New formula: libusbx 1.0.14

Added homebrew formula for the popular user-space USB library, libusbx 1.0.14

Closes #17186.
Closes #18452.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Library/Formula/libusb.rb

@@ -7,6 +7,9 @@ class Libusb < Formula
 
   head 'git://git.libusb.org/libusb.git'
 
+  conflicts_with 'libusb',
+    :because => 'both provide libusb compatible libraries'
+
   if build.head?
     depends_on :automake
     depends_on :libtool

Library/Formula/libusbx.rb

@@ -0,0 +1,31 @@
+require 'formula'
+
+class Libusbx < Formula
+  homepage 'http://libusbx.org'
+  url 'http://downloads.sourceforge.net/project/libusbx/releases/1.0.14/source/libusbx-1.0.14.tar.bz2'
+  sha1 '2896201c54a0a9d0aee724925ab58c96956d5251'
+
+  head 'https://github.com/libusbx/libusbx.git'
+
+  conflicts_with 'libusb',
+    :because => 'both provide libusb compatible libraries'
+
+  if build.head?
+    depends_on :automake
+    depends_on :libtool
+  end
+
+  option :universal
+  option 'no-runtime-logging', 'Build without runtime logging functionality'
+  option 'with-default-log-level-debug' 'Build with default runtime log level of debug (instead of none)'
+
+  def install
+    ENV.universal_binary if build.universal?
+    system "./autogen.sh" if build.head?
+    args = %W[--disable-dependency-tracking --prefix=#{prefix}]
+    args << "--disable-log" if build.include? 'no-runtime-logging'
+    args << "--enable-debug-log" if build.include? 'with-default-log-level-debug'
+    system "./configure", *args
+    system "make install"
+  end
+end