From a83f09f1fbdbb60cdc758e32df88a11c9779baf7 Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Thu, 27 Oct 2022 08:53:39 +0200
Subject: [PATCH] configure: add -latomic lib for armv7l

32-bit arm require -latomic for 64-bit atomic variables handling

Fixes failed run:

    https://github.com/CESNET/UltraGrid/actions/runs/3329756675
---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index a96631c76..6cb22279a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -221,6 +221,10 @@ if test $target_cpu = x86_64 -o $target_cpu = i686
 then
         ARCH=${ARCH--msse4.1}
 fi
+if test $target_cpu = armv7l
+then
+        LIBS="${LIBS:+$LIBS }-latomic" # needed for atomic_uint64_t
+fi
 CFLAGS="$CFLAGS${ARCH+ $ARCH}"
 CXXFLAGS="$CXXFLAGS${ARCH+ $ARCH}"
 LDFLAGS="$LDFLAGS${ARCH+ $ARCH}"