libcurl-unity

A libcurl build tailored for unity

Supported Platforms

Platform	Architecture	Output	Minimum Version
macOS	ARM64	libcurl.dylib	macOS 11.0+ (Big Sur)
macOS	x86_64	libcurl.dylib	macOS 10.14+ (Mojave)
iOS	ARM64	libcurl.a (static library)	iOS 12.0
Android	arm64-v8a, armeabi-v7a, x86_64	libcurl.so	Android API 22 (Android 5.1)
Windows	x64, x86	libcurl.dll	Windows 7 SP1+

Dependencies

All dependencies are built as static libraries and linked into a single distributable library

Library	Version	Purpose
curl	8.21.0	Core HTTP client functionality
OpenSSL	3.6.2	TLS / HTTPS support
nghttp2	1.68.1	HTTP/2 support
nghttp3	1.15.0	HTTP/3 support
ngtcp2	1.21.0	QUIC transport support
zlib	1.3.2	Compression support (Windows/Android)

Project Structure

libcurl-unity/
├── deps/                       # Dependency sources (git submodules)
│   ├── curl/                   #   libcurl
│   ├── openssl/                #   OpenSSL
│   ├── nghttp2/                #   HTTP/2
│   ├── nghttp3/                #   HTTP/3
│   ├── ngtcp2/                 #   QUIC
│   └── zlib/                   #   zlib
├── bridge/                     # C bridge layer
│   ├── curl_unity_bridge.c     #   Variadic function wrappers
│   └── exports.def             #   Windows DLL export definitions
└── scripts/                    # Build scripts & utilities
    ├── build.sh                #   Main build script (macOS/iOS/Android)
    ├── build-windows.bat       #   Windows build script (MSVC)
    └── ...

Building

Requirements

• macOS/iOS/Android: macOS (Apple Silicon), Xcode 15+, CMake, Ninja
• Android: Android NDK required (via ANDROID_NDK_HOME or automatic detection)
• Windows: Windows build environment with MSVC (Visual Studio 2017+), CMake, Ninja, and Perl

Quick Start

# Build all platforms
./scripts/build-macos.sh            # macOS ARM64 + x86_64 → universal binary
./scripts/build-ios.sh              # iOS ARM64 static library
./scripts/build-android.sh          # Android armv7 + arm64 + x86_64
scripts\build-windows-x64.bat       # Windows x64
scripts\build-windows-x86.bat       # Windows x86

References

• 4AVolcano/curl-unity