Add rustup build script

Author: psumbera

rustup/README.md

@@ -0,0 +1,14 @@
+# Oracle Solaris Rustup builder
+
+This builds rustup for Solaris before Solaris is officially supported by
+Rustup upstream (https://github.com/rust-lang/rustup).
+
+It requires at least Rust 1.88 to build (it was tested with 1.91.1 [1])
+
+The usage is:
+
+RUST_PATH=~/rust-1.91.1/bin ./build.sh
+
+[1] Rust 1.91.1 for Solaris:
+https://static.rust-lang.org/dist/rust-1.91.1-x86_64-pc-solaris.tar.xz
+https://static.rust-lang.org/dist/rust-1.91.1-sparcv9-sun-solaris.tar.xz

rustup/build.sh

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+#!/bin/bash
+#
+# Build script for rustup  on Solaris.
+#
+set -xe
+
+VERSION=20251114
+
+PATH=$RUST_PATH:/usr/gnu/bin:/usr/bin
+
+WS="`pwd`"
+BUILD_DIR="$WS/build_dir"
+
+SRC_DIR=rustup-src
+
+SRU=$(uname -v | cut -d . -f 3)
+if [ $SRU -ge 78 ]; then
+  GCC=/usr/gcc/14/bin/gcc
+  GXX=/usr/gcc/14/bin/g++
+else
+  GCC=/usr/gcc/11/bin/gcc
+  GXX=/usr/gcc/11/bin/g++
+fi
+
+mkdir -p "$BUILD_DIR"
+
+# Clean build directory
+( cd "$BUILD_DIR"; rm -rf $SRC_DIR $BUILD_HOME )
+
+# Clone rustup repo
+( cd "$BUILD_DIR"; git clone https://github.com/rust-lang/rustup.git $SRC_DIR )
+
+# Check out tested working version
+( cd "$BUILD_DIR/$SRC_DIR" ; git checkout 7444818d076d05438a15422d9ebe97d062527d5b )
+
+cd "$BUILD_DIR"/$SRC_DIR
+
+# Build rustup
+PATH="$PATH" CC=$GCC CXX=$GXX cargo build --release
+
+# Rename and list rustup init binary
+OPENSSL_VERSION=`elfdump -d target/release/rustup-init | grep libssl | gsed 's;^.*so\.;;'`
+mv target/release/rustup-init target/release/rustup-init-$VERSION-`mach`-openssl$OPENSSL_VERSION
+ls -lh `pwd`/target/release/rustup-init-$VERSION-`mach`-openssl$OPENSSL_VERSION