Add --disable-parallel-compilation CLI flag (#4911)

crates/cli-flags/Cargo.toml

@@ -22,6 +22,7 @@ default = [
     "wasmtime/cranelift",
     "wasmtime/jitdump",
     "wasmtime/vtune",
+    "wasmtime/parallel-compilation",
 ]
 pooling-allocator = []
 memory-init-cow = []

crates/cli-flags/src/lib.rs

@@ -124,6 +124,10 @@ pub struct CommonOptions {
     #[clap(long)]
     pub disable_cache: bool,
 
+    /// Disable parallel compilation
+    #[clap(long)]
+    pub disable_parallel_compilation: bool,
+
     /// Enables or disables WebAssembly features
     #[clap(long, value_name = "FEATURE,FEATURE,...", parse(try_from_str = parse_wasm_features))]
     pub wasm_features: Option<WasmFeatures>,
@@ -292,6 +296,10 @@ impl CommonOptions {
             }
         }
 
+        if self.disable_parallel_compilation {
+            config.parallel_compilation(false);
+        }
+
         if let Some(max) = self.static_memory_maximum_size {
             config.static_memory_maximum_size(max);
         }