From efe73aad413d4e910a9a168d35a05c4ee0afdbad Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Mon, 28 Aug 2023 09:38:21 +0200
Subject: [PATCH] configure.ac: incl -latomic on 32b aarch64 builds

\-latomic is needed to prevent errors:
```
undefined reference to `__atomic_load_8'
````
even if target_cpu is aarch64 but building on 32-bit Raspberry Pi OS
(which is still default).
---
 configure.ac | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index b462368ef..06c6179c6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -208,7 +208,8 @@ if test $target_cpu = x86_64 -o $target_cpu = i686
 then
         ARCH=${ARCH--msse4.1}
 fi
-if test $target_cpu = armv7l
+if test $target_cpu = armv7l || { test $target_cpu = aarch64 && \
+test $ac_cv_sizeof_int_p -eq 4; }
 then
         LIBS="${LIBS:+$LIBS }-latomic" # needed for atomic_uint64_t
 fi