uselib(2) System Calls Manual uselib(2) uselib - #include [[deprecated]] int uselib(const char *library); uselib() . . . . . -1 errno . open(2) mmap(2) : EACCES . ( path_resolution(7).) ENFILE . ENOEXEC . . glibc. glibc glibc glibc 2.23 (ABI) . syscall(2). libc ( glibc 2.0) uselib() . 3.15 CONFIG_USELIB. ar(1), gcc(1), ld(1), ldd(1), mmap(2), open(2), dlopen(3), capabilities(7), ld.so(8) 3 . . : . 6.18 8 2026 uselib(2)