usage of xfsctrl for embedded development / uuid question

[<paul.chavent@xxxxxxxx>]

Hi

I would like to use the xfsctl for trying directio and realtime feature on my 
gnu-linux embeded system (i have a "homemade" sdk).

It seems that the xfsctl function is defined inline, and that all i need is in 
inlude/xfs/xfs.h
inlude/xfs/xfs_fs.h
inlude/xfs/platform_deps.h
inlude/xfs/linux.h

So, for installing the dev files, it should be enought to do 
tar -xvf xfsprogs-3.1.0.tar.gz
cd xfsprogs-3.1.0.tar.gz
./configure --build=${HOST} --host=${TARGET}
$MAKE -C include install-dev PKG_INC_DIR=${TOOLCHAIN_SYSROOT}/usr/include/xfs

So here are my remarks :

(1) uuid configuration problems :

    The package_uuiddev.m4 search for the function uuid_compare. This unction 
is present in the uuid included in e2fsprogs, but not in the OSSP uuid 
(http://www.ossp.org/pkg/lib/uuid/). So the configuration is ok but the 
compilation fails.

    The package_uuiddev.m4 search for uuid headers in multiple path but only 
one is included (in linux.h for example).

    I think there is a bug with th definition of libuuid in package_uuiddev.m4 
(not sure) 

(2) uuid requirement

    As uuid seems to be not required for my application, i suggest a patch that 
allow to ignore the absence of this dependance.

(3) regeneration of configure

    The regeneration of configure fails whith this message

    # rm configure
    # make configure
    [...]
    autoconf
    configure.in:101: error: possibly undefined macro: AC_HAVE_BLKID_TOPO
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.


Please tell me if my remarks are wrong or if i go in a bad direction. 

Thank you.

Paul

xfsprogs-3.1.0-uuid.patch
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