[geos-devel] [#317] Build configuration for CMake build system

[Paul Ramsey]

Mats,

I'm quite interested in CMake, thanks for taking the time to put one
in for GEOS. The main thing stopping me from pursuing CMake has been
lack of time to start from scratch and learn, and now you've provided
me a template to work from. I think we should drop autotools once we
can get a good build on all our platforms with CMake.

P.

On Mon, Jan 18, 2010 at 1:31 PM, Mateusz Loskot <mateusz at loskot.net> wrote:
> Folks,
>
> I have added GEOS build configuration for CMake (http://www.cmake.org/)
> build system. Here are details:
>
> http://trac.osgeo.org/geos/ticket/317
>
> I decided to do it as I believe it will help to minimise efforts to
> maintain build configurations for systems and compilers GEOS supports.
>
> CMake is a cross-platform meta-build system. It generates a build
> configuration which is native to user's environment and toolset
> and does it from single source of settings, namely a bunch of
> CMakeLists.txt files.
>
> I have successfully tested using the CMake configuration to build
> GEOS using makefiles and GCC on Linux as well as Visual Studio
> projects on Windows. List of available generators (native build systems):
>
> http://cmake.org/cmake/help/cmake-2-8-docs.html#section_Generators
>
> Currently, the configuration is more or less based on default settings
> of native builders. It needs to be updated with compiler-specific tweaks
> and some other improvements. Also, CTest and CPack features have not
> been incorporated. It's matter of time.
>
> Current status is basically equivalent to Autotools command set of:
>
> ./configure [OPTIONS] && make && make install and make clean of course.
>
> On Windows it works with some extra addition, it can install GEOS
> (select and build INSTALL.vcproj project in the VS IDE). By default, it
> is installed under prefix C:\Program Files\geos in to bin, lib and
> include subdirectories.
>
> My aim is to finish CMake configuration and replace Visual Studio
> hand-written makefiles and manually maintained projects for GEOS 3.3.0.
> I understand that Autotools-based configuration will stay, perhaps until
> the Community will CMake or forever, but this belongs to future.
>
>
> I would appreciate if anybody could take a look at it, test it,
> comments, critique and patches.
>
>
>
> BTW, CMake-based build of GEOS completes in ~ 60 seconds
> versus ~ 4 minutes Autotools-based build.
>
>
> BTW2, for an in-depth and easy overview of the CMake, I'd  this video
> with lecture given at Google:
>
> http://www.youtube.com/watch?v=8Ut9o4OdSC0
>
> p.s. I posted CC of this message to
> postgis-devel at postgis.refractions.net list as well.
>
> Best regards,
> --
> Mateusz Loskot, http://mateusz.loskot.net
> Charter Member of OSGeo, http://osgeo.org
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