https://perl5.git.perl.org / metaconfig.git / blame
| Commit | Line | Data |
|---|---|---|
| c6667804 | 1 | ?RCS: $Id$ |
| d8875586 MBT |
2 | ?RCS: |
| 3 | ?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi | |
| cf39bd7e | 4 | ?RCS: |
| c6667804 | 5 | ?RCS: You may redistribute only under the terms of the Artistic License, |
| d8875586 MBT |
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 | |
| c6667804 | 8 | ?RCS: that same Artistic License; a copy of which may be found at the root |
| d8875586 MBT |
9 | ?RCS: of the source tree for dist 4.0. |
| 10 | ?RCS: | |
| 11 | ?RCS: $Log: d_voidsig.U,v $ | |
| 12 | ?RCS: Revision 3.0.1.3 1995/05/12 12:12:46 ram | |
| 13 | ?RCS: patch54: made cppflags dependency optional | |
| 14 | ?RCS: | |
| 15 | ?RCS: Revision 3.0.1.2 1994/08/29 16:20:35 ram | |
| 16 | ?RCS: patch32: now sets signal_t only once d_voidsig is known (WED) | |
| 17 | ?RCS: | |
| 18 | ?RCS: Revision 3.0.1.1 1994/06/20 06:59:54 ram | |
| 19 | ?RCS: patch30: now properly sets signal_t when re-using previous value | |
| 20 | ?RCS: | |
| 21 | ?RCS: Revision 3.0 1993/08/18 12:07:56 ram | |
| 22 | ?RCS: Baseline for dist 3.0 netwide release. | |
| 23 | ?RCS: | |
| 24 | ?MAKE:d_voidsig signal_t: rm contains cppstdin cppminus +cppflags test Myread \ | |
| 25 | Oldconfig Setvar Findhdr | |
| 26 | ?MAKE: -pick add $@ %< | |
| 27 | ?S:d_voidsig: | |
| 28 | ?S: This variable conditionally defines VOIDSIG if this system | |
| 29 | ?S: declares "void (*signal(...))()" in signal.h. The old way was to | |
| 30 | ?S: declare it as "int (*signal(...))()". | |
| 31 | ?S:. | |
| 32 | ?S:signal_t: | |
| 33 | ?S: This variable holds the type of the signal handler (void or int). | |
| 34 | ?S:. | |
| 35 | ?C:VOIDSIG: | |
| 36 | ?C: This symbol is defined if this system declares "void (*signal(...))()" in | |
| 37 | ?C: signal.h. The old way was to declare it as "int (*signal(...))()". It | |
| 38 | ?C: is up to the package author to declare things correctly based on the | |
| 39 | ?C: symbol. | |
| 40 | ?C:. | |
| 41 | ?C:Signal_t (SIGNAL_T): | |
| 42 | ?C: This symbol's value is either "void" or "int", corresponding to the | |
| 43 | ?C: appropriate return type of a signal handler. Thus, you can declare | |
| 44 | ?C: a signal handler using "Signal_t (*handler)()", and define the | |
| 45 | ?C: handler using "Signal_t handler(sig)". | |
| 46 | ?C:. | |
| 47 | ?H:#$d_voidsig VOIDSIG /**/ | |
| 48 | ?H:#define Signal_t $signal_t /* Signal handler's return type */ | |
| 49 | ?H:. | |
| 50 | ?T:xxx | |
| 51 | ?LINT:set d_voidsig | |
| 52 | : see if signal is declared as pointer to function returning int or void | |
| 53 | echo " " | |
| 54 | xxx=`./findhdr signal.h` | |
| 55 | $test "$xxx" && $cppstdin $cppminus $cppflags < $xxx >$$.tmp 2>/dev/null | |
| 56 | if $contains 'int.*\*[ ]*signal' $$.tmp >/dev/null 2>&1 ; then | |
| 57 | echo "You have int (*signal())() instead of void." >&4 | |
| 58 | val="$undef" | |
| 59 | elif $contains 'void.*\*[ ]*signal' $$.tmp >/dev/null 2>&1 ; then | |
| 60 | echo "You have void (*signal())() instead of int." >&4 | |
| 61 | val="$define" | |
| 62 | elif $contains 'extern[ ]*[(\*]*signal' $$.tmp >/dev/null 2>&1 ; then | |
| 63 | echo "You have int (*signal())() instead of void." >&4 | |
| 64 | val="$undef" | |
| 65 | else | |
| 66 | case "$d_voidsig" in | |
| 67 | '') | |
| 68 | echo "I can't determine whether signal handler returns void or int..." >&4 | |
| 69 | dflt=void | |
| 70 | rp="What type does your signal handler return?" | |
| 71 | . ./myread | |
| 72 | case "$ans" in | |
| 73 | v*) val="$define";; | |
| 74 | *) val="$undef";; | |
| 75 | esac;; | |
| 76 | "$define") | |
| 77 | echo "As you already told me, signal handler returns void." >&4;; | |
| 78 | *) | |
| 79 | echo "As you already told me, signal handler returns int." >&4;; | |
| 80 | esac | |
| 81 | fi | |
| 82 | set d_voidsig | |
| 83 | eval $setvar | |
| 84 | case "$d_voidsig" in | |
| 85 | "$define") signal_t="void";; | |
| 86 | *) signal_t="int";; | |
| 87 | esac | |
| 88 | $rm -f $$.tmp | |
| 89 |