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# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_try_awk_expout.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_TRY_AWK_EXPOUT(NAME,TEST-INPUT,TEST-BODY,EXPECTED-OUTPUT,[ACTION-IF-SUCCESS],[ACTION-IF-FAILURE])
#
# DESCRIPTION
#
# Run a test using the awk program found on AWK variable. The test being
# run has TEST-BODY as body and is feeded with TEST-INPUT. Check if the
# test gives the expected output. If successful execute ACTION-IF-SUCCESS
# otherwise ACTION-IF-FAILURE.
#
# This work is heavily based upon testawk.sh script by Heiner Steven. You
# should find his script (and related works) at
# <http://www.shelldorado.com/articles/awkcompat.html>. Thanks to
# Alessandro Massignan for his suggestions and extensive nawk tests on
# FreeBSD.
#
# LICENSE
#
# Copyright (c) 2009 Francesco Salvestrini <salvestrini@users.sourceforge.net>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 8
AC_DEFUN([AX_TRY_AWK_EXPOUT], [
AC_REQUIRE([AX_NEED_AWK])
AC_MSG_CHECKING([if $AWK supports $1])
cat <<EOF > conftest.out
$2
EOF
ax_try_awk_output=`$AWK '{ [$3] ; }' conftest.out 2> /dev/null`
ax_try_awk_result=$?
rm -f conftest.out
AS_IF([test $ax_try_awk_result -eq 0],[
AS_IF([test "X$ax_try_awk_output" = "X[$4]"],[
AC_MSG_RESULT([yes])
$5
],[
AC_MSG_RESULT([no])
$6
])
],[
AC_MSG_RESULT([no])
$6
])
])
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