Re: 5.10 build issue creating library for driver support.

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The problem is: No rule to make target '/path/to/sourcefile.o', needed
by '/path/to/lib.a' Stop

I now know it's related to sourcefile being a .cpp file.  I've looked
for differences between 5.4.x and 5.10.x and didn't see any.  Note I
have this in my make file that seems to be ignored which is the
problem:

# pattern for compiling the c++ parts
%.o: %.cpp $(FLAGS)
$(info doing [$@])
$(Q)g++ `cat $(FLAGS)` $(CC_FLAGS) -fno-exceptions -fno-rtti -Wall -c -o $@ $<

UPDATE: Found the problem.  Removing the $(FLAGS) from the first line fixed it:

# pattern for compiling the c++ parts
%.o: %.cpp
$(info doing [$@])
$(Q)g++ `cat $(FLAGS)` $(CC_FLAGS) -fno-exceptions -fno-rtti -Wall -c -o $@ $<



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