Fangrui Song f8cb78e99a [ELF] Don't define __rela_iplt_start for -pie/-shared ...

`clang -fuse-ld=lld -static-pie -fpie` produced executable
currently crashes and this patch makes it work.

See https://sourceware.org/bugzilla/show_bug.cgi?id=27164
and https://sourceware.org/pipermail/libc-alpha/2021-July/128810.html

While it seems unreasonable to keep csu/libc-start.c ARCH_APPLY_IREL unclear in
static-pie mode and have an unneeded diff -u =(ld.bfd --verbose) =(ld.bfd -pie
--verbose) difference, glibc folks don't want to fix their code.
I feel sad about that but this patch can remove an iffy condition for lld/ELF
as well: `needsInterpSection()`.

2021-07-15 11:31:11 -07:00

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