diff --git a/src/gtest/meson.build b/src/gtest/meson.build
index 91a49240416..23c21423d00 100644
--- a/src/gtest/meson.build
+++ b/src/gtest/meson.build
@@ -22,6 +22,7 @@ libgtest = static_library(
   'gtest',
   files('src/gtest-all.cc', 'src/gtest_main.cc'),
   include_directories : include_directories('include'),
+  cpp_args : '-w',
   build_by_default : false,
 )