Rollup merge of #63604 - Wind-River:master, r=alexcrichton

Some update for vxWorks

1. support crt-static
2. change armv7_wrs_vxworks to armv7_wrs_vxworks_eabihf.
3. change vx-cxx to wr-c++,  vx-ar to wr-ar and vx-run to wr-run.
4. code cleanup

r? @alexcrichton

Author: Centril

src/bootstrap/cc_detect.rs

@@ -46,7 +46,7 @@ fn cc2ar(cc: &Path, target: &str) -> Option<PathBuf> {
     } else if target.contains("openbsd") {
         Some(PathBuf::from("ar"))
     } else if target.contains("vxworks") {
-        Some(PathBuf::from("vx-ar"))
+        Some(PathBuf::from("wr-ar"))
     } else {
         let parent = cc.parent().unwrap();
         let file = cc.file_name().unwrap().to_str().unwrap();

src/librustc_target/spec/aarch64_wrs_vxworks.rs

@@ -9,15 +9,14 @@ pub fn target() -> TargetResult {
         target_endian: "little".to_string(),
         target_pointer_width: "64".to_string(),
         target_c_int_width: "32".to_string(),
-        target_env: "gnu".to_string(),
         data_layout: "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128".to_string(),
         arch: "aarch64".to_string(),
         target_os: "vxworks".to_string(),
-        target_vendor: "unknown".to_string(),
+        target_env: "gnu".to_string(),
+        target_vendor: "wrs".to_string(),
         linker_flavor: LinkerFlavor::Gcc,
         options: TargetOptions {
             abi_blacklist: super::arm_base::abi_blacklist(),
-            target_mcount: "\u{1}_mcount".to_string(),
             .. base
         },
     })

src/librustc_target/spec/arm_wrs_vxworks_sf.rs

@@ -1,8 +1,5 @@
 use crate::spec::{LinkerFlavor, Target, TargetOptions, TargetResult};
 
-// This target is for glibc Linux on ARMv7 without NEON or
-// thumb-mode. See the thumbv7neon variant for enabling both.
-
 pub fn target() -> TargetResult {
     let base = super::vxworks_base::opts();
     Ok(Target {
@@ -14,17 +11,14 @@ pub fn target() -> TargetResult {
         arch: "arm".to_string(),
         target_os: "vxworks".to_string(),
         target_env: "gnu".to_string(),
-        target_vendor: "unknown".to_string(),
+        target_vendor: "wrs".to_string(),
         linker_flavor: LinkerFlavor::Gcc,
-
         options: TargetOptions {
             // Info about features at https://wiki.debian.org/ArmHardFloatPort
             features: "+v7,+vfp3,-d32,+thumb2,-neon".to_string(),
             cpu: "generic".to_string(),
             max_atomic_width: Some(64),
             abi_blacklist: super::arm_base::abi_blacklist(),
-            target_mcount: "\u{1}__gnu_mcount_nc".to_string(),
-            position_independent_executables: false,
             .. base
         }
     })

src/librustc_target/spec/armv7_wrs_vxworks.rs

@@ -16,7 +16,7 @@ pub fn target() -> TargetResult {
         arch: "x86".to_string(),
         target_os: "vxworks".to_string(),
         target_env: "gnu".to_string(),
-        target_vendor: "unknown".to_string(),
+        target_vendor: "wrs".to_string(),
         linker_flavor: LinkerFlavor::Gcc,
         options: base,
     })

src/librustc_target/spec/arm_wrs_vxworks.rs renamed to src/librustc_target/spec/armv7_wrs_vxworks_eabihf.rs

@@ -493,10 +493,9 @@ supported_targets! {
 
     ("nvptx64-nvidia-cuda", nvptx64_nvidia_cuda),
 
-    ("x86_64-wrs-vxworks", x86_64_wrs_vxworks),
     ("i686-wrs-vxworks", i686_wrs_vxworks),
-    ("i586-wrs-vxworks", i586_wrs_vxworks),
-    ("armv7-wrs-vxworks", armv7_wrs_vxworks),
+    ("x86_64-wrs-vxworks", x86_64_wrs_vxworks),
+    ("armv7-wrs-vxworks-eabihf", armv7_wrs_vxworks_eabihf),
     ("aarch64-wrs-vxworks", aarch64_wrs_vxworks),
     ("powerpc-wrs-vxworks", powerpc_wrs_vxworks),
     ("powerpc-wrs-vxworks-spe", powerpc_wrs_vxworks_spe),

src/librustc_target/spec/i586_wrs_vxworks.rs

@@ -15,10 +15,9 @@ pub fn target() -> TargetResult {
         arch: "powerpc64".to_string(),
         target_os: "vxworks".to_string(),
         target_env: "gnu".to_string(),
-        target_vendor: "unknown".to_string(),
+        target_vendor: "wrs".to_string(),
         linker_flavor: LinkerFlavor::Gcc,
         options: TargetOptions {
-            target_mcount: "_mcount".to_string(),
             .. base
         },
     })