Azure Mobile Services iOS Library fails to build with Release configuration - ios

Question

When archiving my iOS app the Windows Azure Mobile Services library fails to build.
The App builds fine when using Debug configuration.
While running this script:
/bin/sh -c \"/Users/user/Library/Developer/Xcode/DerivedData/myapp-bxucrfbhixkrpqfwaaovtqqpsvyd/Build/Intermediates/ArchiveIntermediates/MyApp\ (testing)/IntermediateBuildFilesPath/WindowsAzureMobileServices.build/Release-iphoneos/WindowsAzureMobileServices.build/Script-E8E37A27161FAA9600C13F00.sh\"
This turns out to be, this script form the "Build Phases" tab:
# Exit immediately on any errors
set -e
# Set some variables
OUTPUT=${BUILT_PRODUCTS_DIR}
WAMS="WindowsAzureMobileServices"
WAMS_FRAMEWORK="${WAMS}.framework"
WAMS_LIB="lib${WAMS}.a"
HEADERS="Headers"
# Create the needed directories for the framework
mkdir -p "${OUTPUT}/${WAMS_FRAMEWORK}/Versions/A"
mkdir -p "${OUTPUT}/${WAMS_FRAMEWORK}/Versions/A/Headers"
# Add the headers and lib to the framework
cp -a "${OUTPUT}/${HEADERS}/" "${OUTPUT}/${WAMS_FRAMEWORK}/Versions/A/Headers"
lipo -create "${OUTPUT}/${WAMS_LIB}" -output "${OUTPUT}/${WAMS_FRAMEWORK}/Versions/A/${WAMS}"
# Set up the links to complete the framework
ln -sf Versions/Current/Headers "${OUTPUT}/${WAMS_FRAMEWORK}/Headers"
ln -sf "Versions/Current/${WAMS}" "${OUTPUT}/${WAMS_FRAMEWORK}/${WAMS}"
ln -sf A "${OUTPUT}/${WAMS_FRAMEWORK}/Versions/Current"
It fails with this error:
cp:
/Users/user/Library/Developer/Xcode/DerivedData/MyApp-bxucrfbhixkrpqfwaaovtqqpsvyd/Build/Intermediates/ArchiveIntermediates/MyApp
(testing)/BuildProductsPath/Release-iphoneos/Headers/: No such file or
directory
I'm assuming that the error corresponds to this line:
cp -a "${OUTPUT}/${HEADERS}/" "${OUTPUT}/${WAMS_FRAMEWORK}/Versions/A/Headers"
I cannot see any differences in the build settings between Release and Debug.
Update
After some investigation I have determined that when Xcode archives a product it does not create the "headers" folder in ${BUILT_PRODUCTS_DIR}. It instead puts them in `/Build/Intermediates/ArchiveIntermediates/UninstalledProducts'. So the script fails.
Setting the "Skip Install" to NO for the Release build and then checking for the existence of the ${INSTALL_DIR} in the script will successfully build the library.
if [ -d "${INSTALL_DIR}" ]; then
cp -a "${INSTALL_DIR}/" "${OUTPUT}/${WAMS_FRAMEWORK}/Versions/A/Headers"
else
cp -a "${OUTPUT}/${HEADERS}/" "${OUTPUT}/${WAMS_FRAMEWORK}/Versions/A/Headers"
fi
However, Xcode failed to build because it can't find the headers:
fatal error: 'WindowsAzureMobileServices/WindowsAzureMobileServices.h' file not found
#import <WindowsAzureMobileServices/WindowsAzureMobileServices.h>
Update 2
Setting "Skip install" to no causes archiving issues, see this question: Compile, Build or Archive problems with Xcode 4 (and dependencies)
So I have removed the script that fails in the build phases and added "${PROJECT_DIR}/../azure-mobile-services/sdk/iOS/src" to the "User Header Search Paths" list.
This is messy and not my preferred solution.