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openmpi/opal/mca/event/configure.m4
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

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dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2010-2011 Cisco Systems, Inc. All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
# There will only be one component used in this framework, and it will
# be selected at configure time by priority. Components must set
# their priorities in their configure.m4 files. They must also set
# the shell variable $opal_event_<component>_include to a header file
# name (relative to opal/mca/event) that will be included in
# opal/mca/event/event.h.
# Optionally, components may also set the shell variable
# $opal_event_<component>_include_cppflags if additional CPPFLAGS must
# be used with this header file. The event framework will add the
# winning component's $opal_event_<component>_include_cppflags to the
# global $CPPFLAGS.
dnl We only want one winning component.
m4_define(MCA_opal_event_CONFIGURE_MODE, STOP_AT_FIRST_PRIORITY)
AC_DEFUN([MCA_opal_event_CONFIG],[
# configure all the components
MCA_CONFIGURE_FRAMEWORK($1, $2, 1)
# We must have found exactly 1 static component, or we can't
# continue. STOP_AT_FIRST_PRIORITY will guarantee that we find at
# most one. We need to check here that we found *at least* one.
AS_IF([test "$MCA_opal_event_STATIC_COMPONENTS" = ""],
[AC_MSG_WARN([Did not find a suitable static opal event component])
AC_MSG_ERROR([Cannot continue])])
# If there's any spaces in the middle of the string, then we found
# more than 1 eligible static component. That's no good (and
# should never happen, but let's be sure)!
opal_event_winner=`echo $MCA_opal_event_STATIC_COMPONENTS | sed -e 's/^[ ]+//' | sed -e 's/[ ]+$//'`
AS_IF([test "`echo $opal_event_winner | sed 's/ //'`" != "$opal_event_winner"],
[AC_MSG_WARN([Found more than 1 eligible static opal event component])
AC_MSG_WARN([This should never happen!])
AC_MSG_ERROR([Cannot continue])])
# We need to find out what the underlying component set
# HAVE_WORKING_EVENTOPS was set to. This is for systems that
# don't have working poll(), etc. (e.g., Cray) -- we still need an
# event component (for timers, etc.), but we don't have working
# event ops. Ensure that it was set by the component.
echo " "
AC_MSG_CHECKING([if have working event ops for the event framework])
AS_IF([test "$OPAL_HAVE_WORKING_EVENTOPS" = ""],
[AC_MSG_RESULT([unknown])
AC_MSG_WARN([Event component did not set OPAL_HAVE_WORKING_EVENTOPS])
AC_MSG_ERROR([Cannot continue])],
[AS_IF([test "$OPAL_HAVE_WORKING_EVENTOPS" = "1"],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])])
AC_DEFINE_UNQUOTED(OPAL_HAVE_WORKING_EVENTOPS,
[$OPAL_HAVE_WORKING_EVENTOPS],
[Whether our event component has working event operations or not (if not, then assumedly it only has working timers and signals)])
# The winning component will have told us where their header file
# is located
AC_MSG_CHECKING([for winning event component header file])
eval "opal_event_base_include=\`echo \$opal_event_${opal_event_winner}_include\`"
AS_IF([test "$opal_event_base_include" = ""],
[AC_MSG_RESULT([missing])
AC_MSG_WARN([Missing implementation header])
AC_MSG_ERROR([Cannot continue])])
AC_MSG_RESULT([$opal_event_base_include])
AC_DEFINE_UNQUOTED([MCA_event_IMPLEMENTATION_HEADER],
["opal/mca/event/$opal_event_base_include"],
[Header to include for event implementation])
AC_MSG_CHECKING([for winning component additional CPPFLAGS])
eval "opal_event_base_include_cppflags=\`echo \$opal_event_${opal_event_winner}_include_cppflags\`"
AS_IF([test "$opal_event_base_include_cppflags" != ""],
[AC_MSG_RESULT([$opal_event_base_include_cppflags])
CPPFLAGS="$CPPFLAGS $opal_event_base_include_cppflags"],
[AC_MSG_RESULT([none])])
])