1dlfcn.h(0P) POSIX Programmer's Manual dlfcn.h(0P)
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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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12 dlfcn.h — dynamic linking
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15 #include <dlfcn.h>
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18 The <dlfcn.h> header shall define at least the following symbolic con‐
19 stants for use in the construction of a dlopen() mode argument:
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21 RTLD_LAZY Relocations are performed at an implementation-defined
22 time.
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24 RTLD_NOW Relocations are performed when the object is loaded.
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26 RTLD_GLOBAL All symbols are available for relocation processing of
27 other modules.
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29 RTLD_LOCAL All symbols are not made available for relocation pro‐
30 cessing by other modules.
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32 The following shall be declared as functions and may also be defined as
33 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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44 None.
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47 None.
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50 None.
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53 The System Interfaces volume of POSIX.1‐2017, 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 1003.1-2017, Standard for Information Technology -- Por‐
59 table Operating System Interface (POSIX), The Open Group Base Specifi‐
60 cations Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of
61 Electrical and Electronics Engineers, Inc and The Open Group. In the
62 event of any discrepancy between this version and the original IEEE and
63 The Open Group Standard, the original IEEE and The Open Group Standard
64 is the referee document. The original Standard can be obtained online
65 at http://www.opengroup.org/unix/online.html .
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67 Any typographical or formatting errors that appear in this page are
68 most likely to have been introduced during the conversion of the source
69 files to man page format. To report such errors, see https://www.ker‐
70 nel.org/doc/man-pages/reporting_bugs.html .
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74IEEE/The Open Group 2017 dlfcn.h(0P)