automake debug output

[Lars J. Aas]

When I run automake in certain projects, I get the below attached output.
It's been like this for a while (figured it was a known issue that would
soon get fixed), but now I suspect that I'm the only one who gets them
(they only come when I run automake in the projects where I have multi-
level entries in $(SUBDIRS), and I might be the only one using that).  Does
anyone know what the below messages are all about?  Line 6347 is like this:

        my $source_suffix;
        my $object_suffix;

===>    if (($source_suffix, $object_suffix)
            = ($1 =~ $SUFFIX_RULE_PATTERN))
        {

  Lars J

Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 98.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 102.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 106.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 110.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 114.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 118.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 122.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 126.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 130.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 134.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 138.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 143.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 148.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 153.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 158.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 162.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 166.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 170.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 174.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 178.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 194.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 198.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 202.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 206.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 210.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 214.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 218.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 222.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 226.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 230.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 234.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 238.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 242.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 246.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 250.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 254.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 258.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 262.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 266.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 270.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 274.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 278.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN3> line 282.
Makefile.am:10: directory should not contain `/'
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN22> line 116.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN22> line 131.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN59> line 42.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN59> line 47.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN59> line 52.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN59> line 57.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN59> line 62.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN59> line 67.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN59> line 83.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN59> line 88.
Use of uninitialized value in pattern match (m//) at /usr/local/bin/automake 
line 6347, <GEN59> line 93.