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Jeff Squyres 82c93611e6 Fix some problems with the libevent and hwloc frameworks:
* change components from setting <framework>_base_include to
   opal_<framework>_<component>_include; the framework m4 will figure
   out the winning component and pick the right "include" shell
   variable.  Ditto for the other shell variables (cppflags, ldflags,
   etc.). 
 * misc fixes to hwloc/external
 * add a bunch of missing "opal_" prefixes to shell variables
 * add a few more / update a few comments in framework m4's

This commit was SVN r25174.
2011-09-21 23:06:13 +00:00
..

12 Sep 2011

Notes for hwloc component maintainers:

1. There can only be *1* hwloc version component at a time.
   Specifically: if there are multiple hwlocXYZ components (i.e.,
   different versions of hwloc), then they must all be .ompi_ignore'd
   except for 1.  This is because we currently m4_include all of the
   underlying hwloc's .m4 files -- if there are multiple hwlocXYZ
   components, I don't know if m4 will barf at the multiple,
   conflicting AC_DEFUNs, or whether it'll just do something
   completely undefined.

1a. As a consequence, if you're adding a new hwloc version component,
   you'll need to .ompi_ignore all others while you're testing the new
   one. 

2. If someone wants to fix #1 someday, we might be able to do what we
   do for libevent: OMPI_CONFIG_SUBDIR (instead of slurping in hwloc's
   .m4 files).