Move the language configuration to cbindgen.toml

Author: lu-zero

Makefile

@@ -39,7 +39,7 @@ target:
 	mkdir -p $@
 
 src/rustls.h: src/*.rs cbindgen.toml
-	cbindgen --lang C > $@
+	cbindgen > $@
 
 target/$(PROFILE)/librustls_ffi.a: src/*.rs Cargo.toml
 	RUSTFLAGS="-C metadata=rustls-ffi" ${CARGO} build $(CARGOFLAGS)

cbindgen.toml

@@ -1,4 +1,5 @@
 include_guard = "RUSTLS_H"
+language = "C"
 
 usize_is_size_t = true