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    1: dnl Copyright (C) 1993-2002 Free Software Foundation, Inc.
    2: dnl This file is free software, distributed under the terms of the GNU
    3: dnl General Public License.  As a special exception to the GNU General
    4: dnl Public License, this file may be distributed as part of a program
    5: dnl that contains a configuration script generated by Autoconf, under
    6: dnl the same distribution terms as the rest of that program.
    7: 
    8: dnl From Bruno Haible, Marcus Daniels.
    9: 
   10: AC_PREREQ(2.13)
   11: 
   12: dnl CL_PROTO(IDENTIFIER, ACTION-IF-NOT-FOUND, FINAL-PROTOTYPE)
   13: AC_DEFUN([CL_PROTO],
   14: [AC_MSG_CHECKING([for $1 declaration])
   15: AC_CACHE_VAL(cl_cv_proto_[$1], [$2
   16: cl_cv_proto_$1="$3"])
   17: cl_cv_proto_$1=`echo "[$]cl_cv_proto_$1" | tr -s ' ' | sed -e 's/( /(/'`
   18: AC_MSG_RESULT([$]{ac_t:-
   19:          }[$]cl_cv_proto_$1)
   20: ])
   21: 
   22: dnl CL_PROTO_RET(INCLUDES, DECL, CACHE-ID, TYPE-IF-OK, TYPE-IF-FAILS)
   23: AC_DEFUN([CL_PROTO_RET],
   24: [AC_TRY_COMPILE([$1]
   25: AC_LANG_EXTERN[$2
   26: ], [], $3="$4", $3="$5")
   27: ])
   28: 
   29: dnl CL_PROTO_TRY(INCLUDES, ANSI-DECL, TRAD-DECL, ACTION-IF-OK, ACTION-IF-FAILS)
   30: AC_DEFUN([CL_PROTO_TRY],
   31: [AC_TRY_COMPILE([$1]
   32: AC_LANG_EXTERN
   33: [#if defined(__STDC__) || defined(__cplusplus)
   34: $2
   35: #else
   36: $3
   37: #endif
   38: ], [], [$4], [$5])
   39: ])
   40: 
   41: dnl CL_PROTO_CONST(INCLUDES, ANSI-DECL, TRAD-DECL, CACHE-ID)
   42: AC_DEFUN([CL_PROTO_CONST],
   43: [CL_PROTO_TRY([$1], [$2], [$3], $4="", $4="const")]
   44: )