fixes from review

Author: androm3da

compiler/rustc_target/src/spec/targets/hexagon_qurt.rs

@@ -7,18 +7,19 @@ pub(crate) fn target() -> Target {
     Target {
         llvm_target: "hexagon-unknown-elf".into(),
         metadata: TargetMetadata {
-            description: Some("Hexagon QuRT (Qualcomm Real-Time OS)".into()),
+            description: Some("Hexagon QuRT".into()),
             tier: Some(3),
             host_tools: Some(false),
-            std: Some(true),
+            std: Some(false),
         },
         pointer_width: 32,
         data_layout: "\
             e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32\
             :32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32\
             :32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048\
-            :2048:2048".into()
-        .into(),
+            :2048:2048"
+            .into()
+            .into(),
         arch: "hexagon".into(),
         options: TargetOptions {
             os: "qurt".into(),

src/doc/rustc/src/platform-support.md

@@ -314,6 +314,7 @@ target | std | host | notes
 `csky-unknown-linux-gnuabiv2hf` | ✓ |  | C-SKY abiv2 Linux, hardfloat (little endian)
 [`hexagon-unknown-linux-musl`](platform-support/hexagon-unknown-linux-musl.md) | ✓ | | Hexagon Linux with musl 1.2.3
 [`hexagon-unknown-none-elf`](platform-support/hexagon-unknown-none-elf.md)| * | | Bare Hexagon (v60+, HVX)
+[`hexagon-qurt`](platform-support/hexagon-qurt.md)| * | | Hexagon QuRT
 [`i386-apple-ios`](platform-support/apple-ios.md) | ✓ |  | 32-bit x86 iOS (Penryn) [^x86_32-floats-return-ABI]
 [`i586-unknown-netbsd`](platform-support/netbsd.md) | ✓ |  | 32-bit x86 (original Pentium) [^x86_32-floats-x87]
 [`i586-unknown-redox`](platform-support/redox.md) | ✓ |  | 32-bit x86 Redox OS (PentiumPro) [^x86_32-floats-x87]

src/doc/rustc/src/platform-support/hexagon-unknown-qurt.md

@@ -28,12 +28,15 @@ Functions marked `extern "C"` use the [Hexagon architecture calling convention](
 This target generates position-independent ELF binaries by default, making it
 suitable for both static images and dynamic shared objects.
 
+The [Hexagon SDK](https://softwarecenter.qualcomm.com/catalog/item/Hexagon_SDK) is
+required for building programs for this target.
+
 ## Linking
 
 This target selects `rust-lld` by default.  Another option to use is
 [eld](https://github.com/qualcomm/eld), which is also provided with
 [the opensource hexagon toolchain](https://github.com/quic/toolchain_for_hexagon)
-and the [Hexagon SDK](https://softwarecenter.qualcomm.com/catalog/item/Hexagon_SDK).
+and the Hexagon SDK.
 
 ## Building the target
 
@@ -49,8 +52,8 @@ target = ["<target for your host>", "hexagon-qurt"]
 [target.hexagon-qurt]
 cc = "hexagon-clang"
 cxx = "hexagon-clang++"
-ranlib = "hexagon-ranlib"
-ar = "hexagon-ar"
+ranlib = "llvm-ranlib"
+ar = "llvm-ar"
 llvm-libunwind = 'in-tree'
 ```
 
@@ -71,7 +74,7 @@ configuration with additional linker flags:
 
 ```sh
 # Build a static executable for QuRT
-cargo build --target hexagon-qurt \
+cargo rustc --target hexagon-qurt -- \
     -C link-args="-static -nostdlib" \
     -C link-args="-L/opt/Hexagon_SDK/6.3.0.0/rtos/qurt/computev69/lib" \
     -C link-args="-lqurt -lc"
@@ -89,8 +92,8 @@ For shared libraries that can be dynamically loaded by QuRT applications:
 
 ```sh
 # Build a shared object for QuRT
-cargo build --target hexagon-qurt \
-    --crate-type=cdylib \
+cargo rustc --target hexagon-qurt \
+    --crate-type=cdylib -- \
     -C link-args="-shared -fPIC" \
     -C link-args="-L/opt/Hexagon_SDK/6.3.0.0/rtos/qurt/computev69/lib"
 ```