SDK Setup for iOS / Android on OSX

This seems trivial, but I followed all the instructions and found that I cannot build for either.

For Android:
It stops on
"Command not found : arm-linux-androideabi-g++"

For iOS:
It stops on
"xcodebuild: error: SDK ‘iphoneos5.0’ cannot be located.
xcrun: error: unable to find utility ‘clang++’, not a developer tool or in PATH"

OSX currently has only iOS 9.3 SDK installed

Any help please? I though the setup would have been straight forward - and this is getting frustrating.

Thanks in Advance

Do you have Xcode installed? Have you run Android setup yet?

Yes and yes. I have Xcode 7.3.1 already installed prior to OpenFL installation, and have the Android NDK/SDK etc under /opt/android-ndk/, /opt/android-sdk/, /opt/apache-ant/, and /opt/X11/

Update on Xcode build - it was an extension I was trying to rebuild, the build config xml I updated to 9.3, was set to 5.0 - so fixed that part.
latest error for iOS build broken:
ld: symbol(s) not found for architecture i386

That iOS build error was when trying to compile (aka rebuild) HypTwitter extension for iOS, so for now, have commented out the use.

For Android, I had to change the Android-Build xml file and hard-code the part to arm-linux-androideabi-g++, as it seemed to get the wrong environment variable during build time and break.