--- old/common/autoconf/configure	2021-04-27 11:52:32.279292790 +0200
+++ new/common/autoconf/configure	2021-04-27 11:52:32.211291069 +0200
@@ -250,13 +250,10 @@
   set -x
 fi
 
-if test "x$conf_debug_configure" = xtrue; then
-  # Turn on logging, but don't turn on twice when called recursive
-  conf_debug_logfile=./debug-configure.log
-  (exec 3>&1 ; (. $conf_script_to_run "${conf_processed_arguments[@]}" 2>&1 1>&3 ) | tee -a $conf_debug_logfile 1>&2 ; exec 3>&-) | tee -a $conf_debug_logfile
-else
-  ( . $conf_script_to_run "${conf_processed_arguments[@]}" )
-fi
+# Now transfer control to the script generated by autoconf. This is where the
+# main work is done.
+conf_logfile=./configure.log
+(exec 3>&1 ; (. $conf_script_to_run "${conf_processed_arguments[@]}" 2>&1 1>&3 ) | tee -a $conf_logfile 1>&2 ; exec 3>&-) | tee -a $conf_logfile
 
 conf_result_code=$?
 ###