errno 80 (ELIBBAD): meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: the executable loader found a required library but rejected its format.

Could be also:
Constant	Type	OS
ERROR_FILE_EXISTS	Win32 error	Windows
EAUTH	errno	Mac
ENOTUNIQ	errno	Solaris
PAGE_FAULT_IN_NONPAGED_AREA	BugCheck Code	Windows

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ELIBACC	ELIBSCN

ELIBBAD

ELIBBAD indicates that a shared library was accessible but not acceptable to the loader. That is different from a missing path: the diagnostic target is the object’s format, architecture, corruption state, or compatibility with the executable being loaded.

Do not reduce this to “file not found”. Check whether the object is the right architecture, whether it is truncated, whether it is an executable or shared object of the expected format, and whether a compatibility loader is being used. On modern Linux the visible message may come from the ELF interpreter or dynamic linker rather than directly from this errno name.

What to preserve

The resolved library path, device, inode, and package ownership.
ELF header information, architecture, ABI, and interpreter path.
Whether the file changed during deployment or extraction.
Dynamic linker diagnostics such as LD_DEBUG output when appropriate.

Linux execve(2) · Linux ELF loader source · Linux errno(3) · Linux UAPI errno definitions

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