New question #245682 on Yade:
https://answers.launchpad.net/yade/+question/245682
Hi,
A LBM engine (to compute interstitial fluid flow with the lattice Boltzmann
method) was implemented in Yade some years ago, but have not been submitted to
git so far. Now I want to submit this engine, and I want to make its
compilation optionnal, with this option disable by default.
Consequently I added in CMakeLists.txt the following lines:
OPTION(ENABLE_LBMFLOW "Enable LBM engine (very experimental)" OFF)
and
IF(ENABLE_LBMFLOW)
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DLBM_ENGINE")
SET(CONFIGURED_FEATS "${CONFIGURED_FEATS} LBMFLOW")
MESSAGE("LBMFLOW is still experimental, building and running LBM engine are
at your own risk!")
ELSE(ENABLE_LBMFLOW)
SET(DISABLED_FEATS "${DISABLED_FEATS} LBMFLOW")
ENDIF(ENABLE_LBMFLOW)
In addition all .ccp and .hpp files related to the LBM engine begin with:
#ifdef LBM_ENGINE
and finish with
#endif
When I choose the option:
cmake -DENABLE_LBMFLOW=ON
the message:
"LBMFLOW is still experimental, building and running LBM engine are at your own
risk!"
is printed in the console, thus ENABLE_LBMFLOW is turned to ON as requested,
but that's all and the compilation of the LBM engine is not performed. It is as
if the results of the condition:
#ifdef LBM_ENGINE
is still false. Indeed, if I remove the condition #ifdef LBM_ENGINE, then the
LBM engine is compiled.
I think I missed a point somewhere in the definition of the variable
LBM_ENGINE, but which one? Have you got an idea?
Best,
Luc
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