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###############
Linking ADIOS 2
###############
**********
From CMake
**********
ADIOS exports a CMake package configuration file that allows its targets to be directly imported into another CMake project via the ``find_package`` command:
.. code-block:: cmake
cmake_minimum_required(VERSION 3.12)
project(MySimulation C CXX)
find_package(MPI REQUIRED)
find_package(ADIOS2 REQUIRED)
#...
add_library(my_library src1.cxx src2.cxx)
target_link_libraries(my_library PRIVATE adios2::cxx11_mpi MPI::MPI_C)
When configuring your project you can then set the ``ADIOS2_ROOT`` or ``ADIOS2_DIR`` environment variables to the install prefix of ADIOS2.
****************************
From non-CMake build systems
****************************
If you're not using CMake then you can manually get the necessary compile and link flags for your project using ``adios2-config``:
.. code-block:: bash
$ /path/to/install-prefix/bin/adios2-config --cxxflags
ADIOS2_DIR: /path/to/install-prefix
-isystem /path/to/install-prefix/include -isystem /opt/ohpc/pub/mpi/openmpi3-gnu7/3.1.0/include -pthread -std=gnu++11
$ /path/to/install-prefix/bin/adios2-config --cxxlibs
ADIOS2_DIR: /path/to/install-prefix
-Wl,-rpath,/path/to/install-prefix/lib:/opt/ohpc/pub/mpi/openmpi3-gnu7/3.1.0/lib /path/to/install-prefix/lib/libadios2.so.2.4.0 -pthread -Wl,-rpath -Wl,/opt/ohpc/pub/mpi/openmpi3-gnu7/3.1.0/lib -Wl,--enable-new-dtags -pthread /opt/ohpc/pub/mpi/openmpi3-gnu7/3.1.0/lib/libmpi.so -Wl,-rpath-link,/path/to/install-prefix/lib
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