How do I use an environment variable in the Xcode Scheme Arguments Passed On Launch window?

user_35690 0
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I'm trying to set up another Xcode project as the one passed on launch for the purposes of testing an Xcode extension:

enter image description here

Rather than hardcoding a path like this, I'd like to make it relative to the current directory.

I created a placeholder build script and output the environment variables. I found out that the current project directory can be accessed via the PROJECT_DIR environment variable.

How do I reference this environment variable in the Arguments Passed On Launch screen?

For example, instead of /Users/zoesmith/Desktop/Sample/TestableCode.xcodeproj, I'd like the path to be something like this instead:

PROJECT_DIR/../TestableCode.xcodeproj
xcode environment-variables
2 Answers

Looks like the following works:

"$(PROJECT_DIR)/../TestableCode.xcodeproj"

I think the quotes are required in case PROJECT_DIR has any spaces in it.

I'm not sure what the difference is between $PROJECT_DIR and $(PROJECT_DIR), but both seem to work.

user_356900

One additional hint for anyone having trouble getting this working: Make sure the Expand Variables Based On setting is not set to None.

enter image description here

user_8144160
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