Bash script to build a universal library from Xcode

BuildUniversalLib.sh

# Created by: Rostyslav Druzhchenko
#

# 1: Declare variables
RESULT_DIR="libUniversal"

BUILD_DIR_SIMULATOR="Debug-iphonesimulator"
BUILD_DIR_DEVICE="Debug-iphoneos"

LIB_NAME="Networking"
LIB_BINARY_NAME="lib$LIB_NAME.a"
LIB_BINARY_NAME_SIMULATOR="lib$LIB_NAME-simulator.a"
LIB_BINARY_NAME_DEVICE="lib$LIB_NAME-device.a"

SWIFTMODULE_DIR=$LIB_NAME".swiftmodule"

# 2: BUILD
#
# Build for simulator
xcodebuild -target $LIB_NAME -configuration ${CONFIGURATION} -sdk iphonesimulator -arch x86_64 BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}"

# Build for device
xcodebuild -target $LIB_NAME ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphoneos  BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}"

# 3: OPERATE THE BINARIES
#
# Move to the build directory
cd $BUILD_DIR

# Completely delete the result of the previous build if any
# Suppress the error to avoid unnecessary logs
rm -rf $BUILD_DIR/$RESULT_DIR 2> /dev/null

# Create a new result directory
mkdir $RESULT_DIR

# Copy simulator's binary file to the result dir and rename it
cp ./$BUILD_DIR_SIMULATOR/$LIB_BINARY_NAME ./$RESULT_DIR/$LIB_BINARY_NAME_SIMULATOR

# Copy devices's binary file to the result dir and rename it
cp ./$BUILD_DIR_DEVICE/$LIB_BINARY_NAME ./$RESULT_DIR/$LIB_BINARY_NAME_DEVICE

# Make the library "fat", means "universal"
lipo -create ./$RESULT_DIR/$LIB_BINARY_NAME_SIMULATOR ./$RESULT_DIR/$LIB_BINARY_NAME_DEVICE -output ./$RESULT_DIR/$LIB_BINARY_NAME

# Delete simulator's binary file
rm ./$RESULT_DIR/$LIB_BINARY_NAME_SIMULATOR

# Delete device's binary file
rm ./$RESULT_DIR/$LIB_BINARY_NAME_DEVICE

# 4: OPERATE SIWFTMODULE
#
# Create ".siwftmodule" directory in the result directory
mkdir $RESULT_DIR/$SWIFTMODULE_DIR

# Copy 'swiftmodule' related to simulator
cp -r $BUILD_DIR_SIMULATOR/$SWIFTMODULE_DIR $RESULT_DIR

# Copy 'swiftmodule' related to mobile divice
cp -r $BUILD_DIR_DEVICE/$SWIFTMODULE_DIR/* $RESULT_DIR/$SWIFTMODULE_DIR

# Delete build directory
rm -rf $PROJECT_DIR/build