On my Desktop Debian "squeeze/sid" system with systemd from today's GIT, I do this: $ ./bootstrap.sh [... many lines omitted] + autoconf -Wall configure.ac:253: warning: cannot check for file existence when cross compiling ../../lib/autoconf/general.m4:2765: AC_CHECK_FILE is expanded from... configure.ac:253: the top level configure.ac:254: warning: cannot check for file existence when cross compiling configure.ac:254: the top level configure.ac:255: warning: cannot check for file existence when cross compiling configure.ac:255: the top level configure.ac:256: warning: cannot check for file existence when cross compiling configure.ac:256: the top level configure.ac:257: warning: cannot check for file existence when cross compiling configure.ac:257: the top level configure.ac:258: warning: cannot check for file existence when cross compiling configure.ac:258: the top level + run_versioned autoheader 2.63 Maybe you need it: $ autoconf --version autoconf (GNU Autoconf) 2.67 Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+/Autoconf: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by David J. MacKenzie and Akim Demaille.
Heh, that's a misunderstanding. The warning is just about the fact that some of our autoconf checks would break IF you'd cross-compile things, but only then. But since you don't do that it's not a problem. It might make sense to file a bug against autoconf upstream asking for a clarified warning in this case.
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