diff --git a/libc/Android.bp b/libc/Android.bp
index 36dfbc8..4776f90 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -154,7 +154,8 @@
         "-DTM_GMTOFF=tm_gmtoff",
         // Where we store our tzdata.
         "-DTZDIR=\\\"/system/usr/share/zoneinfo\\\"",
-        // Include timezone and daylight globals.
+        // Include `tzname`, `timezone`, and `daylight` globals.
+        "-DHAVE_POSIX_DECLS=0",
         "-DUSG_COMPAT=1",
         // Use the empty string (instead of "   ") as the timezone abbreviation
         // fallback.