diff options
| -rw-r--r-- | src/bootstrap/src/core/build_steps/compile.rs | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs index 99ddf58104c..4ab4e60773f 100644 --- a/src/bootstrap/src/core/build_steps/compile.rs +++ b/src/bootstrap/src/core/build_steps/compile.rs @@ -1056,6 +1056,14 @@ pub fn rustc_cargo( cargo.rustflag("-l").rustflag("Enzyme-19"); } + // Building with protected visibility reduces the number of dynamic relocations needed, giving + // us a faster startup time. However GNU ld < 2.40 will error if we try to link a shared object + // with direct references to protected symbols, so for now we only use protected symbols if + // linking with LLD is enabled. + if builder.build.config.lld_mode.is_used() { + cargo.rustflag("-Zdefault-visibility=protected"); + } + // We currently don't support cross-crate LTO in stage0. This also isn't hugely necessary // and may just be a time sink. if compiler.stage != 0 { |