Unforced avx and avx2 features

core/src/validator.rs

@@ -774,7 +774,7 @@ fn report_target_features() {
         // Validator binaries built on a machine with AVX support will generate invalid opcodes
         // when run on machines without AVX causing a non-obvious process abort.  Instead detect
         // the mismatch and error cleanly.
-        #[target_feature(enable = "avx")]
+        #[cfg(target_feature = "avx")]
         {
             if is_x86_feature_detected!("avx") {
                 info!("AVX detected");
@@ -783,6 +783,15 @@ fn report_target_features() {
                 process::exit(1);
             }
         }
+        #[cfg(target_feature = "avx2")]
+        {
+            if is_x86_feature_detected!("avx2") {
+                info!("AVX2 detected");
+            } else {
+                error!("Your machine does not have AVX2 support, please rebuild from source on your machine");
+                process::exit(1);
+            }
+        }
     }
 }
 

scripts/cargo-install-all.sh

@@ -51,6 +51,8 @@ fi
 installDir="$(mkdir -p "$installDir"; cd "$installDir"; pwd)"
 mkdir -p "$installDir/bin/deps"
 cargo=cargo
+# Trigger the selection of the correct set of processor features such as AVX2.
+RUSTFLAGS="$RUSTFLAGS -C target-cpu=native"
 
 echo "Install location: $installDir ($buildVariant)"