cabextract: support cross-compilation

pkgs/tools/archivers/cabextract/default.nix

@@ -9,6 +9,12 @@ stdenv.mkDerivation rec {
     sha256 = "19qwhl2r8ip95q4vxzxg2kp4p125hjmc9762sns1dwwf7ikm7hmg";
   };
 
+  # Let's assume that fnmatch works for cross-compilation, otherwise it gives an error:
+  # undefined reference to `rpl_fnmatch'.
+  configureFlags = lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+    "ac_cv_func_fnmatch_works=yes"
+  ];
+
   meta = with lib; {
     homepage = "https://www.cabextract.org.uk/";
     description = "Free Software for extracting Microsoft cabinet files";