build failure in "[build GAL] arrows"

Hi,

I have two successive failures building master, each at the step
"[build GAL] arrows".  The first was an incremental build of commit
843735f pulled today (Sunday) around 00:45 UCT, which failed with ...

    [build GAL] arrows
    warn:legacy.tools:6673:1:vcl/source/app/svapp.cxx:302: AppFileName should be set to something 
after SVMain!
    Work on gallery 'file:///home/terry/lo_hacking/git/libo2/workdir/unxlngi6/Gallery/arrows'
    Existing themes: 0
    Existing themes: 1
    Using DestDir: file:///home/terry/lo_hacking/git/libo2/extras/source/gallery
    warn:legacy.osl:6673:1:ucb/source/core/provprox.cxx:384: 
UcbContentProviderProxy::getContentProvider - No provider for 'com.sun.star.help.XMLHelp.
    warn:legacy.osl:6673:1:ucb/source/core/provprox.cxx:384: 
UcbContentProviderProxy::getContentProvider - No provider for 'com.sun.star.help.XMLHelp.
    warn:legacy.osl:6673:1:ucb/source/core/provprox.cxx:384: 
UcbContentProviderProxy::getContentProvider - No provider for 'com.sun.star.help.XMLHelp.
    warn:sfx2.bastyp:6673:1:sfx2/source/bastyp/helper.cxx:119: GetResultSet: Any other exception: 
Unable to create Content! 
    /home/terry/lo_hacking/git/libo2/solver/unxlngi6/bin/gengal.bin: symbol lookup error: 
/home/terry/lo_hacking/git/libo2/solver/unxlngi6/lib/libvclplug_svplo.so: undefined symbol: 
_ZN6RegionC1Ev
    make[1]: *** [/home/terry/lo_hacking/git/libo2/workdir/unxlngi6/Gallery/arrows.done] Error 1
    make: *** [build] Error 2

The second, after `make clean`, was commit 76a9012, pulled today around 21:30 UTC, which failed 
with ...

    [build GAL] arrows
    no suitable windowing system found, exiting.
    make[1]: *** [/home/terry/lo_hacking/git/libo2/workdir/unxlngi6/Gallery/arrows.done] Error 1
    make: *** [build] Error 2

My system is ubuntu-natty (11.04) 32-bit ...

    $ uname -a
    Linux cougar-natty 2.6.38-16-generic #67-Ubuntu SMP Thu Sep 6 18:00:43 UTC 2012 i686 athlon 
i386 GNU/Linux

    $ gcc --version
    gcc (Ubuntu/Linaro 4.5.2-8ubuntu4) 4.5.2
    Copyright (C) 2010 Free Software Foundation, Inc.
    This is free software; see the source for copying conditions.  There is NO
    warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    
    $ java -version
    java version "1.6.0_24"
    OpenJDK Runtime Environment (IcedTea6 1.11.5) (6b24-1.11.5-0ubuntu1~11.04.1)
    OpenJDK Client VM (build 20.0-b12, mixed mode, sharing)

and my configuration parameters are ..

    --enable-option-checking=fatal
    --enable-dbgutil
    --enable-crashdump
    --without-system-postgresql
    --without-myspell-dicts
    --without-help
    --with-extra-buildid
    --without-doxygen

Among recent commits, 9555b5b "Add gengal to RepositoryFixes and
autoinstall it." catches my eye because it shares the string "gengal"
with the first error message.

Advice welcome.

Thanks,
Terry.