On Dec 2, 2010, at 10:55 AM, Verbesselt, Jan wrote:

> Hi all,
> 
> I am trying to install the libLAS C++ library on my mac here so that I can 
> use it with GRASS (from http://www.kyngchaos.com/software/grass) as shown on 
> the following wiki (http://grass.osgeo.org/wiki/LIDAR) and in the future via 
> Python or R statistics.

It would be nice if someone contributed some code to GRASS to enable 
reading/writing LAS files directly with libLAS instead of using the 
las2txt/txt2las mechanisms.  It'd be much faster.  I would happily help any 
volunteer who takes on the task.

> Initially, I was getting an error when running the 'cmake -G "Unix Makefiles" 
> ../ ' command. This was solved by commenting out ln the CMakeLists.txt :
> #file(READ "doc/index.txt" README )  (thanks Howard)

I will fix this for the next release.  Thanks for the report.

> Then I ran the following to link it with gdal and geotif library (installed 
> before installing grass from http://www.kyngchaos.com/software/grass):
> "
> cmake -D CMAKE_INSTALL_PREFIX=/usr/local \
> -D GDAL_CONFIG=/Library/Frameworks/GDAL.framework/Programs/gdal-config \
> -D GEOTIFF_INCLUDE_DIR=/Library/Frameworks/UnixImageIO.framework/unix/include 
> \
> -D 
> GEOTIFF_LIBRARY=/Library/Frameworks/UnixImageIO.framework/unix/lib/libgeotiff.dylib
>  \
> ..
> "
> which went ok:

Awesome.  I hadn't tested with William's frameworks yet.  I will add this to 
the docs as another alternative.

> Do I have to do something about these warning messages?

These warnings are expected.

> What are the consequences?

Some of these might be issues to worry about.  Others are not so consequential. 
 We do strive to compile as warning-free as possible, and we compile by default 
with most of the warning knobs turned on.  

Howard_______________________________________________
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