src/development/dynmake.sh: Base tool to do dynamic Makefiles without proprietary $(wildcard ...) add-ons

1 files changed, 72 insertions, 0 deletions

diff --git a/src/development/dynmake.sh b/src/development/dynmake.sh
new file mode 100755
index 0000000..3f173da
--- /dev/null
+++ b/src/development/dynmake.sh
@@ -0,0 +1,72 @@
+#!/bin/sh
+set -eu
+
+usage() {
+	cat <<-'EOF'
+		Usage:
+		  dynmake.sh -n VARNAME -d DIR
+		  dynmake.sh -h
+	EOF
+}
+
+help() {
+	cat <<-'EOF'
+
+		Options:
+		  -h, --help    show this message
+	EOF
+}
+
+for flag in "$@"; do
+	case "$flag" in
+		--)
+			break
+			;;
+		--help)
+			usage
+			help
+			exit
+			;;
+		*)
+			;;
+	esac
+done
+
+while getopts 'd:n:h' flag; do
+	case "$flag" in
+		d)
+			DIR="$OPTARG"
+			;;
+		n)
+			NAME="$OPTARG"
+			;;
+		h)
+			usage
+			help
+			exit
+			;;
+		*)
+			usage >&2
+			exit 2
+			;;
+	esac
+done
+shift $((OPTIND - 1))
+
+assert_arg() {
+	if [ -z "$1" ]; then
+		printf 'Missing %s.' "$2" >&2
+		exit 2
+	fi
+}
+
+assert_arg "${DIR:-}"  '-d DIR'
+assert_arg "${NAME:-}" '-n NAME'
+
+
+
+printf '%s = \\\n' "$NAME"
+find "$DIR" -type f |
+	sed -e 's/^/	/' \
+	    -e 's/$/ \\/'
+printf '\n'