Add autotools configuration files to simplify cross-compilation

Upstream-Status: Submitted [https://github.com/sarfata/pi-blaster/pull/25]

Signed-off-by: Alex Lennon <ajlennon@dynamicdevices.co.uk>

diff -Nur git.org/Makefile git.new/Makefile
--- git.org/Makefile	2014-06-11 15:42:26.490930706 +0100
+++ git.new/Makefile	1970-01-01 01:00:00.000000000 +0100
@@ -1,23 +0,0 @@
-.PHONY: all
-all:	pi-blaster
-
-REVISION=$(shell egrep -q '000f$$' /proc/cpuinfo && echo 2 || echo 1)
-
-pi-blaster:	pi-blaster.c
-	gcc -Wall -g -O2 -o $@ $< -DREVISION=$(REVISION)
-
-clean:
-	rm -f pi-blaster
-
-install: pi-blaster
-	cp -f pi-blaster.boot.sh /etc/init.d/pi-blaster
-	chmod +x /etc/init.d/pi-blaster
-	cp -f pi-blaster /usr/sbin/pi-blaster
-	update-rc.d pi-blaster defaults
-	/etc/init.d/pi-blaster start
-	
-uninstall:
-	-/etc/init.d/pi-blaster stop
-	rm /usr/sbin/pi-blaster
-	rm /etc/init.d/pi-blaster
-	update-rc.d pi-blaster remove
diff -Nur git.org/Makefile.am git.new/Makefile.am
--- git.org/Makefile.am	1970-01-01 01:00:00.000000000 +0100
+++ git.new/Makefile.am	2014-06-11 15:40:16.562930372 +0100
@@ -0,0 +1,9 @@
+AUTOMAKE_OPTIONS = foreign
+
+CFLAGS = -Wall -pedantic
+
+sbin_PROGRAMS = pi-blaster
+pi_blaster_SOURCES = pi-blaster.c
+
+init_ddir = $(sysconfdir)/init.d
+init_d_SCRIPTS = pi-blaster.boot.sh
diff -Nur git.org/autogen.sh git.new/autogen.sh
--- git.org/autogen.sh	1970-01-01 01:00:00.000000000 +0100
+++ git.new/autogen.sh	2014-06-11 15:35:57.798929684 +0100
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+echo "Generating configure files... may take a while."
+
+autoreconf --install --force && \
+  echo "Preparing was successful if there was no error messages above." && \
+  echo "Now type:" && \
+  echo "  ./configure && make"  && \
+  echo "Run './configure --help' for more information"
diff -Nur git.org/configure.ac git.new/configure.ac
--- git.org/configure.ac	1970-01-01 01:00:00.000000000 +0100
+++ git.new/configure.ac	2014-06-11 15:35:53.154929717 +0100
@@ -0,0 +1,14 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.69])
+AC_INIT(pi-blaster, 0.1.0)
+AC_CONFIG_SRCDIR([pi-blaster.c])
+AC_CONFIG_HEADERS([config.h])
+AM_INIT_AUTOMAKE
+
+# Checks for programs.
+AC_PROG_CC
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT