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AC_PREREQ(2.13)
AC_DEFUN([CL_PROTO],
[AC_MSG_CHECKING([for $1 declaration])
AC_CACHE_VAL(cl_cv_proto_[$1], [$2
cl_cv_proto_$1="$3"])
cl_cv_proto_$1=`echo "[$]cl_cv_proto_$1" | tr -s ' ' | sed -e 's/( /(/'`
AC_MSG_RESULT([$]{ac_t:-
}[$]cl_cv_proto_$1)
])
AC_DEFUN([CL_PROTO_RET],
[AC_TRY_COMPILE([$1]
AC_LANG_EXTERN[$2
], [], $3="$4", $3="$5")
])
AC_DEFUN([CL_PROTO_TRY],
[AC_TRY_COMPILE([$1]
AC_LANG_EXTERN
[#if defined(__STDC__) || defined(__cplusplus)
$2
#else
$3
#endif
], [], [$4], [$5])
])
AC_DEFUN([CL_PROTO_CONST],
[CL_PROTO_TRY([$1], [$2], [$3], $4="", $4="const")]
)
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