```
Default action for ldconfig is specified as -R AKA 'append', and for
no-args (without options changing default actions), ldconfig should
append empty list of directories to current list. But because the check
was done before options were parsed out, presence of any option turned
off default rescan.
As result, innocently-looked commands like `ldconfig -v' were interpreted
as setting directory hints list to one specified on the command line,
i.e. empty.
Reported by: https://github.com/mesonbuild/meson/issues/9592
```
Other changes
```
ldconfig: use libexec/rtld-elf/rtld_paths.h
instead of duplicating definitions using slighly different macro names.
```
```
rtld_paths.h: Provide _PATH_ELF32_HINTS string, unconditionally
```
```
ldconfig: start of cleanup
Use bool.
Use local variables instead of static.
Remove non-functional debugging override of hints file path.
Use explicit exit() instead of return from main.
Minor style tweaks.
```