remap-path-scope
The tracking issue for this feature is: #111540.
When the --remap-path-prefix option is passed to rustc, source path prefixes in all output will be affected by default.
The --remap-path-scope argument can be used in conjunction with --remap-path-prefix to determine paths in which output context should be affected.
This flag accepts a comma-separated list of values and may be specified multiple times, in which case the scopes are aggregated together. The valid scopes are:
- macro- apply remappings to the expansion of- std::file!()macro. This is where paths in embedded panic messages come from
- diagnostics- apply remappings to printed compiler diagnostics
- unsplit-debuginfo- apply remappings to debug information only when they are written to compiled executables or libraries, but not when they are in split debuginfo files
- split-debuginfo- apply remappings to debug information only when they are written to split debug information files, but not in compiled executables or libraries
- split-debuginfo-path- apply remappings to the paths pointing to split debug information files. Does nothing when these files are not generated.
- object- an alias for- macro,unsplit-debuginfo,split-debuginfo-path. This ensures all paths in compiled executables or libraries are remapped, but not elsewhere.
- alland- true- an alias for all of the above, also equivalent to supplying only- --remap-path-prefixwithout- --remap-path-scope.
Example
# This would produce an absolute path to main.rs in build outputs of
# "./main.rs".
rustc --remap-path-prefix=$(PWD)=/remapped -Zremap-path-prefix=object main.rs