1 files changed, 0 insertions, 63 deletions
diff --git a/syn/build.rs b/syn/build.rs
deleted file mode 100644
index c6040c1..0000000
--- a/syn/build.rs
+++ /dev/null
@@ -1,63 +0,0 @@
-use std::env;
-use std::process::Command;
-use std::str::{self, FromStr};
-
-// The rustc-cfg strings below are *not* public API. Please let us know by
-// opening a GitHub issue if your build environment requires some way to enable
-// these cfgs other than by executing our build script.
-fn main() {
-    let compiler = match rustc_version() {
-        Some(compiler) => compiler,
-        None => return,
-    };
-
-    if compiler.minor < 36 {
-        println!("cargo:rustc-cfg=syn_omit_await_from_token_macro");
-    }
-
-    if !compiler.nightly {
-        println!("cargo:rustc-cfg=syn_disable_nightly_tests");
-    }
-}
-
-struct Compiler {
-    minor: u32,
-    nightly: bool,
-}
-
-fn rustc_version() -> Option<Compiler> {
-    let rustc = match env::var_os("RUSTC") {
-        Some(rustc) => rustc,
-        None => return None,
-    };
-
-    let output = match Command::new(rustc).arg("--version").output() {
-        Ok(output) => output,
-        Err(_) => return None,
-    };
-
-    let version = match str::from_utf8(&output.stdout) {
-        Ok(version) => version,
-        Err(_) => return None,
-    };
-
-    let mut pieces = version.split('.');
-    if pieces.next() != Some("rustc 1") {
-        return None;
-    }
-
-    let next = match pieces.next() {
-        Some(next) => next,
-        None => return None,
-    };
-
-    let minor = match u32::from_str(next) {
-        Ok(minor) => minor,
-        Err(_) => return None,
-    };
-
-    Some(Compiler {
-        minor,
-        nightly: version.contains("nightly"),
-    })
-}