ax_check_awk_exit

Check if AWK supports exit(). 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_CHECK_AWK_EXIT],[
  AC_REQUIRE([AX_NEED_AWK])

  AC_MSG_CHECKING([if $AWK supports exit()])
  echo "" | $AWK '{ exit(99); }' 2>/dev/null
  AS_IF([test $? -eq 99],[
    AC_MSG_RESULT([yes])
    $1
  ],[
    AC_MSG_RESULT([no])
    $2
  ])
])

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