Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Olof Johansson <olof@lixom.net>
To:     Miguel Ojeda <ojeda@kernel.org>,
        Alex Gaynor <alex.gaynor@gmail.com>,
        Wedson Almeida Filho <wedsonaf@gmail.com>
Cc:     Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>,
        =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= <bjorn3_gh@protonmail.com>,
        rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
        Olof Johansson <olof@lixom.net>
Subject: [PATCH] scripts: rust_is_available.sh: Provide hints on how to fix missing pieces
Date:   Tue,  4 Oct 2022 11:46:25 -0700
Message-Id: <20221004184625.10076-1-olof@lixom.net>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

This might be a bit bikesheddy, but it saves a few roundtrips to the
documentation when getting the `make LLVM=1 rustavailable` run to pass.

Stick to the rustup options to avoid too much verbosity.

Signed-off-by: Olof Johansson <olof@lixom.net>
---
 scripts/rust_is_available.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/scripts/rust_is_available.sh b/scripts/rust_is_available.sh
index aebbf1913970..94e6a1ce1df3 100755
--- a/scripts/rust_is_available.sh
+++ b/scripts/rust_is_available.sh
@@ -59,6 +59,9 @@ if [ "$rust_compiler_cversion" -lt "$rust_compiler_min_cversion" ]; then
 		echo >&2 "***   Your version:    $rust_compiler_version"
 		echo >&2 "***   Minimum version: $rust_compiler_min_version"
 		echo >&2 "***"
+		echo >&2 "*** To update to the expected version:"
+		echo >&2 "***   \$ rustup override set \$(scripts/min-tool-version.sh rustc)"
+		echo >&2 "***"
 	fi
 	exit 1
 fi
@@ -68,6 +71,9 @@ if [ "$1" = -v ] && [ "$rust_compiler_cversion" -gt "$rust_compiler_min_cversion
 	echo >&2 "***   Your version:     $rust_compiler_version"
 	echo >&2 "***   Expected version: $rust_compiler_min_version"
 	echo >&2 "***"
+	echo >&2 "*** To update to the expected version:"
+	echo >&2 "***   \$ rustup override set \$(scripts/min-tool-version.sh rustc)"
+	echo >&2 "***"
 fi
 
 # Check that the Rust bindings generator is suitable.
@@ -155,6 +161,9 @@ if [ ! -e "$rustc_src_core" ]; then
 		echo >&2 "*** Source code for the 'core' standard library could not be found"
 		echo >&2 "*** at '$rustc_src_core'."
 		echo >&2 "***"
+		echo >&2 "*** To install sources:"
+		echo >&2 "***   \$ rustup component add rust-src"
+		echo >&2 "***"
 	fi
 	exit 1
 fi
-- 
2.30.2