implemented ability to enable -D_FF_RV_EXIST_ in TIF library It is not clear if this quirk is intentional or not, but TI's production version of tif_na7_db_{fl,ir}.lib was built without -D_FF_RV_EXIST_, and as a result, the code that is present in the source for the TRACEMASK_IN_FFS feature was not compiled in, making the feature unavailable. The present change makes it possible to re-enable this code (when TIF libraries are being rebuilt from source rather than used as blobs) by setting TRACEMASK_IN_FFS=1 on the configure line. The new code is NOT enabled by default: it is not a change which we can justify inflicting on our production firmwares.

--- a/components/tif_na7_db_ir	Sat Nov 17 19:57:34 2018 +0000
+++ b/components/tif_na7_db_ir	Sun Nov 18 08:09:17 2018 +0000
@@ -7,6 +7,11 @@
 CPPFLAGS="-DNU_DEBUG -DRUN_INT_RAM"
 CPPFLAGS="$CPPFLAGS -D_TARGET_ -D_NUCLEUS_"
 
+if [ "$TRACEMASK_IN_FFS" = 1 ]
+then
+	CPPFLAGS="$CPPFLAGS -D_FF_RV_EXIST_"
+fi
+
 # Includes
 
 CPPFLAGS="$CPPFLAGS -I$SRC/$GPF/inc/nuc"