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openmpi/config/ompi_check_func_lib.m4
Brian Barrett c96f870674 * Merge of wrapper compiler updates from the bwb-wrapper-fix branch (r8690 -
r8698), with changes below:

  - Split wrapper flags into those required for each of the three projects,
    and cleaned up some cruft (including the LIBMPI_EXTRA_*FLAGS) through-
    out the build system
  - Added opal_init_util and opal_finalize_util to allow init / cleanup
    of all the opal code that doesn't require the MCA system
  - Create standalone key=value file parser, based on the one that used
    to be in the mca param parser, so that it can be shared in multiple
    places
  - Add wrapper datafiles for opal, orte, and ompi wrappers, and add
    wrapper compiler with support for all the old features

This commit was SVN r8699.

The following SVN revisions from the original message are invalid or
inconsistent and therefore were not cross-referenced:
  r8690
  r8698
2006-01-16 01:48:03 +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 $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
# OMPI_CHECK_FUNC_LIB(func, lib)
# ------------------------------
# Try to find function func, first with the present LIBS, second with
# lib added to LIBS. If func is found with the libraries listed in
# LIBS, no modification to LIBS is made. If func is in lib (but not
# in LIBS) then lib is added to LIBS. If func is not in lib, then
# LIBS is not modified.
AC_DEFUN([OMPI_CHECK_FUNC_LIB],[
AS_VAR_PUSHDEF([ompi_var], [ompi_cv_func_lib_$1_$2])dnl
AC_CACHE_CHECK([if we need -l$2 for $1],
ompi_var,
[AC_LINK_IFELSE([AC_LANG_FUNC_LINK_TRY([$1])],
[AS_VAR_SET(ompi_var, "no")],
[LIBS_save="$LIBS"
LIBS="$LIBS -l$2"
AC_LINK_IFELSE([AC_LANG_FUNC_LINK_TRY([$1])],
[AS_VAR_SET(ompi_var, "yes")],
[AS_VAR_SET(ompi_var, "not found")])
LIBS="$LIBS_save"])])
AS_IF([test "AS_VAR_GET(ompi_var)" = "yes"],
[LIBS="$LIBS -l$2"])
# see if we actually have $1. Use AC_CHECK_FUNCS so that it
# does the glibc "not implemented" check. Will use the current LIBS,
# so will check in -l$2 if we decided we needed it above
AC_CHECK_FUNCS([$1])
AS_VAR_POPDEF([ompi_var])dnl
])