Auto merge of #62237 - Centril:rollup-nsrgek8, r=Centril

Rollup of 4 pull requests

Successful merges:

 - #60260 (Add support for UWP targets)
 - #62128 (Adjust warning of -C extra-filename with -o.)
 - #62153 (Update the `rust-installer` submodule)
 - #62224 (rustdoc: remove unused derives and variants)

Failed merges:

r? @ghost

Cargo.lock

@@ -1272,9 +1272,10 @@ name = "installer"
 version = "0.0.0"
 dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "flate2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tar 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)",

src/bootstrap/compile.rs

@@ -326,7 +326,7 @@ impl Step for StartupObjects {
     fn run(self, builder: &Builder<'_>) {
         let for_compiler = self.compiler;
         let target = self.target;
-        if !target.contains("pc-windows-gnu") {
+        if !target.contains("windows-gnu") {
             return
         }
 
@@ -1130,6 +1130,7 @@ pub fn run_cargo(builder: &Builder<'_>,
             // Skip files like executables
             if !filename.ends_with(".rlib") &&
                !filename.ends_with(".lib") &&
+               !filename.ends_with(".a") &&
                !is_dylib(&filename) &&
                !(is_check && filename.ends_with(".rmeta")) {
                 continue;

src/librustc_codegen_ssa/back/linker.rs

@@ -368,6 +368,26 @@ impl<'a> Linker for GccLinker<'a> {
             }
         } else {
             self.cmd.arg("-shared");
+            if self.sess.target.target.options.is_like_windows {
+                // The output filename already contains `dll_suffix` so
+                // the resulting import library will have a name in the
+                // form of libfoo.dll.a
+                let implib_name = out_filename
+                    .file_name()
+                    .and_then(|file| file.to_str())
+                    .map(|file| format!("{}{}{}",
+                         self.sess.target.target.options.staticlib_prefix,
+                         file,
+                         self.sess.target.target.options.staticlib_suffix));
+                if let Some(implib_name) = implib_name {
+                    let implib = out_filename
+                        .parent()
+                        .map(|dir| dir.join(&implib_name));
+                    if let Some(implib) = implib {
+                        self.linker_arg(&format!("--out-implib,{}", (*implib).to_str().unwrap()));
+                    }
+                }
+            }
         }
     }
 

src/librustc_interface/util.rs

@@ -642,14 +642,14 @@ pub fn build_output_filenames(
                 );
                 None
             } else {
+                if !sess.opts.cg.extra_filename.is_empty() {
+                    sess.warn("ignoring -C extra-filename flag due to -o flag");
+                }
                 Some(out_file.clone())
             };
             if *odir != None {
                 sess.warn("ignoring --out-dir flag due to -o flag");
             }
-            if !sess.opts.cg.extra_filename.is_empty() {
-                sess.warn("ignoring -C extra-filename flag due to -o flag");
-            }
 
             OutputFilenames {
                 out_directory: out_file.parent().unwrap_or_else(|| Path::new("")).to_path_buf(),

src/librustc_target/spec/i686_uwp_windows_gnu.rs

@@ -0,0 +1,27 @@
+use crate::spec::{LinkerFlavor, Target, TargetResult};
+
+pub fn target() -> TargetResult {
+    let mut base = super::windows_uwp_base::opts();
+    base.cpu = "pentium4".to_string();
+    base.max_atomic_width = Some(64);
+    base.eliminate_frame_pointer = false; // Required for backtraces
+
+    // Mark all dynamic libraries and executables as compatible with the larger 4GiB address
+    // space available to x86 Windows binaries on x86_64.
+    base.pre_link_args
+        .get_mut(&LinkerFlavor::Gcc).unwrap().push("-Wl,--large-address-aware".to_string());
+
+    Ok(Target {
+        llvm_target: "i686-pc-windows-gnu".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_width: "32".to_string(),
+        target_c_int_width: "32".to_string(),
+        data_layout: "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32".to_string(),
+        arch: "x86".to_string(),
+        target_os: "windows".to_string(),
+        target_env: "gnu".to_string(),
+        target_vendor: "uwp".to_string(),
+        linker_flavor: LinkerFlavor::Gcc,
+        options: base,
+    })
+}

src/librustc_target/spec/mod.rs

@@ -60,6 +60,7 @@ mod solaris_base;
 mod uefi_base;
 mod windows_base;
 mod windows_msvc_base;
+mod windows_uwp_base;
 mod thumb_base;
 mod l4re_base;
 mod fuchsia_base;
@@ -433,6 +434,8 @@ supported_targets! {
 
     ("x86_64-pc-windows-gnu", x86_64_pc_windows_gnu),
     ("i686-pc-windows-gnu", i686_pc_windows_gnu),
+    ("i686-uwp-windows-gnu", i686_uwp_windows_gnu),
+    ("x86_64-uwp-windows-gnu", x86_64_uwp_windows_gnu),
 
     ("aarch64-pc-windows-msvc", aarch64_pc_windows_msvc),
     ("x86_64-pc-windows-msvc", x86_64_pc_windows_msvc),

src/librustc_target/spec/windows_uwp_base.rs

@@ -0,0 +1,64 @@
+use crate::spec::{LinkArgs, LinkerFlavor, TargetOptions};
+use std::default::Default;
+
+pub fn opts() -> TargetOptions {
+    let mut pre_link_args = LinkArgs::new();
+    pre_link_args.insert(LinkerFlavor::Gcc, vec![
+            // 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".to_string(),
+
+            // Always enable DEP (NX bit) when it is available
+            "-Wl,--nxcompat".to_string(),
+        ]);
+
+    let mut late_link_args = LinkArgs::new();
+    late_link_args.insert(LinkerFlavor::Gcc, vec![
+        //"-lwinstorecompat".to_string(),
+        //"-lmingwex".to_string(),
+        //"-lwinstorecompat".to_string(),
+        "-lwinstorecompat".to_string(),
+        "-lruntimeobject".to_string(),
+        "-lsynchronization".to_string(),
+        "-lvcruntime140_app".to_string(),
+        "-lucrt".to_string(),
+        "-lwindowsapp".to_string(),
+        "-lmingwex".to_string(),
+        "-lmingw32".to_string(),
+    ]);
+
+    TargetOptions {
+        // FIXME(#13846) this should be enabled for windows
+        function_sections: false,
+        linker: Some("gcc".to_string()),
+        dynamic_linking: true,
+        executables: false,
+        dll_prefix: String::new(),
+        dll_suffix: ".dll".to_string(),
+        exe_suffix: ".exe".to_string(),
+        staticlib_prefix: "lib".to_string(),
+        staticlib_suffix: ".a".to_string(),
+        no_default_libraries: true,
+        target_family: Some("windows".to_string()),
+        is_like_windows: true,
+        allows_weak_linkage: false,
+        pre_link_args,
+        pre_link_objects_exe: vec![
+            "rsbegin.o".to_string(), // Rust compiler runtime initialization, see rsbegin.rs
+        ],
+        pre_link_objects_dll: vec![
+            "rsbegin.o".to_string(),
+        ],
+        late_link_args,
+        post_link_objects: vec![
+            "rsend.o".to_string(),
+        ],
+        custom_unwind_resume: true,
+        abi_return_struct_as_int: true,
+        emit_debug_gdb_scripts: false,
+        requires_uwtable: true,
+        limit_rdylib_exports: false,
+
+        .. Default::default()
+    }
+}

src/librustc_target/spec/x86_64_uwp_windows_gnu.rs

@@ -0,0 +1,22 @@
+use crate::spec::{LinkerFlavor, Target, TargetResult};
+
+pub fn target() -> TargetResult {
+    let mut base = super::windows_uwp_base::opts();
+    base.cpu = "x86-64".to_string();
+    base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap().push("-m64".to_string());
+    base.max_atomic_width = Some(64);
+
+    Ok(Target {
+        llvm_target: "x86_64-pc-windows-gnu".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_width: "64".to_string(),
+        target_c_int_width: "32".to_string(),
+        data_layout: "e-m:w-i64:64-f80:128-n8:16:32:64-S128".to_string(),
+        arch: "x86_64".to_string(),
+        target_os: "windows".to_string(),
+        target_env: "gnu".to_string(),
+        target_vendor: "uwp".to_string(),
+        linker_flavor: LinkerFlavor::Gcc,
+        options: base,
+    })
+}

src/librustdoc/clean/cfg.rs

@@ -16,7 +16,7 @@ use syntax_pos::Span;
 
 use crate::html::escape::Escape;
 
-#[derive(Clone, RustcEncodable, RustcDecodable, Debug, PartialEq, Eq, Hash)]
+#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub enum Cfg {
     /// Accepts all configurations.
     True,