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thodg/libiconv/m4/proto.m4

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  • Author : Bruno Haible
    Date : 2002-04-29 13:10:06
    Hash : 70b9eb6d
    Message : Make autoconfiguration independent of clisp.

  • m4/proto.m4
  • dnl Copyright (C) 1993-2002 Free Software Foundation, Inc.
    dnl This file is free software, distributed under the terms of the GNU
    dnl General Public License.  As a special exception to the GNU General
    dnl Public License, this file may be distributed as part of a program
    dnl that contains a configuration script generated by Autoconf, under
    dnl the same distribution terms as the rest of that program.
    
    dnl From Bruno Haible, Marcus Daniels.
    
    AC_PREREQ(2.13)
    
    dnl CL_PROTO(IDENTIFIER, ACTION-IF-NOT-FOUND, FINAL-PROTOTYPE)
    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)
    ])
    
    dnl CL_PROTO_RET(INCLUDES, DECL, CACHE-ID, TYPE-IF-OK, TYPE-IF-FAILS)
    AC_DEFUN([CL_PROTO_RET],
    [AC_TRY_COMPILE([$1]
    AC_LANG_EXTERN[$2
    ], [], $3="$4", $3="$5")
    ])
    
    dnl CL_PROTO_TRY(INCLUDES, ANSI-DECL, TRAD-DECL, ACTION-IF-OK, ACTION-IF-FAILS)
    AC_DEFUN([CL_PROTO_TRY],
    [AC_TRY_COMPILE([$1]
    AC_LANG_EXTERN
    [#if defined(__STDC__) || defined(__cplusplus)
    $2
    #else
    $3
    #endif
    ], [], [$4], [$5])
    ])
    
    dnl CL_PROTO_CONST(INCLUDES, ANSI-DECL, TRAD-DECL, CACHE-ID)
    AC_DEFUN([CL_PROTO_CONST],
    [CL_PROTO_TRY([$1], [$2], [$3], $4="", $4="const")]
    )