From a54117377151356c1e2494ba1febc245cb71b51c Mon Sep 17 00:00:00 2001
From: Lasse Collin <lasse.collin@tukaani.org>
Date: Wed, 10 Apr 2024 22:21:51 +0300
Subject: [PATCH] Build: If ARM64 feature detection func is found, stop looking
 for others

This can speed up configure a tiny bit.

Fixes: c5f6d79cc9515a7f22d7ea4860c6cc394b295732
(cherry picked from commit 308a9af85400b0e2019f0f012c8354e831d06d65)
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index b6f9f8b7..b8b52c9e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1091,7 +1091,7 @@ uint32_t my_crc(uint32_t a, uint64_t b)
 # The C code is responsible for checking defined(__APPLE__) before using
 # sysctlbyname("hw.optional.armv8_crc32", ...).
 AS_IF([test "x$enable_arm64_crc32" = xyes], [
-	AC_CHECK_FUNCS([getauxval elf_aux_info sysctlbyname])
+	AC_CHECK_FUNCS([getauxval elf_aux_info sysctlbyname], [break])
 ])