X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=setup-toolchain.sh;h=6038ed697f91ea7f2ccbec3672c6ac63bb2a695f;hb=6c25c3c381ccfa0bf9b7bc7386a09cc4421fd790;hp=aac18e3794647edbcb76dca2dac99f2e884d65de;hpb=7d7451a67a38157b51d24a28808ed199b1672a0c;p=rust.git

diff --git a/setup-toolchain.sh b/setup-toolchain.sh
index aac18e37946..6038ed697f9 100755
--- a/setup-toolchain.sh
+++ b/setup-toolchain.sh
@@ -1,13 +1,36 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Set up the appropriate rustc toolchain
 
 set -e
 
 cd "$(dirname "$0")"
 
-if [[ "$CI" == true ]] || ! command -v rustup-toolchain-install-master > /dev/null; then
-  cargo install -Z install-upgrade rustup-toolchain-install-master --bin rustup-toolchain-install-master
+RTIM_PATH=$(command -v rustup-toolchain-install-master) || INSTALLED=false
+CARGO_HOME=${CARGO_HOME:-$HOME/.cargo}
+
+# Check if RTIM is not installed or installed in other locations not in ~/.cargo/bin
+if [[ "$INSTALLED" == false || "$RTIM_PATH" == $CARGO_HOME/bin/rustup-toolchain-install-master ]]; then
+    cargo +nightly install rustup-toolchain-install-master
+else
+    VERSION=$(rustup-toolchain-install-master -V | grep -o "[0-9.]*")
+    REMOTE=$(cargo +nightly search rustup-toolchain-install-master | grep -o "[0-9.]*")
+    echo "info: skipping updating rustup-toolchain-install-master at $RTIM_PATH"
+    echo "      current version : $VERSION"
+    echo "      remote version  : $REMOTE"
+fi
+
+RUST_COMMIT=$(git ls-remote https://github.com/rust-lang/rust master | awk '{print $1}')
+
+if rustc +master -Vv 2>/dev/null | grep -q "$RUST_COMMIT"; then
+    echo "info: master toolchain is up-to-date"
+    exit 0
+fi
+
+if [[ -n "$HOST_TOOLCHAIN" ]]; then
+    TOOLCHAIN=('--host' "$HOST_TOOLCHAIN")
+else
+    TOOLCHAIN=()
 fi
 
-rustup-toolchain-install-master -f -n master
+rustup-toolchain-install-master -f -n master "${TOOLCHAIN[@]}" -c rustc-dev -- "$RUST_COMMIT"
 rustup override set master