Create a Universal Static Library/FAT framework for iOS. Combines arm (device) and x86(simulator) architectures.

fat-build.sh

#!/bin/sh

CUR_DIR=$(eval "pwd")
if [[ $1 == '' ]]; then
	echo "Provide scheme to generate the Frameworks"
	echo "./framework-build.sh (scheme_name)"
	exit 1
fi
scheme=$1

echo "Building for Device..."
xcodebuild -scheme $scheme SYMROOT="$CUR_DIR/Frameworks/Device"
DEV_LOC="$CUR_DIR/Frameworks/Device/Debug-iphoneos/$scheme.framework"
NEW_DEV_LOC="$CUR_DIR/Frameworks/Device/Debug-iphoneos/$scheme-dev.framework"

echo "Building for Simulator..."
xcodebuild -scheme $scheme -destination 'platform=iOS Simulator,name=iPhone XR,OS=12.1' SYMROOT="$CUR_DIR/Frameworks/Sim"
SIM_LOC="$CUR_DIR/Frameworks/Sim/Debug-iphonesimulator/$scheme.framework"
NEW_SIM_LOC="$CUR_DIR/Frameworks/Sim/Debug-iphonesimulator/$scheme-sim.framework"

echo "Renaming $DEV_LOC to $NEW_DEV_LOC"
mv $DEV_LOC $NEW_DEV_LOC

echo "Renaming $SIM_LOC to $NEW_SIM_LOC"
mv $SIM_LOC $NEW_SIM_LOC

echo "Moving $NEW_DEV_LOC to $CUR_DIR/Frameworks"
mv $NEW_DEV_LOC "$CUR_DIR/Frameworks"

echo "Moving $NEW_SIM_LOC to $CUR_DIR/Frameworks"
mv $NEW_SIM_LOC "$CUR_DIR/Frameworks"

echo "Removing Device and Sim Directories"
rm -r "$CUR_DIR/Frameworks/Device"
rm -r "$CUR_DIR/Frameworks/Sim"

echo "Backing up device framework"
cp -r "$CUR_DIR/Frameworks/$scheme-dev.framework" "$CUR_DIR/Frameworks/$scheme-device.framework"

echo "Creating FAT framework"
eval "lipo -create $CUR_DIR/Frameworks/$scheme-sim.framework/$scheme $CUR_DIR/Frameworks/$scheme-dev.framework/$scheme -output $CUR_DIR/Frameworks/$scheme"

echo "Copying swift module file"
mv "$CUR_DIR/Frameworks/$scheme" "$CUR_DIR/Frameworks/$scheme-dev.framework/"

echo "Appending iOS Simulator in Info.plist"
plutil -insert CFBundleSupportedPlatforms.1 -string iPhoneSimulator "$CUR_DIR/Frameworks/$scheme-dev.framework/Info.plist"

echo "copying simulator swiftmodule files to fat framework"
cp "$CUR_DIR/Frameworks/$scheme-sim.framework/Modules/$scheme.swiftmodule/x86_64.swiftdoc" "$CUR_DIR/Frameworks/$scheme-dev.framework/Modules/$scheme.swiftmodule/"
cp "$CUR_DIR/Frameworks/$scheme-sim.framework/Modules/$scheme.swiftmodule/x86_64.swiftmodule" "$CUR_DIR/Frameworks/$scheme-dev.framework/Modules/$scheme.swiftmodule/"

echo "renaming fat framework to actual framework name"
mv "$CUR_DIR/Frameworks/$scheme-dev.framework" "$CUR_DIR/Frameworks/$scheme.framework"

exit 0