Turning off whole-module optimization not (fully) supported? #903
Description
My project is blocked by an apparent whole-module optimization buh. I am unable to work around it by turning off whole-module optimization because swift-llbuild complains of a missing dependencies file.
Reproducer:
swift package init --type executable- add
swiftSettings: [.unsafeFlags(["-no-whole-module-optimization"])]to the executable target swift build -c release
This problem could be worked around in the compiler, in swift-llbuild, or in the driver by separately issuing the build command without -no-whole-module-optimization included, which generates the needed dependencies file. I am filing issues against all three projects in the hopes that the maintainers can agree on a possible solution.