From 98dca67e34886ad626eabb00e74d05f32217986c Mon Sep 17 00:00:00 2001
From: Cheng Shao <astrohavoc@gmail.com>
Date: Wed, 14 Sep 2022 10:57:06 +0000
Subject: [PATCH] Add --disable-parallel-compilation CLI flag

---
 crates/cli-flags/Cargo.toml | 1 +
 crates/cli-flags/src/lib.rs | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/crates/cli-flags/Cargo.toml b/crates/cli-flags/Cargo.toml
index 1c27f3528105..2b406c318a59 100644
--- a/crates/cli-flags/Cargo.toml
+++ b/crates/cli-flags/Cargo.toml
@@ -22,6 +22,7 @@ default = [
     "wasmtime/cranelift",
     "wasmtime/jitdump",
     "wasmtime/vtune",
+    "wasmtime/parallel-compilation",
 ]
 pooling-allocator = []
 memory-init-cow = []
diff --git a/crates/cli-flags/src/lib.rs b/crates/cli-flags/src/lib.rs
index 5f57363f15ce..058522bbb94e 100644
--- a/crates/cli-flags/src/lib.rs
+++ b/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);
         }