| 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: |
| // |
