In your child project, add a new target by going into the project properties, clicking the + icon and picking Cross-platform > Other > Aggregate.
Go to the target’s tab Build phases and add a run script. Add the following code to the script, and make sure to replace Pixfeature with the framework’s title on line 7:
#!/bin/sh
UNIVERSAL_OUTPUTFOLDER=${BUILD_DIR}/${CONFIGURATION}-universal
FW_TARGET="Pixfeature"
# make sure the output directory exists
mkdir -p "${UNIVERSAL_OUTPUTFOLDER}"
# Step 1. Build Device and Simulator versions
xcodebuild -target "${FW_TARGET}" ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphoneos BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build
xcodebuild -target "${FW_TARGET}" -configuration ${CONFIGURATION} -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build
# Step 2. Copy the framework structure (from iphoneos build) to the universal folder
cp -R "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${FW_TARGET}.framework" "${UNIVERSAL_OUTPUTFOLDER}/"
# Step 3. Copy Swift modules from iphonesimulator build (if it exists) to the copied framework directory
SIMULATOR_SWIFT_MODULES_DIR="${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${FW_TARGET}.framework/Modules/${FW_TARGET}.swiftmodule/."
if [ -d "${SIMULATOR_SWIFT_MODULES_DIR}" ]; then
cp -R "${SIMULATOR_SWIFT_MODULES_DIR}" "${UNIVERSAL_OUTPUTFOLDER}/${FW_TARGET}.framework/Modules/${FW_TARGET}.swiftmodule"
fi
# Step 4. Create universal binary file using lipo and place the combined executable in the copied framework directory
lipo -create -output "${UNIVERSAL_OUTPUTFOLDER}/${FW_TARGET}.framework/${FW_TARGET}" "${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${FW_TARGET}.framework/${FW_TARGET}" "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${FW_TARGET}.framework/${FW_TARGET}"
# Step 5. Convenience step to copy the framework to the project's directory
cp -R "${UNIVERSAL_OUTPUTFOLDER}/${FW_TARGET}.framework" "${PROJECT_DIR}"
# Step 6. Convenience step to open the project's directory in Finder
open "${PROJECT_DIR}"
Now you can build this Target, it’ll create a framework file. Finder will open automatically to the output file.
In the parent project, you can embed this framework through the embedded binaries, and you’ll be able to import it in all classes.