ax_try_awk_expout

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.

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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