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| author | Alex Crichton <alex@alexcrichton.com> | 2018-09-29 11:03:59 -0700 |
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| committer | Alex Crichton <alex@alexcrichton.com> | 2018-09-29 11:03:59 -0700 |
| commit | 6f4b378e840209561f0ea1c013f9725b584a53e8 (patch) | |
| tree | 1b64dd8088918109091f22c9f02a3a08feab8428 /src/rustllvm/RustWrapper.cpp | |
| parent | 9653f790333d1270f36f1614e85d8a7b54193e75 (diff) | |
| download | rust-6f4b378e840209561f0ea1c013f9725b584a53e8.tar.gz rust-6f4b378e840209561f0ea1c013f9725b584a53e8.zip | |
rust: Add a `-C default-linker-libraries` option
This commit adds a new codegen option for the compiler which disables rustc's passing of `-nodefaultlibs` by default on relevant platforms. Sometimes Rust is linked with C code which fails to link with `-nodefaultlibs` and is unnecessarily onerous to get linking correctly with `-nodefaultlibs`. An example of this is that when you compile C code with sanitizers and then pass `-fsanitize=address` to the linker, it's incompatible with `-nodefaultlibs` also being passed to the linker. In these situations it's easiest to turn off Rust's default passing of `-nodefaultlibs`, which was more ideological to start with than anything! Preserving the default is somewhat important but having this be opt-in shouldn't cause any breakage. Closes #54237
Diffstat (limited to 'src/rustllvm/RustWrapper.cpp')
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