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boost: fix build failures on NIOSII and Microblaze

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The fenv support provided by glibc on NIOSII and Microblaze is not
sufficient for Boost, causing the same build failures as the ones we had
with uClibc.

To address this, we adapt (and rename) the existing
0006-uclibc-fenv.patch by forcefully disabling fenv support in Boost on
NIOSII and Microblaze, in addition to the existing uClibc exclusion.

Fixes (for NIOSII):

  http://autobuild.buildroot.net/results/9b8c5d2cd31d63ae70b41d1434868c83e65b8423/

Fixes (for Microblaze):

  http://autobuild.buildroot.net/results/0b9db4c5cfd80d75eb620dbf7a6201faed7230a1/

Cc: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Thomas Petazzoni 2016-05-17 15:00:29 +02:00 committed by Peter Korsgaard
parent c5a153b668
commit f01f2cde09
2 changed files with 37 additions and 26 deletions
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37
package/boost/0006-fenv.patch Normal file
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@ -0,0 +1,37 @@
Disable fenv.h in certain configurations
The boost build system does not properly test whether fenv.h is
available, and if it is, if it supports all the features used by
Boost. This causes build failures with uClibc (reported upstream at
https://svn.boost.org/trac/boost/ticket/11756) but also with glibc on
specific architectures that don't have a full fenv implementation,
such as NIOSII or Microblaze.
To address this, we forcefully disable the use of fenv support in the
affected configurations.
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
[Thomas: add Microblaze/NIOSII exclusions.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Index: b/boost/config/platform/linux.hpp
===================================================================
--- a/boost/config/platform/linux.hpp
+++ b/boost/config/platform/linux.hpp
@@ -47,6 +47,16 @@
#endif
//
+// uClibc has no support for fenv.h, and also a few architectures
+// don't have fenv.h support at all (or incomplete support) even with
+// glibc.
+
+//
+#if defined(__UCLIBC__) || defined(__nios2__) || defined(__microblaze__)
+# define BOOST_NO_FENV_H
+#endif
+
+//
// If glibc is past version 2 then we definitely have
// gettimeofday, earlier versions may or may not have it:
//

26
package/boost/0006-uclibc-fenv.patch
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@ -1,26 +0,0 @@
Disable fenv.h support for uClibc-based toolchains.
The boost build system does not recognize the fact that fenv.h is an
optional module in uClibc and tries to use it even if UCLIBC_HAS_FENV
is disabled. This patch disables fenv support completely when compiling
with a uClibc-based toolchain. Bug was reported upstream:
https://svn.boost.org/trac/boost/ticket/11756
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
--- boost_1_60_0.org/boost/config/platform/linux.hpp 2015-12-08 19:55:19.000000000 +0100
+++ boost_1_60_0/boost/config/platform/linux.hpp 2016-02-06 12:35:25.692754553 +0100
@@ -47,6 +47,13 @@
#endif
//
+// uClibc has no support for fenv.h
+//
+#if defined(__UCLIBC__)
+# define BOOST_NO_FENV_H
+#endif
+
+//
// If glibc is past version 2 then we definitely have
// gettimeofday, earlier versions may or may not have it:
//