GNU bug report logs - #18099
AIX TLS symbols do not make it into dynamic libraries

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Message-ID: <53D11AF2.7000905@HIDDEN>
Date: Thu, 24 Jul 2014 16:40:50 +0200
From: Thomas Jahns <jahns@HIDDEN>
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Subject: AIX TLS symbols do not make it into dynamic libraries
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--------------ms040806070609030509000705
Content-Type: text/plain; charset=ISO-8859-1
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Hello,

we encountered some problems when building an OpenMP application/library =
package
because of a missing symbol on AIX 6.1 TL8 running on an IBM Power6 syste=
m.

We traced the problem down to an omission in libtool: since the matching =
string
for AIX

  symcode=3D'[[BCDT]]'

does not include global TLS symbols (letter L of AIX nm) we faced a probl=
em with
a symbol compiled into an object and visible in the static version of the=

library being invisible in the shared library object.

In short: could someone add L to above symcode assignment (line 3748 in
build-aux/ltmain.in)?

Also when reading the AIX nm manual page[1] I see that letter A for globa=
l
absolute symbols is equally unrecognized. So it might make sense to add t=
hat as
well but have no test case for that.

Regards, Thomas

[1] Can be searched on the Internat as AIX "Commands Reference, Volume 4:=
 n
through r", I found it at

<http://www-01.ibm.com/support/knowledgecenter/api/content/ssw_aix_71/com=
=2Eibm.aix.cmds4/aixcmds4_pdf.pdf>
page 216
--=20
Thomas Jahns
DKRZ GmbH, Department: Application software

Deutsches Klimarechenzentrum
Bundesstra=DFe 45a
D-20146 Hamburg

Phone: +49-40-460094-151
Fax: +49-40-460094-270
Email: Thomas Jahns <jahns@HIDDEN>


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