	$TestOnlyAssetFiles = @("test.zip")
+
+	New-Item -ItemType Directory -Force -Path "$Staging\bin\assets" | Out-Null
+
+	Get-ChildItem "bin\assets" | ForEach-Object {
+		if ($TestOnlyAssetDirs -notcontains $_.Name -and $TestOnlyAssetFiles -notcontains $_.Name) {
+			Copy-Item -Recurse -Path $_.FullName -Destination "$Staging\bin\assets\$($_.Name)"
+		}
+	}
+
+	# -----------------------------------------------------------------------
+	# Binaries: every release executable in bin\ is packaged (any new
+	# "eepp-*" binary is picked up automatically) plus the fixed tool set:
+	# ecode, eterm and eeiv. Unit tests live in bin\unit_tests and benchmarks
+	# in bin\benchmarks; they are never matched by this filter.
+	# -----------------------------------------------------------------------
+
+	function Add-Binary {
+		param([string]$Name)
+
+		$Source = "bin\$Name"
+		if (-not (Test-Path $Source)) {
+			Write-Warning "Binary not found, skipping: $Source"
+			return
+		}
+
+		Copy-Item -Path $Source -Destination "$Staging\bin\$Name"
+	}
+
+	$Binaries = @(Get-ChildItem "bin" -File | Where-Object { $_.Name -like "eepp-*" } | Select-Object -ExpandProperty Name)
+	foreach ($Name in $Binaries) {
+		Add-Binary -Name $Name
+	}
+	Add-Binary -Name "ecode.exe"
+	Add-Binary -Name "eterm.exe"
+	Add-Binary -Name "eeiv.exe"
+
+	# -----------------------------------------------------------------------
+	# Libraries: shared libraries required at runtime plus the import/static
+	# libraries useful for linking. Release configurations only. MSVC and
+	# MinGW produce different import library flavors; missing files (for
+	# example a MinGW import library on an MSVC build) are skipped with a
+	# warning.
+	# -----------------------------------------------------------------------
+
+	$SharedLibs = @("eepp.dll", "eepp-maps.dll", "eepp-physics.dll")
+
+	if ($Platform -eq "mingw") {
+		# MinGW import libraries (libeepp*.a, generated along with the DLLs)
+		# plus the statically linked modules and tools.
+		$LinkLibs = @(
+			"libeepp.a",
+			"libeepp-maps.a",
+			"libeepp-physics.a",
+			"libeepp-maps-static.a",
+			"libeepp-physics-static.a",
+			"libeterm.a",
+			"liblanguages-syntax-highlighting.a"
+		)
+	} else {
+		$LinkLibs = @(
+			"eepp.lib",
+			"eepp-maps.lib",
+			"eepp-physics.lib",
+			"eepp-maps-static.lib",
+			"eepp-physics-static.lib",
+			"eterm.lib",
+			"languages-syntax-highlighting.lib"
+		)
+	}
+
+	foreach ($Lib in $SharedLibs) {
+		$Source = "libs\windows\$Arch\$Lib"
+		if (-not (Test-Path $Source)) {
+			Write-Warning "Library not found, skipping: $Source"
+			continue
+		}
+		Copy-Item -Path $Source -Destination "$Staging\bin\$Lib"
+		Copy-Item -Path $Source -Destination "$Staging\libs\windows\$Arch\$Lib"
+	}
+
+	foreach ($Lib in $LinkLibs) {
+		$Source = "libs\windows\$Arch\$Lib"
+		if (-not (Test-Path $Source)) {
+			Write-Warning "Library not found, skipping: $Source"
+			continue
+		}
+		Copy-Item -Path $Source -Destination "$Staging\libs\windows\$Arch\$Lib"
+	}
+
+	# -----------------------------------------------------------------------
+	# Headers, documentation and package README.
+	# -----------------------------------------------------------------------
+
+	Copy-Item -Recurse -Path "include" -Destination "$Staging\include"
+	Copy-Item -Recurse -Path "docs\articles" -Destination "$Staging\docs\articles"
+	(Get-Content "projects\scripts\eepp-sdk-README.md" -Raw) -replace '@SDK_VERSION@', $Version | Set-Content "$Staging\README.md"
+
+	# SDL2 runtime DLL next to the binaries.
+	$SdlDll = "bin\SDL2.dll"
+	if (Test-Path $SdlDll) {
+		Copy-Item -Path $SdlDll -Destination "$Staging\bin\SDL2.dll"
+	}
+
+	# -----------------------------------------------------------------------
+	# Zip.
+	# -----------------------------------------------------------------------
+
+	$ZipName = "eepp-sdk-windows-$Arch-$Platform-$ArchiveSuffix.zip"
+	Compress-Archive -LiteralPath $Staging -DestinationPath "projects\windows\sdk\$ZipName" -Force
+	Write-Output "Generated projects\windows\sdk\$ZipName"
+} finally {
+	Pop-Location
+}
diff --git a/projects/scripts/package_sdk.sh b/projects/scripts/package_sdk.sh
new file mode 100755
index 000000000..bff0460df
--- /dev/null
+++ b/projects/scripts/package_sdk.sh
@@ -0,0 +1,424 @@
+#!/bin/bash
+
+# Packages the eepp SDK for Linux, macOS and MinGW (cross).
+#
+# Usage: ./package_sdk.sh <platform> <arch> [--strip] [--version <version>]
+# Examples:
+#   ./package_sdk.sh linux x86_64 --strip
+#   ./package_sdk.sh macos arm64
+#   ./package_sdk.sh windows x86_64 --strip    (MinGW cross build)
+#
+# --version accepts "nightly" (default) or a stable release tag of the form
+# eepp-%d.%d.%d (the tag prefix is stripped from the package names).
+#
+# Expects the release build to be present in bin/ and libs/ (see the CI workflows).
+# Produces projects/<platform>/sdk/eepp-sdk-<platform>-<arch>-nightly.tar.gz
+# (or eepp-sdk-windows-<arch>-mingw-nightly.zip for MinGW builds).
+#
+# Package layout mirrors the repository root:
+#   bin/assets + binaries, bin/ runtime libraries, libs/<platform>/<arch>/,
+#   include/ and docs/articles/.
+
+set -euo pipefail
+
+if [ $# -lt 2 ]; then
+	echo "Usage: $0 <platform> <arch> [--strip] [--version <version>]"
+	exit 1
+fi
+
+PLATFORM="$1"
+ARCH="$2"
+STRIP_BINARIES=false
+SDK_VERSION="nightly"
+while [ $# -gt 2 ]; do
+	case "$3" in
+		--strip)
+			STRIP_BINARIES=true
+			;;
+		--version)
+			SDK_VERSION="${4:-}"
+			if [ -z "$SDK_VERSION" ]; then
+				echo "Error: --version requires a value" >&2
+				exit 1
+			fi
+			shift
+			;;
+		-*)
+			echo "Unknown option: $3"
+			exit 1
+			;;
+	esac
+	shift
+done
+
+CANONPATH=$(readlink -f "$0")
+DIRPATH="$(dirname "$CANONPATH")"
+cd "$DIRPATH/../.." || exit 1
+ROOT="$PWD"
+
+SDK_DIRNAME="eepp-sdk"
+STAGING="projects/$PLATFORM/sdk/$SDK_DIRNAME"
+
+# Repository layout name used for libs/<platform>/<arch>/ (premake's os.target()).
+LIBS_PLATFORM="$PLATFORM"
+if [ "$PLATFORM" == "macos" ]; then
+	LIBS_PLATFORM="macosx"
+fi
+
+# Stable release tags use the eepp-%d.%d.%d format; strip the tag prefix for
+# the package names. Anything else must be "nightly".
+case "$SDK_VERSION" in
+	nightly)
+		ARCHIVE_SUFFIX="nightly"
+		;;
+	eepp-*.*)
+		if ! [[ "$SDK_VERSION" =~ ^eepp-[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+			echo "Error: invalid version '$SDK_VERSION' (expected nightly or eepp-%d.%d.%d)" >&2
+			exit 1
+		fi
+		ARCHIVE_SUFFIX="${SDK_VERSION#eepp-}"
+		;;
+	*)
+		echo "Error: invalid version '$SDK_VERSION' (expected nightly or eepp-%d.%d.%d)" >&2
+		exit 1
+		;;
+esac
+
+# Strip tool: the MinGW cross build needs the binutils of the target
+# toolchain; a native strip cannot handle PE binaries.
+if [ "$PLATFORM" == "windows" ]; then
+	STRIP_CMD="x86_64-w64-mingw32-strip"
+	if ! command -v "$STRIP_CMD" > /dev/null 2>&1; then
+		echo "Warning: $STRIP_CMD not found, binaries will not be stripped" >&2
+		STRIP_CMD=""
+	fi
+else
+	STRIP_CMD="strip"
+fi
+
+rm -rf "projects/$PLATFORM/sdk"
+mkdir -p "$STAGING/bin" "$STAGING/libs/$LIBS_PLATFORM/$ARCH" "$STAGING/docs"
+
+# ---------------------------------------------------------------------------
+# Assets: everything except the unit-test / benchmark-only asset directories.
+# ---------------------------------------------------------------------------
+
+mkdir -p "$STAGING/bin/assets"
+
+# Directories only consumed by unit tests or benchmarks.
+TEST_ONLY_ASSET_DIRS=(
+	html
+	logo
+	textfiles
+	textformat
+)
+
+# Individual files only consumed by unit tests or benchmarks.
+TEST_ONLY_ASSET_FILES=(
+	test.zip
+)
+
+is_test_only() {
+	local rel="$1"
+	local entry
+	for entry in "${TEST_ONLY_ASSET_DIRS[@]}"; do
+		if [ "$rel" == "$entry" ]; then
+			return 0
+		fi
+	done
+	for entry in "${TEST_ONLY_ASSET_FILES[@]}"; do
+		if [ "$rel" == "$entry" ]; then
+			return 0
+		fi
+	done
+	return 1
+}
+
+for entry in bin/assets/*; do
+	rel="${entry#bin/assets/}"
+	if is_test_only "$rel"; then
+		continue
+	fi
+	cp -r "$entry" "$STAGING/bin/assets/"
+done
+
+# ---------------------------------------------------------------------------
+# Binaries: every release executable in bin/ is packaged (any new "eepp-*"
+# binary is picked up automatically) plus the fixed tool set: ecode, eterm and
+# eeiv. Unit tests and benchmarks live outside bin/ and are never matched.
+# ---------------------------------------------------------------------------
+
+# Only accept the executable format of the target platform: prevents stale
+# cross-compile artifacts (for example MinGW .exe files lying around in bin/
+# of a Linux checkout) from leaking into the wrong package.
+is_executable() {
+	case "$PLATFORM" in
+		macos)
+			case "$(file -b "$1")" in
+				Mach-O*) return 0 ;;
+			esac
+			;;
+		windows)
+			case "$(file -b "$1")" in
+				*PE32*) return 0 ;;
+			esac
+			;;
+		*)
+			case "$(file -b "$1")" in
+				ELF*) return 0 ;;
+			esac
+			;;
+	esac
+	return 1
+}
+
+copy_binary() {
+	local src="$1"
+
+	if [ ! -f "$src" ]; then
+		echo "Warning: binary not found, skipping: $src" >&2
+		return 0
+	fi
+
+	if ! is_executable "$src"; then
+		return 0
+	fi
+
+	cp "$src" "$STAGING/bin/"
+	if [ "$STRIP_BINARIES" = true ] && [ -n "$STRIP_CMD" ]; then
+		"$STRIP_CMD" "$STAGING/bin/$(basename "$src")"
+	fi
+}
+
+for entry in bin/eepp-*; do
+	[ -e "$entry" ] || continue
+	case "$entry" in
+		*-debug | *.dll | *.so | *.dylib | *.a | *.data | *.html | *.js | *.wasm)
+			continue
+			;;
+	esac
+	copy_binary "$entry"
+done
+
+if [ "$PLATFORM" == "windows" ]; then
+	copy_binary bin/ecode.exe
+	copy_binary bin/eterm.exe
+	copy_binary bin/eeiv.exe
+else
+	copy_binary bin/ecode
+	copy_binary bin/eterm
+	copy_binary bin/eeiv
+fi
+
+# ---------------------------------------------------------------------------
+# Libraries: shared libraries required at runtime plus the static libraries
+# useful for linking. Release configurations only ("*-debug*" is skipped).
+# ---------------------------------------------------------------------------
+
+LIBS_SRC="libs/$LIBS_PLATFORM/$ARCH"
+if [ ! -d "$LIBS_SRC" ]; then
+	LIBS_SRC="libs/$LIBS_PLATFORM"
+fi
+
+if [ "$PLATFORM" == "macos" ]; then
+	SHARED_LIBS=(libeepp.dylib libeepp-maps.dylib libeepp-physics.dylib)
+	STATIC_LIBS=(
+		libeepp-maps-static.a
+		libeepp-physics-static.a
+		libeterm.a
+		liblanguages-syntax-highlighting.a
+	)
+elif [ "$PLATFORM" == "windows" ]; then
+	SHARED_LIBS=(eepp.dll eepp-maps.dll eepp-physics.dll)
+	# MinGW import libraries (libeepp*.a, generated along with the DLLs) plus
+	# the statically linked modules and tools.
+	STATIC_LIBS=(
+		libeepp.a
+		libeepp-maps.a
+		libeepp-physics.a
+		libeepp-maps-static.a
+		libeepp-physics-static.a
+		libeterm.a
+		liblanguages-syntax-highlighting.a
+	)
+else
+	SHARED_LIBS=(libeepp.so libeepp-maps.so libeepp-physics.so)
+	STATIC_LIBS=(
+		libeepp-maps-static.a
+		libeepp-physics-static.a
+		libeterm.a
+		liblanguages-syntax-highlighting.a
+	)
+fi
+
+copy_lib() {
+	local src="$1"
+	local dest_dir="$2"
+	local name
+	name="$(basename "$src")"
+
+	if [ ! -f "$src" ]; then
+		echo "Warning: library not found, skipping: $src" >&2
+		return 0
+	fi
+
+	cp -L "$src" "$dest_dir/"
+	if [ "$STRIP_BINARIES" = true ]; then
+		case "$name" in
+			*.a)
+				# Static archives only tolerate debug-symbol stripping: a full
+				# strip corrupts the archive's object members.
+				case "$PLATFORM" in
+					macos)
+						strip -S "$dest_dir/$name" 2>/dev/null || true
+						;;
+					windows)
+						[ -n "$STRIP_CMD" ] && "$STRIP_CMD" -g "$dest_dir/$name" 2>/dev/null || true
+						;;
+					*)
+						"$STRIP_CMD" --strip-debug "$dest_dir/$name" 2>/dev/null || true
+						;;
+				esac
+				;;
+			*)
+				case "$PLATFORM" in
+					macos)
+						# cctools strip has no --strip-unneeded; -x keeps local
+						# symbols (needed for linking) and drops debug info.
+						strip -x "$dest_dir/$name" 2>/dev/null || true
+						;;
+					*)
+						# Shared libraries stay runnable and linkable after
+						# removing the unneeded symbols.
+						"$STRIP_CMD" --strip-unneeded "$dest_dir/$name" 2>/dev/null || true
+						;;
+				esac
+				;;
+		esac
+	fi
+}
+
+for target in "$STAGING/bin" "$STAGING/libs/$LIBS_PLATFORM/$ARCH"; do
+	for lib in "${SHARED_LIBS[@]}"; do
+		copy_lib "$LIBS_SRC/$lib" "$target"
+	done
+done
+
+for lib in "${STATIC_LIBS[@]}"; do
+	copy_lib "$LIBS_SRC/$lib" "$STAGING/libs/$LIBS_PLATFORM/$ARCH"
+done
+
+# ---------------------------------------------------------------------------
+# Headers, documentation and package README.
+# ---------------------------------------------------------------------------
+
+cp -r include "$STAGING/include"
+cp -r docs/articles "$STAGING/docs/articles"
+sed "s/@SDK_VERSION@/$SDK_VERSION/g" projects/scripts/eepp-sdk-README.md > "$STAGING/README.md"
+
+# ---------------------------------------------------------------------------
+# macOS: make the package relocatable. The build links against homebrew's
+# SDL2 and against libs/<platform>/<arch>/ through absolute or homebrew paths;
+# rewrite every dependency to @loader_path and re-sign ad-hoc (mirroring what
+# projects/macos/ecode/build.app.sh does for ecode.app).
+# ---------------------------------------------------------------------------
+
+fix_macos_ids() {
+	local bin_dir="$STAGING/bin"
+
+	if [ "$PLATFORM" != "macos" ]; then
+		return 0
+	fi
+
+	# Point the shared libraries at their bundled SDL2 dependency.
+	for lib in "${SHARED_LIBS[@]}"; do
+		[ -f "$bin_dir/$lib" ] || continue
+		install_name_tool -change "$(otool -L "$bin_dir/$lib" | awk '/SDL2/ {print $1; exit}')" \
+			"@loader_path/libSDL2-2.0.0.dylib" "$bin_dir/$lib" 2>/dev/null || true
+	done
+
+	# The executables record the absolute path of the just-built libeepp.dylib;
+	# rewrite it (and any other eepp dependency) to its bundled location.
+	for exe in "$bin_dir"/*; do
+		[ -f "$exe" ] && is_executable "$exe" || continue
+		while read -r dep; do
+			case "$dep" in
+				*@loader_path* | */eepp-sdk/*)
+					continue
+					;;
+			esac
+			case "$(basename "$dep")" in
+				libeepp.dylib | libeepp-maps.dylib | libeepp-physics.dylib)
+					install_name_tool -change "$dep" "@loader_path/$(basename "$dep")" "$exe"
+					;;
+				libSDL2*.dylib)
+					if [ -f "$bin_dir/libSDL2-2.0.0.dylib" ]; then
+						install_name_tool -change "$dep" "@loader_path/libSDL2-2.0.0.dylib" "$exe"
+					fi
+					;;
+			esac
+		done < <(otool -L "$exe" | tail -n +2 | awk '{print $1}')
+		codesign --force --sign - "$exe" 2>/dev/null || true
+	done
+
+	for lib in "${SHARED_LIBS[@]}"; do
+		[ -f "$bin_dir/$lib" ] || continue
+		install_name_tool -id "@loader_path/$lib" "$bin_dir/$lib"
+		codesign --force --sign - "$bin_dir/$lib" 2>/dev/null || true
+	done
+
+	codesign --force --sign - "$STAGING/libs/$LIBS_PLATFORM/$ARCH"/*.dylib 2>/dev/null || true
+}
+
+# ---------------------------------------------------------------------------
+# Bundle SDL2 next to the binaries when available. Optional: the package
+# README documents the fallback to the system SDL2.
+# ---------------------------------------------------------------------------
+
+bundle_sdl2() {
+	if [ "$PLATFORM" == "windows" ]; then
+		# Premake already drops the SDL2 DLL into bin/ when configured with
+		# --windows-mingw-build.
+		if [ -f bin/SDL2.dll ]; then
+			cp -L bin/SDL2.dll "$STAGING/bin/"
+		else
+			echo "Warning: bin/SDL2.dll not found, the tools will require it at runtime" >&2
+		fi
+	elif [ "$PLATFORM" == "macos" ]; then
+		SDL2_PATH="$(brew --prefix)/opt/sdl2/lib/libSDL2-2.0.0.dylib"
+		if [ -f "$SDL2_PATH" ]; then
+			cp -L "$SDL2_PATH" "$STAGING/bin/"
+			chmod +w "$STAGING/bin/libSDL2-2.0.0.dylib"
+			install_name_tool -id "@loader_path/libSDL2-2.0.0.dylib" "$STAGING/bin/libSDL2-2.0.0.dylib"
+			codesign --force --sign - "$STAGING/bin/libSDL2-2.0.0.dylib" 2>/dev/null || true
+		fi
+	else
+		SDL2_PATH="$(ldd "$STAGING/bin/eepp-ui-hello-world" 2>/dev/null | awk '/libSDL[23]/ {print $3; exit}')"
+		if [ -n "$SDL2_PATH" ] && [ -f "$SDL2_PATH" ]; then
+			cp -L "$SDL2_PATH" "$STAGING/bin/"
+		fi
+	fi
+}
+
+bundle_sdl2
+fix_macos_ids
+
+# ---------------------------------------------------------------------------
+# Package archive: zip for Windows (keeps the +x bits intact in tar.gz for
+# Unix platforms).
+# ---------------------------------------------------------------------------
+
+ARCHIVE_BASE="eepp-sdk-$PLATFORM-$ARCH"
+if [ "$PLATFORM" == "windows" ]; then
+	ARCHIVE_NAME="$ARCHIVE_BASE-mingw-$ARCHIVE_SUFFIX.zip"
+	cd "projects/$PLATFORM/sdk"
+	zip -qr "$ARCHIVE_NAME" "$SDK_DIRNAME"
+	cd "$ROOT"
+else
+	ARCHIVE_NAME="$ARCHIVE_BASE-$ARCHIVE_SUFFIX.tar.gz"
+	cd "projects/$PLATFORM/sdk"
+	tar -czf "$ARCHIVE_NAME" "$SDK_DIRNAME"
+	cd "$ROOT"
+fi
+
+echo "Generated projects/$PLATFORM/sdk/$ARCHIVE_NAME"
\ No newline at end of file