gnumake: Fix build against glibc 2.27.

pkgs/development/tools/build-managers/gnumake/4.2/default.nix

@@ -4,6 +4,8 @@ assert guileSupport -> ( pkgconfig != null && guile != null );
 
 let
   version = "4.2.1";
+
+  needGlibcPatch = (stdenv.cc.libc.version or "") == "2.27";
 in
 stdenv.mkDerivation {
   name = "gnumake-${version}";
@@ -20,7 +22,7 @@ stdenv.mkDerivation {
     # included Makefiles, don't look in /usr/include and friends.
     ./impure-dirs.patch
     ./pselect.patch
-  ];
+  ] ++ stdenv.lib.optional needGlibcPatch ./glibc-2.27.patch;
 
   nativeBuildInputs = stdenv.lib.optionals guileSupport [ pkgconfig ];
   buildInputs = stdenv.lib.optionals guileSupport [ guile ];