From 6767bde989e1a9b0f7e3b8665c672ac5345c036d Mon Sep 17 00:00:00 2001
From: Mike Brady <4265913+mikebrady@users.noreply.github.com>
Date: Wed, 7 Sep 2022 13:49:16 +0100
Subject: [PATCH] Add AC_CHECK_LIB for gcrypt in case PKG_CHECK_MODULES fails
 to find it.

---
 configure.ac | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index fc12ce99..ac965045 100644
--- a/configure.ac
+++ b/configure.ac
@@ -416,8 +416,13 @@ if test "x$with_airplay_2" = "xyes" ; then
     ])
   ])
   PKG_CHECK_MODULES([libsodium], [libsodium],[CFLAGS="${libsodium_CFLAGS} ${CFLAGS}" LIBS="${libsodium_LIBS} ${LIBS}"],[AC_MSG_ERROR(AirPlay 2 support requires libsodium -- libsodium-dev suggested)])
-  PKG_CHECK_MODULES([libgcrypt], [libgcrypt],[CFLAGS="${libgcrypt_CFLAGS} ${CFLAGS}" LIBS="${libgcrypt_LIBS} ${LIBS}"],[AC_MSG_ERROR(AirPlay 2 support requires libgcrypt -- libgcrypt-dev suggested)])
-  AC_CHECK_LIB([avutil],[av_malloc], [], [AC_MSG_ERROR([Airplay 2 support requires libavutil -- libavutil-dev suggested])])
+  PKG_CHECK_MODULES([libgcrypt], [libgcrypt],[CFLAGS="${libgcrypt_CFLAGS} ${CFLAGS}" LIBS="${libgcrypt_LIBS} ${LIBS}"],[
+    AC_CHECK_LIB([gcrypt], [gcry_control], [], [
+      AC_MSG_ERROR([Airplay 2 support requires libgcrypt -- libgcrypt-dev suggested])
+    ])
+  ])
+  PKG_CHECK_MODULES([libavutil], [libavutil],[CFLAGS="${libavutil_CFLAGS} ${CFLAGS}" LIBS="${libavutil_LIBS} ${LIBS}"],[
+      AC_MSG_ERROR(AirPlay 2 support requires libavutil -- libavutil-dev suggested)])
   PKG_CHECK_MODULES([libavcodec], [libavcodec],[CFLAGS="${libavcodec_CFLAGS} ${CFLAGS}" LIBS="${libavcodec_LIBS} ${LIBS}"],[
       AC_MSG_ERROR(AirPlay 2 support requires libavcodec -- libavcodec-dev suggested)])
   AC_CHECK_LIB([avformat],[avformat_new_stream], [], [AC_MSG_ERROR([AirPlay 2 support requires libavformat -- libavformat-dev suggested])])