No dwarf

src/module/config.rs

@@ -4,6 +4,7 @@ use crate::module::Module;
 /// Configuration for a `Module` which currently affects parsing.
 #[derive(Clone, Debug, Default)]
 pub struct ModuleConfig {
+    pub(crate) generate_dwarf: bool,
     pub(crate) generate_names: bool,
     pub(crate) skip_strict_validate: bool,
 }
@@ -14,6 +15,17 @@ impl ModuleConfig {
         ModuleConfig::default()
     }
 
+    /// Sets a flag to whether DWARF debug sections are generated for this
+    /// module.
+    ///
+    /// By default this flag is `false`. Note that any emitted DWARF is
+    /// currently wildly incorrect and buggy, and is also larger than the wasm
+    /// itself!
+    pub fn generate_dwarf(&mut self, generate: bool) -> &mut ModuleConfig {
+        self.generate_dwarf = generate;
+        self
+    }
+
     /// Sets a flag to whether debugging names are generated for
     /// locals/functions/etc when parsing and running passes for this module.
     ///

src/module/mod.rs

@@ -256,9 +256,17 @@ impl Module {
         self.funcs.emit(&mut cx);
         self.data.emit(&mut cx);
 
-        emit_name_section(&mut cx);
+        if self.config.generate_names {
+            emit_name_section(&mut cx);
+        }
+
         self.producers.emit(&mut cx);
         for section in self.custom.iter() {
+            if !self.config.generate_dwarf && section.name.starts_with(".debug") {
+                log::debug!("skipping DWARF custom section {}", section.name);
+                continue;
+            }
+
             log::debug!("emitting custom section {}", section.name);
             cx.custom_section(&section.name).encoder.raw(&section.value);
         }