Folder naming bug.

[illusionoflife]

Hello. I just encountered following bug: 
I have folloing configure.ac:
    AC_PREREQ([2.69])
    AC_INIT([FULL-PACKAGE-NAME], [VERSION], [BUG-REPORT-ADDRESS])
   AC_PROG_CXX
   AC_OUTPUT

Now I run `autoreconf -fi` and then ./configure.
All okay. And now focus: `mkdir core`
Now ./configure returns following:

checking for g++... g++
checking whether the C++ compiler works... yes
checking for C++ compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... rm: cannot remove 
'core': Is a directory
yes
checking whether g++ accepts -g... rm: cannot remove 'core': Is a directory
yes
configure: creating ./config.status
rm: cannot remove 'core': Is a directory

If I rename `core' to `foo', for example, all okay. I bet, there is some name 
collision, but I am just user of autotools, not developer.

I attach config.log, configure, configure.ac, config.status and what more I 
have to? 

Have a nice day!
--
Best regards, illusionoflife
Contact me on address@hidden
Please, read rfc1855, if did not already.

configure.ac
Description: Text document

configure
Description: application/shellscript

config.status
Description: application/shellscript

config.log
Description: Text Data

confdefs.h
Description: Text Data

signature.asc
Description: This is a digitally signed message part.