diff --git a/src/apis/emscripten/env.rs b/src/apis/emscripten/env.rs
index 3e9406308..f10bd8f77 100644
--- a/src/apis/emscripten/env.rs
+++ b/src/apis/emscripten/env.rs
@@ -106,3 +106,7 @@ pub extern "C" fn _getpagesize() -> u32 {
     debug!("emscripten::_getpagesize");
     16384
 }
+
+pub extern "C" fn ___build_environment(environ: c_int) {
+    debug!("emscripten::___build_environment {}", environ);
+}
diff --git a/src/apis/emscripten/mod.rs b/src/apis/emscripten/mod.rs
index 9a81eea65..03e0308b8 100644
--- a/src/apis/emscripten/mod.rs
+++ b/src/apis/emscripten/mod.rs
@@ -118,6 +118,7 @@ pub fn generate_emscripten_env<'a, 'b>() -> ImportObject<&'a str, &'b str> {
     import_object.set("env", "_getenv", ImportValue::Func(env::_getenv as _));
     import_object.set("env", "_getpwnam", ImportValue::Func(env::_getpwnam as _));
     import_object.set("env", "_getgrnam", ImportValue::Func(env::_getgrnam as _));
+    import_object.set("env", "___buildEnvironment", ImportValue::Func(env::___build_environment as _));
     // Errno
     import_object.set(
         "env",