From 68cd3c8821aa8d099032feda726bbeacc13177de Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juhani=20Krekel=C3=A4?= <juhani@krekelä.fi>
Date: Mon, 28 Jun 2021 23:00:50 +0300
Subject: [PATCH] Automatically track dependencies

---
 .gitignore | 1 +
 Makefile   | 5 ++++-
 empty.d    | 1 +
 3 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 empty.d

diff --git a/.gitignore b/.gitignore
index 7cf5001..c28b10e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.bin
 *.img
+*.d
diff --git a/Makefile b/Makefile
index b7c94c3..98490f7 100644
--- a/Makefile
+++ b/Makefile
@@ -11,11 +11,14 @@ nor86.img: bootsector.bin kernel.bin
 
 .asm.bin:
 	nasm -fbin -o $@ $<
+	nasm -MD $@.d -fbin -o $@ $<
 
 clean:
-	rm -f *.bin *.img
+	rm -f *.bin *.img *.bin.d
 
 run: nor86.img
 	qemu-system-i386 -fda $<
 
 .PHONY: all clean run
+
+include *.d
diff --git a/empty.d b/empty.d
new file mode 100644
index 0000000..143aae6
--- /dev/null
+++ b/empty.d
@@ -0,0 +1 @@
+# This file is needed so that initial make invocation will work