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make behavior of CMAKE_TUNE_FLAGS more consistent and allow to turn it off

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Axel Kohlmeyer
2020-03-17 19:16:02 -04:00
parent c1268bd1ec
commit 4a5125f450
3 changed files with 41 additions and 25 deletions
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doc/src/Build_basics.rst
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@ -218,7 +218,8 @@ flags to tune for optimal performance on given hosts. By default these are
initialized to some compiler specific flags, where known, to optimize the
LAMMPS executable with optimizations and instructions available on the host
where LAMMPS is compiled. For example, for Intel compilers this would be
``-xHost`` and for GNU compilers this would be ``-march=native``.
``-xHost`` and for GNU compilers this would be ``-march=native``. To turn
these flags off, set ``-D CMAKE_TUNE_FLAGS=``.
.. note::