CHECK_Fortran_SOURCE_COMPILES([[
module foo
  interface bar
    module subroutine bar_integer(x)
      integer, intent(in) :: x
    end subroutine
    module subroutine bar_real(x)
      real, intent(in) :: x
    end subroutine
  end interface
end module
submodule ( foo ) sub
contains
  module subroutine bar_integer(x)
    integer, intent(in) :: x
  end subroutine
  module subroutine bar_real(x)
    real, intent(in) :: x
  end subroutine
end submodule
program main
end program
]] ${var} SRC_EXT F90)

check_fortran_source_compiles("
  program testargs
    integer :: n
    character(len=256) :: v
    n = command_argument_count()
    call get_command_argument(0, v)
  end program testargs"
  ADIOS2_HAVE_FORTRAN_F03_ARGS
  SRC_EXT F90
)

check_fortran_source_compiles("
  program testargs
    integer :: n
    character(len=256) :: v
    n = iargc()
    call getarg(0, v)
  end program testargs"
  ADIOS2_HAVE_FORTRAN_GNU_ARGS
  SRC_EXT F90
)

CHECK_Fortran_SOURCE_COMPILES("${prog_src}" "${prog_name}" SRC_EXT
                              "${prog_ext}")

CHECK_Fortran_SOURCE_COMPILES("${prog_src}" "${prog_name}" SRC_EXT
                              "${prog_ext}")

check_fortran_source_compiles (${SIZEOF_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_SIZEOF SRC_EXT f90)

check_fortran_source_compiles (${C_SIZEOF_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_C_SIZEOF SRC_EXT f90)

check_fortran_source_compiles (${STORAGE_SIZE_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_STORAGE_SIZE SRC_EXT f90)

check_fortran_source_compiles (${ISO_FORTRAN_ENV_CODE} ${HDF_PREFIX}_HAVE_ISO_FORTRAN_ENV SRC_EXT f90)

check_fortran_source_compiles (${REALISNOTDOUBLE_CODE} ${HDF_PREFIX}_FORTRAN_DEFAULT_REAL_NOT_DOUBLE SRC_EXT f90)

check_fortran_source_compiles (${ISO_C_BINDING_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_ISO_C_BINDING SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_HAVE_C_LONG_DOUBLE SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_C_LONG_DOUBLE_IS_UNIQUE SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_C_BOOL_IS_UNIQUE SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} HAVE_ISO_FORTRAN_ENV SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_CHAR_ALLOC SRC_EXT f90)

check_fortran_source_compiles (${PROG_SRC} MPI_LOGICAL_KIND SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_SIZEOF SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_C_SIZEOF SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_STORAGE_SIZE SRC_EXT f90)

check_fortran_source_compiles (${ISO_C_BINDING_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_ISO_C_BINDING SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_HAVE_C_LONG_DOUBLE SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_C_LONG_DOUBLE_IS_UNIQUE SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_C_BOOL_IS_UNIQUE SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} HAVE_ISO_FORTRAN_ENV SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_CHAR_ALLOC SRC_EXT f90)

check_fortran_source_compiles (${PROG_SRC} MPI_LOGICAL_KIND SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_SIZEOF SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_C_SIZEOF SRC_EXT f90)

check_fortran_source_compiles (${SOURCE_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_STORAGE_SIZE SRC_EXT f90)

check_fortran_source_compiles (${ISO_C_BINDING_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_ISO_C_BINDING SRC_EXT f90)