all: remove c_variadic feature

build/build.rs

@@ -24,6 +24,7 @@ use std::{
 
 mod egl;
 mod enums;
+mod logging;
 mod tokens;
 mod vulkan;
 mod wire;
@@ -49,6 +50,7 @@ fn main() -> anyhow::Result<()> {
     enums::main()?;
     egl::main()?;
     vulkan::main()?;
+    logging::main()?;
 
     println!("cargo:rerun-if-changed=build/build.rs");
     Ok(())

build/logging.rs

@@ -0,0 +1,5 @@
+pub fn main() -> anyhow::Result<()> {
+    println!("cargo:rerun-if-changed=src/bridge.c");
+    cc::Build::new().file("src/bridge.c").compile("bridge");
+    Ok(())
+}