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# -*- shell-script -*-
#
# Copyright (c) 2009-2020 Cisco Systems, Inc. All rights reserved
# Copyright (c) 2013 Los Alamos National Security, LLC. All rights reserved.
# Copyright (c) 2013-2020 Intel, Inc. All rights reserved.
# Copyright (c) 2017-2019 Research Organization for Information Science
# and Technology (RIST). All rights reserved.
# Copyright (c) 2020 IBM Corporation. All rights reserved.
# Copyright (c) 2021 Nanook Consulting. All rights reserved.
# Copyright (c) 2021-2022 Amazon.com, Inc. or its affiliates.
# All Rights reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#
# PMIX_LIBEV_CONFIG([action-if-found], [action-if-not-found])
# --------------------------------------------------------------------
# Attempt to find a libev package. If found, evaluate
# action-if-found. Otherwise, evaluate action-if-not-found.
#
# Modifies the following in the environment:
# * pmix_libev_CPPFLAGS
# * pmix_libev_LDFLAGS
# * pmix_libev_LIBS
#
# Adds the following to the wrapper compilers:
# * CPPFLAGS: none
# * LDLFGAS: add pmix_libev_LDFLAGS
# * LIBS: add pmix_libev_LIBS
AC_DEFUN([PMIX_LIBEV_CONFIG],[
PMIX_VAR_SCOPE_PUSH([pmix_event_dir pmix_event_libdir pmix_event_defaults pmix_check_libev_save_CPPFLAGS pmix_check_libev_save_LDFLAGS pmix_check_libev_save_LIBS])
AC_ARG_WITH([libev],
[AS_HELP_STRING([--with-libev=DIR],
[Search for libev headers and libraries in DIR ])])
AC_ARG_WITH([libev-libdir],
[AS_HELP_STRING([--with-libev-libdir=DIR],
[Search for libev libraries in DIR ])])
AC_ARG_WITH([libev-extra-libs],
[AS_HELP_STRING([--with-libev-extra-libs=LIBS],
[Add LIBS as dependencies of Libev])])
AC_ARG_ENABLE([libev-lib-checks],
[AS_HELP_STRING([--disable-libev-lib-checks],
[If --disable-libev-lib-checks is specified, configure will assume that -lev is available])])
pmix_libev_support=1
AS_IF([test "$with_libev" = "no"],
[AC_MSG_NOTICE([Libev support disabled by user.])
pmix_libev_support=0])
AS_IF([test "$with_libev_extra_libs" = "yes" -o "$with_libev_extra_libs" = "no"],
[AC_MSG_ERROR([--with-libev-extra-libs requires an argument other than yes or no])])
AS_IF([test $pmix_libev_support -eq 1],
[pmix_check_libev_save_CPPFLAGS="$CPPFLAGS"
pmix_check_libeve_save_LDFLAGS="$LDFLAGS"
pmix_check_libev_save_LIBS="$LIBS"
AS_IF([test "$enable_libev_lib_checks" != "no"],
[OAC_CHECK_PACKAGE([libev],
[pmix_libev],
[event.h],
[ev ${with_libev_extra_libs}],
[ev_async_send],
[],
[pmix_libev_support=0])],
[PMIX_FLAGS_APPEND_UNIQ([PMIX_DELAYED_LIBS], [$with_libev_extra_libs])])
CPPFLAGS="$pmix_check_libev_save_CPPFLAGS"
LDFLAGS="$pmix_check_libev_save_LDFLAGS"
LIBS="$pmix_check_libev_save_LIBS"])
AS_IF([test $pmix_libev_support -eq 1],
[PMIX_FLAGS_APPEND_UNIQ([CPPFLAGS], [$pmix_libev_CPPFLAGS])
PMIX_WRAPPER_FLAGS_ADD([CPPFLAGS], [$pmix_libev_CPPFLAGS])
PMIX_FLAGS_APPEND_UNIQ([LDFLAGS], [$pmix_libev_LDFLAGS])
PMIX_WRAPPER_FLAGS_ADD([LDFLAGS], [$pmix_libev_LDFLAGS])
PMIX_WRAPPER_FLAGS_ADD([STATIC_LDFLAGS], [$pmix_libev_STATIC_LDFLAGS])
PMIX_FLAGS_APPEND_UNIQ([PMIX_DELAYED_LIBS], [$pmix_libev_LIBS])
PMIX_WRAPPER_FLAGS_ADD([LIBS], [$pmix_libev_LIBS])
PMIX_WRAPPER_FLAGS_ADD([STATIC_LIBS], [$pmix_libev_STATIC_LIBS])
PMIX_WRAPPER_FLAGS_ADD([PC_MODULES], [$pmix_hwloc_PC_MODULES])])
AC_MSG_CHECKING([will libev support be built])
if test $pmix_libev_support -eq 1; then
AC_MSG_RESULT([yes])
$1
PMIX_SUMMARY_ADD([Required Packages], [Libev], [], [$pmix_libev_SUMMARY])
else
AC_MSG_RESULT([no])
# if they asked us to use it, then this is an error
AS_IF([test -n "$with_libev" && test "$with_libev" != "no"],
[AC_MSG_WARN([LIBEV SUPPORT REQUESTED AND NOT FOUND])
AC_MSG_ERROR([CANNOT CONTINUE])])
$2
fi
PMIX_VAR_SCOPE_POP
])
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