src/jdk.pack/share/native/common-unpack/defines.h

*** 116,135 ****
--- 116,137 ----
  #define dup2(a,b)       _dup2(a,b)
  #define strcasecmp(s1, s2) _stricmp(s1,s2)
  #define tempname        _tempname
  #define sleep           Sleep
  #define snprintf        _snprintf
+ #define PATH_SEPARATOR '\\'
  #else
  typedef signed char byte;
  #ifdef _LP64
  typedef long jlong;
  typedef long unsigned julong;
  #else
  typedef long long jlong;
  typedef long long unsigned julong;
  #endif
  #define MKDIR(dir) mkdir(dir, 0777);
+ #define PATH_SEPARATOR '/'
  #endif
  
  #ifdef OLDCC
  typedef int bool;
  enum { false, true };