From: Foolbar <fooapr@outlook.com>
Date: Sun, 9 Jun 2024 16:44:18 +0000 (+0800)
Subject: arm64: CPU feature detection for Android
X-Git-Tag: nettle_3.10rc1~2
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=7e875de7c257cbc633295c8fb6e59462e25e57fe;p=thirdparty%2Fnettle.git

arm64: CPU feature detection for Android

getauxval() is available on Android since API 18.
https://developer.android.com/ndk/guides/cpu-features#features_using_libcs_getauxval3
---

diff --git a/fat-arm64.c b/fat-arm64.c
index 240302a6..45cce0cc 100644
--- a/fat-arm64.c
+++ b/fat-arm64.c
@@ -43,9 +43,14 @@
 #if defined(__linux__) && defined(__GLIBC__) && defined(__GLIBC_PREREQ)
 # if __GLIBC_PREREQ(2, 16)
 #  define USE_GETAUXVAL 1
-#  include <asm/hwcap.h>
-#  include <sys/auxv.h>
 # endif
+#elif __ANDROID_API__ >= 18
+# define USE_GETAUXVAL 1
+#endif
+
+#if USE_GETAUXVAL
+# include <asm/hwcap.h>
+# include <sys/auxv.h>
 #elif defined(__OpenBSD__)
 # include <sys/sysctl.h>
 # include <machine/cpu.h>