Build a universal iOS framework/library

universal-framework.sh

#!/bin/bash

set -e

# required arguments:
# WORKSPACE_DIR=Networking.xcworkspace
# SCHEME_NAME=Networking
# PRODUCT_NAME=Networking

CONFIGURATION=Release

BUILD_DIR="$(pwd)/Build/${PRODUCT_NAME}"
BUILD_ROOT="${BUILD_DIR}"
UNIVERSAL_OUTPUTFOLDER="${BUILD_DIR}/${CONFIGURATION}-Universal"

rm -Rf "$BUILD_ROOT"

xcodebuild \
    -workspace "${WORKSPACE_DIR}" \
    -scheme "${SCHEME_NAME}" \
    -configuration "${CONFIGURATION}" \
    -sdk iphoneos \
    BUILD_DIR="${BUILD_DIR}" \
    BUILD_ROOT="${BUILD_ROOT}" \
    clean build

xcodebuild \
    -workspace "${WORKSPACE_DIR}" \
    -scheme "${SCHEME_NAME}" \
    -configuration "${CONFIGURATION}" \
    -sdk iphonesimulator \
    BUILD_DIR="${BUILD_DIR}" \
    BUILD_ROOT="${BUILD_ROOT}" \
    clean build

# Step 2. Copy the framework structure (from iphoneos build) to the universal folder
mkdir -p "${UNIVERSAL_OUTPUTFOLDER}"
cp -R \
    "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${PRODUCT_NAME}.framework" \
    "${UNIVERSAL_OUTPUTFOLDER}/${PRODUCT_NAME}.framework"

# Step 3. Copy Swift modules from iphonesimulator build (if it exists) to the copied framework directory
cp -R \
    "${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${PRODUCT_NAME}.framework/Modules/${PRODUCT_NAME}.swiftmodule/." \
    "${UNIVERSAL_OUTPUTFOLDER}/${PRODUCT_NAME}.framework/Modules/${PRODUCT_NAME}.swiftmodule"

# Step 4. Create universal binary file using lipo and place the combined executable in the copied framework directory
lipo -create \
    -output "${UNIVERSAL_OUTPUTFOLDER}/${PRODUCT_NAME}.framework/${PRODUCT_NAME}" \
    "${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${PRODUCT_NAME}.framework/${PRODUCT_NAME}" \
    "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${PRODUCT_NAME}.framework/${PRODUCT_NAME}"

open "${UNIVERSAL_OUTPUTFOLDER}"