Auto merge of #128361 - Oneirical:testle-deforestation, r=jieyouxu · rust-lang/rust@fd8d6fb (original) (raw)
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// The #[link(cfg(..))] annotation means that the #[link]
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// directive is only active in a compilation unit if that cfg value is satisfied.
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// For example, when compiling an rlib, these directives are just encoded and
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// ignored for dylibs, and all staticlibs are continued to be put into the rlib as
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// usual. When placing that rlib into a staticlib, executable, or dylib, however,
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// the cfg is evaluated as if it were defined in the final artifact and the
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// library is decided to be linked or not.
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// This test exercises this new feature by testing it with no dependencies, then
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// with only dynamic libraries, then with both a staticlib and dylibs. Compilation
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// and execution should be successful.
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// See https://github.com/rust-lang/rust/pull/37545
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//@ ignore-cross-compile
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// Reason: the compiled binary is executed
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use run_make_support::{bare_rustc, build_native_dynamic_lib, build_native_static_lib, run, rustc};
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fn main() {
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build_native_dynamic_lib("return1");
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build_native_dynamic_lib("return2");
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build_native_static_lib("return3");
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bare_rustc()
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.print("cfg")
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.target("x86_64-unknown-linux-musl")
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.run()
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.assert_stdout_contains("crt-static");
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rustc().input("no-deps.rs").cfg("foo").run();
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run("no-deps");
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rustc().input("no-deps.rs").cfg("bar").run();
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run("no-deps");
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rustc().input("dep.rs").run();
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rustc().input("with-deps.rs").cfg("foo").run();
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run("with-deps");
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rustc().input("with-deps.rs").cfg("bar").run();
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run("with-deps");
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rustc().input("dep-with-staticlib.rs").run();
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rustc().input("with-staticlib-deps.rs").cfg("foo").run();
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run("with-staticlib-deps");
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rustc().input("with-staticlib-deps.rs").cfg("bar").run();
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run("with-staticlib-deps");
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}
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