From https://github.com/breakfastquay/rubberband/pull/126 Mon Sep 17 00:00:00 2001
From: Nicolas PARLANT <nicolas.parlant@parhuet.fr>
Date: Sun, 27 Jul 2025 15:53:17 +0200
Subject: [PATCH] missing include cstdlib

Fix an error with libcxx-21

>In file included from ../rubberband-4.0.0/src/common/mathmisc.cpp:24:
>../rubberband-4.0.0/src/common/mathmisc.h:58:1:
>error: unknown type name 'size_t'; did you mean 'std::size_t'?

Signed-off-by: Nicolas PARLANT <nicolas.parlant@parhuet.fr>
--- a/src/common/mathmisc.h
+++ b/src/common/mathmisc.h
@@ -26,6 +26,8 @@
 
 #include "sysutils.h"
 
+#include <cstdlib>
+
 #ifndef M_PI
 #define M_PI 3.14159265358979323846
 #endif // M_PI