diff --git a/pkgs/development/interpreters/tcl/generic.nix b/pkgs/development/interpreters/tcl/generic.nix index e1925821e5a..011b3a125ef 100644 --- a/pkgs/development/interpreters/tcl/generic.nix +++ b/pkgs/development/interpreters/tcl/generic.nix @@ -19,13 +19,14 @@ stdenv.mkDerivation rec { ''; configureFlags = [ + "--enable-threads" # Note: using $out instead of $man to prevent a runtime dependency on $man. "--mandir=${placeholder "out"}/share/man" "--enable-man-symlinks" # Don't install tzdata because NixOS already has a more up-to-date copy. "--with-tzdata=no" "tcl_cv_strtod_unbroken=ok" - ]; + ] ++ stdenv.lib.optional stdenv.is64bit "--enable-64bit"; enableParallelBuilding = true;