<div dir="ltr">One thing I noticed is that llvm-strip seemed to remove a .ARM.attributes section. Can you try --keep-section=.ARM.attributes to tell to the command to keep the section?</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 17, 2019 at 5:37 PM Tobias Hieta via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello,<br>
<br>
Recently we tried to streamline our toolchain by removing some GNU<br>
tools with LLVM tools to avoid having multiple copies of strip, nm, ar<br>
and similar tools. Today we ran into a really strange issue where<br>
shared objects where not loadable.<br>
<br>
We where able to track this down to llvm-strip with default arguments<br>
creating a shared object that doesn't load correctly. It works if we<br>
switch from not passing args to llvm-strip to pass -strip-all-gnu<br>
<br>
I built bzip2 and libbz2.so to show this case here:<br>
<a href="https://1drv.ms/u/s!Amjta5FRkBbbkiz14aHTRJe03LlL?e=2mGvTN" rel="noreferrer" target="_blank">https://1drv.ms/u/s!Amjta5FRkBbbkiz14aHTRJe03LlL?e=2mGvTN</a><br>
<br>
This is the error we got by using the stripped shared object with<br>
llvm-strip -strip-all:<br>
<br>
admin@Netgear-RN212:~/b$ LD_PRELOAD=./libbz2.so.all ./bzip2<br>
ERROR: ld.so: object './libbz2.so.all' from LD_PRELOAD cannot be<br>
preloaded (cannot open shared object file): ignored.<br>
./bzip2: error while loading shared libraries: libbz2.so: cannot open<br>
shared object file: No such file or directory<br>
<br>
And with strip-all-gnu it works:<br>
admin@Netgear-RN212:~/b$ LD_PRELOAD=./libbz2.so.all_gnu ./bzip2<br>
bzip2: I won't write compressed data to a terminal.<br>
bzip2: For help, type: `bzip2 --help'.<br>
<br>
This only seems to happen on Linux-armv7hf - we haven't seen this on<br>
any of the intel platforms.<br>
<br>
Thanks,<br>
Tobias<br>
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</blockquote></div>