Notes on cross-compiling the daemon (was: Re: [Libguestfs] Windows port of daemon?)

Notes on issues cross-compiling the daemon. I installed the Fedora Windows cross compiler and mingw32-portablexdr[1] and then did: cd daemon mingw32-configure make * No custom format specifiers. No replacement in Gnulib's printf either. Bugger. * No chroot. That means that cases where we use CHROOT_IN/CHROOT_OUT have to be rewritten. There's this almost laughable Windows library function which we might use: http://msdn.microsoft.com/en-us/library/bb773569%28VS.85%29.aspx This one needs more thought. * guestfsd.c socket code needs some attention. * guestfsd.c: command* functions need a Win32 replacement. * proto.c: Protocol code uses a select loop which could be replaced with a Win32 equivalent or (probably easier) we just use the Gnulib replacement select function. * stubs.c: LVM tokenizing code is a bit broken for reasons I didn't look into very deeply. We need to check for LVM availability in the appliance and disable all LVM-related code conditionally. These functions are missing, but Gnulib provides replacements: + mkdtemp + fstatat (gnulib module: openat) + getline + glob + sleep + strchrnul These functions are missing, and Gnulib provides no replacement (but it really should do): - fstatvfs - futimens - posix_fallocate - pread - readlinkat - realpath - sync I'll post a few patches shortly to fix some obviously broken things. (A good thing about compiling for another platform is I've already found some genuine mistakes in the code). Rich. [1] mingw32-portablexdr from here: http://git.annexia.org/?p=fedora-mingw.git;a=summary -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top