Initial cargo-c support

Author: lu-zero

Cargo.toml

@@ -20,6 +20,7 @@ rust-version = "1.57"
 # libraries.
 no_log_capture = []
 read_buf = ["rustls/read_buf"]
+capi = []
 
 [dependencies]
 # Keep in sync with RUSTLS_CRATE_VERSION in build.rs
@@ -34,3 +35,16 @@ num_enum = "0.5.10"
 [lib]
 name = "rustls_ffi"
 crate-type = ["lib", "staticlib"]
+
+
+[package.metadata.capi.header]
+name = "rustls"
+subdirectory = false
+
+[package.metadata.capi.library]
+name = "rustls"
+rustflags = "-Cmetadata=rustls-ffi"
+
+[package.metadata.capi.pkg_config]
+name = "rustls"
+filename = "rustls"