some additional explanation - it could be a situation when AF_IB is
defined in user space but kernel doesn't support it.
On 03-Mar-14 08:53, Vasily Filipov wrote:
Hi Jeff,
I've committed the fixes (r30905). It is a problem to detect
kernel defines (such as AF_IB ), so we have to use AC_RUN_IFELSE macro.
Thanks,
Vasily.
On 27-Feb-14 17:09, Jeff Squyres (jsquyres) wrote:
I'm seeing this warning this morning:
-----
configure.ac:1139: warning: AC_RUN_IFELSE called without default to
allow cross c\
ompiling
../../lib/autoconf/general.m4:2748: AC_RUN_IFELSE is expanded from...
../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
ompi/mca/btl/openib/configure.m4:37: MCA_ompi_btl_openib_CONFIG is
expanded from.\
..
config/ompi_mca.m4:571: MCA_CONFIGURE_M4_CONFIG_COMPONENT is expanded
from...
config/ompi_mca.m4:352: MCA_CONFIGURE_FRAMEWORK is expanded from...
config/ompi_mca.m4:252: MCA_CONFIGURE_PROJECT is expanded from...
config/ompi_mca.m4:39: OMPI_MCA is expanded from...
configure.ac:1139: the top level
-----
Is it necessary to AC_RUN_IFELSE here? Is AC_CHECK_DECLS not
sufficient for some reason?
It strikes me that this test you currently have in configure.m4
really should be a run-time test, and that all you need in
configure.m4 should be an AC_CHECK_DECLS to see if AF_IB exists.
