mirror of https://github.com/rust-lang/rust
53 lines
1.7 KiB
Rust
53 lines
1.7 KiB
Rust
//! This is a regression test for #129020
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//! It ensures we can use `/WHOLEARCHIVE` to link a rust staticlib into DLL
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//! using the MSVC linker
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//@ only-msvc
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// Reason: this is testing the MSVC linker
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use std::path::PathBuf;
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use run_make_support::{cc, cmd, env_var, extra_c_flags, rustc};
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fn main() {
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// Build the staticlib
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rustc().crate_type("staticlib").input("static.rs").output("static.lib").run();
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// Build an empty object to pass to the linker.
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cc().input("c.c").output("c.obj").args(["-c"]).run();
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// Find the C toolchain's linker.
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let mut linker = PathBuf::from(env_var("CC"));
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let linker_flavour = if linker.file_stem().is_some_and(|s| s == "cl") {
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linker.set_file_name("link.exe");
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"msvc"
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} else if linker.file_stem().is_some_and(|s| s == "clang-cl") {
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linker.set_file_name("lld-link.exe");
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"llvm"
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} else {
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panic!("unknown C toolchain");
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};
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// As a sanity check, make sure this works without /WHOLEARCHIVE.
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// Otherwise the actual test failure may be caused by something else.
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cmd(&linker)
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.args(["c.obj", "./static.lib", "-dll", "-def:dll.def", "-out:dll.dll"])
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.args(extra_c_flags())
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.run();
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// FIXME(@ChrisDenton): this doesn't currently work with llvm's lld-link for other reasons.
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// May need LLVM patches.
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if linker_flavour == "msvc" {
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// Link in the staticlib using `/WHOLEARCHIVE` and produce a DLL.
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cmd(&linker)
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.args([
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"c.obj",
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"-WHOLEARCHIVE:./static.lib",
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"-dll",
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"-def:dll.def",
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"-out:dll_whole_archive.dll",
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])
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.args(extra_c_flags())
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.run();
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}
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}
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