Merge pull request #33 from darander/autotools

Fix issue #32: libusb

INSTALL

@@ -44,6 +44,7 @@ Step1: Build libusbx-1.0.18
 Building:
 
  $ cd libusbx-1.0.18
+ $ ./autogen.sh
  $ ./configure
  $ make
  $ sudo make install

libusbx-1.0.18/autogen.sh

+#!/bin/sh
+##
+## This file is part of the libsigrok project.
+##
+## Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+##
+
+OS=`uname`
+
+LIBTOOLIZE=libtoolize
+ACLOCAL_DIR=
+
+if [ "x$OS" = "xDarwin" ]; then
+	LIBTOOLIZE=glibtoolize
+
+	if [ -d /sw/share/aclocal ]; then
+		# fink installs aclocal macros here
+		ACLOCAL_DIR="-I /sw/share/aclocal"
+	elif [ -d /opt/local/share/aclocal ]; then
+		# Macports installs aclocal macros here
+		ACLOCAL_DIR="-I /opt/local/share/aclocal"
+	elif [ -d /usr/local/share/aclocal ]; then
+		# Homebrew installs aclocal macros here
+		ACLOCAL_DIR="-I /usr/local/share/aclocal"
+	elif [ -d /usr/share/aclocal ]; then
+		# Xcode installs aclocal macros here
+		ACLOCAL_DIR="-I /usr/share/aclocal"
+	fi
+
+elif [ "x$OS" = "xMINGW32_NT-5.1" ]; then
+	# Windows XP
+	ACLOCAL_DIR="-I /usr/local/share/aclocal"
+elif [ "x$OS" = "xMINGW32_NT-6.0" ]; then
+	# Windows Vista
+	ACLOCAL_DIR="-I /usr/local/share/aclocal"
+elif [ "x$OS" = "xMINGW32_NT-6.1" ]; then
+	# Windows 7
+	ACLOCAL_DIR="-I /usr/local/share/aclocal"
+fi
+
+echo "Generating build system..."
+${LIBTOOLIZE} --install --copy --quiet || exit 1
+aclocal ${ACLOCAL_DIR} || exit 1
+autoheader || exit 1
+automake --add-missing --copy || exit 1
+autoconf || exit 1
+