https://perl5.git.perl.org / metaconfig.git / blame
| Commit | Line | Data |
|---|---|---|
| d8875586 MBT |
1 | ?RCS: $Id: vaproto.U 1 2006-08-24 12:32:52Z rmanfredi $ |
| 2 | ?RCS: | |
| 3 | ?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi | |
| 4 | ?RCS: | |
| 5 | ?RCS: You may redistribute only under the terms of the Artistic Licence, | |
| 6 | ?RCS: as specified in the README file that comes with the distribution. | |
| 7 | ?RCS: You may reuse parts of this distribution only within the terms of | |
| 8 | ?RCS: that same Artistic Licence; a copy of which may be found at the root | |
| 9 | ?RCS: of the source tree for dist 4.0. | |
| 10 | ?RCS: | |
| 11 | ?RCS: Orginal Author: Graham Stoney <greyham@research.canon.oz.au> | |
| 12 | ?RCS: | |
| 13 | ?RCS: $Log: vaproto.U,v $ | |
| 14 | ?RCS: Revision 3.0.1.1 1994/01/24 14:17:16 ram | |
| 15 | ?RCS: patch16: definition of _V now appears only when needed | |
| 16 | ?RCS: | |
| 17 | ?RCS: Revision 3.0 1993/08/18 12:09:59 ram | |
| 18 | ?RCS: Baseline for dist 3.0 netwide release. | |
| 19 | ?RCS: | |
| 20 | ?MAKE:vaproto: prototype i_stdarg Setvar | |
| 21 | ?MAKE: -pick add $@ %< | |
| 22 | ?S:vaproto: | |
| 23 | ?S: This variable conditionally defines CAN_VAPROTO on systems supporting | |
| 24 | ?S: prototype declaration of functions with a variable number of | |
| 25 | ?S: arguments. See also prototype. | |
| 26 | ?S:. | |
| 27 | ?C:CAN_VAPROTO ~ %<: | |
| 28 | ?C: This variable is defined on systems supporting prototype declaration | |
| 29 | ?C: of functions with a variable number of arguments. | |
| 30 | ?C:. | |
| 31 | ?C:_V: | |
| 32 | ?C: This macro is used to declare function parameters in prototypes for | |
| 33 | ?C: functions with a variable number of parameters. Use double parentheses. | |
| 34 | ?C: For example: | |
| 35 | ?C: | |
| 36 | ?C: int printf _V((char *fmt, ...)); | |
| 37 | ?C: | |
| 38 | ?C: Remember to use the plain simple _() macro when declaring a function | |
| 39 | ?C: with no variable number of arguments, since it might be possible to | |
| 40 | ?C: have a non-effect _V() macro and still get prototypes via _(). | |
| 41 | ?C:. | |
| 42 | ?H:?%<:#$vaproto CAN_VAPROTO /**/ | |
| 43 | ?H:?_V:#ifdef CAN_VAPROTO | |
| 44 | ?H:?_V:#define _V(args) args | |
| 45 | ?H:?_V:#else | |
| 46 | ?H:?_V:#define _V(args) () | |
| 47 | ?H:?_V:#endif | |
| 48 | ?H:. | |
| 49 | ?W:%<:_V | |
| 50 | ?LINT:set vaproto | |
| 51 | : see if prototypes support variable argument declarations | |
| 52 | echo " " | |
| 53 | case "$prototype$i_stdarg" in | |
| 54 | $define$define) | |
| 55 | echo "It appears we'll be able to prototype varargs functions." >&4 | |
| 56 | val="$define" | |
| 57 | ;; | |
| 58 | *) | |
| 59 | echo "Too bad... We won't be using prototyped varargs functions..." >&4 | |
| 60 | val="$undef" | |
| 61 | ;; | |
| 62 | esac | |
| 63 | set vaproto | |
| 64 | eval $setvar | |
| 65 |