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<title>buildroot/package/libunwind, branch 2016.11</title>
<subtitle>OpenPOWER buildroot sources</subtitle>
<id>https://git.raptorcs.com/git/buildroot/atom?h=2016.11</id>
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<updated>2016-09-08T20:15:15+00:00</updated>
<entry>
<title>arch: remove support for sh64</title>
<updated>2016-09-08T20:15:15+00:00</updated>
<author>
<name>Gustavo Zacarias</name>
<email>gustavo@zacarias.com.ar</email>
</author>
<published>2016-09-08T18:38:57+00:00</published>
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<id>urn:sha1:4338a319b72570e433fd7484f8a95e1e0e978941</id>
<content type='text'>
It's been deprecated for quite some time now.

Signed-off-by: Gustavo Zacarias &lt;gustavo@zacarias.com.ar&gt;
Signed-off-by: Thomas Petazzoni &lt;thomas.petazzoni@free-electrons.com&gt;
</content>
</entry>
<entry>
<title>libunwind: fix architecture dependencies</title>
<updated>2016-08-07T20:58:32+00:00</updated>
<author>
<name>Thomas Petazzoni</name>
<email>thomas.petazzoni@free-electrons.com</email>
</author>
<published>2016-08-07T08:46:38+00:00</published>
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<id>urn:sha1:68d399fbddc5da909863971814856d7e00e7649a</id>
<content type='text'>
Due to a misplaced parenthesis, the libunwind dependency were
incorrect. Indeed, they were of the form:

 default y if LIBC_TYPE &amp;&amp; (arm dependency) || (list of other architectures)

Which meant that that the LIBC_TYPE dependency was not taken into
account for the "other architectures". This commit changes that to:

 default y if LIBC_TYPE &amp;&amp; ((arm dependency) || list of other architectures)

Without this fix, libunwind can be selected for example on
PowerPC/uClibc configurations, while only PowerPC/glibc should be
allowed. This fixes:

  http://autobuild.buildroot.net/results/96c53ff240dcd68fcc9e3d32c4026c9886edcbe7/

Similarly, it also fixes cases where SuperH/uClibc was allowed, while
only SuperH/glibc should be allowed. This fixes:

  http://autobuild.buildroot.net/results/95a6cca21aea9914ba8bb3f571760fc054c53ecd/

Signed-off-by: Thomas Petazzoni &lt;thomas.petazzoni@free-electrons.com&gt;
Reviewed-by: "Yann E. MORIN" &lt;yann.morin.1998@free.fr&gt;
Signed-off-by: Thomas Petazzoni &lt;thomas.petazzoni@free-electrons.com&gt;
</content>
</entry>
<entry>
<title>libunwind: needs ARM instruction support</title>
<updated>2016-07-23T20:58:44+00:00</updated>
<author>
<name>Gustavo Zacarias</name>
<email>gustavo@zacarias.com.ar</email>
</author>
<published>2016-07-23T15:24:34+00:00</published>
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<id>urn:sha1:3a10967c7f0d29d600befc2c14a5859726ea6aa0</id>
<content type='text'>
Fixes:
http://autobuild.buildroot.net/results/4cf/4cf517cd81d3aa5da26848edaba5df0bfbab2c77/

Signed-off-by: Gustavo Zacarias &lt;gustavo@zacarias.com.ar&gt;
Signed-off-by: Thomas Petazzoni &lt;thomas.petazzoni@free-electrons.com&gt;
</content>
</entry>
<entry>
<title>libunwind: fix C library dependency</title>
<updated>2016-02-01T18:32:42+00:00</updated>
<author>
<name>Thomas Petazzoni</name>
<email>thomas.petazzoni@free-electrons.com</email>
</author>
<published>2016-01-27T21:25:23+00:00</published>
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<id>urn:sha1:1da65232ecd211cd3e55adfdc8b2fbf0cf27af90</id>
<content type='text'>
The libunwind package currently dependency on glibc *or* uclibc
snapshot. However, we are going to remove the support for uclibc
snapshot, and uClibc-ng has equivalent functionality as uclibc
snapshot. Moreover, musl is also capable of building libunwind for
certain architectures.

Therefore, this commit reworks the architecture dependencies of
libunwind, to make it available on all architectures for which it is
supported, depending on the capabilities of the different C libraries,
and the implementation of libunwind on each architecture.

On some architectures, libunwind uses the C library *context()
functions, which are not provided by musl at all, and not provided by
uClibc on all architectures. But on some other architectures,
libunwind does not use the C library *context() functions, which
explains why it can be built with musl on such architectures.

Signed-off-by: Thomas Petazzoni &lt;thomas.petazzoni@free-electrons.com&gt;
Signed-off-by: Peter Korsgaard &lt;peter@korsgaard.com&gt;
</content>
</entry>
<entry>
<title>libunwind: add hash file</title>
<updated>2015-07-28T20:32:57+00:00</updated>
<author>
<name>Gustavo Zacarias</name>
<email>gustavo@zacarias.com.ar</email>
</author>
<published>2015-07-28T18:39:45+00:00</published>
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<id>urn:sha1:ae491ec2f6618fe8e5c4f3f935cbf333431b316d</id>
<content type='text'>
Signed-off-by: Gustavo Zacarias &lt;gustavo@zacarias.com.ar&gt;
Signed-off-by: Thomas Petazzoni &lt;thomas.petazzoni@free-electrons.com&gt;
</content>
</entry>
<entry>
<title>libunwind: fix comment dependencies</title>
<updated>2014-11-16T23:22:47+00:00</updated>
<author>
<name>Peter Korsgaard</name>
<email>peter@korsgaard.com</email>
</author>
<published>2014-11-16T23:22:47+00:00</published>
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<id>urn:sha1:5a99682127b02f0d792390311956e977a2718fa2</id>
<content type='text'>
Comment should be shown when no threads OR not uclibc-snapshot / glibc, not
AND.

Signed-off-by: Peter Korsgaard &lt;peter@korsgaard.com&gt;
</content>
</entry>
<entry>
<title>package/libunwind: link to libgcc_s, not libgcc</title>
<updated>2014-11-16T23:11:51+00:00</updated>
<author>
<name>Yann E. MORIN</name>
<email>yann.morin.1998@free.fr</email>
</author>
<published>2014-11-16T13:29:55+00:00</published>
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<id>urn:sha1:261d8bfcd70542da9275f401c9981c16b7290686</id>
<content type='text'>
Backport a fix from upstream to link against libgcc_s instead of libgcc.

Fixes ltrace build failures:
    http://autobuild.buildroot.net/results/a0c/a0c132f8cdea2c34ceff27606764a60c2853f644/
    http://autobuild.buildroot.net/results/67f/67fbd04d6ae187861fa1bf84d3df1877c7be6fb2/
    http://autobuild.buildroot.net/results/0ca/0ca564101b870e5953acb66ac832ce9e23198392/
    ...

Signed-off-by: "Yann E. MORIN" &lt;yann.morin.1998@free.fr&gt;
Signed-off-by: Peter Korsgaard &lt;peter@korsgaard.com&gt;
</content>
</entry>
<entry>
<title>libunwind: depend on libatomic_ops when available</title>
<updated>2014-05-16T14:11:20+00:00</updated>
<author>
<name>Baruch Siach</name>
<email>baruch@tkos.co.il</email>
</author>
<published>2014-05-15T18:42:41+00:00</published>
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<id>urn:sha1:34aa3f2354ffcdcf545567d9455ac2e217ca92ff</id>
<content type='text'>
Signed-off-by: Baruch Siach &lt;baruch@tkos.co.il&gt;
Acked-by: Thomas Petazzoni &lt;thomas.petazzoni@free-electrons.com&gt;
Signed-off-by: Peter Korsgaard &lt;peter@korsgaard.com&gt;
</content>
</entry>
<entry>
<title>libunwind: add patch to fix behavior for ARM &lt; v6</title>
<updated>2014-05-14T07:24:53+00:00</updated>
<author>
<name>Thomas Petazzoni</name>
<email>thomas.petazzoni@free-electrons.com</email>
</author>
<published>2014-05-13T21:47:37+00:00</published>
<link rel='alternate' type='text/html' href='https://git.raptorcs.com/git/buildroot/commit/?id=5035b7819ccda95f2b1bbc5fb99175f5dbe26b37'/>
<id>urn:sha1:5035b7819ccda95f2b1bbc5fb99175f5dbe26b37</id>
<content type='text'>
Since libatomic_ops does not implement real atomic operations for
ARMv4 and ARMv5, libunwind must define AO_REQUIRE_CAS do indicate it
requires compare-and-swap operations, even if not available as real
atomic operations for the current architecture. In this case,
libatomic_ops will rely on emulated atomic operations, which also
require linking against libatomic_ops, which was until now not done by
libunwind.

This fixes the mysterious ltrace build issue:

  http://autobuild.buildroot.org/results/e1b/e1b330abfa2d80f3f30bc3359428ea429c690eb8/

Signed-off-by: Thomas Petazzoni &lt;thomas.petazzoni@free-electrons.com&gt;
Cc: Baruch Siach &lt;baruch@tkos.co.il&gt;
Signed-off-by: Peter Korsgaard &lt;peter@korsgaard.com&gt;
</content>
</entry>
<entry>
<title>libunwind: needs set/getcontext, which only got added to uClibc post-0.9.33</title>
<updated>2014-04-06T22:35:46+00:00</updated>
<author>
<name>Peter Korsgaard</name>
<email>peter@korsgaard.com</email>
</author>
<published>2014-04-06T22:34:42+00:00</published>
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<id>urn:sha1:2848a3009e71987f9d3ff0cfe5a9f791ac05f3c4</id>
<content type='text'>
Fixes http://autobuild.buildroot.net/results/3e8/3e8670ab1454118baf1e4a5ca632d45963ba3781/

Signed-off-by: Peter Korsgaard &lt;peter@korsgaard.com&gt;
</content>
</entry>
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