src/backend/port/dynloader/sco.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * sco.h
   4  *        port-specific prototypes for SCO 3.2v5.2
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * $PostgreSQL$
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef PORT_PROTOS_H
  15 #define PORT_PROTOS_H
  16
  17 #include <dlfcn.h>
  18 #include "utils/dynamic_loader.h"
  19
  20 /*
  21  * Dynamic Loader on SCO 3.2v5.0.2
  22  *
  23  * this dynamic loader uses the system dynamic loading interface for shared
  24  * libraries (ie. dlopen/dlsym/dlclose). The user must specify a shared
  25  * library as the file to be dynamically loaded.
  26  */
  27
  28 /*
  29  * In some older systems, the RTLD_NOW flag isn't defined and the mode
  30  * argument to dlopen must always be 1.  The RTLD_GLOBAL flag is wanted
  31  * if available, but it doesn't exist everywhere.
  32  * If it doesn't exist, set it to 0 so it has no effect.
  33  */
  34 #ifndef RTLD_NOW
  35 #define RTLD_NOW 1
  36 #endif
  37 #ifndef RTLD_GLOBAL
  38 #define RTLD_GLOBAL 0
  39 #endif
  40
  41 #define pg_dlopen(f)    dlopen((f), RTLD_NOW | RTLD_GLOBAL)
  42 #define pg_dlsym                dlsym
  43 #define pg_dlclose              dlclose
  44 #define pg_dlerror              dlerror
  45
  46 #endif   /* PORT_PROTOS_H */