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feat: Transform to PublishAotCompressed.macOS for cross-compilation
Major changes: - Rename all files with .macOS suffix for clear branding - Remove Linux/Windows UPX tools, keep only macOS ARM64 version - Add smart compression: compress Windows/Linux, skip macOS targets - Add short parameter support: /p:Upx=true|false - Add comprehensive bilingual documentation (English + Chinese) - Update CI/CD workflow for macOS-only builds - Integrate with PublishAotCross.macOS ecosystem Features: ✅ Automatic UPX compression after Native AOT compilation ✅ Cross-compilation support for Windows and Linux from macOS ✅ 60%+ typical compression rates ✅ Smart detection to skip macOS targets automatically ✅ Optional LZMA for better compression Closes MichalStrehovsky#1
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‎.github/workflows/main.yml‎

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jobs:
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build_and_test:
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strategy:
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matrix:
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include:
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- vm: ubuntu-latest
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# - vm: windows-latest
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runs-on: ${{ matrix.vm }}
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name: Build and test ${{ matrix.vm }}
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runs-on: macos-latest
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name: Build and test on macOS
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steps:
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- name: Checkout repo
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uses: actions/checkout@v3
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- name: Setup dotnet
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uses: actions/setup-dotnet@v2
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uses: actions/checkout@v4
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- name: Setup .NET
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uses: actions/setup-dotnet@v4
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with:
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dotnet-version: '7.0.x'
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dotnet-version: '9.0.x'
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include-prerelease: true
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- name: Build (CI)
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- name: Install UPX
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run: brew install upx
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- name: Build Package (CI)
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if: ${{ github.event.inputs.version == '' }}
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run: |
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dotnet build -t:Pack src/PublishAotCompressed.nuproj
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dotnet publish -r linux-x64 -c Release test/Hello.csproj
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- name: Build (CD)
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dotnet build -t:Pack src/PublishAotCompressed.macOS.nuproj
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- name: Test - Build for macOS (should skip UPX)
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if: ${{ github.event.inputs.version == '' }}
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run: |
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dotnet publish -r osx-arm64 -c Release test/Hello.csproj
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ls -lh test/bin/Release/net9.0/osx-arm64/publish/
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- name: Build Package (CD)
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if: ${{ github.event.inputs.version != '' }}
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run: dotnet build -t:Pack src/PublishAotCompressed.nuproj -p:Version=${{ github.event.inputs.version }}
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- name: Archive NuGet
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run: dotnet build -t:Pack src/PublishAotCompressed.macOS.nuproj -p:Version=${{ github.event.inputs.version }}
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- name: Archive NuGet Package
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if: ${{ github.event.inputs.version != '' }}
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uses: actions/upload-artifact@v4
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with:
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name: PublishAotCompressed.${{ github.event.inputs.version }}.nupkg
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path: src/bin/Debug/PublishAotCompressed.${{ github.event.inputs.version }}.nupkg
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- name: Create tag
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if: ${{ github.event.inputs.version != '' && github.actor == 'MichalStrehovsky' }}
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name: PublishAotCompressed.macOS.${{ github.event.inputs.version }}.nupkg
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path: src/bin/Debug/PublishAotCompressed.macOS.${{ github.event.inputs.version }}.nupkg
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- name: Create Release Tag
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if: ${{ github.event.inputs.version != '' }}
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run: |
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git config user.name github-actions
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git config user.email github-actions@github.com
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git tag v${{ github.event.inputs.version }}
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git push origin v${{ github.event.inputs.version }}

‎.gitignore‎

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# Build results
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[Bb]in/
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[Oo]bj/
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[Ll]og/
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[Ll]ogs/
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# .NET Core
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project.lock.json
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project.fragment.lock.json
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artifacts/
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# NuGet Packages
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*.nupkg
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# NuGet Symbol Packages
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*.snupkg
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# The packages folder can be ignored because of Package Restore
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**/[Pp]ackages/*
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# macOS
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.DS_Store
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.AppleDouble
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.LSOverride
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# Visual Studio Code
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.vscode/
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*.code-workspace
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# Rider
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.idea/
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# User-specific files
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*.rsuser
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*.suo
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*.user
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*.userosscache
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*.sln.docstates
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# Windows
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Thumbs.db
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ehthumbs.db
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Desktop.ini
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‎README.md‎

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# PublishAotCompressed
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# PublishAotCompressed.macOS
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This is a NuGet package with an MSBuild target to compress results of [PublishAot](https://learn.microsoft.com/en-us/dotnet/core/deploying/native-aot/) with [UPX](https://upx.github.io/). Simply add a reference to this package and publish with `PublishAot` as usual. The result of AOT compilation will be compressed. UPX typically achieves 60% or more size savings. To achieve even more compression at the cost of startup time, specify `<PublishLzmaCompressed>true</PublishLzmaCompressed>` property as well.
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MSBuild targets to automatically compress Native AOT binaries with UPX on macOS. Designed to work seamlessly with cross-compilation tools like [PublishAotCross.macOS](https://github.com/interface95/PublishAotCross.macOS).
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UPX will in-memory decompress the program at launch. This is typically not observable.
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## Features
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A Hello World style program with `<UseSystemResourceKeys>true</UseSystemResourceKeys>` and `<InvariantGlobalization>true</InvariantGlobalization>` (two [documented](https://docs.microsoft.com/en-us/dotnet/core/deploying/trimming/trimming-options?pivots=dotnet-6-0#trimming-framework-library-features) size savings options that pretty much everyone should enable) compressed with UPX is around 830 kB in size, fully self-contained. (On Linux, don't forget to also set `<StripSymbols>true</StripSymbols>`, the [documented](https://learn.microsoft.com/en-us/dotnet/core/deploying/native-aot/) switch to place debugging symbols into a separate file.)
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- ✅ **Automatic UPX compression** after Native AOT compilation
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- ✅ **Cross-compilation support** - compress binaries for Windows and Linux from macOS
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- ✅ **macOS-only** - streamlined for macOS development workflow
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- ✅ **60%+ size reduction** typical compression rates
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- ✅ **Optional LZMA** for even better compression
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## Prerequisites
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- **macOS** (Apple Silicon or Intel)
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- **.NET 9.0 SDK** or later
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- **UPX** installed via Homebrew:
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```bash
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brew install upx
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```
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## Quick Start
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### 1. Install Cross-Compilation Tools
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For cross-compiling to Windows/Linux, install [PublishAotCross.macOS](https://github.com/interface95/PublishAotCross.macOS):
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```xml
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<PackageReference Include="PublishAotCross.macOS" Version="1.0.2-preview" />
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<PackageReference Include="PublishAotCompressed.macOS" Version="1.0.0-dev" />
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```
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### 2. Configure Your Project
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```xml
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net9.0</TargetFramework>
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<PublishAot>true</PublishAot>
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<!-- Recommended size optimizations -->
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<UseSystemResourceKeys>true</UseSystemResourceKeys>
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<InvariantGlobalization>true</InvariantGlobalization>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="PublishAotCross.macOS" Version="1.0.2-preview" />
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<PackageReference Include="PublishAotCompressed.macOS" Version="1.0.0-dev" />
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</ItemGroup>
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</Project>
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```
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### 3. Publish with Compression
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#### For Windows (via lld-link + xwin):
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```bash
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# Make sure lld-link is in PATH
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export PATH="$(brew --prefix lld)/bin:$PATH"
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# Publish and compress
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dotnet publish -r win-x64 -c Release
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dotnet publish -r win-arm64 -c Release
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```
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#### For Linux (via Zig):
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```bash
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# Publish and compress
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dotnet publish -r linux-x64 -c Release /p:StripSymbols=false
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dotnet publish -r linux-arm64 -c Release /p:StripSymbols=false
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# For Alpine Linux (musl)
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dotnet publish -r linux-musl-x64 -c Release /p:StripSymbols=false
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dotnet publish -r linux-musl-arm64 -c Release /p:StripSymbols=false
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```
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#### For macOS (native):
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```bash
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dotnet publish -r osx-arm64 -c Release
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dotnet publish -r osx-x64 -c Release
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```
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> ✅ **Note**: macOS targets automatically skip UPX compression. The package will display a message and produce uncompressed binaries that run normally. This is by design since UPX-compressed macOS binaries cannot run due to security restrictions.
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## Configuration
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### Compression Settings
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You can use either the full property name or the short alias:
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```xml
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<PropertyGroup>
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<!-- Short property name (recommended) -->
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<Upx>false</Upx>
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<!-- Or use the full property name -->
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<PublishAotCompressed>false</PublishAotCompressed>
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<!-- Use best compression (default: true) -->
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<CompressBest>true</CompressBest>
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<!-- Use LZMA for maximum compression (slower startup) -->
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<PublishLzmaCompressed>true</PublishLzmaCompressed>
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</PropertyGroup>
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```
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**Command line usage:**
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```bash
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# Enable compression (short form) ✅ Recommended
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dotnet publish -r win-x64 -c Release /p:Upx=true
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# Disable compression (short form) ✅ Recommended
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dotnet publish -r win-x64 -c Release /p:Upx=false
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# Or use the full property name
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dotnet publish -r win-x64 -c Release /p:PublishAotCompressed=false
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```
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### Typical Results
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For a Hello World program with size optimizations enabled:
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| Target | Uncompressed | Compressed | Ratio |
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|--------|--------------|------------|-------|
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| Windows x64 | ~1.2 MB | ~500 KB | 58% |
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| Linux x64 | ~1.3 MB | ~520 KB | 60% |
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| macOS ARM64 | ~1.2 MB | N/A (skipped) | - |
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## How It Works
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This package hooks into the Native AOT build process (`AfterTargets="LinkNative"`):
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1. **Detects platform**: Identifies target OS (Windows/Linux/macOS) from RuntimeIdentifier
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2. **Selects UPX**: Uses macOS ARM64 UPX tool from the package
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3. **Compresses binary**: Runs UPX with appropriate flags for the target platform
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4. **Validates**: Ensures running on macOS (cross-compilation host)
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**Build Flow:**
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```
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.NET AOT Compiler → Native Binary → UPX Compression → Compressed Executable
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(on macOS) (.exe/.elf) (macOS tool) (for target OS)
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```
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## Cross-Compilation Matrix
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| Source (Build Host) | Target Platform | UPX Support | Tool Required |
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|---------------------|----------------|-------------|---------------|
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| macOS ARM64 | win-x64/arm64 | ✅ Compresses | PublishAotCross.macOS |
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| macOS ARM64 | linux-x64/arm64 | ✅ Compresses | PublishAotCross.macOS |
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| macOS ARM64 | osx-arm64/x64 | ⏭️ Skipped (auto) | Native AOT |
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## Important Notes
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### macOS Target Binaries
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This package **automatically skips UPX compression** for macOS targets (osx-arm64, osx-x64) because:
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- UPX-compressed macOS binaries cannot run due to System Integrity Protection (SIP)
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- Code signing is incompatible with UPX compression
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- Gatekeeper blocks execution of compressed binaries
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When you build for macOS, you'll see this message:
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```
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Skipping UPX compression for macOS target (osx-arm64). This package is designed
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for cross-compilation to Windows/Linux only.
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```
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**The produced macOS binary will be uncompressed and run normally.** No action needed!
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### Linux Deployment
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Native AOT Linux binaries require **ICU library** on target system:
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```bash
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# Ubuntu/Debian
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sudo apt-get install -y libicu-dev
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# Alpine Linux
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apk add --no-cache icu-libs
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```
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Or disable ICU dependency:
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```xml
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<InvariantGlobalization>true</InvariantGlobalization>
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```
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## Troubleshooting
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### UPX not found
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```bash
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brew install upx
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```
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### "PublishAotCompressed.macOS can only be used on macOS"
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This package only works on macOS. For other platforms, use:
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- [PublishAotCompressed](https://github.com/MichalStrehovsky/PublishAotCompressed) (original, multi-platform)
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### Cross-compilation fails
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Make sure you've installed the cross-compilation tools:
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- For Windows: See [PublishAotCross.macOS Windows setup](https://github.com/interface95/PublishAotCross.macOS#for-windows-cross-compilation)
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- For Linux: See [PublishAotCross.macOS Linux setup](https://github.com/interface95/PublishAotCross.macOS#for-linux-cross-compilation)
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## Example Project
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See the `test/` directory for a minimal example.
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## Related Projects
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- **[PublishAotCross.macOS](https://github.com/interface95/PublishAotCross.macOS)** - Cross-compilation from macOS to Windows/Linux
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- **[PublishAotCompressed](https://github.com/MichalStrehovsky/PublishAotCompressed)** - Original multi-platform UPX compression package
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## License
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MIT License - see LICENSE.TXT for details.
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## Credits
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- Based on [PublishAotCompressed](https://github.com/MichalStrehovsky/PublishAotCompressed) by Michal Strehovsky
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- UPX by [UPX Team](https://upx.github.io/)
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- Designed to work with [PublishAotCross.macOS](https://github.com/interface95/PublishAotCross.macOS)

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