Let’s say one has a shell variable one wishes to be passed to the compiler – how would one go about accomplishing this?
I have a C++ project which defaults a path to a directory relative to the build directory. In the C++ case I solve this using the preprocessor and do something akin to
I’m thinking about porting this project to Rust and while I’m probably going to remove the default path feature completely, this problem made me randomly curious about the Rust case.
Apart from the obvious solutions of using
sed or generating a source file from scratch prior to calling
cargo build, is there an idiomatic way to get rust/cargo to do it as part of the build process?
Is this one of the things one would typically use