Zachary,
You also need to make sure that CMake actually sees that your new source
directory. In particular, you should add a line saying
ADD_SUBDIRECTORY(Test)
to source/CMakeLists.txt.
Best,
Daniel
Am Mo., 9. Nov. 2020 um 11:35 Uhr schrieb Zachary 42! <
zacharyloui...@gmail.com>:
> Hi folks,
>
> I am trying to add another include/source directory and subsequent obj to
> dealii for potential future contributions to dealii. Though I am having
> linking errors because my new obj needs to link agains the lac_obj (need
> Trilinos and other interfaces). I thought the ADD_DEPENDICIES in the
> source/CMakeLists.txt file is where this is taking care of but apparently
> not. I am following the exact same CMakeLists.txt files as in the other
> source/dirs but I am still getting the undefined symbols error due to
> object targets not apparently linking together.
>
> [ 80%] Linking CXX shared library ../lib/libdealii.dylib
> Undefined symbols for architecture x86_64:
> "dealii::PETScWrappers::SparseMatrix::SparseMatrix<int>(int const&,
> bool)", referenced from:
> test::Operator::Operator(int const&) in Operator.cc.o
> test::Operator::Operator(int const&, std::__1::basic_string<char,
> std::__1::char_traits<char>, std::__1::allocator<char> > const&) in
> Operator.cc.o
> ld: symbol(s) not found for architecture x86_64
>
> So looks like the obj_lac needs to link with the obj_test and it doesn’t
> appear to be…
>
> Here is my source/Test/CMakeLists.txt file which builds fine:
>
> INCLUDE_DIRECTORIES(BEFORE ${CMAKE_CURRENT_BINARY_DIR})
>
> SET(_src
> Operator.cc
> )
>
> SET(_n_includes_per_unity_file 20)
>
> IF(DEAL_II_UNITY_BUILD)
> LIST(SORT _unity_include_src)
> ENDIF()
>
> SETUP_SOURCE_LIST("${_unity_include_src}"
> "${_separate_src}"
> ${_n_includes_per_unity_file}
> _src
> )
>
> FILE(GLOB _header
> ${CMAKE_SOURCE_DIR}/include/test/*.h
> )
>
> DEAL_II_ADD_LIBRARY(obj_test OBJECT ${_src} ${_header})
>
> I didn’t change anything in the souce/CMakeLists.txt file.
>
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