From 4a0da762d5f21b86137ff61356c4ddb338eed888 Mon Sep 17 00:00:00 2001
From: Ricardo Pardini <ricardo@pardini.net>
Date: Mon, 22 Nov 2021 11:06:50 +0100
Subject: [PATCH] [PR] dev: enable tracing of functions return trap (#3281)

- via environment variable ARMBIAN_ENABLE_CALL_TRACING=yes

Signed-off-by: Ricardo Pardini <ricardo@pardini.net>
---
 compile.sh | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/compile.sh b/compile.sh
index 6e83a3556..32f9ffa6b 100755
--- a/compile.sh
+++ b/compile.sh
@@ -20,6 +20,13 @@ grep -q "[[:space:]]" <<<"${SRC}" && { echo "\"${SRC}\" contains whitespace. Not
 
 cd "${SRC}" || exit
 
+if [[ "${ARMBIAN_ENABLE_CALL_TRACING}" == "yes" ]]; then
+	set -T # inherit return/debug traps
+	mkdir -p "${SRC}"/output/debug
+	echo -n "" > "${SRC}"/output/debug/calls.txt
+	trap 'echo "${BASH_LINENO[@]}|${BASH_SOURCE[@]}|${FUNCNAME[@]}" >> ${SRC}/output/debug/calls.txt ;' RETURN
+fi
+
 if [[ -f "${SRC}"/lib/general.sh ]]; then
 
 	# shellcheck source=lib/general.sh