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Date: Wed, 11 Dec 2019 14:55:48 +0300
From: Scherbatiy Alexander <alexander.scherbatiy@...l-sw.com>
To: Szabolcs Nagy <nsz@...t70.net>,
"musl@...ts.openwall.com" <musl@...ts.openwall.com>
Subject: Re: RTLD_LAZY deferred symbol binding
Thank you. It works.
I looked at the ld help on linux Alpine and it shows
> ld --help
> -z lazy Mark object lazy runtime binding (default)
Should the lazy option be used by default or the documentation needs to be updated?
Thanks,
Alexander.
11.12.2019, 13:35, "Szabolcs Nagy" <nsz@...t70.net>:
> * Scherbatiy Alexander <alexander.scherbatiy@...l-sw.com> [2019-12-11 13:09:36 +0300]:
>> # build sources
>> gcc -c -fPIC src/resolved_impl.c -Iinclude -o bin/shared/resolved_impl.o
>> gcc -c -fPIC src/shared_lib.c -Iinclude -o bin/shared/shared_lib.o
>> gcc -shared bin/shared/shared_lib.o bin/shared/resolved_impl.o -Iinclude -o bin/shared/libshared_lib.so
>
> ^^^^^^^^^^^^^^^
>
> you need to pass -Wl,-z,lazy (and verify it with readelf -d )
> because alpine (and various other distros) defaults to -z now
> (and then libc obviously cant do lazy binding no matter what
> you specified in dlopen).
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