We are using CMake build system to generate the command-line options and run PC-Lint. The command line options are generated after the configuration stage of CMake and it can happen that the value of a define is not known yet at that stage:

$<$<BOOL:OFF>:BUILD_TESTS>

If BUILD_TESTS is disabled, the command line option will be empty:

-d"$<$<BOOL:OFF>:BUILD_TESTS>" gets converted to:
-d""

When you run pclp64 -d"" the following error appears:

--- Module: /projects/alpha/alpha.c (C)
<command line option> 1 error 5469: macro name must be an identifier

#define 1

My request is to check if -d argument is empty, and if it's empty to just ignore it instead of evaluating it to "#define 1"