diff --git a/.arclint b/.arclint
--- a/.arclint
+++ b/.arclint
@@ -155,6 +155,10 @@
         },
         "shellcheck": {
             "type": "shellcheck",
+            "flags": [
+                "--external-sources",
+                "--source-path=SCRIPTDIR"
+            ],
             "include": "(\\.sh$)",
             "exclude": [
                 "(^src/(secp256k1|univalue)/)"
diff --git a/contrib/teamcity/build-configurations.sh b/contrib/teamcity/build-configurations.sh
--- a/contrib/teamcity/build-configurations.sh
+++ b/contrib/teamcity/build-configurations.sh
@@ -32,70 +32,10 @@
 THREADS=$(nproc || sysctl -n hw.ncpu)
 export THREADS
 
-DEVTOOLS_DIR="${TOPLEVEL}/contrib/devtools"
 CMAKE_PLATFORMS_DIR="${TOPLEVEL}/cmake/platforms"
 
-# Base directories for sanitizer related files
-SAN_SUPP_DIR="${TOPLEVEL}/test/sanitizer_suppressions"
-SAN_LOG_DIR="/tmp/sanitizer_logs"
-
-# Create the log directory if it doesn't exist and clear it
-mkdir -p "${SAN_LOG_DIR}"
-rm -rf "${SAN_LOG_DIR:?}"/*
-
-# Needed options are set by the build system, add the log path to all runs
-export ASAN_OPTIONS="log_path=${SAN_LOG_DIR}/asan.log"
-export LSAN_OPTIONS="log_path=${SAN_LOG_DIR}/lsan.log"
-export TSAN_OPTIONS="log_path=${SAN_LOG_DIR}/tsan.log"
-export UBSAN_OPTIONS="log_path=${SAN_LOG_DIR}/ubsan.log"
-
-run_test_bitcoin() {
-  # Usage: run_test_bitcoin "Context as string" [arguments...]
-  ninja test_bitcoin
-
-  TEST_BITCOIN_JUNIT="junit_results_unit_tests${1:+_${1// /_}}.xml"
-  TEST_BITCOIN_SUITE_NAME="Bitcoin ABC unit tests${1:+ $1}"
-
-  # More sanitizer options are needed to run the executable directly
-  ASAN_OPTIONS="malloc_context_size=0:${ASAN_OPTIONS}" \
-  LSAN_OPTIONS="suppressions=${SAN_SUPP_DIR}/lsan:${LSAN_OPTIONS}" \
-  TSAN_OPTIONS="suppressions=${SAN_SUPP_DIR}/tsan:${TSAN_OPTIONS}" \
-  UBSAN_OPTIONS="suppressions=${SAN_SUPP_DIR}/ubsan:print_stacktrace=1:halt_on_error=1:${UBSAN_OPTIONS}" \
-  ./src/test/test_bitcoin \
-    --logger=HRF:JUNIT,message,${TEST_BITCOIN_JUNIT} \
-    -- \
-    -testsuitename="${TEST_BITCOIN_SUITE_NAME}" \
-    "${@:2}"
-}
-
-# Facility to print out sanitizer log outputs to the build log console
-print_sanitizers_log() {
-  for log in "${SAN_LOG_DIR}"/*.log.*
-  do
-    if [ -f "${log}" ]; then
-      echo "*** Output of ${log} ***"
-      cat "${log}"
-    fi
-  done
-}
-trap "print_sanitizers_log" ERR
-
-
-build_with_cmake() {
-  CMAKE_FLAGS="${CMAKE_FLAGS[*]}" "${DEVTOOLS_DIR}"/build_cmake.sh "$@"
-}
-
-build_with_autotools() {
-  CONFIGURE_FLAGS="${CONFIGURE_FLAGS[*]}" "${DEVTOOLS_DIR}"/build_autotools.sh "$@"
-}
-
-run_ibd() {
-  "${TOPLEVEL}"/contrib/teamcity/ibd.sh "$@"
-}
-
-build_static_dependencies() {
-  "${DEVTOOLS_DIR}"/build_depends.sh
-}
+# shellcheck source=ci-fixture.sh
+source "${TOPLEVEL}/contrib/teamcity/ci-fixture.sh"
 
 case "$ABC_BUILD_NAME" in
   build-asan)
diff --git a/contrib/teamcity/ci-fixture.sh b/contrib/teamcity/ci-fixture.sh
new file mode 100755
--- /dev/null
+++ b/contrib/teamcity/ci-fixture.sh
@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+
+export LC_ALL=C.UTF-8
+
+set -euxo pipefail
+
+: "${TOPLEVEL:=$(git rev-parse --show-toplevel)}"
+
+DEVTOOLS_DIR="${TOPLEVEL}/contrib/devtools"
+
+# Base directories for sanitizer related files
+SAN_SUPP_DIR="${TOPLEVEL}/test/sanitizer_suppressions"
+SAN_LOG_DIR="/tmp/sanitizer_logs"
+
+# Create the log directory if it doesn't exist and clear it
+mkdir -p "${SAN_LOG_DIR}"
+rm -rf "${SAN_LOG_DIR:?}"/*
+
+# Needed options are set by the build system, add the log path to all runs
+export ASAN_OPTIONS="log_path=${SAN_LOG_DIR}/asan.log"
+export LSAN_OPTIONS="log_path=${SAN_LOG_DIR}/lsan.log"
+export TSAN_OPTIONS="log_path=${SAN_LOG_DIR}/tsan.log"
+export UBSAN_OPTIONS="log_path=${SAN_LOG_DIR}/ubsan.log"
+
+run_test_bitcoin() {
+  # Usage: run_test_bitcoin "Context as string" [arguments...]
+  ninja test_bitcoin
+
+  TEST_BITCOIN_JUNIT="junit_results_unit_tests${1:+_${1// /_}}.xml"
+  TEST_BITCOIN_SUITE_NAME="Bitcoin ABC unit tests${1:+ $1}"
+
+  # More sanitizer options are needed to run the executable directly
+  ASAN_OPTIONS="malloc_context_size=0:${ASAN_OPTIONS}" \
+  LSAN_OPTIONS="suppressions=${SAN_SUPP_DIR}/lsan:${LSAN_OPTIONS}" \
+  TSAN_OPTIONS="suppressions=${SAN_SUPP_DIR}/tsan:${TSAN_OPTIONS}" \
+  UBSAN_OPTIONS="suppressions=${SAN_SUPP_DIR}/ubsan:print_stacktrace=1:halt_on_error=1:${UBSAN_OPTIONS}" \
+  ./src/test/test_bitcoin \
+    --logger=HRF:JUNIT,message,${TEST_BITCOIN_JUNIT} \
+    -- \
+    -testsuitename="${TEST_BITCOIN_SUITE_NAME}" \
+    "${@:2}"
+}
+
+# Facility to print out sanitizer log outputs to the build log console
+print_sanitizers_log() {
+  for log in "${SAN_LOG_DIR}"/*.log.*
+  do
+    if [ -f "${log}" ]; then
+      echo "*** Output of ${log} ***"
+      cat "${log}"
+    fi
+  done
+}
+trap "print_sanitizers_log" ERR
+
+
+build_with_cmake() {
+  CMAKE_FLAGS="${CMAKE_FLAGS[*]}" "${DEVTOOLS_DIR}"/build_cmake.sh "$@"
+}
+
+build_with_autotools() {
+  CONFIGURE_FLAGS="${CONFIGURE_FLAGS[*]}" "${DEVTOOLS_DIR}"/build_autotools.sh "$@"
+}
+
+run_ibd() {
+  "${TOPLEVEL}"/contrib/teamcity/ibd.sh "$@"
+}
+
+build_static_dependencies() {
+  "${DEVTOOLS_DIR}"/build_depends.sh
+}