Use leveldb-library.framework from firebase for iOS with Xcode9 - objective-c

Question

I would like to be able to use the leveldb-library.framework that google is shipping with their firebase iOS SDK. I don't seem to be able to import the framework.
What I did:
1: copy leveldb-library.framework to project dir
2: in Xcode > Target > Linked Frameworks and Libraries [+] add the framework
3: make sure the header search path it set correctly
4: add a Objective-C++ wrapper class and import the leveldb headers
Getting a linker error:
/Users/ronny/projects/clients/internal/TestCD/TestCD/LevelDB.mm:11:9: fatal error: 'leveldb/db.h' file not found
#import "leveldb/db.h"
^~~~~~~~~~~~~~
1 error generated.
The Headers directory in the framework provides all the headers: db.h, options.h but without the "leveldb" parent directory.
Changing the imports to the following throws the same error:
#import <leveldb/db.h>
#import <leveldb/options.h>
Once I change the imports to this:
#import <leveldb-library/db.h>
#import <leveldb-library/options.h>
the linker is able to find the includes but throws another error:
In file included from /Users/ronny/projects/clients/internal/TestCD/TestCD/LevelDB.mm:11:
/Users/ronny/projects/clients/internal/TestCD/leveldb-library.framework/Headers/db.h:10:10: fatal error: 'leveldb/iterator.h' file not found
#include "leveldb/iterator.h"
^~~~~~~~~~~~~~~~~~~~
1 error generated.
At this point I am no longer sure what can be done in order to resolve this. Adding the import path doesn't help either. Xcode completes the import as such:
Any pointers towards solving this would be greatly appreciated. The project can be found here: https://github.com/ronnyf/TestCD

Answer 1

The framework expects to be called leveldb, but your example calls it leveldb-library.
mv leveldb-library.framework leveldb.framework
mv leveldb.framework/leveldb-library leveldb.framework/leveldb
Update the Xcode project with the renamed framework and it successfully builds.