sd-dlopen - Man Page

#include <systemd/sd-dlopen​.h>

pkg-config --cflags libsystemd

sd-dlopen​.h provides macros for embedding ​.note​.dlopen metadata in ELF binaries, implementing the ELF dlopen metadata​^[1] specification for declaring optional shared library dependencies that are loaded via dlopen(3) at runtime​.

The header is self-contained and does not require runtime linkage against libsystemd(3)​. Projects only need the installed header to use the macros​.

Package managers and build systems can read the embedded ELF notes to discover runtime dependencies that are not visible in ELF DT_NEEDED entries​.

See SD_ELF_NOTE_DLOPEN(3) for details on the available macros and constants​.

The macros described here are header-only and do not require runtime linkage against libsystemd(3)​. Only the installed header and include path (as provided by pkg-config --cflags libsystemd) are needed​.

SD_ELF_NOTE_DLOPEN() and associated macros and constants were added in version 261​.

systemd(1), SD_ELF_NOTE_DLOPEN(3), dlopen(3)

1.

ELF dlopen metadata
https://uapi-group.org/specifications/specs/elf_dlopen_metadata/