make: unifdef for other OSes (undefined)

@@ -40,14 +40,10 @@
 #include <mksh/misc.h>          /* getmem() */
 #include <mksh/read.h>          /* get_next_block_fn() */
 #include <sys/uio.h>            /* read() */
 #include <unistd.h>             /* read(), unlink() */
 
-#if defined(HP_UX) || defined(linux)
-#include <avo/types.h>
-extern "C" Avo_err *avo_find_run_dir(char **dirp);
-#endif
 
 /*
  * typedefs & structs
  */
 

@@ -115,14 +111,10 @@
         Name                    normalized_makefile_name;
         register wchar_t        *string_start;
         register wchar_t        *string_end;
 
 
-#if defined(HP_UX) || defined(linux)
-        Avo_err                 *findrundir_err;
-        char                    *run_dir, makerules_dir[BUFSIZ];
-#endif
 
         wchar_t * wcb = get_wstring(makefile_name->string_mb);
 
 #ifdef NSE
         if (report_file){