Andreas Lauser fbec8c2300 make the PETSc code compile even if PETSc is not available ... if PETSc is not available, the .cpp file will compile fine because it will be reduced to be empty, but trying to include LinearSolverPetsc.hpp in this case will result in an error.		2017-12-11 11:33:52 +01:00
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core	make the PETSc code compile even if PETSc is not available	2017-12-11 11:33:52 +01:00