From 02406e56542badb7512991a15bd92d649e92491c Mon Sep 17 00:00:00 2001
From: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Date: Wed, 8 May 2019 17:35:23 +0200
Subject: [PATCH] configure: fail --enable-log-bt if it's not available

Change-Id: Id8c5eca81124f06b62087bd64fb8a20ae8c69d28
Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453710
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
---
 configure | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/configure b/configure
index 27cab7090..083101ae5 100755
--- a/configure
+++ b/configure
@@ -520,6 +520,15 @@ if [[ "${CONFIG[ISCSI_INITIATOR]}" = "y" ]]; then
 	fi
 fi
 
+if [[ "${CONFIG[LOG_BACKTRACE]}" = "y" ]]; then
+	if ! echo -e '#include <libunwind.h>\nint main(void) { return 0; }\n' \
+		| $BUILD_CMD -lunwind - 2>/dev/null; then
+		echo --enable-log-bt requires libunwind.
+		echo Please install then re-run this script.
+		exit 1
+	fi
+fi
+
 if [[ "${CONFIG[OCF]}" = "y" ]]; then
 	# If OCF_PATH is a file, assume it is a library and use it to compile with
 	if [ -f ${CONFIG[OCF_PATH]} ]; then