From ae449d534a34e6ffff2549ec5484d9c93b051ae8 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <jorge@japaric.io>
Date: Fri, 6 Apr 2018 16:27:08 +0200
Subject: [PATCH] drop support of older nightlies

Minor version has been bumped to v0.4.0 so we can stop supporting them

This also drop the chrono dependency, which some people have been running into problems with.

closes #60
---
 Cargo.toml        |  4 ----
 build.rs          | 13 -------------
 src/lang_items.rs | 11 -----------
 3 files changed, 28 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 50860340..45f0b077 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,3 @@ r0 = "0.2.1"
 [features]
 # provides a panic_fmt implementation that calls the abort instruction (`udf 0xfe`)
 abort-on-panic = []
-
-[build-dependencies]
-rustc_version = "0.2.1"
-chrono = "0.4.0"
diff --git a/build.rs b/build.rs
index 7784b980..1d0160c0 100644
--- a/build.rs
+++ b/build.rs
@@ -1,22 +1,9 @@
-extern crate chrono;
-extern crate rustc_version;
-
 use std::env;
 use std::fs::File;
 use std::io::Write;
 use std::path::PathBuf;
 
-use chrono::NaiveDate;
-
 fn main() {
-    let meta = rustc_version::version_meta().unwrap();
-    if meta.channel == rustc_version::Channel::Dev
-        || meta.commit_date.unwrap().parse::<NaiveDate>().unwrap()
-            > NaiveDate::from_ymd(2017, 12, 26)
-    {
-        println!("cargo:rustc-cfg=has_termination_lang")
-    }
-
     let target = env::var("TARGET").unwrap();
 
     has_fpu(&target);
diff --git a/src/lang_items.rs b/src/lang_items.rs
index f3750a09..7d7a598c 100644
--- a/src/lang_items.rs
+++ b/src/lang_items.rs
@@ -24,7 +24,6 @@ unsafe extern "C" fn panic_fmt(_: ::core::fmt::Arguments, _: &'static str, _: u3
 // The final piece is that the entry point of our program, the reset handler,
 // has to call `rustc_main`. That's covered by the `reset_handler` function in
 // root of this crate.
-#[cfg(has_termination_lang)]
 #[lang = "start"]
 extern "C" fn start<T>(main: fn() -> T, _argc: isize, _argv: *const *const u8) -> isize
 where
@@ -35,21 +34,11 @@ where
     0
 }
 
-#[cfg(not(has_termination_lang))]
-#[lang = "start"]
-extern "C" fn start(main: fn(), _argc: isize, _argv: *const *const u8) -> isize {
-    main();
-
-    0
-}
-
 #[lang = "termination"]
-#[cfg(has_termination_lang)]
 pub trait Termination {
     fn report(self) -> i32;
 }
 
-#[cfg(has_termination_lang)]
 impl Termination for () {
     fn report(self) -> i32 {
         0