From: Stephan Bergmann <sbergman@redhat.com>
To: binutils@sourceware.org
Subject: Deliberate deduplication of -rpath arguments in ld.bfd and ld.gold?
Date: Wed, 6 Jul 2022 11:06:49 +0200 [thread overview]
Message-ID: <38ff8f84-c34c-8a90-6070-4cbe62835940@redhat.com> (raw)
Over in the comments at <https://reviews.llvm.org/D129142> "[LLD][ELF]
Drop duplicates from rpath" we wonder what the rationale might be that
both ld.bfd and ld.gold apparently deliberately drop duplicated -rpath
arguments with identical paths (as in
> $ cat test.c
> void f(void) {}
> $ gcc -c test.c
> $ ld.bfd -rpath=/path -rpath=/path -shared test.o
> $ readelf -d a.out | grep RUNPATH
> 0x000000000000001d (RUNPATH) Library runpath: [/path]
for example).
For the relevant code in ld.bfd see `/* First see whether OPTARG is
already in the path. */` ever since
<https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=252b5132c753830d5fd56823373aed85f2a0db63>
"19990502 sourceware import") and for the relevant code in ld.gold see
`// Eliminate duplicates.` since
<https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=41f542e70b89b9ea2875c438b0c9a60ac46092dd>
"Add support for -rpath."
next reply other threads:[~2022-07-06 9:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-06 9:06 Stephan Bergmann [this message]
2022-07-06 11:32 ` Michael Matz
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