Problem with default config.cache

[Borsenkow Andrej]

(This intentinally crossposted because I cannot decide if it is autoconf or
libtool problem; lftp is just a package where I hit this bug).

/tools/src/lftp-pre2.4.0-3/configure -C --prefix=/tools --disable-nls
LIBS='-lsocket -lnsl' CPPFLAGS=-DRESOLVER
.....
updating cache config.cache
loading cache config.cache within ltconfig
/tools/src/lftp-pre2.4.0-3/ltconfig: config.cache: not found
configure: error: libtool configure failed

The reason is here (ltconfig):

if test -n "$cache_file" && test -r "$cache_file" && test -f "$cache_file";
then
  echo "loading cache $cache_file within ltconfig"
  . $cache_file
fi

The problem is `.' command does search in PATH and of course does not find
cache file. I am not sure if configure shuold set it to ./config.cache or
ltconfig prepend ./ if file name is not absolute.

address@hidden ./ltconfig --version
ltconfig (GNU libtool) 1.4a (1.641.2.259 2001/06/04 19:32:47)

configure generated by autoconf-2.52 (why configure --version does not
output version?)

lftp-pre2.4.0-3

-andrej