Compile libssh2 from source for macOS, creating a universal xcframework that works for Intel (x86_64) and Apple Silicon (arm64)

gistfile1.txt

#!/usr/bin/env zsh

set -e

# This script compiles libssh2 from source for macOS, creating a universal xcframework that works for Intel (x86_64) and Apple Silicon (arm64).
# How to use it: download or clone libssh2. Put this script in the root of the repository and run it.

SDK=macosx
SDK_VERSION="14.0"

# Set up a build directory
SOURCE_ROOT="$(pwd)";
BUILD_ROOT="/private/tmp/libssh-macos";
rm -rf $BUILD_ROOT;
mkdir -p $BUILD_ROOT;
cd $BUILD_ROOT

# Generate an Xcode project using cmake
cmake -S "$SOURCE_ROOT" -B "$BUILD_ROOT" \
    -G Xcode \
    -DBUILD_STATIC_LIBS=ON \
    -DCMAKE_OSX_SYSROOT=$(xcrun --sdk $SDK --show-sdk-path) \
    -DCMAKE_OSX_DEPLOYMENT_TARGET=$SDK_VERSION \
    -DBUILD_SHARED_LIBS=OFF \
    -DCRYPTO_BACKEND=OpenSSL

# Build the static library
xcodebuild archive \
    -project libssh2.xcodeproj \
    -scheme libssh2_static \
    -destination "generic/platform=macOS" \
    -archivePath "$BUILD_ROOT/libssh2-macOS.xcarchive" \
    INSTALL_PATH="/" \
    SKIP_INSTALL=NO \
    BUILD_LIBRARY_FOR_DISTRIBUTION=YES \
    ARCHS='$(ARCHS_STANDARD)'

# Create the xcframework
OUTPUT_FRAMEWORK="libssh2.xcframework"
xcodebuild -create-xcframework \
    -library "$BUILD_ROOT/libssh2-macOS.xcarchive/Products/libssh2.a" \
    -headers "$SOURCE_ROOT/include" \
    -output "$OUTPUT_FRAMEWORK"

echo "Success! The libssh2 xcframework is located at $OUTPUT_FRAMEWORK"