diff --git a/runtimes/mingw/import_libs.bzl b/runtimes/mingw/import_libs.bzl
--- a/runtimes/mingw/import_libs.bzl
+++ b/runtimes/mingw/import_libs.bzl
@@ -30,6 +30,8 @@
     # ucrtbase-common.def.in:1800:28: warning: missing terminating ' character [-Winvalid-pp-token]
     # 1800 | F_LD64(_o_remainderl) ; Can't use long double functions from the CRT on x86
     args.add("-Wno-invalid-pp-token")
+    # MinGW 14 func.def.in uses #ifndef F_X86_NATIVE(x).
+    args.add("-Wno-extra-tokens")
 
     args.add("-o", ctx.outputs.out)
     args.add(undecorated)