diff --git a/ecsact/private/ecsact_binary.bzl b/ecsact/private/ecsact_binary.bzl
index 7be4b16..c8942c5 100644
--- a/ecsact/private/ecsact_binary.bzl
+++ b/ecsact/private/ecsact_binary.bzl
@@ -55,6 +55,11 @@ def _ecsact_binary_impl(ctx):
     report_filter = ctx.var.get("ECSACT_CLI_REPORT_FILTER", "errors_and_warnings")
     args.add("--report_filter", report_filter)
 
+    if ctx.var["COMPILATION_MODE"] == "dbg":
+        args.add("--debug")
+        if ctx.attr.debug_symbols_extension:
+            outputs.append(ctx.actions.declare_file("{}{}".format(ctx.attr.name, ctx.attr.debug_symbols_extension)))
+
     compiler_config = {
         "compiler_type": "auto",
         "compiler_path": cc_toolchain.compiler_executable,
@@ -150,6 +155,9 @@ _ecsact_binary = rule(
         "interface_library_extension": attr.string(
             mandatory = True,
         ),
+        "debug_symbols_extension": attr.string(
+            mandatory = True,
+        ),
         "linkopts": attr.string_list(
             mandatory = False,
         ),
@@ -174,5 +182,12 @@ def ecsact_binary(**kwargs):
             "@platforms//os:wasi": "",
             "@platforms//os:none": "",  # for non-wasi
         }),
+        debug_symbols_extension = select({
+            "@platforms//os:windows": ".pdb",
+            "@platforms//os:linux": "",
+            "@platforms//os:macos": "",
+            "@platforms//os:wasi": "",
+            "@platforms//os:none": "",  # for non-wasi
+        }),
         **kwargs
     )