1 files changed, 77 insertions, 0 deletions
diff --git a/scripts/test_settings.sh b/scripts/test_settings.sh
new file mode 100755
index 000000000000..563dbf0e58f3
--- /dev/null
+++ b/scripts/test_settings.sh
@@ -0,0 +1,77 @@
+#! /bin/sh
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (c) 2018-2021 Gavin D. Howard and contributors.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice,
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+# This script's argument is a number, which is the index of the setting set
+# that is under test. This script is for maintainers only.
+#
+# The procedure is this: run the script with:
+#
+# ./scripts/test_settings.sh 1
+#
+# Then run bc and dc to ensure their stuff is correct. Then run this script
+# again with:
+#
+# ./scripts/test_settings.sh 2
+#
+# And repeat. You can also test various environment variable sets with them.
+
+# Print the usage and exit with an error.
+usage() {
+	printf 'usage: %s index\n' "$0" 1>&2
+	exit 1
+}
+
+script="$0"
+scriptdir=$(dirname "$script")
+
+cd "$scriptdir/.."
+
+test "$#" -eq 1 || usage
+
+target="$1"
+shift
+
+line=0
+
+# This loop just loops until it gets to the right line. Quick and dirty.
+while read s; do
+
+	line=$(printf '%s + 1\n' "$line" | bc)
+
+	if [ "$line" -eq "$target" ]; then
+
+		# Configure, build, and exit.
+		./configure.sh -O3 $s
+
+		make -j16 > /dev/null
+
+		exit
+	fi
+
+done < "$scriptdir/test_settings.txt"