| From fcd5eb9bd0e8674a6f4987a8fce7dc1ba8f9320c Mon Sep 17 00:00:00 2001 |
| From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> |
| Date: Thu, 17 Sep 2015 03:08:36 +0200 |
| Subject: [PATCH] [v3] test: add a check for FE_DIVBYZERO |
| |
| Some architectures, such as Microblaze and Nios2, currently do not |
| implement FE_DIVBYZERO, even though they have <fenv.h> and |
| feenableexcept(). This commit adds a configure.ac check to verify |
| whether FE_DIVBYZERO is defined or not, and if not, disables the |
| problematic code in test/utils.c. |
| |
| Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> |
| Signed-off-by: Marek Vasut <marex@denx.de> |
| Upstream-Status: Submitted |
| --- |
| Changes v1 -> v2: |
| |
| * Use the ac_cv_have_decl_FE_DIVBYZERO variable, which is |
| automatically set by AC_CHECK_DECL, to decide whether or not |
| HAVE_FEDIVBYZERO should be defined. |
| |
| Changes v2 -> v3: |
| |
| * Use action-if-yes of AC_CHECK_DECL as suggested in |
| http://lists.freedesktop.org/archives/pixman/2014-February/003176.html |
| --- |
| configure.ac | 5 +++++ |
| test/utils.c | 2 ++ |
| 2 files changed, 7 insertions(+) |
| |
| diff --git a/configure.ac b/configure.ac |
| index f93cc30..424bfd3 100644 |
| --- a/configure.ac |
| +++ b/configure.ac |
| @@ -891,6 +891,11 @@ if test x$have_feenableexcept = xyes; then |
| AC_DEFINE(HAVE_FEENABLEEXCEPT, 1, [Whether we have feenableexcept()]) |
| fi |
| |
| +AC_CHECK_DECL([FE_DIVBYZERO], |
| + [AC_DEFINE(HAVE_FEDIVBYZERO, 1, [Whether we have FE_DIVBYZERO])], |
| + [], |
| + [[#include <fenv.h>]]) |
| + |
| AC_CHECK_FUNC(gettimeofday, have_gettimeofday=yes, have_gettimeofday=no) |
| AC_CHECK_HEADER(sys/time.h, have_sys_time_h=yes, have_sys_time_h=no) |
| if test x$have_gettimeofday = xyes && test x$have_sys_time_h = xyes; then |
| diff --git a/test/utils.c b/test/utils.c |
| index 222d4d5..8657966 100644 |
| --- a/test/utils.c |
| +++ b/test/utils.c |
| @@ -966,9 +966,11 @@ enable_divbyzero_exceptions (void) |
| { |
| #ifdef HAVE_FENV_H |
| #ifdef HAVE_FEENABLEEXCEPT |
| +#ifdef HAVE_FEDIVBYZERO |
| feenableexcept (FE_DIVBYZERO); |
| +#endif |
| #endif |
| #endif |
| } |
| |
| void |
| -- |
| 2.1.4 |
| |