Gentoo-bug: https://bugs.gentoo.org/905127
Upstream issue: https://github.com/supercollider/supercollider/issues/6021

diff --git a/common/SC_PaUtils.cpp b/common/SC_PaUtils.cpp
index e0f562c..9e45c63 100644
--- a/common/SC_PaUtils.cpp
+++ b/common/SC_PaUtils.cpp
@@ -3,6 +3,7 @@
 #include "SC_PaUtils.hpp"
 #include <cstring>
 #include <cstdio>
+#include <cstdint>
 
 #ifdef __APPLE__
 #    include <pa_mac_core.h>