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openmpi/config/ompi_cxx_have_exceptions.m4
Jeff Squyres b29b852281 Consolidate all the opal/orte/ompi .m4 files back to the top-level
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.
2012-12-19 00:00:36 +00:00

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dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
dnl University Research and Technology
dnl Corporation. All rights reserved.
dnl Copyright (c) 2004-2005 The University of Tennessee and The University
dnl of Tennessee Research Foundation. All rights
dnl reserved.
dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
dnl University of Stuttgart. All rights reserved.
dnl Copyright (c) 2004-2005 The Regents of the University of California.
dnl All rights reserved.
dnl Copyright (c) 2008 Cisco Systems, Inc. All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
AC_DEFUN([OMPI_CXX_HAVE_EXCEPTIONS],[
#
# Arguments: None
#
# Depdencies: None
#
# Check to see if the C++ compiler can handle exceptions
#
# Sets OMPI_CXX_EXCEPTIONS to 1 if compiler has exceptions, 0 if not
#
AC_MSG_CHECKING([for throw/catch])
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int i=1; throw(i);]])],
OMPI_CXX_EXCEPTIONS=1, OMPI_CXX_EXCPTIONS=0)
if test "$OMPI_CXX_EXCEPTIONS" = "1"; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
# Clean up
AC_LANG_RESTORE])dnl