1 files changed, 74 insertions, 0 deletions
diff --git a/scripts/lint-makefiles.sh b/scripts/lint-makefiles.sh
new file mode 100644
index 0000000000..0d202346bd
--- /dev/null
+++ b/scripts/lint-makefiles.sh
@@ -0,0 +1,74 @@
+#!/bin/bash
+# Copyright (C) 2023 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <https://www.gnu.org/licenses/>.
+
+# This script checks to see that all Makefiles in the source tree
+# conform to the sorted variable rules as defined by:
+# scripts/sort-makefile-lines.py.
+# Any difference is an error and should be corrected e.g. the lines
+# reordered to sort correctly.
+# The intent with this check is to ensure that changes made by
+# developers match the expected format for the project.
+
+export LC_ALL=C
+
+tmpfile="$(mktemp)"
+
+cleanup () {
+  rm -f -- "$tmpfile"
+}
+
+trap cleanup 0
+
+PYTHON=$1
+# Absolute or relative path to the source directory.
+srcdir=$2
+
+# Must specify $PYTHON.
+if [ -z "$PYTHON" ]; then
+  echo 'Please specify $PYTHON interpreter'
+  exit 1
+fi
+# Absolute or relative $srcdir must exist and be a directory.
+if [ ! -d "$srcdir" ]; then
+  echo 'Please specify $srcdir in which to look for Makefiles'
+  exit 1
+fi
+
+linted=0
+failed=0
+for mfile in `find "$srcdir" -name Makefile`; do
+    $PYTHON "${srcdir}/scripts/sort-makefile-lines.py" < "$mfile" > "$tmpfile"
+    # Printed the expected -> actual difference on error.
+    if ! diff -u --label "$mfile.expected" "$tmpfile" "$mfile"; then
+        failed=$((failed+1))
+    fi
+    linted=$((linted+1))
+done
+# Must have linted at least the top-level Makefile.
+if [ $linted -lt 1 ]; then
+  echo "Did not lint any Makefiles!"
+  exit 1
+fi
+if [ $failed -gt 0 ]; then
+  echo "---"
+  echo "Tested $linted Makefiles and $failed were incorrectly sorted"
+  echo 'Please use `patch -R -pN` and the output above to correct the sorting'
+  exit 1
+fi
+# All Makefiles linted clean.
+exit 0