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From: "Martin.Jansa at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/29249] csu/libc-tls.c:202: undefined reference to
 `_startup_fatal_not_constant'
Date: Tue, 09 Aug 2022 10:44:43 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29249

Martin Jansa <Martin.Jansa at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl.tools at gmail dot com

--- Comment #9 from Martin Jansa <Martin.Jansa at gmail dot com> ---
H.J can you please take a look at this one as well?

-O2 and higher works
-O1 and -Og fails

-O1 + -fexpensive-optimizations works
-Og + -fexpensive-optimizations fails

I'm aware of
https://sourceware.org/glibc/wiki/FAQ#Why_do_I_get:.60.23error_.22glibc_can=
not_be_compiled_without_optimization.22.27.2C_when_trying_to_compile_GNU_li=
bc_with_GNU_CC.3F
and use of -O0 is prevented with #error, but do we need to prevent using
-O1/-Og as well?

This seems currently the only issue (now when bug 29454 was fixed, there is
separate issue bug 19444 when building with -Os, patch available since 2018=
 in
https://patchwork.ozlabs.org/project/glibc/patch/20181217213618.29538-1-Mar=
tin.Jansa@gmail.com/).

As work around this commit was already reverted in OpenEmbedded and Buildro=
ot:
https://git.openembedded.org/openembedded-core/commit/?id=3D642348f9b4656a0=
90b5a272c18a6723c60100e08
https://github.com/buildroot/buildroot/commit/8d6e07e525617ee0c4ccc4f07345b=
1b1a70526f7

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