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document the module update mechanism

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Radovan Bast
2015-06-04 12:03:05 +02:00
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doc/updating-modules.rst
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@ -8,11 +8,23 @@ To update CMake modules you need to run the ``boostrap.py`` script::
cd cmake cd cmake
python bootstrap.py .. python bootstrap.py ..
The CMake modules are not fetched or updated at configure time The CMake modules are not fetched or updated at configure time or build time.
or build time. In other words, if you never re-run ``boostrap.py`` script and never modify the
CMake module files, then the CMake modules will remain forever frozen.
How to pin CMake modules to a certain version How to pin CMake modules to a certain version
--------------------------------------------- ---------------------------------------------
Write me ... Sometimes you may want to avoid using the latest version of a CMake module and
rather fetch an older version with the hash ``abcd123``. To achieve this, instead
of::
[coverage]
source: https://github.com/scisoft/autocmake/raw/master/modules/UseCodeCoverage.cmake
pin the version to ``abcd123`` (you do not need to specify the full Git hash, a unique
beginning will do)::
[coverage]
source: https://github.com/scisoft/autocmake/raw/abcd123/modules/UseCodeCoverage.cmake