1dlfcn.h(0P)                POSIX Programmer's Manual               dlfcn.h(0P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

13       dlfcn.h — dynamic linking
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SYNOPSIS

16       #include <dlfcn.h>
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DESCRIPTION

19       The <dlfcn.h> header shall define at least the following symbolic  con‐
20       stants for use in the construction of a dlopen() mode argument:
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22       RTLD_LAZY     Relocations  are  performed  at an implementation-defined
23                     time.
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25       RTLD_NOW      Relocations are performed when the object is loaded.
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27       RTLD_GLOBAL   All symbols are available for  relocation  processing  of
28                     other modules.
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30       RTLD_LOCAL    All  symbols  are  not made available for relocation pro‐
31                     cessing by other modules.
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33       The following shall be declared as functions and may also be defined as
34       macros. Function prototypes shall be provided.
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36           int    dlclose(void *);
37           char  *dlerror(void);
38           void  *dlopen(const char *, int);
39           void  *dlsym(void *restrict, const char *restrict);
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41       The following sections are informative.
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APPLICATION USAGE

44       None.
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RATIONALE

47       None.
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FUTURE DIRECTIONS

50       None.
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SEE ALSO

53       The  System  Interfaces  volume  of POSIX.1‐2008, dlclose(), dlerror(),
54       dlopen(), dlsym()
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57       Portions of this text are reprinted and reproduced in  electronic  form
58       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
59       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
60       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
61       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
62       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
63       event of any discrepancy between this version and the original IEEE and
64       The  Open Group Standard, the original IEEE and The Open Group Standard
65       is the referee document. The original Standard can be  obtained  online
66       at http://www.unix.org/online.html .
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68       Any  typographical  or  formatting  errors that appear in this page are
69       most likely to have been introduced during the conversion of the source
70       files  to  man page format. To report such errors, see https://www.ker‐
71       nel.org/doc/man-pages/reporting_bugs.html .
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75IEEE/The Open Group                  2013                          dlfcn.h(0P)
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