[PATCH 01/28] elf: Do not search HWCAP subdirectories in statically linked binaries

[Carlos O'Donell]

On 10/1/20 2:22 PM, Adhemerval Zanella via Libc-alpha wrote:
> 
> 
> On 01/10/2020 13:31, Florian Weimer via Libc-alpha wrote:
>> This functionality does not seem to be useful since static dlopen
>> is mostly used for iconv/character set conversion and NSS support.
>> gconv modules are loaded with full paths anyway, so that the
>> HWCAP subdirectory logic does not apply.
> 
> This change looks reasonable, although it makes the semantic of 
> statically linked programs slight different than dynamic one regarding
> dlopen.

I think this is OK.

dlopen from statically linked programs is deprecated, the only uses
should be internal to glibc in NSS And iconv.

We really really want:

* Just a statically linked program that has no external deps.

* Just a dynamically linked program can support dlopen.

This half-way inbetween support we have has serious consequences,
and is the reason I supported us deprecating dlopen from static
binaries. Users should not be allowed to shoot themselves in
the foot.

$0.02.

-- 
Cheers,
Carlos.