error: unable to load standard library for target 'arm64-apple-ios10.0-simulator'?

Question

I updated my Xcode but not able to build. It's failing with:

<unknown>:0: error: unable to load standard library for target 'arm64-apple-ios10.0-simulator'

Merge Script:

 # 1
# Set bash script to exit immediately if any commands fail.
set -e

# 2
# Setup some constants for use later on.
FRAMEWORK_NAME="SDK"
OUTPUT_PATH="${SRCROOT}"

# 3
# If remnants from a previous build exist, delete them.
if [ -d "${SRCROOT}/build" ]; then
rm -rf "${SRCROOT}/build"
fi

# 4
# Build the framework for device and for simulator (using
# all needed architectures).
xcodebuild -target "${FRAMEWORK_NAME}" -configuration Release -arch 
arm64 -arch armv7 -arch armv7s only_active_arch=no defines_module=yes - 
sdk "iphoneos"
xcodebuild -target "${FRAMEWORK_NAME}" -configuration Release -arch 
x86_64 -arch i386 only_active_arch=no defines_module=yes -sdk 
"iphonesimulator"

Answer 1

For me just restarting Xcode solved it.

Answer 2

Actually solved this by selecting Generic iOS Device when building instead of a simulator device.

Edit: I should mention, in Xcode 10.

Edit 2: I'll post my universal framework script

set -e

######################
# Options
######################

REVEAL_ARCHIVE_IN_FINDER=true

FRAMEWORK_NAME="${PROJECT_NAME}"

SIMULATOR_LIBRARY_PATH="${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${FRAMEWORK_NAME}.framework"

DEVICE_LIBRARY_PATH="${BUILD_DIR}/${CONFIGURATION}-iphoneos/${FRAMEWORK_NAME}.framework"

UNIVERSAL_LIBRARY_DIR="${BUILD_DIR}/${CONFIGURATION}-iphoneuniversal"

FRAMEWORK="${UNIVERSAL_LIBRARY_DIR}/${FRAMEWORK_NAME}.framework"


######################
# Build Frameworks
######################


xcodebuild -project ${PROJECT_FILE_PATH} -scheme ${PROJECT_NAME} -sdk iphonesimulator -configuration ${CONFIGURATION} clean build CONFIGURATION_BUILD_DIR=${BUILD_DIR}/${CONFIGURATION}-iphonesimulator 2>&1


xcodebuild -project ${PROJECT_FILE_PATH} -scheme ${PROJECT_NAME} -sdk iphoneos -configuration ${CONFIGURATION} clean build CONFIGURATION_BUILD_DIR=${BUILD_DIR}/${CONFIGURATION}-iphoneos 2>&1


######################
# Create directory for universal
######################

rm -rf "${UNIVERSAL_LIBRARY_DIR}"

mkdir "${UNIVERSAL_LIBRARY_DIR}"

mkdir "${FRAMEWORK}"


######################
# Copy files Framework
######################

cp -r "${DEVICE_LIBRARY_PATH}/." "${FRAMEWORK}"


######################
# Make an universal binary
######################

lipo "${SIMULATOR_LIBRARY_PATH}/${FRAMEWORK_NAME}" "${DEVICE_LIBRARY_PATH}/${FRAMEWORK_NAME}" -create -output "${FRAMEWORK}/${FRAMEWORK_NAME}" | echo

# For Swift framework, Swiftmodule needs to be copied in the universal framework
if [ -d "${SIMULATOR_LIBRARY_PATH}/Modules/${FRAMEWORK_NAME}.swiftmodule/" ]; then
cp -f ${SIMULATOR_LIBRARY_PATH}/Modules/${FRAMEWORK_NAME}.swiftmodule/* "${FRAMEWORK}/Modules/${FRAMEWORK_NAME}.swiftmodule/" | echo
                                                                      fi

                                                                      if [ -d "${DEVICE_LIBRARY_PATH}/Modules/${FRAMEWORK_NAME}.swiftmodule/" ]; then
                                                                      cp -f ${DEVICE_LIBRARY_PATH}/Modules/${FRAMEWORK_NAME}.swiftmodule/* "${FRAMEWORK}/Modules/${FRAMEWORK_NAME}.swiftmodule/" | echo
                                                                      fi

                                                                      ######################
                                                                      # On Release, copy the result to release directory
                                                                      ######################
                                                                      OUTPUT_DIR="${PROJECT_DIR}/Output/${FRAMEWORK_NAME}-${CONFIGURATION}-iphoneuniversal/"

                                                                      rm -rf "$OUTPUT_DIR"
                                                                      mkdir -p "$OUTPUT_DIR"

                                                                      cp -r "${FRAMEWORK}" "$OUTPUT_DIR"

                                                                      if [ ${REVEAL_ARCHIVE_IN_FINDER} = true ]; then
                                                                      open "${OUTPUT_DIR}/"
                                                                  fi