[lld] [LLD] dtNeeded name should consistent with soNames (PR #72857)

[Longsheng Mou via llvm-commits]

CoTinker wrote:

> I suspect that you have an incorrect use case, but the case is not clearly described and I cannot verify. This inconsistency fault is likely at the user side when a shared object does not have `DT_SONAME` (https://maskray.me/blog/2020-11-15-explain-gnu-linker-options#sonamename)
> 
> FYI I place all needed files in a directory and run `cd dir; mkreproduce . > /tmp/rep.sh` to create `cat <<eof` and `echo` instructions that other people can easily reproduce. (e.g. https://maskray.me/blog/2020-11-26-all-about-symbol-versioning#version-script is an example using the script to prepare for input files)
> 
> ```
> #!/bin/zsh
> dry_run=
> if [[ $1 == --dry-run ]]; then dry_run=1; shift; fi
> 
> f() {
>   for f in $1/*(ND.^x); do
>     [[ ${f##*/} =~ '^\.' ]] && continue
>     if [[ -n $dry_run ]]; then
>       echo $f
>     elif [[ $(wc -l < $f) == 1 ]]; then
>       echo "echo '$(<$f)' > $f"
>     else
>       if [[ ${f##*/} == Makefile ]]; then
>         printf '%s\n' "sed 's/^        /\\t/' > $f <<'eof'"
>       else
>         echo "cat > $f <<'eof'"
>       fi
>       cat $f
>       echo eof
>     fi
>   done
>   for d in $1/*(ND/); do
>     [[ $d =~ '^\.' ]] && continue
>     echo mkdir -p $d
>     f $d
>   done
> }
> 
> f ${1:-.}
> ```
> 
> ```
> clang case/use.c -o exe/libuse.so -lhave -Lexe --shared -fPIC
> ```
> 
> The `-o libuse.so` instruction does not mention how you switched the directory, so the example is difficult to follow.

Thank you, the core problem is probably shared object does not have DT_SONAME.

https://github.com/llvm/llvm-project/pull/72857