External Project Integration

Table of Contents

• Makefile integration
• CMake integration
  • Sub-directory
  • FetchContent

Makefile integration

Once NEML2 is installed, external C++ projects can use NEML2 by including the development headers and linking against the NEML2 libraries. NEML2 offers a collection of libraries, they are

• neml2_base
• neml2_dispatcher
• neml2_driver
• neml2_jit
• neml2_misc
• neml2_model
• neml2_solver
• neml2_tensor
• neml2_user_tensor

The names of the libraries are self-explanatory. As a general rule of thumb, the library names collide with the header hierarchy. That is, if your code includes #include "neml2/tensors/SR2.h", then your program should be linked against the corresponding tensor library using -lneml2_tensor, etc.

CMake integration

Sub-directory

Integrating NEML2 into a project that already uses CMake is fairly straightforward. The following CMakeLists.txt snippet links NEML2 into the target executable called foo:

add_subdirectory(neml2)
 
add_executable(foo main.cxx)
target_link_libraries(foo neml2)

The above snippet assumes NEML2 is checked out to the directory neml2, i.e., as a git submodule.

FetchContent

Alternatively, you may use CMake's FetchContent module to integrate NEML2 into your project:

FetchContent_Declare(
  neml2
  GIT_REPOSITORY https://github.com/applied-material-modeling/neml2.git
  GIT_TAG v2.0.0
)
FetchContent_MakeAvailable(neml2)
 
add_executable(foo main.cxx)
target_link_libraries(foo neml2)