fix #13998

Author: ludviggunne

tools/update-simplecpp.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+set -e
+
+url="https://github.com/danmar/simplecpp"
+
+tag="$(git ls-remote --tags --sort=-v:refname  "$url" | head -1 | cut -f2)"
+[ -z "$tag" ] && exit 1
+
+echo "Latest tag is $tag"
+
+dest_dir="$(dirname "$(realpath "${BASH_SOURCE[@]}")")/../externals/simplecpp"
+files=("simplecpp.cpp" "simplecpp.h")
+
+for file in "${files[@]}"; do
+	curl -LO --output-dir "$dest_dir" "$url/$tag/$file"
+done