add solana check

Author: Perelyn-sama

tokens/pda-mint-authority/steel/program/build.rs

@@ -2,9 +2,28 @@
 use std::fs;
 use std::process::Command;
 
+fn check_solana_installation() -> Result<(), String> {
+    match Command::new("solana").arg("--version").output() {
+        Ok(output) => {
+            if output.status.success() {
+                Ok(())
+            } else {
+                Err("Solana CLI is available but returned an error".to_string())
+            }
+        }
+        Err(e) => Err(format!("Solana CLI is not installed or not in PATH: {}", e)),
+    }
+}
+
 fn main() {
     println!("cargo:rerun-if-changed=build.rs");
 
+    // Check if Solana is installed
+    if let Err(err) = check_solana_installation() {
+        println!("cargo:warning=Solana check failed: {}", err);
+        return;
+    }
+
     // Create the fixtures directory path
     fs::create_dir_all("tests/fixtures").expect("Failed to create fixtures directory");