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From:   Masahiro Yamada <masahiroy@kernel.org>
To:     linux-kbuild@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org,
        Masahiro Yamada <masahiroy@kernel.org>,
        Miguel Ojeda <ojeda@kernel.org>,
        Alex Gaynor <alex.gaynor@gmail.com>,
        =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= <bjorn3_gh@protonmail.com>,
        Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Nicolas Schier <nicolas@fjasle.eu>, Tom Rix <trix@redhat.com>,
        Wedson Almeida Filho <wedsonaf@gmail.com>,
        llvm@lists.linux.dev, rust-for-linux@vger.kernel.org
Subject: [PATCH v2] kbuild: rust: remove -v option of scripts/rust_is_available.sh
Date:   Mon,  9 Jan 2023 15:14:36 +0900
Message-Id: <20230109061436.3146442-1-masahiroy@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

The -v option is passed when this script is invoked from Makefile,
but not when invoked from Kconfig.

As you can see in scripts/Kconfig.include, the 'success' macro suppresses
stdout and stderr anyway, so this script does not need to be quiet.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
---

Changes in v2:
  - Fix description (scripts -> script)
  - Remove stale comment

 Makefile                     |  4 +-
 scripts/rust_is_available.sh | 96 +++++++++++++++---------------------
 2 files changed, 42 insertions(+), 58 deletions(-)

diff --git a/Makefile b/Makefile
index c1f59f54ae90..59d827b85888 100644
--- a/Makefile
+++ b/Makefile
@@ -1288,7 +1288,7 @@ prepare0: archprepare
 # All the preparing..
 prepare: prepare0
 ifdef CONFIG_RUST
-	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh -v
+	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh
 	$(Q)$(MAKE) $(build)=rust
 endif
 
@@ -1813,7 +1813,7 @@ $(DOC_TARGETS):
 # "Is Rust available?" target
 PHONY += rustavailable
 rustavailable:
-	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh -v && echo "Rust is available!"
+	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh && echo "Rust is available!"
 
 # Documentation target
 #
diff --git a/scripts/rust_is_available.sh b/scripts/rust_is_available.sh
index aebbf1913970..f43a010eaf30 100755
--- a/scripts/rust_is_available.sh
+++ b/scripts/rust_is_available.sh
@@ -2,8 +2,6 @@
 # SPDX-License-Identifier: GPL-2.0
 #
 # Tests whether a suitable Rust toolchain is available.
-#
-# Pass `-v` for human output and more checks (as warnings).
 
 set -e
 
@@ -23,21 +21,17 @@ get_canonical_version()
 
 # Check that the Rust compiler exists.
 if ! command -v "$RUSTC" >/dev/null; then
-	if [ "$1" = -v ]; then
-		echo >&2 "***"
-		echo >&2 "*** Rust compiler '$RUSTC' could not be found."
-		echo >&2 "***"
-	fi
+	echo >&2 "***"
+	echo >&2 "*** Rust compiler '$RUSTC' could not be found."
+	echo >&2 "***"
 	exit 1
 fi
 
 # Check that the Rust bindings generator exists.
 if ! command -v "$BINDGEN" >/dev/null; then
-	if [ "$1" = -v ]; then
-		echo >&2 "***"
-		echo >&2 "*** Rust bindings generator '$BINDGEN' could not be found."
-		echo >&2 "***"
-	fi
+	echo >&2 "***"
+	echo >&2 "*** Rust bindings generator '$BINDGEN' could not be found."
+	echo >&2 "***"
 	exit 1
 fi
 
@@ -53,16 +47,14 @@ rust_compiler_min_version=$($min_tool_version rustc)
 rust_compiler_cversion=$(get_canonical_version $rust_compiler_version)
 rust_compiler_min_cversion=$(get_canonical_version $rust_compiler_min_version)
 if [ "$rust_compiler_cversion" -lt "$rust_compiler_min_cversion" ]; then
-	if [ "$1" = -v ]; then
-		echo >&2 "***"
-		echo >&2 "*** Rust compiler '$RUSTC' is too old."
-		echo >&2 "***   Your version:    $rust_compiler_version"
-		echo >&2 "***   Minimum version: $rust_compiler_min_version"
-		echo >&2 "***"
-	fi
+	echo >&2 "***"
+	echo >&2 "*** Rust compiler '$RUSTC' is too old."
+	echo >&2 "***   Your version:    $rust_compiler_version"
+	echo >&2 "***   Minimum version: $rust_compiler_min_version"
+	echo >&2 "***"
 	exit 1
 fi
-if [ "$1" = -v ] && [ "$rust_compiler_cversion" -gt "$rust_compiler_min_cversion" ]; then
+if [ "$rust_compiler_cversion" -gt "$rust_compiler_min_cversion" ]; then
 	echo >&2 "***"
 	echo >&2 "*** Rust compiler '$RUSTC' is too new. This may or may not work."
 	echo >&2 "***   Your version:     $rust_compiler_version"
@@ -82,16 +74,14 @@ rust_bindings_generator_min_version=$($min_tool_version bindgen)
 rust_bindings_generator_cversion=$(get_canonical_version $rust_bindings_generator_version)
 rust_bindings_generator_min_cversion=$(get_canonical_version $rust_bindings_generator_min_version)
 if [ "$rust_bindings_generator_cversion" -lt "$rust_bindings_generator_min_cversion" ]; then
-	if [ "$1" = -v ]; then
-		echo >&2 "***"
-		echo >&2 "*** Rust bindings generator '$BINDGEN' is too old."
-		echo >&2 "***   Your version:    $rust_bindings_generator_version"
-		echo >&2 "***   Minimum version: $rust_bindings_generator_min_version"
-		echo >&2 "***"
-	fi
+	echo >&2 "***"
+	echo >&2 "*** Rust bindings generator '$BINDGEN' is too old."
+	echo >&2 "***   Your version:    $rust_bindings_generator_version"
+	echo >&2 "***   Minimum version: $rust_bindings_generator_min_version"
+	echo >&2 "***"
 	exit 1
 fi
-if [ "$1" = -v ] && [ "$rust_bindings_generator_cversion" -gt "$rust_bindings_generator_min_cversion" ]; then
+if [ "$rust_bindings_generator_cversion" -gt "$rust_bindings_generator_min_cversion" ]; then
 	echo >&2 "***"
 	echo >&2 "*** Rust bindings generator '$BINDGEN' is too new. This may or may not work."
 	echo >&2 "***   Your version:     $rust_bindings_generator_version"
@@ -110,13 +100,11 @@ bindgen_libclang_min_version=$($min_tool_version llvm)
 bindgen_libclang_cversion=$(get_canonical_version $bindgen_libclang_version)
 bindgen_libclang_min_cversion=$(get_canonical_version $bindgen_libclang_min_version)
 if [ "$bindgen_libclang_cversion" -lt "$bindgen_libclang_min_cversion" ]; then
-	if [ "$1" = -v ]; then
-		echo >&2 "***"
-		echo >&2 "*** libclang (used by the Rust bindings generator '$BINDGEN') is too old."
-		echo >&2 "***   Your version:    $bindgen_libclang_version"
-		echo >&2 "***   Minimum version: $bindgen_libclang_min_version"
-		echo >&2 "***"
-	fi
+	echo >&2 "***"
+	echo >&2 "*** libclang (used by the Rust bindings generator '$BINDGEN') is too old."
+	echo >&2 "***   Your version:    $bindgen_libclang_version"
+	echo >&2 "***   Minimum version: $bindgen_libclang_min_version"
+	echo >&2 "***"
 	exit 1
 fi
 
@@ -125,21 +113,19 @@ fi
 #
 # In the future, we might be able to perform a full version check, see
 # https://github.com/rust-lang/rust-bindgen/issues/2138.
-if [ "$1" = -v ]; then
-	cc_name=$($(dirname $0)/cc-version.sh "$CC" | cut -f1 -d' ')
-	if [ "$cc_name" = Clang ]; then
-		clang_version=$( \
-			LC_ALL=C "$CC" --version 2>/dev/null \
-				| sed -nE '1s:.*version ([0-9]+\.[0-9]+\.[0-9]+).*:\1:p'
-		)
-		if [ "$clang_version" != "$bindgen_libclang_version" ]; then
-			echo >&2 "***"
-			echo >&2 "*** libclang (used by the Rust bindings generator '$BINDGEN')"
-			echo >&2 "*** version does not match Clang's. This may be a problem."
-			echo >&2 "***   libclang version: $bindgen_libclang_version"
-			echo >&2 "***   Clang version:    $clang_version"
-			echo >&2 "***"
-		fi
+cc_name=$($(dirname $0)/cc-version.sh "$CC" | cut -f1 -d' ')
+if [ "$cc_name" = Clang ]; then
+	clang_version=$( \
+		LC_ALL=C "$CC" --version 2>/dev/null \
+			| sed -nE '1s:.*version ([0-9]+\.[0-9]+\.[0-9]+).*:\1:p'
+	)
+	if [ "$clang_version" != "$bindgen_libclang_version" ]; then
+		echo >&2 "***"
+		echo >&2 "*** libclang (used by the Rust bindings generator '$BINDGEN')"
+		echo >&2 "*** version does not match Clang's. This may be a problem."
+		echo >&2 "***   libclang version: $bindgen_libclang_version"
+		echo >&2 "***   Clang version:    $clang_version"
+		echo >&2 "***"
 	fi
 fi
 
@@ -150,11 +136,9 @@ rustc_sysroot=$("$RUSTC" $KRUSTFLAGS --print sysroot)
 rustc_src=${RUST_LIB_SRC:-"$rustc_sysroot/lib/rustlib/src/rust/library"}
 rustc_src_core="$rustc_src/core/src/lib.rs"
 if [ ! -e "$rustc_src_core" ]; then
-	if [ "$1" = -v ]; then
-		echo >&2 "***"
-		echo >&2 "*** Source code for the 'core' standard library could not be found"
-		echo >&2 "*** at '$rustc_src_core'."
-		echo >&2 "***"
-	fi
+	echo >&2 "***"
+	echo >&2 "*** Source code for the 'core' standard library could not be found"
+	echo >&2 "*** at '$rustc_src_core'."
+	echo >&2 "***"
 	exit 1
 fi
-- 
2.34.1