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From 03bf456cb5b65ff7cfabfab3758ca8f3c6816556 Mon Sep 17 00:00:00 2001
From: Cyril Hrubis <chrubis@suse.cz>
Date: Thu, 4 Sep 2014 11:28:55 +0200
Subject: [PATCH] realtime: Fix exp10 check.
The parameter to exp10() function was constant and because of that it
was substituted by a constant at the compile time.
This patch passes volatile float as the parameter and also adds -lm to
the LIBS which is needed to link the test.
Reported-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
---
testcases/realtime/m4/ltp-exp10.m4 | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/testcases/realtime/m4/ltp-exp10.m4 b/testcases/realtime/m4/ltp-exp10.m4
index 4fe7091..84a3d9b 100644
--- a/testcases/realtime/m4/ltp-exp10.m4
+++ b/testcases/realtime/m4/ltp-exp10.m4
@@ -24,10 +24,14 @@ AC_DEFUN([LTP_CHECK_EXP10],[
AH_TEMPLATE(HAVE_EXP10,
[Define to 1 if you have 'exp10' function.])
AC_MSG_CHECKING([for exp10])
+backup_ldlibs="$LIBS"
+LIBS+=" -lm"
AC_TRY_LINK([#define _GNU_SOURCE
#include <math.h>],
[
- exp10(0.00);
+ volatile float val;
+ exp10(val);
],
AC_DEFINE(HAVE_EXP10) AC_MSG_RESULT(yes), AC_MSG_RESULT(no))
+LIBS="$backup_ldlibs"
])
--
1.8.5.5
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