diff --git a/.gitignore b/.gitignore
index 3350f26..42d62d2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -51,54 +51,3 @@ modules.order
 Module.symvers
 Mkfile.old
 dkms.conf
-
-## AUTOTOOLS
-# http://www.gnu.org/software/automake
-
-Makefile.in
-/ar-lib
-/mdate-sh
-/py-compile
-/test-driver
-/ylwrap
-
-# http://www.gnu.org/software/autoconf
-
-autom4te.cache
-/autoscan.log
-/autoscan-*.log
-/aclocal.m4
-/compile
-/config.guess
-/config.h.in
-/config.log
-/config.status
-/config.sub
-/configure
-/configure.scan
-/depcomp
-/install-sh
-/missing
-/stamp-h1
-
-# https://www.gnu.org/software/libtool/
-
-/ltmain.sh
-
-# http://www.gnu.org/software/texinfo
-
-/texinfo.tex
-
-# http://www.gnu.org/software/m4/
-
-m4/libtool.m4
-m4/ltoptions.m4
-m4/ltsugar.m4
-m4/ltversion.m4
-m4/lt~obsolete.m4
-
-# Generated Makefile
-# (meta build system like autotools,
-# can automatically generate from config.status script
-# (which is called by configure script))
-Makefile
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..bbd7287
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,13 @@
+CC=	cc
+CFLAGS=	-O
+RM=	rm -f
+SHELL=	/bin/sh
+
+all: sendwol
+
+sendwol: sendwol.c
+	$(CC) $(CFLAGS) -o sendwol sendwol.c
+
+.PHONY: clean
+clean:
+	$(RM) sendwol
diff --git a/README.md b/README.md
index f2ebb9d..f7e7264 100644
--- a/README.md
+++ b/README.md
@@ -17,47 +17,9 @@ Multicast to all link-local nodes on IPv4:
 More details, refer the man page.
 
 ```console
-% man ./sendwol.1	# instantly
-% man sendwol		# after installation
+% man ./sendwol.1
 ```
 
-
-## Installation
-
-1. Download the tarball from [releases page][].
-
-2. Extract them.
-	```console
-	% tar xvf sendwol-*.**.tar.gz
-	```
-
-3. Change the working directory.
-	```console
-	% cd sendwol-*/.
-	```
-
-4. Generate `Makefile`.
-	```console
-	% ./configure
-	```
-
-5. Build the binary.
-	```console
-	% make
-	```
-
-6. Install them.
-	```console
-	% make install
-	```
-
-## Uninstallation
-
-```console
-% make uninstall
-```
-
-
 ## License
 
 The 2-Clause BSD License