https://perl5.git.perl.org / metaconfig.git / blame
| Commit | Line | Data |
|---|---|---|
| 959f3c4c JH |
1 | ?RCS: $Id: ptrsize.U,v 3.0.1.1 1994/10/29 16:28:19 ram Exp $ |
| 2 | ?RCS: | |
| 3 | ?RCS: Copyright (c) 1991-1993, 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 3.0. | |
| 10 | ?RCS: | |
| 11 | ?RCS: $Log: ptrsize.U,v $ | |
| 12 | ?RCS: Revision 3.0.1.1 1994/10/29 16:28:19 ram | |
| 13 | ?RCS: patch36: added ?F: line for metalint file checking | |
| 14 | ?RCS: | |
| 15 | ?RCS: Revision 3.0 1993/08/18 12:09:37 ram | |
| 16 | ?RCS: Baseline for dist 3.0 netwide release. | |
| 17 | ?RCS: | |
| 18 | ?MAKE:ptrsize: echo n c cat rm Myread Compile voidflags | |
| 19 | ?MAKE: -pick add $@ %< | |
| 20 | ?S:ptrsize: | |
| 21 | ?S: This variable contains the value of the PTRSIZE symbol, which | |
| 22 | ?S: indicates to the C program how many bytes there are in a pointer. | |
| 23 | ?S:. | |
| 24 | ?C:PTRSIZE: | |
| 25 | ?C: This symbol contains the size of a pointer, so that the C preprocessor | |
| 26 | ?C: can make decisions based on it. It will be sizeof(void *) if | |
| 27 | ?C: the compiler supports (void *); otherwise it will be | |
| 28 | ?C: sizeof(char *). | |
| 29 | ?C:. | |
| 30 | ?H:#define PTRSIZE $ptrsize /**/ | |
| 31 | ?H:. | |
| 32 | ?F:!try | |
| 33 | : check for length of pointer | |
| 34 | echo " " | |
| 35 | case "$ptrsize" in | |
| 36 | '') | |
| 37 | $echo $n "Checking to see how big your pointers are...$c" >&4 | |
| 38 | if test "$voidflags" -gt 7; then | |
| 39 | echo '#define VOID_PTR char *' > try.c | |
| 40 | else | |
| 41 | echo '#define VOID_PTR void *' > try.c | |
| 42 | fi | |
| 43 | $cat >>try.c <<'EOCP' | |
| 44 | #include <stdio.h> | |
| 45 | int main() | |
| 46 | { | |
| 37a56d0d | 47 | printf("%d\n", (int)sizeof(VOID_PTR)); |
| b8fb7a32 | 48 | exit(0); |
| 959f3c4c JH |
49 | } |
| 50 | EOCP | |
| 51 | set try | |
| 52 | if eval $compile_ok; then | |
| 53 | ptrsize=`./try` | |
| 54 | $echo " $ptrsize bytes." >&4 | |
| 55 | else | |
| 56 | dflt='4' | |
| 57 | echo "(I can't seem to compile the test program. Guessing...)" >&4 | |
| 58 | rp="What is the size of a pointer (in bytes)?" | |
| 59 | . ./myread | |
| 60 | ptrsize="$ans" | |
| 61 | fi | |
| 62 | ;; | |
| 63 | esac | |
| 64 | $rm -f try.c try | |
| 65 |