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This reverts commit 5b58a1ebd89a4f05778441814e81817c82193fa3.
This breaks all static builds earlier to gcc 10 :(
Bad testing on my side.
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Starting with GCC-10 multiple definitions of global variables by will be
rejected.
https://gcc.gnu.org/gcc-10/porting_to.html
This fixes multiple definitions of _dl_pagesize and _dl_tls_static_size
while attempting static linking.
Of course this only occurs when compiling something that requires these
symbols.
First patch submission so hopefully all done correctly.
thanks,
Lance Fredrickson
From e0686f7c03ce8e51ccffefeb6365e50311e6dd10 Mon Sep 17 00:00:00 2001
From: lancethepants <lancethepants@gmail.com>
Date: Wed, 15 Jul 2020 13:09:26 -0600
Subject: [PATCH] Starting with GCC-10 multiple definitions of global variables
by will be rejected. This fixes multiple definitions of _dl_pagesize and
_dl_tls_static_size while attempting static linking.
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Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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It's not safe to use the aux vect inside __uClibc_main if we are running
with shared libraries, because it could have been already modified.
For example, if some constructor plays with environment variables by
using unsetenv, the modifications done into the stack to unset an
environment variable, have impacts on the aux vect due to the extra NULL
entries added.
Due to this, __uClibc_main is not able to detect where the aux vect
starts, so all the entries that are used by __uClibc_main (AT_UID,
AT_EUID, AT_GID, AT_EGID, AT_PAGESZ and possibly other arch specific)
are impacted.
Same side effect on the aux vect is caused by the ld.so when running a
SUID program with some of the unsecure environment variables set, that
will be unset by the ld.so itself.
In order to fix this issue, it needs to handle aux vect entries into
__uClibc_main only if SHARED is not defined.
In SHARED case, libc refers to __dl_secure and _dl_pagesize as initialised
by the ld.so where the aux vext is still untouched.
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Reviewed-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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This patch will convert all the #ifdef USE_TLS and #if USE_TLS to
#if defined(USE_TLS) && USE_TLS.
By checking if the USE_TLS is defined before checking its value will result in
correct behavior for architectures not defining this config symbol.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Acked-by: Carmelo AMOROSO <carmelo.amoroso@st.com>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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This cuts down on a lot of noise from gcc-4.4
Signed-off-by: Ron Lee <ron@debian.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Currently we have an implementation in ld.so and libdl.a.
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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