https://perl5.git.perl.org / metaconfig.git / blame
| Commit | Line | Data |
|---|---|---|
| 4fb8202b JH |
1 | ?RCS: $Id: d_volatile.U,v 3.0.1.2 1995/07/25 14:08:49 ram Exp $ |
| 2 | ?RCS: | |
| 3 | ?RCS: Copyright (c) 1991-1993, Raphael Manfredi | |
| 65a32477 MBT |
4 | ?RCS: |
| 5 | ?RCS: You may redistribute only under the terms of the Artistic License, | |
| 4fb8202b JH |
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 | |
| 65a32477 | 8 | ?RCS: that same Artistic License; a copy of which may be found at the root |
| 4fb8202b JH |
9 | ?RCS: of the source tree for dist 3.0. |
| 10 | ?RCS: | |
| 11 | ?RCS: $Log: d_volatile.U,v $ | |
| 12 | ?RCS: Revision 3.0.1.2 1995/07/25 14:08:49 ram | |
| 13 | ?RCS: patch56: made cc and ccflags optional dependencies | |
| 14 | ?RCS: | |
| 15 | ?RCS: Revision 3.0.1.1 1993/09/09 11:49:51 ram | |
| 16 | ?RCS: patch9: volatile definition was swapped over with undef | |
| 17 | ?RCS: | |
| 18 | ?RCS: Revision 3.0 1993/08/18 12:07:57 ram | |
| 19 | ?RCS: Baseline for dist 3.0 netwide release. | |
| 20 | ?RCS: | |
| 2cb64bf6 | 21 | ?MAKE:d_volatile: cat +cc +ccflags rm_try Setvar |
| 4fb8202b JH |
22 | ?MAKE: -pick add $@ %< |
| 23 | ?S:d_volatile: | |
| 24 | ?S: This variable conditionally defines the HASVOLATILE symbol, which | |
| 25 | ?S: indicates to the C program that this C compiler knows about the | |
| 26 | ?S: volatile declaration. | |
| 27 | ?S:. | |
| 28 | ?C:HASVOLATILE ~ %<: | |
| 29 | ?C: This symbol, if defined, indicates that this C compiler knows about | |
| 30 | ?C: the volatile declaration. | |
| 31 | ?C:. | |
| 32 | ?H:?%<:#$d_volatile HASVOLATILE /**/ | |
| 33 | ?H:?%<:#ifndef HASVOLATILE | |
| 34 | ?H:?%<:#define volatile | |
| 35 | ?H:?%<:#endif | |
| 36 | ?H:. | |
| 37 | ?W:%<:volatile | |
| 38 | ?LINT:set d_volatile | |
| 39 | ?LINT:known volatile | |
| 40 | : check for volatile keyword | |
| 41 | echo " " | |
| 42 | echo 'Checking to see if your C compiler knows about "volatile"...' >&4 | |
| 43 | $cat >try.c <<'EOCP' | |
| 44 | int main() | |
| 45 | { | |
| 46 | ?X: | |
| 47 | ?X: The following seven lines added by Bill Campbell <billc@sierra.com> | |
| 48 | ?X: detect that MIPS compilers do not handle volatile in all situations. | |
| 49 | ?X: | |
| 50 | typedef struct _goo_struct goo_struct; | |
| 51 | goo_struct * volatile goo = ((goo_struct *)0); | |
| 52 | struct _goo_struct { | |
| 53 | long long_int; | |
| 54 | int reg_int; | |
| 55 | char char_var; | |
| 56 | }; | |
| 57 | typedef unsigned short foo_t; | |
| 58 | char *volatile foo; | |
| 59 | volatile int bar; | |
| 60 | volatile foo_t blech; | |
| 61 | foo = foo; | |
| 62 | } | |
| 63 | EOCP | |
| 64 | if $cc -c $ccflags try.c >/dev/null 2>&1 ; then | |
| 65 | val="$define" | |
| 66 | echo "Yup, it does." | |
| 67 | else | |
| 68 | val="$undef" | |
| 69 | echo "Nope, it doesn't." | |
| 70 | fi | |
| 71 | set d_volatile | |
| 72 | eval $setvar | |
| 2cb64bf6 | 73 | $rm_try |
| 4fb8202b | 74 |