On 07/26/2010 07:40 AM, Eric Blake wrote: > cd '$(top_builddir)' && ... > > since "cd" will succeed but "cd ''" will fail, but that still doesn't > explain the root cause for $(top_builddir) not expanding correctly. Scratch that - bash 4.1, zsh, and dash all share the same bug: $ bash -c 'cd ""'; echo $? 0 ksh93 is even worse - it changes to the home directory anyways. Of all the shells I tested, _only_ Solaris /bin/sh errored out! $ cd /tmp $ /bin/sh -c 'cd ""; echo $?; pwd' /bin/sh: null directory $ echo $? 1 Looks like a gotcha to document in the autoconf manual. -- Eric Blake eblake@xxxxxxxxxx +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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