From 62a41abffa028a3a4c4ae0803d48c559a14e97f1 Mon Sep 17 00:00:00 2001
From: Bernd Kuhls <bernd.kuhls@t-online.de>
Date: Sun, 7 Feb 2016 13:54:10 +0100
Subject: [PATCH] configure.ac: use pow() instead of matherr() for libm check

In certain configurations of uClibc, the matherr() function may not be
provided by the C library, which makes the current configure.ac check
for libm fail. However, iprutils does not use matherr(), so using this
function for the test makes little sense.

This patch adjusts configure.ac to test for pow() instead, which is
actually used by iprutils, and more commonly available, including in
uClibc.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c1a4f70..e430554 100644
--- a/configure.ac
+++ b/configure.ac
@@ -129,7 +129,7 @@ save_LIBS="$LIBS"
 AC_CHECK_LIB([ncurses], [curses_version], [],
 	     [AC_ERROR("libncurses not found.")])
 AC_CHECK_LIB([form], [free_form], [], [AC_ERROR("libform not found.")])
-AC_CHECK_LIB([m], [matherr], [], [AC_ERROR("libm not found.")])
+AC_CHECK_LIB([m], [pow], [], [AC_ERROR("libm not found.")])
 AC_CHECK_LIB([menu], [new_menu], [], [AC_ERROR("libmenu not found.")])
 AC_CHECK_LIB([panel], [show_panel], [], [AC_ERROR("libpanel not found.")])
 IPRCONFIG_LIBS="$LIBS"
-- 
2.6.4