Build fails with bindgen errors #121
Description
I've been trying to use this library in a no_std project, but the build of mbedtls-sys-auto always fails with a large number of Bindgen ERROR: unsupported type `CXTypeKind(119)` errors. I tried to make sure it wasn't the result of cross-compilation or a wrong selection of features by trying to include mbedtls as a dependency in an otherwise empty project (not no_std), but the build still fails with this same bindgen error.