I'm writing a C program to be embedded in some new hardware. The model string is passed in with a gcc command-line parameter: gcc source.c -DMODEL_STRING='"XYZ-123"' -o source.o Yes, the quotes are kind of annoying, but it makes it easy for me to do: const char *ModelString=MODEL_STRING; Anyhow, I'd like to compile in certain parameters based on the model string. I know if the model was a number, I could do something like: #if MODEL_NUMBER==123 But is there a way to compare a string? I tried to do #if MODEL_STRING=="\"XYZ-123\"" But that gave me the following error: source.c:20:22: token ""\"XYZ-123\""" is not valid in preprocessor expressions Is there a way to do this? Is there a better way to do this than the simplistic method I've chosen? Is there a page out there on the web somewhere with some hints for hacks like this? Thanks in advance! Gre7g
