Updates Solaris target information, adds Solaris maintainer

Author: psumbera

compiler/rustc_target/src/spec/targets/sparcv9_sun_solaris.rs

@@ -13,7 +13,7 @@ pub(crate) fn target() -> Target {
     Target {
         llvm_target: "sparcv9-sun-solaris".into(),
         metadata: crate::spec::TargetMetadata {
-            description: Some("SPARC Solaris 11, illumos".into()),
+            description: Some("SPARC Solaris 11.4".into()),
             tier: Some(2),
             host_tools: Some(false),
             std: Some(true),

compiler/rustc_target/src/spec/targets/x86_64_pc_solaris.rs

@@ -13,7 +13,7 @@ pub(crate) fn target() -> Target {
     Target {
         llvm_target: "x86_64-pc-solaris".into(),
         metadata: crate::spec::TargetMetadata {
-            description: Some("64-bit Solaris 11, illumos".into()),
+            description: Some("64-bit Solaris 11.4".into()),
             tier: Some(2),
             host_tools: Some(false),
             std: Some(true),

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

@@ -180,7 +180,7 @@ target | std | notes
 `riscv64gc-unknown-none-elf` | * | Bare RISC-V (RV64IMAFDC ISA)
 `riscv64imac-unknown-none-elf` | * | Bare RISC-V (RV64IMAC ISA)
 `sparc64-unknown-linux-gnu` | ✓ | SPARC Linux (kernel 4.4, glibc 2.23)
-`sparcv9-sun-solaris` | ✓ | SPARC Solaris 11, illumos
+[`sparcv9-sun-solaris`](platform-support/solaris.md) | ✓ | SPARC V9 Solaris 11.4
 [`thumbv6m-none-eabi`](platform-support/thumbv6m-none-eabi.md) | * | Bare Armv6-M
 [`thumbv7em-none-eabi`](platform-support/thumbv7em-none-eabi.md) | * | Bare Armv7E-M
 [`thumbv7em-none-eabihf`](platform-support/thumbv7em-none-eabi.md) | * | Bare Armv7E-M, hardfloat
@@ -201,7 +201,7 @@ target | std | notes
 [`x86_64-fortanix-unknown-sgx`](platform-support/x86_64-fortanix-unknown-sgx.md) | ✓ | [Fortanix ABI] for 64-bit Intel SGX
 [`x86_64-unknown-fuchsia`](platform-support/fuchsia.md) | ✓ | 64-bit x86 Fuchsia
 [`x86_64-linux-android`](platform-support/android.md) | ✓ | 64-bit x86 Android
-`x86_64-pc-solaris` | ✓ | 64-bit Solaris 11, illumos
+[`x86_64-pc-solaris`](platform-support/solaris.md) | ✓ | 64-bit x86 Solaris 11.4
 [`x86_64-pc-windows-gnullvm`](platform-support/pc-windows-gnullvm.md) | ✓ | 64-bit x86 MinGW (Windows 10+), LLVM ABI
 `x86_64-unknown-linux-gnux32` | ✓ | 64-bit Linux (x32 ABI) (kernel 4.15, glibc 2.27)
 [`x86_64-unknown-linux-ohos`](platform-support/openharmony.md) | ✓ | x86_64 OpenHarmony

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

@@ -0,0 +1,32 @@
+# sparcv9-sun-solaris
+# x86_64-pc-solaris
+
+**Tier: 2**
+
+Rust for Solaris operating system.
+
+## Target maintainers
+
+- Petr Sumbera `[email protected]`, https://github.com/psumbera
+
+## Requirements
+
+Binary built for this target is expected to run on sparcv9 or x86_64, and Solaris 11.4.
+
+## Testing
+
+For testing you can download Oracle Solaris 11.4 CBE release from:
+
+  https://www.oracle.com/uk/solaris/solaris11/downloads/solaris-downloads.html
+
+Solaris CBE release is also available for GitHub CI:
+
+  https://github.com/vmactions/solaris-vm
+
+Latest Solaris 11.4 SRU can be tested at Compile farm project:
+
+  https://portal.cfarm.net/machines/list/ (cfarm215, cfarm215)
+
+There are no official Rust binaries for Solaris available for Rustup yet. But you can eventually download unofficial from:
+
+  https://github.com/psumbera/solaris-rust