cargo Add a warning when enabling LTO for crates with both cargo-types that support LTO and ones that don't.

Add a warning when enabling LTO for crates with both cargo-types that support LTO and ones that don't.

Open Lymia opened this issue 8 years ago • 3 comments

As discussed in #2301, cargo silently builds a cdylib without LTO when the same crate also has rlib outputs, as rustc would otherwise error.

The only sign this has happened currently is the output binaries being way larger than expected. A warning would be very helpful for this.

Oct 12 '17 14:10 Lymia