From c6dcf6b714501768ab7ea293e75d945be0eec188 Mon Sep 17 00:00:00 2001
From: Bastien Nocera <hadess@hadess.net>
Date: Wed, 17 Sep 2025 01:00:14 +0200
Subject: [PATCH] transport: Fix build with VCP support disabled

$ $ ./bootstrap-configure --enable-a2dp --enable-avrcp --enable-experimental --enable-asha --disable-vcp && make
[...]
/usr/bin/ld: profiles/audio/bluetoothd-transport.o: in function `transport_bap_set_volume':
profiles/audio/transport.c:2275:(.text.transport_bap_set_volume+0x11): undefined reference to `bt_audio_vcp_set_volume'
/usr/bin/ld: profiles/audio/bluetoothd-transport.o: in function `transport_bap_get_volume':
profiles/audio/transport.c:2266:(.text.transport_bap_get_volume+0x9): undefined reference to `bt_audio_vcp_get_volume'

Reported-by: Arun Raghavan <arun@accosted.net>
Fixes: af8266af13c8 ("audio: connect VCP profile client to MediaTransport")
---
 configure.ac               | 3 +++
 profiles/audio/transport.c | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/configure.ac b/configure.ac
index 955908621..9f1a96600 100644
--- a/configure.ac
+++ b/configure.ac
@@ -215,6 +215,9 @@ AM_CONDITIONAL(CCP, test "${enable_ccp}" != "no")
 AC_ARG_ENABLE(vcp, AS_HELP_STRING([--disable-vcp],
 		[disable VCP profile]), [enable_vcp=${enableval}])
 AM_CONDITIONAL(VCP, test "${enable_vcp}" != "no")
+if test "${enable_vcp}" != "no"; then
+	AC_DEFINE(HAVE_VCP, 1, [Define to 1 if you have VCP support.])
+fi
 
 AC_ARG_ENABLE(micp, AS_HELP_STRING([--disable-micp],
 		[disable MICP profile]), [enable_micp=${enableval}])
diff --git a/profiles/audio/transport.c b/profiles/audio/transport.c
index ab149bcd7..2682a2e4e 100644
--- a/profiles/audio/transport.c
+++ b/profiles/audio/transport.c
@@ -2263,16 +2263,24 @@ static void bap_connecting(struct bt_bap_stream *stream, bool state, int fd,
 
 static int transport_bap_get_volume(struct media_transport *transport)
 {
+#ifdef HAVE_VCP
 	return bt_audio_vcp_get_volume(transport->device);
+#else
+	return -ENODEV;
+#endif /* HAVE_VCP */
 }
 
 static int transport_bap_set_volume(struct media_transport *transport,
 								int volume)
 {
+#ifdef HAVE_VCP
 	if (volume < 0 || volume > 255)
 		return -EINVAL;
 
 	return bt_audio_vcp_set_volume(transport->device, volume) ? 0 : -EIO;
+#else
+	return -ENODEV;
+#endif /* HAVE_VCP */
 }
 
 static void transport_bap_destroy(void *data)
-- 
2.47.3