diff -Naur tcpxtract-1.0.1.orj/debian/rules tcpxtract-1.0.1/debian/rules
--- tcpxtract-1.0.1.orj/debian/rules	2024-04-16 22:36:44.000000000 +0800
+++ tcpxtract-1.0.1/debian/rules	2026-05-28 15:41:10.540349670 +0800
@@ -3,6 +3,7 @@
 
 export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 export DEB_CFLAGS_MAINT_APPEND = -DDEFAULT_CONFIG_FILE=\"/etc/tcpxtract.conf\"
+export CFLAGS += -std=gnu17
 
 %:
 	dh $@ --with autoreconf