[Dune] [#1000] Migrate build system from autotools to CMake

[Dune]

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FS#1000 - Migrate build system from autotools to CMake
User who did this - Markus Blatt (mblatt)

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This question goes to all people familiar with CMake:

What should we use as the CMake name for modules. Currently, e.g. for dune-common the cmake files expect the name to be DuneCommon. This means that we can find dune-common by calling "find_package(DuneCommon)". Calling cmake -D DuneCommon_Dir=<build_tree|installation_tree> this works fine.

Unfortunately, with this convention we have to set -D <MODULE_NAME>_DIR for every module. If we would change the module to include the dash, e.g. to dune-common, Dune-Common or DUNE-COMMONN , calling cmake with "-D CMAKE_PREFIX_PATH=<dir-with-all-the-build-dir>" would find the builddirs of the modules in "<dir-with-all-the-build-dir>/<module-name-ignoring-case>*" automatically. This would make it easier to use the cmake version of DUNE. On the other hand the variables in the cmake package configuration files will look kind of weired: e.g. DUNE-COMMON_LIBRARIES.

What should the naming convention be in your opinion?
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More information can be found at the following URL:
http://www.dune-project.org/flyspray/index.php?do=details&task_id=1000#comment3490

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