diff --git a/pkgs/development/interpreters/perl/interpreter.nix b/pkgs/development/interpreters/perl/interpreter.nix
index be75635d7e98..0de0d9c6cdb7 100644
--- a/pkgs/development/interpreters/perl/interpreter.nix
+++ b/pkgs/development/interpreters/perl/interpreter.nix
@@ -147,6 +147,7 @@ stdenv.mkDerivation (
         "-Dinstallstyle=lib/perl5"
         "-Dlocincpth=${libcInc}/include"
         "-Dloclibpth=${libcLib}/lib"
+        "-Accflags=-D_GNU_SOURCE"
       ]
       ++ lib.optional stdenv.hostPlatform.isStatic "-Uusedl"
       ++ lib.optionals ((builtins.match ''5\.[0-9]*[13579]\..+'' version) != null) [