From 3a7f96db56cc9821055cbc769d3065db86b8b4c9 Mon Sep 17 00:00:00 2001
From: Julien Voisin <jvoisin@users.noreply.github.com>
Date: Mon, 7 Feb 2022 07:56:15 +0100
Subject: [PATCH] mallinfo is only defined on glibc and android (#764)

It currently prevents compilation under musl:

```
[ 90%] Building CXX object src/tbbmalloc_proxy/CMakeFiles/tbbmalloc_proxy.dir/proxy.cpp.o
/__w/mimalloc-bench/mimalloc-bench/extern/tbb/src/tbbmalloc_proxy/proxy.cpp:263:26: error: return type 'struct mallinfo' is incomplete
  263 | struct mallinfo mallinfo() __THROW
      |                          ^
compilation terminated due to -Wfatal-errors.
``
---
 src/tbbmalloc_proxy/proxy.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/tbbmalloc_proxy/proxy.cpp b/src/tbbmalloc_proxy/proxy.cpp
index e58e55e0b8..23b9c19c1c 100644
--- a/src/tbbmalloc_proxy/proxy.cpp
+++ b/src/tbbmalloc_proxy/proxy.cpp
@@ -260,6 +260,7 @@ int mallopt(int /*param*/, int /*value*/) __THROW
     return 1;
 }
 
+#if defined(__GLIBC__) || defined(__ANDROID__)
 struct mallinfo mallinfo() __THROW
 {
     struct mallinfo m;
@@ -267,6 +268,7 @@ struct mallinfo mallinfo() __THROW
 
     return m;
 }
+#endif
 
 #if __ANDROID__
 // Android doesn't have malloc_usable_size, provide it to be compatible