If this cannot be done, an error is returned. Symbols in the shared object are resolved before dlopen() LD_BIND_NOW is set to a nonempty string, all undefined If this value is specified, or the environment variable Overridden by the effect of the LD_BIND_NOW environment Object is loaded.) Since glibc 2.1.1, this flag is Variables are always immediately bound when the shared Performed only for function references references to One of the following two values must be included in flags: Recursively, if those objects in turn have dependencies, and so Shared objects, then these are also automatically loaded by theĭynamic linker using the same rules. If the object specified by filename has dependencies on other O The directories /lib and /usr/lib are searched (in that Is checked to see whether it contains an entry for filename. O The cache file /etc/ld.so.cache (maintained by ldconfig(8)) Then the directories listed in that tag are searched. O (ELF only) If the calling object contains a DT_RUNPATH tag, (AsĪ security measure, this variable is ignored for set-user-ID Separated list of directories, then these are searched. Variable LD_LIBRARY_PATH was defined to contain a colon. O If, at the time that the program was started, the environment Tag, and does not contain a DT_RUNPATH tag, then theĭirectories listed in the DT_RPATH tag are searched. O (ELF only) If the calling object (i.e., the shared library orĮxecutable from which dlopen() is called) contains a DT_RPATH ![]() Otherwise, theĭynamic linker searches for the object as follows (see ld.so(8) Interpreted as a (relative or absolute) pathname. ![]() If filename contains a slash ("/"), then it is If filename is NULL, then the returned handle is for the main This handle isĮmployed with other functions in the dlopen API, such asĭlsym(3), dladdr(3), dlinfo(3), and dlclose(). Returns an opaque "handle" for the loaded object. Library) file named by the null-terminated string filename and ![]() The function dlopen() loads the dynamic shared object (shared SYNOPSIS top #include void *dlopen(const char * filename, int flags ) int dlclose(void * handle ) #define _GNU_SOURCE #include void *dlmopen(Lmid_t lmid, const char * filename, int flags ) DLOPEN(3) Linux Programmer's Manual DLOPEN(3) NAME topĭlclose, dlopen, dlmopen - open and close a shared object
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