From: David CARLIER <devnexen@gmail.com>
Date: Fri, 18 Mar 2022 21:01:00 +0000 (+0000)
Subject: macOs M1 build fix on arm cpu checks.
X-Git-Tag: 2.1.0-beta1~262
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d41f8ead569ee805b323b45fca30430cefe91cfd;p=thirdparty%2Fzlib-ng.git

macOs M1 build fix on arm cpu checks.
---

diff --git a/arch/arm/arm_features.c b/arch/arm/arm_features.c
index f6b67687..979204b8 100644
--- a/arch/arm/arm_features.c
+++ b/arch/arm/arm_features.c
@@ -11,6 +11,9 @@
 #    define ID_AA64ISAR0_CRC32_VAL ID_AA64ISAR0_CRC32
 #  endif
 #elif defined(__APPLE__)
+#  if !defined(_DARWIN_C_SOURCE)
+#    define _DARWIN_C_SOURCE /* enable types aliases (eg u_int) */
+#  endif
 #  include <sys/sysctl.h>
 #elif defined(_WIN32)
 #  include <winapifamily.h>