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Jeff Squyres de4bbacd13 It turns out that we can't always include the hwloc OpenFabrics verbs
helper file, even if we find that the system has <infiniband/verbs.h>.
The reason is because there are some inline functions in that verbs
helper file that invoke ibv_* functions.  Some linkers (e.g., Solaris
Studio Compilers) will instantiate those static inline functions --
even if we don't use them -- and therefore we need to be able to
resolve the ibv_* symbols at link time.

But since -libverbs is only specified in places where we use other
ibv_* functions (e.g., the OpenFabrics-based BTLs), that means that
linking random executables can/will fail (e.g., orterun).

So instead, introduce a new #define: OPAL_HWLOC_WANT_VERBS_HELPER.  If
this macro is set to 1 before including opal/mca/hwloc/hwloc.h, then
you'll also get the hwloc OpenFabrics verbs helper header file (*if*
hwloc found <infiniband/verbs.h> -- otherwise, it'll #error).

This commit was SVN r26417.
2012-05-09 20:18:31 +00:00
..
2012-03-05 14:08:47 +00:00
2009-08-20 11:42:18 +00:00