Update spatialite-gui to 1.7.1 and libspatialite to 4.1.1

[dakcarto]

• spatialite-gui 1.7.x requires libspatialite to be built with libxml2 support

( https://groups.google.com/d/msg/spatialite-users/h8bdWISBhIQ/57m9wHfKCVoJ )

[jacknagel]

Is the system libxml2 not sufficient?

[dakcarto]

Hi,

Probably, but not entirely sure. I still have some SnoLeo Macs here at work and will test that out (as a baseline) today. I'll look at configure script and verify versioning as well.

[jacknagel]

Thanks.

[dakcarto]

@jacknagel this is my first foray into recipe editing, so please review. (I have rebased mxcl/master recent commits in and force pushed my changes to my branch)

About the OS X system libxml2:

• On 10.7.5, libspatialite compiled; then spatialite-gui configured, but failed to compile with errors about undefined symbols. Using homebrew's libxml2 fixed the compilation.
• On 10.6.8, system libxml2 is compiled against Python 2.6, and throws an error. Using homebrew's libxml2 allowed successful compilation of both libspatialite and spatialite-gui.
• In both cases, spatialite-tools compilation was unaffected.

About XCode 4.6+ edits: on my 10.7.5 Mac using XCode 4.6.3 with default compilers, both libspatialite and spatialite-gui failed to pick up the pkg-config setups for libgiagraphics, freexl, libspatialite and libxml2. Added some env variables to fix configure of both. Unneeded with tested XCode 4.5.x and 3.2.x.

The XCode 4.6+ edits may need verified, since I only tested them on one Mac with that setup. Can test it on another Mac when I get home tonight.

[dakcarto]

btw: Jenkins CI bot is failing because http://www.gaia-gis.it/gaia-sins/ (spatialite server) seems to be unreachable at the moment

[jacknagel]

This is done automatically if you add depends_on 'pkg-config' => :build to the formula

[dakcarto]

@jacknagel Turns out that libxml2 does not need Python support at all for spatialite-gui (by way of libspatialite libxml2-linked symbols). Dropped the with-python option and updated the pkg-config as you noted (worked great). Much cleaner, simpler now.

I think this should be squashed down to one commit after testing on 10.6.8 again.

[dakcarto]

OK, does clean installs of libxml2, libspatialite, spatialite-tools and spatialite-gui fine on 10.7.5 and 10.6.8 (now using libxml2 --without-python).

Not tested on 10.8.x, but waiting on build bot.

[jacknagel]

Great, thanks for your diligence here.