The following errors are from the Apache error_log where configure has been modified to not die on warnings and be more talkative using CGI::Carp
The repetitive nature of the error is not the result of running configure many time
This log sequence is produced from running configure in one submit in the browser
The exact situation is
- configure has not been run before. There is no LocalSite.cfg
- configure is run and shows the usual warnings and has suggested paths that are all OK
- we now hit next
- this is where we capture the log below
- with unmodified configure it dies with only "Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23" as error and only once. With configure modified to not die but instead report warnings we get the log below.

Why do we cycle through the same state so many times?
I tried to put a print STDERR just before new CGI and it shows that new CGI is called 3 times. First one time where all the below garbage happens. And then twice with no warnings.


configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure
configure: Use of uninitialized value $filename in substitution (s///) at (eval 40) line 23., referer: http://localhost/twiki/bin/configure
configure:  at (eval 40) line 23, referer: http://localhost/twiki/bin/configure
configure: \tCGI::read_multipart('CGI=HASH(0x950071c)', '---------------------------1214104872687565599164499825', 2915) called at /usr/lib/perl5/5.10.0/CGI.pm line 553, referer: http://localhost/twiki/bin/configure
configure: \tCGI::init('CGI=HASH(0x950071c)') called at /usr/lib/perl5/5.10.0/CGI.pm line 370, referer: http://localhost/twiki/bin/configure
configure: \tCGI::new('CGI') called at /var/www/twiki42/bin/configure line 330, referer: http://localhost/twiki/bin/configure