xmosdfu: Linux and Raspberry Pi build instructions

doc_dfu/building_xmos_dfu.rst

@@ -1,7 +1,7 @@
 .. _usb_audiosec_building_xmos_dfu:
 
-Building the XMOS DFU loader - macOS
-====================================
+Building the XMOS DFU loader
+============================
 
 The XMOS DFU loader is provided as source as part of the USB Audio
 framework, located in lib_xua/host/xmosdfu.
@@ -9,10 +9,33 @@ framework, located in lib_xua/host/xmosdfu.
 The loader is compiled using libusb, the code for the loader is contained in the
 file ``xmosdfu.cpp``
 
+macOS
+-----
+
 To build the loader a Makefile is provided, which can be run as follows:
 
-  ``make -f Makefile.OSX all``
+  ``make -f Makefile.OSX64 all``
 
 This Makefile contains the following:
 
-.. literalinclude:: Makefile.OSX
+.. literalinclude:: Makefile.OSX64
+
+There is also a 32bit OS X makefile, ``Makefile.OSX32``.
+
+Linux
+-----
+
+Similarly to macOS, there are two Linux makefiles provided, ``Makefile.Linux32`` and ``Makefile.Linux64``:
+
+.. literalinclude:: Makefile.Linux64
+
+System-wide libusb is used. On Debian-derived systems this can be installed with:
+
+  ``apt-get install libusb-1.0.0-dev``
+
+Raspberry Pi
+------------
+
+A makefile is provided for Raspbian. libusb is required and can be installed using the ``apt-get`` command from previous Linux section.
+
+.. literalinclude:: Makefile.Pi

doc_dfu/index.rst

@@ -7,4 +7,4 @@ DFU loader for XMOS USB AUDIO devices
     Creating factory and upgrade images with XFLASH <factory_image>
     Using the DFU loader - Windows (via the Thesycon driver) <thesycon_dfu>
     Using the DFU loader - macOS (via the XMOS DFU loader) <xmos_dfu>
-    Building the XMOS DFU loader - macOS <building_xmos_dfu>
+    Building the XMOS DFU loader <building_xmos_dfu>