Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 91 insertions, 0 deletions

diff --git a/compiler/rustc_target/src/spec/windows_gnu_base.rs b/compiler/rustc_target/src/spec/windows_gnu_base.rs
new file mode 100644
index 000000000..90e0af3e3
--- /dev/null
+++ b/compiler/rustc_target/src/spec/windows_gnu_base.rs
@@ -0,0 +1,91 @@
+use crate::spec::crt_objects::{self, CrtObjectsFallback};
+use crate::spec::{cvs, LinkerFlavor, TargetOptions};
+
+pub fn opts() -> TargetOptions {
+    let mut pre_link_args = TargetOptions::link_args(
+        LinkerFlavor::Ld,
+        &[
+            // Enable ASLR
+            "--dynamicbase",
+            // ASLR will rebase it anyway so leaving that option enabled only leads to confusion
+            "--disable-auto-image-base",
+        ],
+    );
+    super::add_link_args(
+        &mut pre_link_args,
+        LinkerFlavor::Gcc,
+        &[
+            // Tell GCC to avoid linker plugins, because we are not bundling
+            // them with Windows installer, and Rust does its own LTO anyways.
+            "-fno-use-linker-plugin",
+            "-Wl,--dynamicbase",
+            "-Wl,--disable-auto-image-base",
+        ],
+    );
+
+    // Order of `late_link_args*` was found through trial and error to work with various
+    // mingw-w64 versions (not tested on the CI). It's expected to change from time to time.
+    let mingw_libs = &[
+        "-lmsvcrt",
+        "-lmingwex",
+        "-lmingw32",
+        "-lgcc", // alas, mingw* libraries above depend on libgcc
+        // mingw's msvcrt is a weird hybrid import library and static library.
+        // And it seems that the linker fails to use import symbols from msvcrt
+        // that are required from functions in msvcrt in certain cases. For example
+        // `_fmode` that is used by an implementation of `__p__fmode` in x86_64.
+        // The library is purposely listed twice to fix that.
+        //
+        // See https://github.com/rust-lang/rust/pull/47483 for some more details.
+        "-lmsvcrt",
+        "-luser32",
+        "-lkernel32",
+    ];
+    let mut late_link_args = TargetOptions::link_args(LinkerFlavor::Ld, mingw_libs);
+    super::add_link_args(&mut late_link_args, LinkerFlavor::Gcc, mingw_libs);
+    // If any of our crates are dynamically linked then we need to use
+    // the shared libgcc_s-dw2-1.dll. This is required to support
+    // unwinding across DLL boundaries.
+    let dynamic_unwind_libs = &["-lgcc_s"];
+    let mut late_link_args_dynamic =
+        TargetOptions::link_args(LinkerFlavor::Ld, dynamic_unwind_libs);
+    super::add_link_args(&mut late_link_args_dynamic, LinkerFlavor::Gcc, dynamic_unwind_libs);
+    // If all of our crates are statically linked then we can get away
+    // with statically linking the libgcc unwinding code. This allows
+    // binaries to be redistributed without the libgcc_s-dw2-1.dll
+    // dependency, but unfortunately break unwinding across DLL
+    // boundaries when unwinding across FFI boundaries.
+    let static_unwind_libs = &["-lgcc_eh", "-l:libpthread.a"];
+    let mut late_link_args_static = TargetOptions::link_args(LinkerFlavor::Ld, static_unwind_libs);
+    super::add_link_args(&mut late_link_args_static, LinkerFlavor::Gcc, static_unwind_libs);
+
+    TargetOptions {
+        os: "windows".into(),
+        env: "gnu".into(),
+        vendor: "pc".into(),
+        // FIXME(#13846) this should be enabled for windows
+        function_sections: false,
+        linker: Some("gcc".into()),
+        dynamic_linking: true,
+        dll_prefix: "".into(),
+        dll_suffix: ".dll".into(),
+        exe_suffix: ".exe".into(),
+        families: cvs!["windows"],
+        is_like_windows: true,
+        allows_weak_linkage: false,
+        pre_link_args,
+        pre_link_objects: crt_objects::pre_mingw(),
+        post_link_objects: crt_objects::post_mingw(),
+        pre_link_objects_fallback: crt_objects::pre_mingw_fallback(),
+        post_link_objects_fallback: crt_objects::post_mingw_fallback(),
+        crt_objects_fallback: Some(CrtObjectsFallback::Mingw),
+        late_link_args,
+        late_link_args_dynamic,
+        late_link_args_static,
+        abi_return_struct_as_int: true,
+        emit_debug_gdb_scripts: false,
+        requires_uwtable: true,
+        eh_frame_header: false,
+        ..Default::default()
+    }
+}