X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=setup-toolchain.sh;h=469cba1874d652446b61bb14216f835926cf9ef2;hb=b4736b4d35313060a956470dd1e970376f9a0a1a;hp=b83116606894a5f0db885cb5233ff6eca6f85d14;hpb=52cebb1f8f8789b97d243c07bf4c961ca0017f7b;p=rust.git

diff --git a/setup-toolchain.sh b/setup-toolchain.sh
index b8311660689..469cba1874d 100755
--- a/setup-toolchain.sh
+++ b/setup-toolchain.sh
@@ -3,14 +3,34 @@
 
 set -e
 
-cd "$(dirname "$0")" || exit
+cd "$(dirname "$0")"
 
-if ! command -v rustup-toolchain-install-master > /dev/null; then
-  cargo install \
-    rustup-toolchain-install-master \
-    --bin rustup-toolchain-install-master \
-    --debug
+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