diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/librustc_llvm/ffi.rs | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/src/librustc_llvm/ffi.rs b/src/librustc_llvm/ffi.rs index dd64d76bc0c..1c2fa1bbb48 100644 --- a/src/librustc_llvm/ffi.rs +++ b/src/librustc_llvm/ffi.rs @@ -505,17 +505,13 @@ pub mod debuginfo { pub enum ModuleBuffer {} -// Link to our native llvm bindings (things that we need to use the C++ api -// for) and because llvm is written in C++ we need to link against libstdc++ -// -// You'll probably notice that there is an omission of all LLVM libraries -// from this location. This is because the set of LLVM libraries that we -// link to is mostly defined by LLVM, and the `llvm-config` tool is used to -// figure out the exact set of libraries. To do this, the build system -// generates an llvmdeps.rs file next to this one which will be -// automatically updated whenever LLVM is updated to include an up-to-date -// set of the libraries we need to link to LLVM for. -#[link(name = "rustllvm", kind = "static")] // not quite true but good enough +// This annotation is primarily needed for MSVC where attributes like +// dllimport/dllexport are applied and need to be correct for everything to +// link successfully. The #[link] annotation here says "these symbols are +// included statically" which means that they're all exported with dllexport +// and from the rustc_llvm dynamic library. Otherwise the rustc_trans dynamic +// library would not be able to access these symbols. +#[link(name = "rustllvm", kind = "static")] extern "C" { // Create and destroy contexts. pub fn LLVMContextCreate() -> ContextRef; |