How to get a release build with debugging information when using cargo?
Another option that I found that does not require changing Cargo.toml
is to use the RUSTFLAGS
environment variable:
$ RUSTFLAGS=-g cargo build --release
As of Rust 1.57, Cargo now allows for custom profiles. This allows you to define your own profile that adds debug information:
[profile.release-with-debug]
inherits = "release"
debug = true
You can then use that profile when building:
% cargo build --profile=release-with-debug
Compiling buggin v0.1.0 (/tmp/buggin)
Finished release-with-debug [optimized + debuginfo] target(s) in 0.48s
Prior to this version, or if you always wanted to have debugging information, you can modify the release
profile to include debugging symbols:
[profile.release]
debug = true
Note that the release
profile and the bench
profile differ.
See also
- Can tests be built in release mode using Cargo?
- How to compile and run an optimized Rust program with overflow checking enabled
- Does Cargo support custom profiles?
Or basically any of the top search results for "rust profiling":
- Rust Profiling with Instruments and FlameGraph on OSX: CPU/Time
- Profiling Rust applications on Linux
- Profiling rust code with callgrind