src/backend/port/dynloader/cygwin.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * Dynamic loader declarations for Cygwin
   4  *
   5  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
   6  * Portions Copyright (c) 1994, Regents of the University of California
   7  *
   8  * $PostgreSQL$
   9  *
  10  *-------------------------------------------------------------------------
  11   */
  12 #ifndef PORT_PROTOS_H
  13 #define PORT_PROTOS_H
  14
  15 #include <dlfcn.h>
  16 #include "utils/dynamic_loader.h"
  17
  18 /*
  19  * In some older systems, the RTLD_NOW flag isn't defined and the mode
  20  * argument to dlopen must always be 1.  The RTLD_GLOBAL flag is wanted
  21  * if available, but it doesn't exist everywhere.
  22  * If it doesn't exist, set it to 0 so it has no effect.
  23  */
  24 #ifndef RTLD_NOW
  25 #define RTLD_NOW 1
  26 #endif
  27 #ifndef RTLD_GLOBAL
  28 #define RTLD_GLOBAL 0
  29 #endif
  30
  31 #define pg_dlopen(f)    dlopen((f), RTLD_NOW | RTLD_GLOBAL)
  32 #define pg_dlsym                dlsym
  33 #define pg_dlclose              dlclose
  34 #define pg_dlerror              dlerror
  35
  36 #endif   /* PORT_PROTOS_H */