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| author | Petr Hosek <phosek@google.com> | 2020-05-29 11:14:27 -0700 |
|---|---|---|
| committer | Petr Hosek <phosek@google.com> | 2020-05-29 11:34:41 -0700 |
| commit | 21abc8879cddd0002ca1da2eaa0f8e27ef09fa99 (patch) | |
| tree | c81496a205c8295470c11df3676345c4915c2ed1 /src | |
| parent | 96dd4690c3aa70ec312448c3f2d50e6dc6fb87df (diff) | |
| download | rust-21abc8879cddd0002ca1da2eaa0f8e27ef09fa99.tar.gz rust-21abc8879cddd0002ca1da2eaa0f8e27ef09fa99.zip | |
Make libunwind build hermetic
We want to avoid exporting any symbols from Rust's version of libunwind, and to do so we need to disable visibility annotations to make sure that the -fvisibility=hidden has effect, and also hide global new/delete. This matches the CMake build of libunwind.
Diffstat (limited to 'src')
| -rw-r--r-- | src/libunwind/build.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libunwind/build.rs b/src/libunwind/build.rs index 1462639259c..00749d93d55 100644 --- a/src/libunwind/build.rs +++ b/src/libunwind/build.rs @@ -90,6 +90,8 @@ mod llvm_libunwind { cfg.flag("-fstrict-aliasing"); cfg.flag("-funwind-tables"); cfg.flag("-fvisibility=hidden"); + cfg.flag_if_supported("-fvisibility-global-new-delete-hidden"); + cfg.define("_LIBUNWIND_DISABLE_VISIBILITY_ANNOTATIONS", None); } let mut unwind_sources = vec![ |