If the default value of `ofc_type_size` is `$ac_cv_sizeof_int`,
`OMPI_SIZEOF_FORTRAN_*` of all unavailable types become `sizeof(int)`.
This leads `OMPI_SIZEOF_FORTRAN_REAL2 == OMPI_SIZEOF_FORTRAN_REAL`
to become true unintentionally and `OMPI_DATATYPE_MPI_REAL2` has a
wrong value in `ompi/datatype/ompi_datatype_internal.h`. This is not
an actual bug because datatypes for unavailable types are not used.
However it is confusing. I looked the source tree and the history but
could find any basis of `$ac_cv_sizeof_int`.
If we don't use `implicit none` in `OMPI_FORTRAN_GET_KIND_VALUE`, and
if a Fortran compiler does not support `ISO_C_BINDING` completely,
a random value is set in `value` and the fallback route is not used.
It is not our intention.
Signed-off-by: KAWASHIMA Takahiro <t-kawashima@jp.fujitsu.com>
config/ directory. We split them apart a while ago in the hopes that
it would simplify things, but it didn't really (e.g., because there
were still some ompi/opal .m4 files in the top-level config/
directory, resulting in developer confusion where any given m4 macro
was defined).
So this commit consolidates them back into the top-level directory for
simplicity.
There's still (at least) two changes that would be nice to make:
1. Split any generated .m4 file (e.g., autogen-generated .m4 files)
into a separate directory somewhere so that a top-level -Iconfig/
will only get our explicitly defined macros, not the autogen stuff
(e.g., with libevent2019 needing to get the visibility macro, but
NOT all the autogen-generated inclusion of component configure.m4
files).
1. Change configure to be of the form:
{{{
# ...a small amount of preamble/setup...
OPAL_SETUP
m4_ifdef([project_orte], [ORTE_SETUP])
m4_ifdef([project_ompi], [OMPI_SETUP])
# ...a small amount of finishing stuff...
}}}
I doubt we'll ever get anything as clean as that, but that would be
the goal to shoot for.
This commit was SVN r27704.
