c bindings doc
Check out `CMakeLists.txt` and change the 3 options to your preference:
- `NO_STD`: Enable no_std build, without iota_client (when ON, `SYNC_CLIENT` isnt supported)
-- `SYNC_CLIENT`: Enable sync transport via iota_client, otherwise it's going to be Bucket which can only be used for tests
+- `IOTA_CLIENT`: Enable transport via iota_client, otherwise it's going to be Bucket which can only be used for tests
- `STATIC`: Build static library when ON, otherwise dynamic library
- `RELEASE`: Build in release or debug mode (when ON, builds release, when OFF, build debug)
