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Switch ThirdParty PETSc configuration to use pkg-config

Issue/feature addressed

On Fedora PETSc could not be found. This is because it uses a different directory layout than FindPETSc.cmake accommodates.

Proposed solution

The PETSc developers prefer us all to use pkg-config through CMake, so switch to this.


We now first find pkg-config, then use the PKG_SEARCH_MODULES macro to find PETSc.




  • Functions and classes, or changes to them, are documented.
  • User guide/documentation is updated.
  • Changelog is updated.
  • Suitable tests added for new functionality.
  • Contributed code is correctly formatted. (See the contributing guidelines).
  • License added to any new files.
  • No extraneous files have been added (e.g. compiler output or test data files).


On the 19.07 the code formatting (code style) was standardised using clang-format, over the whole Nektar++ code. This means changes in your branch will conflict with formatting changes on the master branch. To resolve these conflicts , see #295 (closed)

Edited by Chris Cantwell

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