From 7739d1863cb6ea5de819e1ae1c1ee10e8109d32b Mon Sep 17 00:00:00 2001
From: "Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>
Date: Tue, 21 Apr 2020 23:10:07 -0400
Subject: POSIXify, add docs, other changes

---
 Makefile | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 6832bbd..3a2f16b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,24 +1,27 @@
-CC = gcc
-CFLAGS ?= -O2 -pipe
-MAKEFLAGS += -L -R -r
-
 all: initramfs.img
 
-initramfs.img: gen_init_cpio
+initramfs.img: gen_init_cpio dropbear_rsa_host_key dropbear_ecdsa_host_key
 	./make
 
--include initramfs.d
-
 gen_init_cpio: gen_init_cpio.c
-	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
+	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) gen_init_cpio.c -o $@
+
+dropbear_rsa_host_key:
+	dropbearkey -t rsa -f $@
+
+dropbear_ecdsa_host_key:
+	dropbearkey -t ecdsa -f $@
 
 install: initramfs.img
-	rm -f /boot/$<.old /boot/$<.new
-	cp $< /boot/$<.new || rm -f /boot/$<.new
-	if [ -e /boot/$< ]; then mv /boot/$< /boot/$<.old; fi
-	mv /boot/$<.new /boot/$<
+	rm -f /boot/initramfs.img.old /boot/initramfs.img.new
+	cp initramfs.img /boot/initramfs.img.new || rm -f /boot/initramfs.img.new
+	if [ -e /boot/initramfs.img ]; then mv /boot/initramfs.img /boot/initramfs.img.old; fi
+	mv /boot/initramfs.img.new /boot/initramfs.img
 
 clean:
-	rm -f -r initramfs.img initramfs.d gen_init_cpio
+	rm -f initramfs.img initramfs.d gen_init_cpio
+
+-include initramfs.d
 
 .PHONY: all install clean
+MAKEFLAGS += -r # slightly faster
-- 
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