Dear Bruno,

thank you, I installed Trilinos 12.18.1 and now it worked. Since the 
TRILINOS_VERSION is detected by cmake I would have rather expected a cmake 
error (wrong version, as for example for p4est, where also a specific 
version is needed and cmake throws an error if the version is too old). 
Anyway, not it works, thank you once more for the support.
Best regards

Stefan



Am Montag, 27. April 2020 13:50:57 UTC+2 schrieb Bruno Turcksin:
>
> Stefan,
>
> On Saturday, April 25, 2020 at 4:17:20 PM UTC-4, Stefan Knauf wrote:
>
>> Unfortuneately now "make install" stops with an error: 
>> [ 42%] Building CXX object 
>> source/lac/CMakeFiles/obj_lac_release.dir/trilinos_precondition_muelu.cc.o
>> /home/stefan/deal/dealii-9.1.1/source/lac/trilinos_precondition_muelu.cc:24:14:
>>  
>> fatal error: MueLu_CreateEpetraPreconditioner.hpp: No such file or directory
>>  #    include <MueLu_CreateEpetraPreconditioner.hpp>
>>               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> compilation terminated.
>> source/lac/CMakeFiles/obj_lac_release.dir/build.make:1286: recipe for 
>> target 
>> 'source/lac/CMakeFiles/obj_lac_release.dir/trilinos_precondition_muelu.cc.o' 
>> failed
>> make[2]: *** 
>> [source/lac/CMakeFiles/obj_lac_release.dir/trilinos_precondition_muelu.cc.o] 
>> Error 1
>> CMakeFiles/Makefile2:1409: recipe for target 
>> 'source/lac/CMakeFiles/obj_lac_release.dir/all' failed
>> make[1]: *** [source/lac/CMakeFiles/obj_lac_release.dir/all] Error 2
>> Makefile:129: recipe for target 'all' failed
>> make: *** [all] Error 2
>> I have attached detailed.log etc. 
>> So I guess I am one step further but still the installation with trilinos 
>> support was not successful. Any further idea?
>>
>
> This is due to a non-backward compatible change in Trilinos. Unless you 
> have a good reason don't use their master. It should work fine with 12.18. 
> If you really need Trilinos-master, you need to use the master branch of 
> deal.II and disable the wrappers for MueLU.
>
> Best,
>
> Bruno
>

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