Documenting the force non-cc option

aytey · aytey · commit d3c2c91583cb · 2020-11-03T11:21:47.000Z
Signed-off-by: Andrew V. Jones &lt;andrew.jones@vector.com&gt;
diff --git a/README.rst b/README.rst
@@ -32,6 +32,12 @@ in ``CMakeLists.txt`` as above or on the CMake command line like so::
 
     cmake -DMICROCHIP_MCU=PIC24FJ256GB004 .
 
+If you wish to use the 'legacy' xc8 compiler (`xc8`) over the `clang`-based
+version (`xc8-cc`), this can be achieved by telling CMake to 'force' the use of
+non-`cc` version::
+
+    cmake -DMICROCHIP_XC8_FORCE_NON_CC:BOOL=ON .
+
 Copying
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