!
!  Tests PetscHasExternalPackage().
!
#include <petsc/finclude/petscsys.h>
program main
  use petscsys
  implicit none

  character(len=256) pkg, outputString
  PetscBool has, flg
  PetscErrorCode ierr

  PetscCallA(PetscInitialize(ierr))
  pkg = 'hdf5'
  PetscCallA(PetscOptionsGetString(PETSC_NULL_OPTIONS, PETSC_NULL_CHARACTER, '-pkg', pkg, flg, ierr))
  PetscCallA(PetscHasExternalPackage(pkg, has, ierr))
  write (outputString, *) 'PETSc has '//trim(pkg)//'?', has, '\n'
  PetscCallA(PetscPrintf(PETSC_COMM_WORLD, outputString, ierr))
  PetscCallA(PetscFinalize(ierr))
end program main

!/*TEST
!
!   test:
!      suffix: blaslapack
!      args: -pkg blaslapack
!   test:
!      suffix: hdf5
!      requires: hdf5
!      args: -pkg hdf5
!   test:
!      suffix: no-hdf5
!      requires: !hdf5
!      args: -pkg hdf5
!   test:
!      suffix: parmetis
!      requires: parmetis
!      args: -pkg parmetis
!   test:
!      suffix: no-parmetis
!      requires: !parmetis
!      args: -pkg parmetis
!   test:
!      suffix: yaml
!      requires: yaml
!      args: -pkg yaml
!   test:
!      suffix: no-yaml
!      requires: !yaml
!      args: -pkg yaml
!
!TEST*/