feat: Subdir template added

A template for calling Makefiles in subdirectories has been added. This
allows a top directory makefile to list subdirectories and call rules
like all, clean, install, & uninstall.

12 files changed, 58 insertions, 0 deletions

diff --git a/example/Makefile b/example/Makefile
new file mode 100644
index 0000000..b0e81b3
--- /dev/null
+++ b/example/Makefile
@@ -0,0 +1,9 @@
+#
+# Copyright (c) 2026 Jacob McDonnell
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+SUBDIRS = libfib test
+
+include tools/mcd.subdir.mk
+
diff --git a/example/libfib/Makefile b/example/libfib/Makefile
index c610923..4df5255 100644
--- a/example/libfib/Makefile
+++ b/example/libfib/Makefile
@@ -1,3 +1,8 @@
+#
+# Copyright (c) 2026 Jacob McDonnell
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
 LIB         = fib
 SHLIB_MAJOR = 1
 SHLIB_MINOR = 1
diff --git a/example/libfib/fib.c b/example/libfib/fib.c
index 707215d..7520c97 100644
--- a/example/libfib/fib.c
+++ b/example/libfib/fib.c
@@ -1,3 +1,8 @@
+//
+// Copyright (c) 2026 Jacob McDonnell
+//
+// SPDX-License-Identifier: BSD-2-Clause
+//
 #include "fib.h"
 
 uint64_t fib(const uint64_t n) {
diff --git a/example/libfib/fib.h b/example/libfib/fib.h
index 66615c5..6556723 100644
--- a/example/libfib/fib.h
+++ b/example/libfib/fib.h
@@ -1,3 +1,8 @@
+//
+// Copyright (c) 2026 Jacob McDonnell
+//
+// SPDX-License-Identifier: BSD-2-Clause
+//
 #ifndef FIB_H_
 #define FIB_H_
 
diff --git a/example/libfib/fib.o b/example/libfib/fib.o
deleted file mode 100644
index 9380b6f..0000000
--- a/example/libfib/fib.o
+++ /dev/null
diff --git a/example/libfib/libfib.a b/example/libfib/libfib.a
deleted file mode 100644
index 1fe78c4..0000000
--- a/example/libfib/libfib.a
+++ /dev/null
diff --git a/example/libfib/libfib.so.1.1 b/example/libfib/libfib.so.1.1
deleted file mode 100755
index 2ed114c..0000000
--- a/example/libfib/libfib.so.1.1
+++ /dev/null
diff --git a/example/test/Makefile b/example/test/Makefile
index 5b29575..041722b 100644
--- a/example/test/Makefile
+++ b/example/test/Makefile
@@ -1,3 +1,8 @@
+#
+# Copyright (c) 2026 Jacob McDonnell
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
 PROG    = main
 SRCS    = main.c
 CFLAGS  = -Wall \
diff --git a/example/test/main.c b/example/test/main.c
index 9580704..b5a75b1 100644
--- a/example/test/main.c
+++ b/example/test/main.c
@@ -1,3 +1,8 @@
+//
+// Copyright (c) 2026 Jacob McDonnell
+//
+// SPDX-License-Identifier: BSD-2-Clause
+//
 #include <stdio.h>
 #include "fib.h"
 
diff --git a/mk/mcd.lib.mk b/mk/mcd.lib.mk
index 433e501..feebb88 100644
--- a/mk/mcd.lib.mk
+++ b/mk/mcd.lib.mk
@@ -1,3 +1,8 @@
+#
+# Copyright (c) 2026 Jacob McDonnell
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
 OBJS    = $(patsubst %.cxx, %.o, \
           $(patsubst %.cpp, %.o, \
           $(patsubst %.cc, %.o, \
diff --git a/mk/mcd.prog.mk b/mk/mcd.prog.mk
index 5ce212a..0c58ac3 100644
--- a/mk/mcd.prog.mk
+++ b/mk/mcd.prog.mk
@@ -1,3 +1,8 @@
+#
+# Copyright (c) 2026 Jacob McDonnell
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
 OBJS = $(patsubst %.cxx, %.o, \
        $(patsubst %.cpp, %.o, \
        $(patsubst %.cc, %.o, \
diff --git a/mk/mcd.subdir.mk b/mk/mcd.subdir.mk
new file mode 100644
index 0000000..1244ea8
--- /dev/null
+++ b/mk/mcd.subdir.mk
@@ -0,0 +1,14 @@
+#
+# Copyright (c) 2026 Jacob McDonnell
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+TARGETS = all clean install uninstall
+
+$(TARGETS): $(SUBDIRS)
+
+$(SUBDIRS):
+	$(MAKE) -C $@ $(MAKECMDGOALS)
+
+.PHONY: $(TARGETS) $(SUBDIRS)
+