From c91e62dd375637e1d029af5385ce633a74f98712 Mon Sep 17 00:00:00 2001
From: Yuriy Chernyshov <georgthegreat@gmail.com>
Date: Wed, 5 Jan 2022 21:19:50 +0300
Subject: [PATCH] #include <features.h> as requested

---
 src/jemalloc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/jemalloc.c b/src/jemalloc.c
index 990855c4..fb435248 100644
--- a/src/jemalloc.c
+++ b/src/jemalloc.c
@@ -3231,6 +3231,8 @@ je_valloc(size_t size) {
  * passed an extra argument for the caller return address, which will be
  * ignored.
  */
+#include <features.h> // defines __GLIBC__ if we are compiling against glibc
+
 JEMALLOC_EXPORT void (*__free_hook)(void *ptr) = je_free;
 JEMALLOC_EXPORT void *(*__malloc_hook)(size_t size) = je_malloc;
 JEMALLOC_EXPORT void *(*__realloc_hook)(void *ptr, size_t size) = je_realloc;