From 6d40818ec098a8ff8b566bdc539592e20d3ca247 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege@collabora.co.uk>
Date: Wed, 7 Oct 2009 07:28:15 +0200
Subject: [PATCH] streamvolume: Define cbrt() if it's not available

Fixes build on Win32, bug #597537.
---
 configure.ac                           | 6 ++++++
 gst-libs/gst/interfaces/streamvolume.c | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/configure.ac b/configure.ac
index 0c5b572341..5245fc4b72 100644
--- a/configure.ac
+++ b/configure.ac
@@ -202,6 +202,12 @@ AX_CREATE_STDINT_H
 dnl *** checks for functions ***
 AC_CHECK_FUNCS([localtime_r gmtime_r])
 
+dnl *** checks for math functions ***
+LIBS_SAVE=$LIBS
+LIBS="$LIBS $LIBM"
+AC_CHECK_FUNCS(cbrt)
+LIBS=$LIBS_SAVE
+
 dnl *** checks for types/defines ***
 
 dnl Check for FIONREAD ioctl declaration
diff --git a/gst-libs/gst/interfaces/streamvolume.c b/gst-libs/gst/interfaces/streamvolume.c
index 4a65f15b27..a3efe468cb 100644
--- a/gst-libs/gst/interfaces/streamvolume.c
+++ b/gst-libs/gst/interfaces/streamvolume.c
@@ -52,6 +52,10 @@
 #include "streamvolume.h"
 #include <math.h>
 
+#ifndef HAVE_CBRT
+#define cbrt(x) (pow(abs(x),1.0/3.0))
+#endif
+
 static void
 gst_stream_volume_class_init (GstStreamVolumeInterface * iface)
 {