diff --git a/dom/media/webrtc/moz.build b/dom/media/webrtc/moz.build
index a0eb26e930e..b04b827c57a 100644
--- a/dom/media/webrtc/moz.build
+++ b/dom/media/webrtc/moz.build
@@ -60,6 +60,15 @@ EXPORTS.mozilla += [
 
 include('/ipc/chromium/chromium-config.mozbuild')
 
+# Suppress some GCC/clang warnings being treated as errors:
+#  - about attributes on forward declarations for types that are already
+#    defined, which complains about important MOZ_EXPORT attributes for 
+#    android API types
+if CONFIG['GNU_CC'] or CONFIG['CLANG_CL']:
+  CXXFLAGS += [
+    '-Wno-error=attributes'
+  ]
+
 FINAL_LIBRARY = 'xul'
 if CONFIG['OS_ARCH'] == 'WINNT':
     DEFINES['NOMINMAX'] = True