Xcode9 Realm Error - No viable overloaded ‘=’ - c++

Question

I just install Xcode 9 and build my native iOS project. (Is written in swift)
The project was OK in Xcode 8 but now, I obtain this error:
No viable overloaded '='
In the file: Pods\Pods\Realm\object.cpp
Line 42 => m_notifier = std::make_shared<_impl::ObjectNotifier>(m_row, m_realm);

Answer 1

If you are using Cocoapods, open up the Podfile and set the RealmSwift version to 2.8.1 (or 2.8.3 as David mentioned above). Here is my Podfile for Swift 3.0 using Xcode 9:
target ‘<PROJECT>’ do
use_frameworks!
# Pods
...
pod 'RealmSwift', '2.8.1'
end
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['SWIFT_VERSION'] = '3.0'
end
end
end
Then, save the file and run:
pod install
If you're not setting a specific pod version (which I recommend), run the following command:
pod update RealmSwift
and it will automatically update to the most recent version (2.8.3).
Hope it helps to complement David's answer. Thanks!

Answer 2

The Realm team has worked on a new version allowing you to build your project with XCode 9.
Just update your Realm version to at least 2.8.1 (current version is 2.8.3)
https://github.com/realm/realm-cocoa/releases/tag/v2.8.1
The Realm release note of 2.8.1 clearly states :
Add support for building with Xcode 9 Beta 1.