From 903922a7bcf06e04d9830b47bba6d65ed37304c1 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Sun, 7 Feb 2016 18:05:56 +0100
Subject: [PATCH] output_alsa: use mallopt() only on glibc

The musl C library does not provide the glibc specific mallopt()
functionality, so use it only when __GLIBC__ is defined.

uClibc pretends to be glibc by defining __GLIBC__, but it implements
mallopt(), so it works fine.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 output_alsa.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/output_alsa.c b/output_alsa.c
index aa01560..44c9fc7 100644
--- a/output_alsa.c
+++ b/output_alsa.c
@@ -862,8 +862,10 @@ void output_init_alsa(log_level level, const char *device, unsigned output_buf_s
 		LOG_INFO("memory locked");
 	}
 
+#ifdef __GLIBC__
 	mallopt(M_TRIM_THRESHOLD, -1);
 	mallopt(M_MMAP_MAX, 0);
+#endif
 
 	touch_memory(silencebuf, MAX_SILENCE_FRAMES * BYTES_PER_FRAME);
 	touch_memory(outputbuf->buf, outputbuf->size);
-- 
2.6.4