--- libdatovka-v0.2.1/configure.ac	2021-11-03 13:33:03.000000000 +0100
+++ libdatovka-v0.2.1-patched/configure.ac	2023-01-18 11:44:25.647566474 +0100
@@ -46,6 +46,8 @@
                 [Define if you want include debugging code])
       )
 
+CFLAGS="${CFLAGS} -Wno-error=deprecated-declarations"
+
 AC_CHECK_DECL([_WIN32])
 AM_CONDITIONAL([WIN32], [test "$ac_cv_have_decl__WIN32" = "yes"])